Vincent SV-237MKII Integrated Hybrid Class A Stereo Amplifier Instruction Manual

Vincent SV-237MKII Integrated Hybrid Class A Stereo Amplifier

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 qua-lified professionals. The product is only permitted for connection to AC 230Volt/50Hz, 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 con-nect or remove other components or loudspeakers, disconnect or connect it to the mains power, lea- ve it unused for a longer period or want to clean its outsi-de. 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 li-quids, 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 ob-jects get inside the appliance (ventilation slots etc.). It must be disconnected from the mains power im- mediately and examined by a professional if this happens. Never expose the appliance to high temperatures direct sunshine or strong vibration.

Heat Build-up
Make sure that a gap of 5 cm remains around the appliance and that the surrounding air can circulate (do not install in enclosed cupboards). Vents must not be covered up.

Volume
The maximum tolerable volume is always rea-ched 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, lint-free 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 equip-ment on 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 direc-tives 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 dama-ges 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

• The lightening bolt tells you that dangerous voltages are present in the appliance, which can cause an electric shock.
• This symbol brings your attention to particularly important information regarding operation and maintenance.
• This symbol identifies useful information and advice about how to handle the appliance.

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-12
• this manual

DESCRIPTION OF THE APPLIANCE

Under the direction of Frank Blöhbaum, the circuit concept was completely revised and improved. A phase reserve of almost 90° was achieved in the power amp section through various changes. This phase reserve ensures a significantly better transient response on complex loads (speaker). Since the amplifier always works in the state of transient during normal operation – music are transient impulses – one hears these improvements elementary.

Musicality and sound are significantly better than the predecessor. Even the most difficult speakers can be driven effortlessly. The amplifier always manages the complex load (speaker) without to sound strained. The preamp section uses 6N1P tubes in the second stage. The larger voltage levels provide better large signal stability. This results in a higher spectral purity of the signal, which results in a further improved fine detail in the sound. The tube-typical musicality is retained and there is never an analytical coldness in the sound. Another advantage of the improved circuit design is a greatly improved signal- to-noise ratio. It turns out an excellent playback quality – even on high- efficiency speakers.

FRONT VIEW

1. TREBLE
   This is the knob for setting the treble proportions (high frequencies) of the sound.

2. BASS
   This is the knob for setting the bass proportions (low frequencies) of the sound.

3. Display window for the tube

4. INPUT: Input Selector
   This selector allows you to choose one of the six inputs.

5. VOLUME: Volume control
   This is the knob for the adjustment of the main volume level of the system.

6. TONE: tone control
   If deactivated, audio signals bypass the tone con-trol that has been set with the dials BASS (2) and TREBLE (1).

7. Input selection LEDs
   The LED that is actually lit shows you what input channel has been selected. Additionally these LEDs show that the appliance is switched on and not muted.

8. Infrared remote control receiver

9. POWER
   This is the main power switch for turning on and off the device. The amplifier is separated from the mains voltage when switched off and cannot be set into a standby state.

10. LOUD: Loudness function
    This button activates and deactivates an audio signal correction that adapts the loudspeaker audio signal to the human auditory sensation in

11. PHONES
    If desired, you can connect a set of headpho-nes with an impedance between 32 Ohm and 600 Ohm to this stereo jack. As long as the head-phones are plugged in, the loudspeakers are swit-ched off. The volume of the headphone can be changed with the rotary knob “VOLUME” (5)(25). Before plugging-in a headphone, the volume set-ting should be reduced.
    REAR VIEW

12. 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 preamplifier INPUTs. It is independent of the volume setting (5)(25), the Tone Control (1)(2)(6) and the loudness setting (10). As long as the amplifier is muted (22), the “OUTPUT REC” does not provide the music signal.

13. PRE OUT: preamplifier outputs
    With this pair of RCA connectors you can output the preamplified stereo audio signal of the current-ly selected source to power amplifier channels or an active subwoofer.

14. INPUT: input connectors
    Here you find three stereo RCA inputs for the source equipment with analogue stereo (line level) au-dio output.

15. 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.

16. BT ANT
    Connection for the Bluetooth antenna. Please connect the antenna here, if you want to use the Bluetooth function.

17. AC 220-240V:
    Power Connector with Fuse holder
    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.

18. POWER CONTROL (12V) OUTPUT
    At these jack connectors the signals for the on/off control (Power Control, Trigger) are emitted

19. SPEAKERS: Speaker connectors Output sockets with screw clamps for connection of one or two pairs of loudspeakers. You can use loudspeaker cables with 4 mm banana connectors. Please refer to the precautions in the section
    “Installation” in case two pairs of loudspeakers are connected.

20. Voltage Selector
    The voltage selector behind the panel allows swit-ching the voltage from 230 V to 110 V. Refer to safety instructions for further information (p. 44, “Switching the Voltage”)

21. AUTO
    Automatic shutdown in terms of eco de-sign regulation
    If the unit is in non-use, this device switches off af-ter 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 lon-ger period of time it is recommended to plug it off from the mains.

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 center axis the appliance may not respond as well to the remote control.
Change the battery if the distance at which the remote control can be used effectively decreases.

