Vincent SV-228 Integrated Hybrid Stereo Amplifier Instruction Manual

Vincent SV-228 Integrated Hybrid Stereo Amplifier

Product Information

Product Name: SV-228

The SV-228 is an appliance that offers various features for audio playback. It comes with a remote control for convenient operation. The product is designed and manufactured by Vincent-Team.

Safety Guidelines

It is important to follow the safety guidelines provided in the user manual to ensure safe usage of the product. These guidelines include instructions for battery usage and other precautions.

Other Instructions

The user manual provides additional instructions and information on various aspects of the product, such as installation, operating the appliance, troubleshooting, and technical specifications. It also includes a glossary of terms for better understanding.

Included in Delivery

The product package includes the SV-228 appliance, a remote control, and necessary cables for installation.

Description of the Appliance

The SV-228 appliance has multiple features, including a bass adjustment control for adjusting the bass levels of the sound. It also has input selection buttons and volume control buttons on the remote control.

Technical Specifications

The user manual provides detailed technical specifications of the SV-228 appliance, such as power requirements, impedance compatibility, and other relevant information.

Glossary

The glossary section in the user manual explains key terms and terminology used in relation to the SV-228 appliance, helping users understand the product better.

Product Usage Instructions

Remote Control

The SV-228 appliance comes with a remote control for convenient operation. The remote control requires batteries for functioning.

Batteries

Some batteries used in the remote control are rechargeable, while others are not. It is important to follow the cautionary instructions mentioned on each battery. To replace the batteries:

1. Locate the battery compartment on the remote control by sliding the clip and pulling out the battery compartment.
2. If the battery is depleted, remove it and insert a new button cell battery as per the schematic representation inside the battery compartment.

Operating the Appliance

Refer to the user manual for detailed instructions on operating the SV-228 appliance. It provides step-by-step guidance on using different features and functions of the appliance.

Installation

For proper installation of the SV-228 appliance, it is recommended to follow these guidelines:

• Only use speakers with a nominal impedance of at least 4 Ohms.
• Ensure correct wiring connections to avoid any potential issues.

SAFETY GUIDELINES

This appliance was produced under strict quality controls.
It complies with all established international safety standards. Nonetheless, the following instructions should be fully read and observed in order to prevent any hazard:
Do not open the appliance! Risk of electric shock!
There are no parts in the appliance that require maintenance by the user.

• Maintenance/Alterations
  All equipment that is connected to the domestic mains voltage can be dangerous to the user if not handled properly. Leave maintenance work to qualified professionals. The product is only permitted for connection to AC 230 Volt/50 Hz, for earthed sockets and use in enclosed areas. Altering the product or manipulating its serial number voids the warranty. After a fault, leave the appliance’s fuse to be replaced only by a professional with one of the same kind.
  Power Cable Connection
  Always pull the plug and never the power cable if you want to disconnect the appliance from the mains power. Make sure when setting up the appliance that the power cable is not squashed, severely bent or damaged by sharp edges. Do not touch the power lead with wet or damp hands. Use the power cable supplied or another one from Vincent.

• Switching Off
  Switch the appliance off every time before you connect or remove other components or loudspeakers, disconnect or connect it to the mains power, leave it unused for a longer period or want to clean its outside. On all amplifiers and receivers, wait approx. 1 minute after this before disconnecting or reconnecting the cable.

• Moisture/Heat/Vibration
  Contact of electrically operated equipment with liquids, moisture, rain or water vapour is dangerous for such equipment and the user and must be avoided without fail. Take care that no liquids or objects get inside the appliance (ventilation slots etc.). It must be disconnected from the mains power immediately and examined by a professional if this happens. Never expose the appliance to high temperatures (direct sunshine) or strong vibration.

• Heat Build-up
  All amplifiers generate heat as part of their design. Make sure that a gap of 5 cm remains around the appliance and that the surrounding air can circulate (do not install in enclosed cupboard). Vents must not be covered up.

• Volume
  The maximum tolerable volume is always reached well below the maximum possible setting on the amplifier. Be careful with the volume setting, therefore, in order to prevent damage to hearing. So that you do not expose yourself to high volumes unintentionally, always set to a low level before changing the input channel.

• Cleaning
  Pull out the power plug before cleaning the outside of the product. Whenever possible, use a soft, lintfree cloth that has been dampened. Do not use abrasives, solvents, thinners, flammable chemicals, polishes and other cleaning products that leave marks.

• Batteries
  Take note of the instructions for using batteries in the chapter “Remote Control”.

OTHER INSTRUCTIONS

Setting up the appliance
How the system is set up has an effect on the sound quality. Therefore only place it on a suitable, stable surface. To make the most of your system’s sound quality, we recommend placing the equipment on Vincent racks and not putting them on top of each other.

