Magnat QUANTUM 677, QUANTUM 675, QUANTUM 673, QUANTUM CENTER 67 User guide

QUANTUM 677
QUANTUM 675
QUANTUM 673

QUANTUM CENTER 67

OWNER’S

MANUAL/WARRANTY DOCUMENT

Bitte führen Sie das Gerät am Ende seiner Lebensdauer den zur Verfügung
stehenden Rückgabe- und Sammelsystemen zu.

At the end of the product’s useful life, please dispose of it at appropriate
collection points provided in your country.

Une fois le produit en n de vie, veuillez le déposer dans un point de recyclage
approprié.

7

Abbildungen/Illustrations

37

Dear MAGNAT Customer,

Congratulations on your ne new loudspeakers and thank you very much for choosing MAGNAT! You

have made an excellent choice. The high-quality speakers produced by MAGNAT are renowned all over
the world.

Please study the instructions and information below carefully before using your new loudspeakers.

GENERAL INFORMATION ABOUT CONNECTING YOUR MAGNAT QUANTUM LOUDSPEAKERS

Please always use a good quality loudspeaker connection cable from an audio dealer. To prevent
impairment of sound quality, we recommend cables with cross-sections of at least 2.5 mm² for lengths
up to 3 m and at least 4 mm² for lengths above 3 m.

Always turn off the amplier or receiver before connecting or disconnecting loudspeaker cables. Place

the loudspeakers in their planned positions and cut the cables to the right length. The cables for both
channels should always be exactly the same length.

Strip 10 – 15 mm of insulation from the ends of the cables. Twist the ends – this is much better than tinning

them with solder – insert them in the terminals and tighten the terminal screws rmly. (Fig. 1)

For good sound it is imperative that the cables must be connected in such a way that the speakers are
“in phase”. This means that the black negative terminals on the speakers (-) must be connected to the

negative (-) terminals on the amplier, the red positive (+) speaker terminals to the positive (+) amplier

terminals. To make this easier one wire of most speaker cables is marked with a coloured strip or a ridge
in the insulation.

Before switching on the system double-check all your connections and make sure that the terminal screws

are tight and that there are no short circuits caused by stray wire laments – this could cause serious
damage to your amplier!

THE MAGNAT QUANTUM LOUDSPEAKERS IN STEREO MODE

In the ideal conguration the speakers and the listening position should form an equilateral triangle. When

the left and right speakers are the same distance from the listening position their sound arrives at the
same time, resulting in a harmonious, natural music reproduction. (Fig. 2)

There should be a clear line of sight between the loudspeakers and the listening position. Any sound-

absorbing or reecting obstacles in the path will distort the sound. When you install the loudspeakers the

following distances should be maintained:
Quantum oorstanders: at least 20 cm away from the rear wall and at least 30 cm from the side walls.

This will prevent excessive emphasis of the bass range.
Quantum bookshelf speakers: shelf loudspeakers should also be as free-standing as possible, the

distance to the sides and rear to walls and items should be at least 10 cm, the tweeters should be located
at ear height.

Spikes (Quantum oorstanders): you should use the supplied spikes when setting the speakers up.
This isolates them from the supporting surface, preventing unpleasant resonance effects. You can
choose between metal and hard rubber spikes for the standing speakers. The spikes are screwed into
the threaded bushes on the bottom of the speaker.

MAGNAT QUANTUM LOUDSPEAKERS AS A FRONT OR REAR LOUDSPEAKER

The front loudspeakers are positioned at ear height on the left and right as equidistant from the television
as possible. The rear loudspeakers are placed at ear height or a little above on the left and right besides
or better behind the listening position. (Fig. 3)

7

MAGNAT QUANTUM 677, 675, 673 – BI-WIRING AND BI-AMPING

Bi-wiring means using separate cables to carry the high and low audio frequencies. Bi-amping takes this

idea one step further and uses separate power ampliers as well as separate cables for high and low

frequencies. Bi-amping in particular produces an additional improvement in sound reproduction quality.
The special connection terminals of the Quantum loudspeakers support both conventional connection

and operation in bi-wiring and bi-amping modes. There are four screw terminals on each speaker. The
top pair are for the tweeter (high frequencies), the lower pair for the woofer (low frequencies). The
factory-installed metal strips connecting the positive and negative terminals are for conventional 2-wire
connection and must be removed for bi-wiring and bi-amping operation. The pictures below show the
correct set-up for conventional operation (Fig. 4a), bi-wiring (Fig. 4b) and bi-amping (Fig. 4c).

MAGNAT QUANTUM CENTER 67

The Quantum Center 67 loudspeaker visually and acoustically ideally matches the other Quantum
models. The loudspeaker is placed immediately on or under the television set. Otherwise please adhere
to the general recommendations outlined in the previous chapters.

MAGNAT QUANTUM 6725A

The Quantum 6725A active subwoofer visually and acoustically ideally matches the other loudspeakers
in the Vica series. Please refer to the separate operating instructions supplied with this product.

CONNECTING TO AN AV RECEIVER

Figs. 5 and 6 show two different methods of connecting to AV receivers.
Fig. 5: AV receiver without subwoofer output.

Fig. 6: AV receiver with subwoofer output.

HOW TO AVOID DAMAGE TO YOUR VALUABLE SPEAKERS

All MAGNAT loudspeakers are designed and built for optimum sound reproduction with the tone controls

in the central position – i.e. with “linear” amplier output. Turning up the bass and treble controls too far

delivers more power to the woofers and/or tweeters, and at high volumes this can actually destroy the

speaker units!

If the output of your amplier is signicantly higher than the rated power handling capacity of your

speakers extremely high volumes can physically destroy your speakers. This doesn’t actually happen
often but you should be aware that it is possible.

Weak ampliers with low output ratings can actually be more dangerous for your speakers at medium
volumes because weak ampliers may overload much faster than powerful ones and this causes

measurable and audible distortion, which is extremely dangerous to your loudspeakers.

Always turn the volume down immediately as soon as you hear distortion! If you like listening to loud music
make sure that your amplier can deliver at least as much power as the speakers’ power-handling rating.

THE SOUND YOU CAN’T HEAR...

Ampliers, tuners and CD players can all produce inaudible high-frequency signals – and this doesn’t
only apply to cheap products. If your tweeters fail at low or medium volumes you should have a qualied

technician check your system components for dangerous inaudible signals.

8