quadral quad-130110 Phase 16 Portable Speaker Instruction Manual
- June 5, 2024
- quadral
Table of Contents
USER INSTRUCTIONS
First of all, thank you for deciding on quadral loudspeakers.
It is to satisfy the high expectations of music lovers and connoisseurs
such as you that we build loudspeakers of a class that is well above
average. Even though you may already be familiar with them, we list
below a few ground rules that will enable you to make optimal use of
your loudspeakers.
Safety advise for passive loudspeakers
Please take time to read through the manual carefully and follow all the steps describing how to set up and operate the loudspeakers. Keep the manual somewhere you can quickly access it should you have any questions later on.
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The stability of loudspeakers (especially large units) depends on the nature of the surface on which they stand. Carpets are often very poor for stability. Even an average bump can cause a loudspeaker to fall over and be a hazard for persons or pets in the vicinity. Stability can be significantly improved by using “spikes”, but care should be taken during assembly as the sharp points can cause injury and the spikes can damage the floor. On smooth floors, the loudspeakers can be stabilized with Velcro or double-sided tape. Loudspeakers should never be used as a seat or as a substitute for a ladder!
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Use only wheeled furniture, stands or wall mounting systems, and other devices for attaching and installing the products, which are available from the manufacturer and are sold for or with the product. To avoid damage or injury through tipping over, please be careful when moving table devices or stands on which the speakers are mounted. If wall-mounting the product, take special care that all components are securely screwed! Additional securing equipment (chains, etc.) should be fitted.
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The location for the loudspeakers should be dry and not too cold. Constant high humidity or strong sunlight (UV radiation) can cause your loudspeakers to age prematurely and consequently affect their functioning.
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Very high volume levels for long periods of time are not only annoying for your neighbors but can also be harmful to the health of the user!
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When loudspeakers are overloaded with very high volume levels, there is a risk of individual components in crossover circuits or individual speakers burning out.
In particularly bad cases, it is even possible for a fire to break out inside a speaker.
Speakers operated at these extremes should therefore not be left unattended. -
At high volumes, voltage levels of 30–50 V can be present at speaker terminals and components. Be very careful not to touch uninsulated terminal contacts of speakers when in operation. To avoid injury, never put hands or arms into sound outlets (bass reflex tubes). Children and pets, in particular, are at risk from this.
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For safety reasons, we generally forbid the opening of loudspeaker cabinets when in operation or connected since, as explained in the above paragraph, voltages of up to 50 volts can be present inside.
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Improper handling of mains voltage can cause fatal injury!
Passive loudspeakers must on no account be connected to the electricity supply!
Speaker terminals may only be connected to the appropriate output terminals of the amplifier. You should never connect these terminals to the electricity supply (230 V/115 V) in any way since that will otherwise also immediately destroy the loudspeaker and all connected products. Avoid fitting plugs to ends of speaker cables that could even remotely be confused with mains supply plugs. -
Loudspeakers that are not magnetically shielded can affect the color of the TV picture or cause distortion. A distance of 50 cm is generally sufficient to avoid problems of this kind. Avoid placing items such as credit cards, diskettes, audio or video cassettes, or other magnetic media on the loudspeaker. This could destroy the information stored on them. Similarly, avoid operating magnetic tape devices in the immediate vicinity.
Setting up
To obtain optimal sound results, it is generally necessary to try out
different set-ups.
Since the room conditions have a major effect on sound reproduction, we
suggest below a few useful approaches for positioning your quadral
loudspeakers.
Main speakers (front)
Where the speakers are positioned in the listening space has a decisive effect
on their sound. Placing the speakers near the corners of the room will
essentially give you loud bass reproduction but with a little outline. On the
other hand, speakers positioned well away from the walls sound precise, but
also very bright and thin. The best solution is to place the speakers with at
least 30 cm between their backs and the nearest wall. To avoid
loud wall reflections, the distance from the sidewalls of the room can even be
50 cm or more. Bookshelf speaker units sound best on a speaker stand or shelf,
with the tweeters arranged at ear height. The cases should be angled and
slightly tilted to achieve this.
As far as possible, the speakers should be equidistant from the listening
position, while the distance of the speakers from each other can be rather
less than the distance from the listener.