Old electronic equipment
This appliance is subject to the conditions set out in the European Directive 2012/19/EC. This is identified by the symbol of a crossed out waste bin on the appliance.
What this means for you as a consumer:
All old electrical and electronic equipment that is no longer used must be disposed of separately from domestic waste using places provided by the authorities. By doing so you can prevent damage to the environment and help to encourage manufacturers to produce more durable or reusable products. For further information about disposing your old appliance, please consult your local authority, waste disposal agency or the shop where you bought the product.
CE sign
This appliance complies with the current EU directives about attaining the CE mark and thus meets the requirements for electrical and electronic equipment (EMC regulations, safety regulations and regulations for low voltage equipment).

Declarations
This document is a product of Sintron Distribution GmbH, 76473 Iffezheim and may not be copied or distributed partly or in full without express, written consent.

Vincent is a registered trademark of Sintron Distribution GmbH, 76473 Iffezheim.
Vincent works continually to improve and develop its products. Therefore, the appearance and technical design of the appliance are subject to changes, as long as they are in the interest of progress. The content of these instructions is for information purposes only. It can be changed at any time without prior notice and does not constitute any obligation on the part of the trademark’s owner. The latter assumes no responsibility or liability for errors or inaccuracies, which may be included in these operating instructions.

Storage of the packaging
We strongly recommend that you keep the original packaging in case you need to transport the equipment again at a later date. Transport damages are mainly caused by improper packaging of the HiFidevices. Because the original packaging fits the equipment accurately it will reduce the risk of damage if transport is necessary.

Explanation of the symbols

INCLUDED IN DELIVERY
Please check the contents of the packaging, which in addition to the appliance should contain the following accessories:

• 1 power cable
• 1 remote control VRC-13
• BT antenna
• this manual

DESCRIPTION OF THE APPLIANCE

Despite the fact that development is constantly moving in the direction of digital audio format and towards audio video systems with an increasing number of channels, high quality stereo systems still enjoy a large degree of popularity. Some users are put off by the installation of complex multichannel systems and enjoy viewing DVD films in stereo. Other music enthusiasts do not want to switch to a surround sound system because that will never reach the sound quality of an equal-ly prized High-End stereo system. Especially if a space-saving second audio system at home should not also save on sound quality, stereo integrated amplifiers are preferred.
The SV-228MK is a remote-controlled stereo integrated amplifier. It has been included in Vincent’s range as the best-equipped hybrid integrated amplifier.

However, the main focus has been on the amplifier circuitry which combines the advantages of both transistor amplifiers and valve amplifiers and also sets standards. The device also has enough power to drive and control two pairs of common loudspeakers. Other equipment features are the circuitry control of other devices (Power Control), a headphone output, tone control that can be switched off, a Loudness function, remote control and a switch between the two pairs of loud speakers. The highest manufacturing quality and excellent value for money go without saying. This amplifier is the ideal partner for Vincent CD players and headphone amplifiers. In combination with speaker cables from the range, one can build a perfectly harmonious system.

FRONT VIEW

1. INPUT: Input Selector
   One of the six audio sources connected to the amplifier inputs can be selected for playback here. The LED above the dial associated with the selected input is lit as long as the amplifier remains switched on and is not muted.

2. Infrared receiver for the remote control

3. VOLUME
   The volume of the loudspeakers and the speakers may be increased or decreased with this knob.

4. SPEAKERS
   With this switch you can turn loudspeaker outputs A and B on and off separately.

5. TONE
   Bypasses the tone control that has been set with the BASS and TREBLE dials.

6. BASS
   For setting the bass proportions (low frequencies) of the sound.

7. POWER: Mains switch
   This is the main power switch for turning on and off the device. When switched off, the device is disconnected from the mains. The switching operation is signalled via the cables connected in the terminal “POWER CONTROL” (18).

8. TREBLE
   For setting the treble proportions (high frequencies) of the sound.

9. LOUD: Loudness function
   This button activates and deactivates an audio signal correction that adapts the speaker audio signal to the human auditory sensation in the lower volume range.

10. PHONES
    If desired, you can connect a set of headphones with an impedance between 32 Ohm and 600 Ohm to this stereo jack. As long as the headphones are plugged in, the loudspeakers are switched off. The volume of the headphone can be changed with the rotary knob “VOLUME” (3)(27). Before plugging-in a headphone, the volume setting should be reduced.

11. VU-Meter
    These displays show the range in dB and the direct voltage generated out of the music signal. This voltage is in accordance with your volume sensitivity.
    REAR VIEw
    

12. DIGITAL IN: Optical/Coaxial Connections for audio signals of source devices with digital sound such as, for example, DVD players. “Optical” for optical fibre connection and “Coaxial” for connection via coaxial cable.

13. BT ANT
    Connection for the BT Antenna

14. PRE OUT: Preamplifier output
    With these two pairs of connectors you can connect the preamplified stereo audio signal of the currently selected source to additional power amplifier channels or an active subwoofer. The signal of this output is independent of the “SPEA-KER A/B” setting (4) and the plugging-in of a headphone (10).

