Bedienungsanleitung Marantz Model 2252 (Seite 7 von 20) (Englisch)

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SPEAKER SYSTEM 1

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SPEAKER SYSTEM 2

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FM QUADRADIAL OUTPUT JACK

Figure 4. Loudspeaker System Connections

Iy breaks the internal connections to prevent the

external equipment from being bypassed.

In anticipation of future four channel quadrapho-

nic broadcasting, your Model 2252 is equipped

with an FM QUADRADIAL OUTPUT jack. The

signal available at this jack is the unequalized

buffered output of the FM discriminator. Its

level, frequency response characteristics, and out-

put impedance are ideal to drive a four channel

adaptor. This jack can also be used as a simple

"white noise" generator for checking the response

characteristics of loudspeakers of amplifiers. For

this application, connect the FM QUADRADIAL

OUTPUT jack to the TAPE 1 input jack, pressthe

TAPE 1 MONITOR switch, place the Model 2252

in FM mode with the muting off and tune

between FM stations to receive interstation noise.

PRE OUT AND MAIN IN JACKS

The PRE OUT jacks deliver the output of the

Model 2252 preamplifier circuits to the rear

panel. The MAIN IN jacks are the input terminals

of the power amplifier section of the Model 2252.

The PRE OUT and MAIN IN jacks are bridged

internally by special contacts within the jack

assembly. When you wish to use such equipment

as a graphic equalizer, compressor/limiter, or

expander, you may connect these instruments to

your Model 2252 with appropriate lengths of

shielded audio cables. When the external equip-

ment is connected, the insertion of its RCA

phono plugs in to the MAIN IN jacks automatical-

SPEAKE R SYSTEMS

The SPEAKER SYSTEMS terminals on the rear

panel can accommodate two stereo pairs of loud-

speakers. Connect the main pair to the SYSTEM

1 terminals. The SYSTEM 2 terminals are for a

second stereo pair of loudspeakers (see Figure 4).

Selection of loudspeaker systems is made with the

SYSTEM 1-SPKR-SYSTEM 2 pushswitches on

the front panel.

To connect the speakers to the 2252, useordina-

ry #18 gauge two conductor lamp cord. For dis-

tances longer than 30 feet, use#16 gaugewire or

heavier.

SPEAKER PHASING

To assurethe best stereo separation and frequen-

cy response, the speakers must be properly

phased. The positive terminal on each speaker

should be connected to its respective

(+) terminal

on the Model 2252, and the negative or

"common" terminal should be connected to its

respective (-) terminal. To verify that a pair of

speakers are correctly phased, perform the follow-

ing test:

1. Complete the necessary signal connections so

that program material may be played through

the speakers.

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Marantz Model 2252 Seite 7

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