Front center speaker
Due to the proliferation of plasma and LCD TVs, these speakers are no longer
shielded magnetically. This causes color and geometrical errors and can occur
on older TVs with picture tubes. Since it can’t be placed on the TV set, the
center speaker can be set lying down underneath it. The speaker should be at
least 30 cm from the television, and a minimum of 20 cm from the floor. Apart
from the above, we recommend angling the center speaker so that the tweeter is
aimed at the listener in order to enjoy its full sound potential.
Rear center speaker
In contrast to 5.1 surround sets, 6.1 systems have an additional rear center
speaker that should be placed behind and slightly above the typical listening
position.
Rear speakers
Whether you direct the rear speakers toward the listening position is a matter
of taste.
Also, many listeners prefer the rear speakers to be positioned above ear
height. This can be achieved by mounting the units on a sturdy wall bracket, a
high speaker stand, a sideboard, or a shelf.
Stands and wall brackets
To obtain optimal positioning of the front and rear speakers, the quadral
offers suitable stands and wall brackets. Some speaker models also have a
keyhole-shaped cut-out in the back of the speaker for wall mounting.
Should you have any questions, please contact us on tel.: +49 (0) 511 7904-0,
e-mail: ovs@quadral.com
Connecting to the amplifier
Before connecting the speakers to your hi-fi or surround system, make sure the amplifier/receiver is switched off and its status LED is not lit. To connect the speakers, you will need a two-core speaker cable for each speaker. Make sure these are of sufficient length and don’t shorten the cables before checking they are long enough to hide behind furniture or under the carpet. For cables longer than 5 meters, we recommend a cross-sectional area of at least 2.5 sq mm per core in order to avoid unnecessary power loss. Strip the insulation of the cores to a length of around 10 mm at both ends of the cable so that they are bared for good contact.
Screw terminals
For connection, the speakers are provided with color-coded screw terminals on
the back of the cabinet. Loosen the screw terminals and feed the stripped end
of the core into the hole that is now free. The two cores of speaker cables
have different coloring or shapes for recognition. Connect one core to the
red, positive terminal – the remaining core to the black terminal. Tighten the
screws hand-tight. To ensure correct polarity, check that the core connected
to the red, positive terminal of the speaker is also the core that is
connected to the red, positive terminal of the amplifier and that the other
core is connected to the black, negative terminals of both the speaker and
amplifier.
With some quadral loudspeakers, you can choose between three modes of operation.
a) Conventional mode
Do not remove the jumpers, connect the speaker cable as shown in the
illustration.
b) Bi-wiring mode
Open the jumpers after loosening the four screw terminals on the back of the
speaker and connect the cable as shown in the illustration.
c) Bi-amping mode
Open the jumpers and connect the cables as shown in the illustration.
In the bi-wiring/bi-amping mode, the bass frequencies are controlled via the
two lower terminals – and the midrange/treble frequencies via the two upper
terminals.
Make sure you use the correct polarities in these modes and that you remove
the jumpers on the speaker terminal to avoid damaging your amplifier.
Operation with a surround amplifier
Once you have positioned and connected your speakers as shown in the
illustration, you should perform the necessary settings in the bass management
system of your surround
amplifier.
Make sure you read the user manual supplied by your amplifier’s manufacturer
before doing this.
Since bass management primarily depends on the loudspeaker configuration, we give only typical settings below.
a) Small and very small satellite speakers must be operated in “small” mode.
Perform the setting on your amplifier as follows:
| Front: | small |
|---|---|
| Centre: | small |
| Rear: | small |
| Subwoofer: | yes |
b) There is no definitive formula for the settings for compact speakers. In
this case, the suitable mode may be “large” or “small”. This depends on the
volume level you prefer or the sound effect you wish to obtain (refer to the
section “Caution, clipping!”).
The settings on your amplifier can optionally be configured as follows:
| Front: | large/small |
|---|---|
| Centre: | large/small |
| Rear: | large/small |
| Subwoofer: | yes |
c) Floorstanding speakers or large bookshelf speakers that are suitable for
powerful bass reproduction should be operated in “large” mode.
Perform the setting on the amplifier as follows:
| Front: | large |
|---|---|
| Centre: | large |
| Rear: | large |
| Subwoofer: | yes/no |
For the special quadral center speakers, we generally recommend the “small” mode.
Subwoofer
If your surround amplifier has a “line subwoofer” output, you can make use of
this by using the Y cable shipped with the subwoofer (see illustration). In
this case, you connect
the front speakers directly to the front speaker terminals of your amplifier.