15. REC OUT: Recording output
    If desired, you can connect a recording device like a CD recorder or a tape recorder to this output. The stereo signal of this output is identical to the output signal of the selected audio source at one of the inputs. It is independent of the volume setting (3)(27), the Tone control (5)(6)(8), the Loudness setting (9), the setting of the Speaker switch (4) and the plugging- in of a headphone (10).

16. INPUT: S3 – S4
    Here you can connect up to two source devices with stereo audio line level output.

17. MAIN IN (S6)
    Power Amplifier Input: This input is for connection of a stereo preamplifier or a source equipment with a pre output. Note that no high level output should be connected from a stereo source to S6. It is also not allowed to connect this to the „Pre-Out“(14) of the unit.

18. Colour VU-Meter
    Use this switch to change the colour of the VU-Me-ter.

19. POWER CONTROL (12V)
    These jack connectors (3.5 mm) send the signals for the standby control (12V Trigger).

20. AUTO
    Automatic shutdown in terms of eco design regulation
    If the unit is in non-use, this device switches off after about 15 minutes. It will then have a power consumption of less than 0.4 W. In order to switch on the device again, press the power button 1 time. This function could be completely switched off by putting the switch „Auto“ at the backside of the unit to „Off“. This device has got no standby or armed state. If you intend not to use the device for a longer period of time it is recommended to plug it off from the mains.

21. SPEAKER A/B: Speaker connectors Output sockets with screw clamps for connection of two pairs of loudspeakers. You can use loudspeaker cables with 4 mm banana connectors.

22. Voltage Selector:
    The voltage selector behind the pane allows switching the voltage from 230 V to 110 V.
    Refer to safety instructions for further information (p. 40, “Switching the Voltage”)

23. PHASE
    This LED lights up when the mains phase is incorrect. If this is the case, you should reverse the plug in your socket.

24. AC 220-240V: Mains connector
    To establish the power supply, connect the plugs of the power cable to the device and to a suitable wall outlet. The small plastic housing holds the fuse. Refer to the security precautions.
    BUTTONS OF THE REMOTE CONTROL

25. MUTE
    Pressing this button once mutes the speakers, the headphones (10), the recording output (15) and the preamplifier output (14). Pressing it again re- turns to the original volume.

26. Input selector buttons
    Select the input source you want to listen to with these buttons.

VOLUME and VOLUME
These buttons change the amplifier’s volume set-ting for the speakers, the headphone and the pre-amplifier output (14).

REMOTE CONTROL
Point the front of the remote control directly at the front of the appliance, making sure there are no objects between the remote control and the appliance.
The distance between the remote control and the appliance should not be more than 7 m, as the reliability of the remote control is affected beyond this range. Make sure that you do not point the remote control at an angle to the appliance, as beyond an angle of ±30° to the centre axis the appliance may not respond as well to the remote control.
Change both batteries if the distance at which the remote control can be used effectively decreases.

BATTERIES

Using batteries
Handling batteries incorrectly can cause battery acid to escape or an explosion in extreme cases. The batteries must be correctly inserted taking note of the polarity, which is marked in the inside of the battery compartment.
In order to make full use of the batteries’ life, do not mix new and used batteries. Make sure that you insert batteries of the same type.
Some batteries are rechargeable, others are not however. Take note of the precautions and instructions that are included on all batteries.
Remove the batteries if the remote control is not going to be used for a long time.
Under no circumstances must batteries be short circuited, taken apart or heated up.
For environmental reasons, used batteries should be disposed of in accordance with local environmental regulations and not put with domestic waste.
The remote control for this item utilizes Lithium button cells. In case of old appliance disposal put out this battery and dispose seperately!

Change/inserting the batteries:

1. Open the battery compartment of the remote control by pushing out the clip and pulling out the battery compartment.
2. Remove the optionally used battery and correctly insert the new button cell, as schematically shown in the battery compartment.
3. Close the battery compartment of the remote control.

INSTALLATION

Set up the cable links in a sequence as follows. Connect the power cable between device and power supply only after all other connections have been made.
DURING INSTALLATION PLEASE OBSERVE THE FOLLOWING ADVICE:

Protective caps
Prior to the first installation the protective plastic caps must be removed from all the connections used at the rear of the unit. RCA connections
Mechanically identical RCA plugs are available for input and output connections. Make sure that you do not get these connections confused during installation!

