Manual Quadral All (page 6 of 23) (English, German, French, Spanish)

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ENGLISH

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

1. 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 afterwards. A noticeable improvement in bass reproduction can

be achieved this way.

2. To achieve better acoustic isolation of the loudspeakers from the floor, some

floorstanding speakers are designed to accept spikes. Use of the spikes can be

advantageous, depending on the living room / floor.

3. To achieve better acoustic isolation of centre 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 aluminium

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 Centralin 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!

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Quadral All Manual

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