Bedienungsanleitung Marantz Model 2230 (Seite 16 von 19) (Englisch)

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TAPE SIGNALS

With the exception of tape input, all high-level

inputs are fed directly to the selector switch. Tape

input is routed through the front panel dubbing IN

jack to a section of the TAPE MONITOR switch.

The dubbing IN jack is a three-conductor stereo

jack which has two built-in switches, one for each

channel. Normally, these switches are closed,

allowing the tape input signals from the TAPE IN

jack on the rear panel to be fed to the TAPE

MONITOR switch. When a plug is inserted in the

dubbing IN jack, the switches are opened,

disconnecting the TAPE IN jacks and allowing the

signal from the dubbing IN jack to reach the TAPE

MONITOR switch. Thus only one tape recorder at

a time can feed playback signals into the Model

2230.

TAPE MONITOR SWITCH

When the TAPE MONITOR pushswitch is in the

"out" position tape input signals from the TAPE

IN jacks on the rear panel or dubbing IN jack on

the front panel are fed to the selector switch. When

the TAPE MONITOR is depressed, the output of

the selector switch is disconnected from the

balance control and the tape input signals from the

TAPE IN or dubbing IN jacks feed the balance

control directly.

PHONO SIGNALS

Phono siqnals of up to 100 millivolts can be

handled without overloading. The RIAA equal-

ization network provides precise equalization and

sets the voltage gain of the phono preamplifier to

40dB (at 1,000Hzl.

MONO FUNCTIONS

When the MONO pushswitch is in the "in"

position, the two channels are connected together

through mixing resistors. In addition, the left and

right channel tape input signals are connected to-

gether through a similar resistor network. This

facility allows all inputs to be converted to the

monophonic mode.

CONTROL CI RCUITS

The control circuits portion of the Model 2230

consists of the balance, volume, bass, mid, treble,

Hi FIL TER;and LOW FILTER controls. All

controls affect the left and right channels

simultaneously.

With the controls set for flat response and volume

control at maximum, the over-all voltage gain from

any high-level input to the loudspeaker terminals is

approximately 38dB.

BALANCE CONTROL

The balance control is a wide-range control which

permits attenuation of each channel to cutoff. The

change of attenuation in each channel as the

control is turned away from center has been

designed to maintain total apparent loudness from

both channels. This feature makes it a true stereo

balance control.

VOLUME CONTROL

The volume control attenuates both channels

simultaneously Clnd maintains tracking to within

3dB at any point of attenuation to -SOdB from

maximum. Since the control is situated at the

input of the tone amplifier, there is no possibil ity

of overloading the amplifier stages under maximum

rated output conditions. Thus, distortion is kept to

a minimum. After attenuation by the balance and

volume ·controls, the signal is applied to the tone

amplifier.

TONE AMPLIFIER

The TONE AMPLIFIER's circuitry uses a con-

tinuously variable R-C feedback-type configura-

tion.

The signal from the TONE AMPLIFIER feeds the

hi/low filter circuit when the Hi FILTER or the

LOW FI LTER pushswitch is depressed.

Hi·LOW FILTERS

The Hi-Low filters provide 6 dB or fall off per oc-

tave.

GENERAL

Power Requirements '" 120 V AC 50 to 60 Hz

At rated output,

both channels operating 220 Watts

Idling Power (Volume Control at zero) 48 Watts

Dimensions

Panel Width 17

21164 Inches

Panel Height 5 25/64 Inches

Depth 14 Inches

Weight

Unit alone 28.6Ibs

Packed for shipment 38.6Ibs

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Marantz Model 2230 Seite 16

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