Make sure that you do not mix up the analogue inputs for right and left. The RCA plugs for these are mostly colour coded as follows: red for the right channel, black or white for the left channel. Speaker cable connections

Loudspeaker connections
The use of ready-made loudspeaker cables is recommended instead of connecting the cable’s central wire (strand) directly to the terminals. Banana plugs or cable lugs ensure high security from short-circuits and damage to loudspeakers or amplifier. Ensure that bare loudspeaker wires are never able to come into contact with each other or with the metal on the back of the housing.
Make sure that the positive and negative loudspeaker wires are connected correctly. You will notice a reduced sound quality if the connections are the wrong way round.
Only use loudspeakers with a nominal impedance of at least 4 Ohm.

Cable connections
Make sure that all plugs fit tightly. Inadequate connections can cause noise interference, failures and malfunctions.

To make the most of the components’ sound potential, only high quality loudspeakers and connecting cables, for example Vincent cables, should be used. Your local stockist will be glad to advise you about this.

CONNECTION OF THE SOURCE EQUIPMENT

Connect the outputs of the source devices with the inputs (16) of the amplifier. The output sockets on the source equipment are usually indicated by “Line Out”, “Audio Out” or “Front Out”. You will find information about ways to connect source equipment in their operating manuals.

To use a record player you need a so-called phono preamplifier (also called a equaliser preamplifier), which is installed in the signal path between the record player and one of the high-level inputs. Some models of record player already include this preamplifier and can be connected directly. You will find further information in this appliance’s operating manual. The stereo sound of appliances that use output connectors other than RCA (DIN plugs, jack plugs) can often also be used with the aid of adaptors. Up to tow line level stereo sources can be connected to these RCA inputs. The audio inputs “S4” and ”S5” (16) represent electrically equivalent standard line level inputs with RCA connection. They have an identical function and differ only in name.

CONNECTION OF A RECORDING DEVICE
If you want, you can use the RCA sockets “REC OUT” (15) on the back of the appliance to connect an analogue stereo recording device (e.g. CD recorder, cassette recorder etc.) or another appliance that is intended for receiving the unchanged, fixed stereo output level (line level) from the signal source selected on the amplifier at any given time. The output level is independent from the volume setting but reacts to the “MUTE” command. The output level is independent from the volume setting, the Loudness function, the tone settings (BASS, TREBLE, TONE), the position of the speaker switch (4) and the plugging- in of the headphones (10).

Connect this signal output to the signal input (“LINE IN”, “TAPE IN” oder “REC IN”) on the recording appliance using RCA cables. Please note that some recording equipment can have a slightly detrimental effect on the audio signal quality. Some recording devices have rather low input impedance, which can slightly alter the input signal voltage. For maximal music enjoyment we recommend that you connect to the “REC” terminal only for as long as the recording is actually being made.

CONNECTION OF TWO ADDITIONAL

MAIN AMPLIFIER CHANNELS
You only need the “PRE OUT” sockets (14) if you want to use a separate stereo amplifier or two mono amplifiers to supply two additional loudspeakers. This makes sense if you intend to use two more loudspeakers for stereo music playback, for example in a separate zone (another room of your home). These loudspeakers are then connected to the speaker outputs of the additional amplifier(s). The amplifier output connections “PRE OUT” (14) must be connected with the input connectors of the main amplifier, in most cases labelled “INPUT”, “POWER AMP IN” or “MAIN INPUT”.

Instead of the stereo main amplifier shown here you can alternatively use two mono main amplifiers. The output level is independent from the position of the speaker switch (4) and the plugging-in of the headphones (10).

CONNECTION OF A STEREO PREAMPLIFIER OR THE FRONT CHANNELS OF A MULTI- CHANNEL SYSTEM
This stereo amplifier is equipped with a main amplifier input („S6“), also known as „unity gain input“ (17). The input signals will bypass the internal preamplifier stage and are treated as preamplifier output signals. That is why this amplifier can be connected tot he output signal of a preamplifier or the front channels of a multi channel system (A/V receiver or A/V preamplifier). The volume control and muting can’t be achieved ath the SV-228 when using the input „S6“. These functions must be operated at the device connected to this input.

If the input „S6“ has been selected, the amplifier SV-228 acts like a stereo power amplifier. Please leave this input „S6“ unused if you don’t wish to use the SV-228 just as a power amplifier.

CONNECTION OF SOURCE DEVICES OVER OPTICAL IN AND COAXIAL IN
The integrated D/A converter makes it possible to receive also digital audio signals via an optical and/or coaxial cable and to transmit them analogously to the amplifier. Here, the  “Optical IN” and “Coaxial IN” (12) connections serve as input.

Digital audio source with optical signal connection

SWITCHING THE VOLTAGE
This device is equipped with a switch (22) that can be used to change the country-specific voltage from 230 V to 110 V.

Please never actuate the switch during operation! The voltage must only be switched by a technician, since the device fuse must also be replaced after actuation of the switch! Information about the device fuse can be found on the back of the device.
Unauthorised actuation of the switch will void any warranty claim!