BATTERIES

Using battery
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.
Remove the battery 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 environ-mental regulations and not put with domestic waste.
The remote control for this item utilizes Lithium but-ton cells. In case of old appliance disposal put out this battery and dispose separately!

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 sche-matically shown in the battery compartment.
3. Close the battery compartment of the remote control.

BUTTONS OF THE REMOTE CONTROL

• 22. MUTE
  Pressing this button once mutes the speakers, the recording output (12) and the preamplifier output (13). Pressing it again returns to the original volume.

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

• 24. DIMMER: tube illumination setting This setting affects the brightness of the illumination of the tube display window (3).

• 25. VOLUME and VOLUME
  These buttons change the amplifier’s volume setting for the speakers and the preamplifier output (12).

INSTALLATION

Set up the cable links in a sequence as follows. Connect the power cable between de-vice 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.

Contacting the middle pin of the RCA plugs with the outer ring of the RCA chassis jack may lead to damages to the main amplifier if it is switched on!
To avoid this hazard, connect or disconnect only in switched-off state and more than one minute after deactivating!

Loudspeaker connections
The use of ready-made loudspeaker cables is recommended instead of connecting the cab-le’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 loudspea-ker 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 8 Ohm (if two pairs of loudspeakers are connected) and a nominal impedance of at least 4 Ohm (if one pair of loudspeakers is connected).

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 dealer will be glad to advise you about this.

CONNECTION OF THE SOURCE EQUIPMENT
Connect the outputs of the source devices with the inputs (14) 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 pream-plifier), 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.

You can connect up to three devices with analogue RCA stereo high level output such as a CD player in order to provide the audio signals of your input sources to the system. All three inputs represent electrically equivalent standard high 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” (12) 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 of the Volume setting, the Loudness function and the Tone control (BASS, TREBLE, TONE). Please note that while the amplifier is muted (22) the recording output is switched off.

Connect this signal output to the signal input (“LINE IN”, “TAPE IN” or “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 (13) 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 ampli-fier output connections “PRE OUT” (13) must be connected with the input connectors of the power ampli-fier, 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 or an active subwoofer.

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” (15) connections serve as input.

Digital audio source with optical signal connection

Digital audio source with coaxial signal connection

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. Particularly for preamplifiers and main amplifiers this kind of remote standby control is utilized, as power amplifiers are often placed far from other de-vices near the speakers. 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-237MKII is equipped with two output connectors for the power control. Here, the switching signal generated by the amplifier 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 (18). 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”.

CONNECTIONS FOR THE STANDBY CONTROL (POWER CONTROL) 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” (11) 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 (5)(25) should be reduced for safety reasons before a set of phones is connected.

CONNECTION OF THE LOUDSPEAKERS
Either a single pair of loudspeakers or two speaker pairs can be connected to the amplifier SV-237MKII. Both stereo outputs are identically provided with the signal of the currently selected input. For each loudspea-ker 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 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.

CONNECTION OF THE LOUDSPEAKERS
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. 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 connected, all types of loudspeakers with a minimal nominal impedance of 4 Ohm can be used. 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 whether the wall socket provides the appropriate mains power, which is the case if it is supplied with 230 V AC 50 Hz. Push the plug on the power cable supplied firmly into the power socket (17) on the back of the appliance. Plug the other end of the power cable into a mains socket.

SWITCHING THE VOLTAGE
This device is equipped with a switch (20) 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 swit-ched 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.
Unauthorized actuation of the switch will void any warranty claim!

OPERATING THE APPLIANCE

this button at the front panel. It has no standby option. When switched off the device is internally separated from the AC power. The LED associated to the selected input channel (7) will be illuminated if the device is switched on and not muted. As a precaution, after switching on, the volume setting (5)(25) of the preamplifier should be reduced.
Select an input| INPUT (4)
Input selection keys (23)| At the front panel: If you turn the selector knob “INPUT”, you select one of the devices connected to the inputs on the back of the SV-237 MKII (14/15/16) for playback. 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 LED associated to the selected input channel will be illuminated at the front of the appliance. Before switching over the input channel, the volume (5)(25) should be turned down as a precaution!

Change the volume| VOLUME (3) VOLUME / (25)| At the front panel: Turn the knob “VOLUME” clockwise to turn up the volume and counter-clockwise to turn it down. Using the remote

control: Press and hold the button “VOLUME ” to raise its value. Use

“VOLUME ” to lower the volume level. The volume setting controls the speakers and the signal level at the “PRE OUT” (13) but does never influence the signal at the output “REC OUT” (12).

Mute the speakers and the preamplifier output| MUTE (22)| The MUTE function can only be activated or deactivated with the remote control. It switches off the loudspeakers, the preamplifier output “PRE OUT” (13) and the recording output “REC OUT” (12). When

the amplifier is muted, the LED in the volume knob will be blinking and the LED of the selected input is switched off. Pressing the MUTE button again restores the volume to its original setting.

