Pioneer GM-202X1H/ES Handbuch - Seite 5

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Three-channel mode {stereo + mono}

The power amplifier ig basically a two-

channel/one-channet bridgeabie amplifier,

but three channels can be achieved by

combining the stereo and mono

modes

using inductors and capacitors. See Figs. 16

and 17 for details of wiring.

+ The foliowing Figs. 16 and 17 require

advanced understanding of electronics.

# you do not understand the diagram,

please have the work done by your

nearest authorized Pioneer installation

specialist.

Three-channel mode, two-way system

Green cover

eft)

Woofer

{mono}

Mid-high

(right)

Biack cover

Fig. 16

Three-channel mode. three-way system

High

md. von) D

tet

Nadi

mid owes) SY

det

Wooler!

sub

woofer

imono}

Migs

Pe Laghsdeat

Green cover

mid-bass:

(right

Highy

rae

mid-high

fright)

Fig. 17

» The inductor (L7 or L2 in the diagram)

acts as a low-pass filter. The capacitor (C1

or C2 in the diagram) acts as a high-pass

filter. The inductor (L) shail be used on

the woofer/sub-woofer, and capacitor (C)

shall be used on the high/mid-high

Remember when bridging an amplifier it

will see only half of the original speaker

impedance.

Therefore, you must use

speakers that have ratings of 4 ohms or

higher. If you use speakers that have

lower impedance ratings it may cause

damage fo the amplifier.

When the inductors and capacitors are

connected to the speaker wires, secure or

solder them so they cannot be pulled

loose. Tape or use heat shrink on the

joints to prevent short circuits.

Black stripe.

Black cover

GM-202

,102

Setting the Filter Constant

Low pass filter (for sub-woofer/

woofer

6 dB/octave (Fig 18)

Fig. 18

High-pass fitter (for mid/mid-high}:

6 dB/octave (Fig. 19)

OaB ap -

6dB

P——ib,

o~ aed

Fig. 19

Band-pass fitter (combination of low-pass

fitter and high-pass filter for

mid-bass/mid):

6 dB/octave (Fig. 20)

11. OPERATIONS AND CONNECTION(GM-102/X1H/UC)

12}

{6}

{6} (5)

{17}

Fig. 21

{2}

{16}

Fig. 22