CONNECTIONS FOR THE STANDBY CONTROL

(POWER CONTROL)
Many AV-Systems consist of a multitude of individual components. To avoid the necessity of switching them on and off before and after every use, many manufacturers have equipped their devices with what is known as “POWER CONTROL” circuit or “TRIGGER”. This kind of remote-controlled standby circuit is used primarily for preamplifier and power amplifiers. To employ these functions, direct or indirect cable connections must be made between the preamplifier (or integrated amplifier) and all the devices which support this function. The “POWER CONTROL” function operates in such a way that each switching on or off of one device in the system (usually the preamplifier) automatically brings about the switching on or off of all the connected devices which support this function. Please keep in mind that all devices which respond to the power control are not disconnected from the mains network when switched off. They are set to a standby state instead. For connecting cables, two-core cables with 3.5 mm jack plugs (mono) are used. For each connection between two devices one of those cables is needed.

If you don‘t wish to use this function or if the other components do not support it, all you have to do is leave out these cable connections.
The SV-228 is equipped with two output connectors for the power control. Here, the switching signal generated by the SV-228 is available for other components of the system. Two HiFi components that are able to react to the power control signal can be connected directly to the amplifier‘s power control outputs (19). If more than two devices, which can be controlled, are to be connected, then it is necessary to make the power control connection between the amplifier and these further devices through the outputs of the two devices which are connected directly. For that reason, every HiFi component that accepts power control signals is also equipped with a power control output. Thus, in theory it is possible to provide an infinite number of HiFi components with the power control signal. This approach, to loop a signal through a chain of components, is commonly referred to as “daisy chaining ”.

Many devices which can be controlled by a switching signal (not preamplifiers or integrated amplifiers), have two terminals which do not differentiate between input and output. In this case either of the two can be selected.
“POWER CONTROL” sockets of preamplifiers or integrated amplifiers must not be inter-connected! All receiving devices must not be connected to more than one preamplifier or integrated amplifier (directly or indirectly)!

CONNECTION OF HEADPHONES

A set of headphones equipped with a 6.3 mm jack can be plugged into the socket “PHONES” (10) on the front of the appliance.

By doing this, the loudspeakers are switched off. All headphones with an impedance of between 32 Ohm and 600 Ohm may be used. Unsuitable headphones with too low impedance may damage the amplifier or produce such unexpectedly loud volume that your hearing may be damaged. The volume (3)(27) should be reduced for safety reasons before a set of phones is connected.

CONNECTION OF THE LOUDSPEAKERS
Either a single speaker pair (A) or two speaker pairs (A+B) can be connected to the amplifier SV-228. Both outputs are identically provided with the stereo signal of the currently selected input source if outputs A and B have been activated (4). For each loudspeaker you will find two connector screws (positive + und negative –) at the amplifier‘s backside. One side of the speaker cable must be attached here. Each pair of screws has a label “R” or “L” nearby to clarify to which stereo channel it belongs. At the loudspeaker connection terminal there are similar connector screws or connectors. There, the polarity of each screw (+ or –) can be identified as well and the other side of the speaker cable associated with this speaker must be attached. Make sure only connector screws of the same polarity will be connected by each speaker cable wire: a knob marked “+” in the amplifier‘s terminal must be connected with a speaker‘s connector screw marked “+” as well.
Our sketch shows all connections necessary for one pair of speakers. If a second pair of loudspeakers is intended to be used, the connector screws of the lower row (speakers B) must be connected in a similar fashion to the additional speakers’ input connectors.

If every speaker is connected in a conventional way (a two core speaker cable for each loudspeaker) and you own loudspeakers that are equipped with Bi- Wiring terminals (four connector screws) you have to make sure that the metal brackets (contact pieces consisting of small metal plates or short pieces of cable which are supplied with the speakers) are applied to the terminal and that each one connects the two knobs of the same polarity (e.g. both connectors marked “+”). The connector screw labelled “+” and “R” at the amplifier‘s backside must be connected to one of the bridged, labelled “+” connectors of the loudspeaker assigned to the right stereo channel. Accordingly, the connector screw labelled “–” and “R” at the amplifier‘s backside must be connected to one of the bridged, labelled “–” connectors of the loudspeaker assigned to the right stereo channel. Connect the left side loudspeaker in the corresponding way.
If you are using ready made loudspeaker cables with 4 mm banana plugs, all you need to do is connect the two plugs on each loudspeaker cable end to the two associated speaker connectors. Turn the connector screws clockwise to fasten them.

If you want to use speaker cables equipped with spade lug connectors, every connector screw must be opened by turning counter clockwise. After that, the lug must be moved under the screw head. Then, turn the screw clockwise to fasten the lug to the connector. To avoid damages to the amplifier, make sure the connection is tight and no bare metal from the cable lug connector makes contact with the rear panel or with another terminal.

