&

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FILTER

 

 

CONTROL

B

 

 

 

 

 

 

FREQUENCY

 

 

 

 

 

 

A

 

 

 

 

INPUT SENSITIVITY(V)

 

 

 

 

 

B.M.S. 80

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

FREQ(Hz)

 

 

3

1

 

 

 

 

 

 

(REMOTE)

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

OPEN/

B.M.S.

 

 

0.5

 

 

 

 

 

 

 

 

50

 

200

50

200

CLOSE

50

100

 

5

0.2

FREQ (Hz)

LO PASS

 

HI PASS

 

 

 

 

 

(MIN)(MAX)

 

 

 

 

 

 

 

B.M.S.

HPF

LPF

 

 

OFF 25Hz

 

B

 

 

 

STEREO MONO

 

 

 

 

 

 

 

(+6)

OFF

 

 

15Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATION

B.M.S.

FILTER

 

INFRASONIC

 

 

 

 

 

 

 

 

 

 

 

50

200

50

 

200

 

 

 

 

 

 

 

 

LO PASS

 

HI PASS

 

 

^

@INPUT SELECTOR switch

This switch selects the input method of the signals to be amplified by amplifiers A and B.

•A B position:

Amplifies both of the signals input to amplifiers A and B.

•A position:

Amplifies only signal input amplifier A with both amplifiers A and B.

#INPUT SENSITIVITY control

Adjust this control according to the pre-out level of the centre unit connected to this amplifier.

The sensitivities of amplifiers A and B can be adjusted independently regardless of the position of the input selector switch.

NOTE

Refer to “Specifications” on the centre unit’s instruction manual about the pre-out level.

$OPERATION switch

The amplification methods of the signals input to amplifiers A and B can be selected independently according to the setting of this switch.

•STEREO position:

The amplifier can be used as a stereo amplifier.

•MONO (Lch) position:

Amplifies the signal input from the left side only. Set to this position and make bridged connections to use as a high-power monaural amplifier. (The input right signal is not output.)

COOLING FAN

AIR

INDUCTION

OPERATION/PROTECTION

4/3/2 CHANNEL POWER AMPLIFIER

POWER

OPEN/CLOSE

LOW VOLTAGE

B.M.S.

%FILTER switch

This switch allows to apply high-pass or low-pass filtering to the speaker outputs.

•HPF (High-Pass Filter) position:

The filter outputs the band of higher frequencies than the frequency set with the HPF FREQUENCY control.

•OFF position:

The entire bandwidth is output without filtering.

•LPF (Low-Pass Filter) position:

The filter outputs the band of lower frequencies than the frequency set with the LPF FREQUENCY control.

The speaker output is automatically turned monaural (L+R) and the bass boost function is activated.

^HPF FREQUENCY control

Sets the cutoff frequency when the FILTER switch is set to HPF.

&LPF FREQUENCY control

Sets the cutoff frequency when the FILTER switch is set to LPF.

*INFRASONIC FILTER switch

When this switch is set to 15 Hz or 25 Hz, frequencies below the setting value will be cut. This serves to get rid of unwanted vibrations that do not result in sound and improves the speakers’ ability to reproduce sound. Note that the speaker output will automatically be set for monaural (L+R) sound.

English 5