Refer to the connection diagram for wiring your surround system.
Refer to the user manual of the active subwoofer for the necessary settings on
your subwoofer!
Caution, clipping
Even if the rated output of an amplifier is significantly less than the load rating of the connected boxes, the speakers can easily be damaged by improper operation. This is because the rated output merely indicates how many watts the amplifier is capable of supplying to the speakers without distortion. When an amplifier is overloaded, it not only delivers a lot more power but also mixes in destructive direct current as well as high-frequency oscillations. This phenomenon is known as clipping and can be heard in the form of harsh distortion during loud passages. If you hear distortion, reduce the volume immediately to avoid damaging the speaker units. Amplifier clipping is a typical overload phenomenon that always occurs when you turn the volume and/or tone controls up too high. Even in the middle setting of the tone control, normal amplifiers reach their limits when loud pulses occur if you move the volume control significantly past the 12 o’clock position.
Tips for better acoustics
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Soft foam to prevent loud basses
Depending on the acoustic properties of the listening room and the positioning of the loudspeakers, bass notes can occasionally appear too loud.
Some quadral speakers are therefore shipped with pre-cut cylindrical pieces of large-pore foam.
If low basses are unpleasantly loud in the listening area, we recommend inserting this foam cylinder into the bass reflex tube of your quadral speaker. But avoid pushing it too far inside as you could have problems removing it afterward. A noticeable improvement in bass reproduction can be achieved this way. -
To achieve better acoustic isolation of the loudspeakers from the floor, some floor-standing speakers are designed to accept spikes. The use of the spikes can be advantageous, depending on the living room/floor.
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To achieve better acoustic isolation of center or shelf speakers from the surface on which they stand, some of these loudspeakers are shipped with 4 self-adhesive rubber feet.
Care of loudspeakers
Your quadral loudspeakers are best cleaned with a soft, dry cloth. The
aluminum housing is best wiped in a longitudinal direction with a damp cloth.
Do not use solvents.
You should only clean the loudspeaker systems (woofer, midrange units, etc.)
when they have become very dirty (small amounts of dust have no effect on the
acoustics). Use a soft, dry cloth or a soft brush with very gentle pressure,
otherwise, there is a risk of damaging the diaphragms.
We generally advise against cleaning the tweeter diaphragms because they are
extremely sensitive to pressure!
Light soil on the fabric front frame can be removed by tapping, with a vacuum
cleaner, or by using an adhesive tape when the front frame has been removed.
Heavier soil can be removed with a dry foam cleaner (such as Central spray).
Never use moisture to clean the front frame.
The technical details for your product can be found on the back of the speaker
cabinet or on the packaging!
| Fault | Cause | Rectification |
|---|---|---|
| Audible distortion even at low volume | a) Fault in the electronics | |
| b) Fault in the speaker | a) The fault lies in the electronics if the problem |
affects both speakers.
Swap over the left and right speakers if only one speaker is affected. If the
problem is still on the same channel, your electronics are faulty.
The speaker is faulty if the problem is now on another channel.
b) Please contact your dealer or our service (tel. +49 (0) 511-7904-0).
No sound| a) Cabling incorrect
b) Amplifier switched off| a) Check the cabling.
b) Switch on the system.
Slender, bright sound.
Sounds distant and unrealistic.| a) Incorrect polarity
b) Unfavourable set-up| a) Check to see if a terminal marked with + on the
amplifier has been inadvertently connected to a terminal marked with – on the
speaker or vice versa.
b) Set up the speaker closer to a wall, but maintain a minimum clearance of 5
cm between the back of the speaker and the wall.
Bass notes too powerful| a) Unfavourable speaker set-up (e.g. in the corner
of a room)
b) Bass control on amplifier set high| a) Move the speaker further away from
the adjacent walls.
b) Set the bass control on your amplifier to a neutral position.
Lack of treble| a) The tweeters are not properly aligned| a) Position the
speakers so that the tweeters are facing directly towards your listening
position.
HiFi / Surround Speakers
quadral GmbH & Co. KG
Am Herrenhäuser Bahnhof 26-28 · D-30419 Hannover
Tel. +49 (0) 511 / 79 04-0 · Fax +49 (0) 511 / 79 04-444
e-mail: info@quadral.com ·
www.quadral.com
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