If no connector is to be used, remove approximately 1 cm length of insulation from each end of the speaker wire. Twist the braid in order to avoid short circuits. Turn the fastener on the loudspeaker terminal counter clockwise to loosen it and introduce the bare wire end into the exposed connector hole. Then turn the fastener clockwise so that the wire is firmly clamped. Make sure the connection is pretty tight.

One special feature of this amplifier is the option to connect two pairs of loudspeakers and to turn them on or off individually by means of a switch on the front (4). This can be used to activate and deactivate the music playback to both places where the pairs of loudspeakers are set up in any desired combination (only A, only B, A and B together or both switched off) without having to pull out the loudspeaker cables.

If you intend to connect two pairs of speakers, all loudspeakers must have a nominal impedance of at least 8 Ohm. If only one pair of speakers is used (A or B), all types of loudspeakers with a minimal nominal impedance of 4 Ohm can be utilised.
Consider correct polarity, the positive contact is mostly marked red or with “+”. The side of the speaker cable that has to be connected with the positive socket has a marking.

CONNECTION OF THE POWER CABLE
Check that the electricity supply to your home is appropriate to the device. The required voltage and frequency can be read on the back of the device beside the socket for the mains. If the electricity supply is appropriate, push the inlet connector of the supplied mains cable firmly into socket for the mains on the back of the device (23). Connect the other end of the mains cable to a mains socket.

OPERATING THE APPLIANCE

Switch on and off

|

POWER (7)

| The amplifier is switched on and off using this button at the front panel, there is no standby option. When switched off the device is internally separated from the AC power. When switched on, one of the LED’s near the input selector (1) is lit. As a precaution, before switching on, the volume set-ting (3)(27) should be reduced. The switching operation is signalled via the cables connected in the terminal “POWER CONTROL” (19).

Select an input

|

INPUT (1)

Input selector buttons (26)

| On the front panel: if the “INPUT” dial is turned clockwise or in the opposite direction, each of the input channels will be selected in turn and this switches the playback between the devices connected to the corresponding input sockets (12, 13, 16). The relevant LED lit over the “INPUT” selection dial shows which source is currently selected.

Using the remote control: A short touch on the button for the desired input channel (e.g. “S1” changes to the playback of the audio source connected there.

The illuminated LED near the input selector (1) indicates which audio source is currently selected for playback. Before switching over the input channel, the volume (3)(27) should be turned down as a precaution!

Change the volume

|

VOLUME (3) VOLUME

(27)

| On the front panel: Turn the knob “VOLUME” clockwise to turn up the volume and counter-clockwise to turn it down.

Using the remote control: Hold down the button “VOLUME ” to turn the volume up. Use “VOLUME ” to turn it down.

The volume setting affects the signals for the loudspeakers and additional main amplifier channels (14) but never influences the signal at the output “REC OUT” (15). If a pair of headphones is plugged into the front of the device, the volume control no longer affects the loudspeakers but instead affects these headphones.

Mute the speakers and the preamplifier output

|

MUTE (25)

| The MUTE function can only be operated with the remote control. It switches off the loudspeakers, the headphones, the preamplifier output “PRE OUT” (14) and the recording output “REC OUT” (15). Pressing it again restores the volume to its original setting.

Change the treble pro-portions of the sound

|

TREBLE (8)

| With the “TREBLE” control dial on the front of the device you affect the proportion of higher frequencies in the sound. Turning it in clockwise direction increases the treble intensity and moving it in anticlockwise direction reduces it. In the middle setting the treble proportions of the input signals remain unchanged. The adjustment of the treble control only has an effect if the button “TONE” (5) has been pressed. This tone control affects the loud speaker and headphone signals as well as the output “PRE OUT” (14). The signal of the output “REC OUT” (15) is independent of this.
Operation| Button(s)| Description
---|---|---

Change the bass pro- portions of the sound

|

BASS (6)

| With the “BASS” control dial on the front of the device you affect the proportion of lower frequencies in the sound. Turning it in clockwise direction increases the bass intensity and moving it in anticlockwise direction reduces it. In the middle setting the bass proportions of the input signals remain unchanged. The adjustment of the bass control only has an effect if the button “TONE” (5) has been pressed. This tone control affects the loudspeaker and headphone signals as well as the output “PRE OUT” (14). The signal of the output “REC OUT” (15) is independent of this.

Switch off tone control (BASS/TREBLE)

|

TONE (5)

| If the sound is not to be changed, it is recommended that you switch off the sound control (BASS, TREBLE) with this button on the front of the device. When this button is pressed, the sound processing settings in the tone controllers (6)(8) come into play. If the button is not pressed, the two sound controllers in the preamplifier are bypassed and the signals from the source are not changed in terms of their frequency levels. The tone control affects the signal of the loudspeakers and the “PRE OUT” output (14). The signal of the “REC OUT” output (15) is unaffected by this.