Change the treble pro- portions of the sound| TREBLE (1| With the “TREBLE” control knob on the front of the device you affect the proportion of higher frequencies in the sound. Turning it in clockwi- se 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” (6) has been pressed. This tone control affects the loud-speaker and headphone signals as well as the output “PRE OUT” (13). The signal of the output “REC OUT” (12) is independent of this.
Change the bass proportions of the sound| BASS (2)| With the “BASS” control knob 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 di- rection 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” (6) has been pressed. The bass setting influences the signal of the loudspeakers and at the “PRE OUT” (13). The signal of the output “REC OUT” (12) is independent of this.
Switch off tone control (BASS/TREBLE) TONE| Tone (6)| 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 de- vice. When this button is pressed, the sound processing settings in the tone controllers (1)(2) 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.
Switch on/off the audio signal correction for low volume on and off| LOUD (10)| 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 recording output “REC OUT” (12).
Change the brightness of the tube window illumination| DIMMER (24)| The display window for the visible tube (3) can be illuminated with one of four brightness settings, if that is desired. Initially the brightness setting is at maximum. By repeatedly pressing “DIMMER” lower illumination levels are available. After switching off the preamplifier the brightness setting is saved until you use the device again.
Playback of music by Bluetooth| Bluetooth Function|

1. Please select the Bluetooth input on the SV-237 MKII. 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-237 MKII under the name „Vincent“ inside the list.
4. Please choose „Vincent“ und start the connection
5. The SV-237 MKII is connected to your smartphone, tablet or compu- ter and you can start the playpack.

TIPS

Burn in/ Warm up
Your audio components need a certain time pe-riod 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, electro-static 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 equip-ped 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

connected to a suitable wall outlet.

Power 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, exchange it with a suitable power cable and push its plug firmly into wall socket and the device‘s power connector.

Contact your dealer.

No sound on both channels although the unit is ready for use (one of the LEDs for the input selection (7) is lit).| The currently selected audio source (4)(23) 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 connected or is wrongly connected e.g. not connected to the selected input channel terminal of the amplifier.| Correct the connection.
| Wrong input channel has been selected at the amplifier.| Set the amplifier to the input that your desired source is connected to (4)(23).
| The Volume setting is set too low| Carefully increase the volume (5)(25).
| The amplifier is muted (MUTE function).| Deactivate mute function (“MUTE” button (22)).
| The speaker cables are not properly connected to the amplifier‘s terminals or are defective.| Check and tighten the speaker cables at the amplifier and at 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 amplifier inputs has not yet been plugged in or is defective.

One of the speaker cables is not correctly connected or is defective.

| 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 and refasten the speaker cables at the speaker terminal of the amplifier and at the speaker’s connectors. The cables coming from both the speakers of a speaker pair must

not be connected to different terminal sets (e.g. one A and one B) on the back of the amplifier.

Poor sound quality| The cable connections are not tight, the connectors are knobs or a cable is defective.

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

A record player has been connected to a line level input without using a phono preamplifier.

| 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: 20 Hz – 20 kHz +/- 0,5 dB, 20 Hz – 50 kHz +/- 2 dB
• Nominal Output Power RMS / 8 Ohm: 2 x 150 Watt
• Nominal Output Power RMS / 4 Ohm: 2 x 250 Watt
• Nominal Output Power Class A / 8 Ohm: 2 x 10 Watt
• Harmonic Distortion: < 0,1 % (1 kHz, 1 Watt)
• Input Sensitivity: 300 mV
• Signal-Noise Ratio: > 90 dB
• Input Impedance: 47 kOhm
• Max. Power Consumption: 563 Watt
• Inputs: 3 x Stereo RCA, 1 x Optical, 1x Coaxial, 1 x Bluetooth
• Outputs: 1 x Stereo Pre Out, 1x Stereo Rec Out, 4 x 2 Speaker Terminal, 2 x 3,5 mm Jack (Power Control)
• Tubes: 1 x 12AX7, 2 x 6N1P
• Playable Digital Formats: WAV, FLAC, APE, LPCM, MP3, ACC, AC3, WMA
• Color: Black / Silver
• Weight: 20.4 kg
• Dimensions (WxHxD): 430 x 150 x 435 mm

Sintron Distribution GmbH hereby declares that this product complies with the Radio Equipment Directive 2014/53/EU. The corresponding EU declaration of conformity is available at the following internet address: www.sintron.de/KE

FURTHER INFORMATION AS DEFINDE BY THE ECODESIGN REGULATION

• Power consumption in OFF-mode: <0,4 W
• Power consumption in auto standby mode: <0,4 W

Time without input signal until auto-standby: 15 min. (auto standby can be switched off).

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 si-gnals for amplifier inputs. Inputs on amplifiers (most- ly 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 in- puts”. 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 max-imum 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 connectors 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 cylindrical-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”.

Bewahren Sie die Kaufquittung zusammen mit der Bedienungsanleitung auf. Die Kaufquittung dient Ihnen als Nachweis für den Beginn der Garantiezeit. Die Seriennummer befindet sich an der Rückseite des Gerätes.
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.

Seriennummer: Serial number: Numéro de série:

Website: www.vincent-highend.de

© Juni 2022
International Distributor: Sintron Distribution GmbH · Südring 14 · D-76473 Iffezheim

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