Switch the audio signal correction for low volu- me on and off

|

LOUD (9)

| This function is operated from the front panel. It is a feature of audio amplifiers that permits the user to strengthen low and high frequen- cies compared with middle frequencies at the touch of a button. It thereby corrects the impression of volume at low volume. In an audio system, when the volume is small, low and high frequency ranges are insufficient because of the characteristic of human auditory sensation. This function should only be used at low volume. It has no effect on the signal of the output “REC OUT” (15).

Individually activate or deactivate speaker out- puts A and B

|

SPEAKERS (4)

| With this dial you can switch both pairs of loudspeakers (A and B) on and off in any desired combination. If this dial is set to “A”, only the pair of loudspeakers connected to the “SPEAKER A” connectors

receives the out-put signal. If the dial has been set to “B”, only the pair of loudspeakers connected to the “SPEAKER B” connectors receives the output signal. In the dial setting “A+B”, both pairs of loudspeakers are fed at the same time by the amplifier. In the “OFF” dial position both pairs of loudspeakers are switched off. In contrast to the mute setting (MUTE), the output signal of the preamplifier “PRE OUT” output (14) remains active in each of these cases.

Playback of music by Bluetooth

|

BLUETOOTH FUNCTION

| 1. Please select the Bluetooth input on the SV-228. Please turn the input selector until the LED flashes at the input S3/BT. 2. Please activate the Bluetooth connection on your smartphone, tablet or computer

3. Please select the search for new Bluetooth devices on your smart- phone, tablet or computer. You will find the SV-228 under the name

„Vincent“ inside the list.

4. Please choose „Vincent“ und start the connection

5. The SV-228 is connected to your smartphone, tablet or computer and you can start the playpack.

TIPS

Burn in/ Warm up
Your audio components need a certain time period until they reach maximum performance. The duration of this “warm up“ time is very different for the various elements of your audio system. Higher and homogeneous sound quality is achieved while keeping the device switched on.
Your audio specialist dealer has enough experience to give you more information.

Net frequency noise
Some audio source devices may in combination with the amplifier cause a humming noise at power line frequency audible from your speakers. Usually, its volume varies with the volume setting of the amplifier. This is no sign of a defect or fault of your audio products but has to be eliminated. Generally, every wall-powered device connected to the ground wire of the power plug can cause this problem when connected to the amplifier.
Experience shows that this problem is mainly caused by antenna-connected components (as TV sets or Tuners), personal computers, electrostatic loudspeakers, subwoofers, record players or headphone amplifiers that are connected to the audio inputs of the amplifier. Another possible reason for humming noise is electromagnetic interference of other components’ power supplies with pick-up-systems of record players (change the place of the record player for a test).
In most electric devices the ground potentials of all signals are connected to each other at one central point, where they have one common connection. If the device uses the protective conductor of the wall outlet, the corresponding wire of the line cord is connected intractably to the metal housing of the device. This is mostly the point where the central grounding point is attached to. By doing this the housing is able to shield all signals from external radiated noise. Some main amplifiers are equipped with a „Ground Lift“ switch. If it is activated, ground potential of the chassis and the protective ground wire are being separated from the central signal ground point. The protective ground wire keeps its function. Sometimes this helps prevent noise caused by errors in grounding.
If the problem occurs and cannot be solved by yourself your audio specialist dealer will help you.

SEARCH FOR ERRORS

Unit does not

work after pressing the power button

| Mains cable is not connected to a suitable mains wall outlet.

Mains cable has not been firmly inserted into wall power socket and the device’s socket. Otherwise it may be defective.

Unit fuse or unit is defective.

| Connect to a functioning socket using a suitable mains voltage.

Check the power cable. If necessary, ex- change it with a suitable mains cable and push its plug firmly into wall socket and the device‘s power connector.

Contact your dealer.

No sound, appliance is switched on (one of the input LED’s

on the front of the device is lit)

| The currently selected audio source (1) (26) is giving no signal.

One of the audio settings of a connected DVD player (analogue/digital) has not been correctly selected.

| Switch on the source unit and begin play- back.

Correct the settings in the player’s setup.

 | The output of the source device is not connec- ted or is wrongly connected e.g. not connec- ted to the selected input channel terminal of the preamplifier.| Correct the connection.
 | Wrong input channel has been selected.| Set the amplifier (1)(26) to the input that your desired source is connected to.
 | Volume setting is set too low.| Carefully increase the volume (3)(27).
 | The amplifier is muted (MUTE-Function).| Deactivate the MUTE function (25) after, as a precaution, reducing the volume level.
 | A pair of headphones is still connected (10) so the loudspeakers are switched off.| Pull the headphone plug out of the device. The volume should first be reduced for safety’s sake.
 | The loudspeakers connected have been turned off with the “SPEAKERS” dial (4).| Move this dial to a suitable position for the connected loudspeakers (e.g. “A” if a pair of loudspeakers is connected to the clamps “SPEAKER A” (21).
 | The speaker cables are not properly connected to the amplifier‘s terminals or are defective.| Check and tighten the speaker cables at the amplifier (21) and the speakers.
No audio playback on one channel| The source equipment is giving signal on only one channel.

One of the signal cables between audio source and preamplifier inputs has not yet been plugged in or is defective.

One of the loudspeaker cables or one of the signal cables between pre and main amplifier is not correctly connected or it is faulty.

| Check the audio source. You can try to use it at a different amplifier for a test.

Check the cable connections, tighten them if necessary.

Check all the connections of the main amplifiers and whether the loudspeakers are working.

dirty or a cable is defective.

The tone settings on the dials “TREBLE” or “BASS” have not been selected correctly.

A record player has been connected to a line level input without using a phono preampli- fier.

| Check the cables and cable connections.

Check the settings selected there.

Interconnect a phono preamplifier.

The remote control cannot perform any functions| No batteries inserted in the remote control, batteries are not inserted correctly or are depleted.

The line-of-sight between the remote control and the unit is obstructed, the range was exceeded or the hand unit was operated from a position too far to one side.

The unit is not switched on.

| Check and replace the batteries if necessary.

Try to point the remote control at the front of the unit only when the sight- line is clear, within a 7-metre distance and, if possible, facing the unit.

Switch on the unit.

Humming low frequency noise is audible, even as no audio source is playing back| See section “Net frequency noise” in the chapter “Tips”.

TECHNICAL SPECIFICATIONS

Frequency Response:

• Nominal Output Power RMS / 8 Ohm:
  • 20 Hz – 20 kHz (± 0.5 dB)
  • 20 Hz – 50 kHz (± 2 dB)
• Nominal Output Power RMS / 4 Ohm:
  • 2 x 100 Watt
  • 2 x 180 Watt
• Total Harmonic Distortion: < 0.1 % (1 kHz, 1 W)
• Input Sensitivity:  560 mV
• Signal to Noise Ratio: >90 dB
• Input Impedance: 47 kOhm
• Max. Power Consumption: 350 Watt
• Inputs:
  • 2 x Stereo RCA
  • 1 x Coaxial
  • 1 x Optical
  • 1 x Stereo Main In
• Outputs:
  • 1 x Stereo Pre Out
  • 1 x Stereo Rec Out
  • 4 x 2 Speaker Terminals
• Tubes: 1 x 6N4, 2 x ECC82
• Playable Digital Formats: WAV, FLAC, APE, LPCM, MP3, AAC, AC3, WMA
• Colour: Black, Silver
• Weight: 15.5 kg
• Dimensions (W x H x D): 430 x 152 x 450 mm

FURTHER INFORMATION AS DEFINDE BY THE ECODESIGN REGULATION

• Power consumption in OFF-mode: <0,4W
• Power consumption in auto standby mode: <0,4W
• Power consumption in cross-linked standby mode (BT): <4W

Time without input signal until auto-standby: 15 min. (autostandby can be switched off).
The wireless cross-link port (BT) can be deactivated (switched off) with the input selector (INPUT).

GLOSSARY

Audio Sources/Source devices
These are the components of your HiFi system and all other appliances, whose sound you want to hear over the system and are thus connected to the preamplifier, amplifier or receiver. This includes CD players, DVD players, tuners (radios), cassette players, DAT recorders, personal computers, record players, portable audio devices and many more.

dB Level
This is a way of describing any physical quantity; it is a common measurement for signal voltages and the volume. It is given in decibels (dB). Alternating signal voltages below 1V (RMS) are described as “line level” voltages, which are suitable as music signals for amplifier inputs. Inputs on amplifiers (mostly represented by RCA sockets), which are designed for signals on the CD player, tape recorder, DVD player etc. are also referred to as “line level inputs”. Those signal inputs must not be confused with inputs that accept preamplified signals.

Dynamic
The volume difference between the quietest and the loudest sounds possible in audio signals (without distortion or transition to noise). Dolby-Digital and DTS soundtracks allow very high dynamics and produce excellent cinema-like effects.

Input sensitivity
Term for the smallest average (RMS) input voltage which causes the maximum output power at the maximum volume setting on the amplifier. Examples: 100 mV to 500 mV (Millivolts) on line level inputs, 2 mV to 5 mV on the phono MM input or 0.1 mV to 0.5 mV on the phono MC input.

RCA
RCA is the American name for a type of coaxial connector and sockets, originally the abbreviation for “Radio Corporation of America”, the name of a United States company. Both the plug and cable consist of a rod-shaped inner lead and a cylindri-cal-shaped outer lead. This enables a mono audio signal or a video signal to be transmitted. Compared to the XLR plug connector, this type of connection is also called “unbalanced signal connection”.

Please keep the receipt, store it together with this manual. The receipt is your proof for the beginning of the warranty period. Note the serial number in the following box, you can read it from the rear side of the device.

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