Macrom 45.40 User Manual

Page 7

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CONTROLS AND INDICATORS

1 • FRONT/SUB INPUT CONNECTORS: Connect the pre-output leads of the head unit to the
input connectors of the amplifier. This input will drive the end section of both the FRONT
section and the SUB one.

2 • REAR INPUT CONNECTORS: Connect the pre-output leads of the head unit to the input
connectors of the amplifier. This input will drive the end section of the REAR section.

3 • 4CH/2CH INPUT MODE SELECTOR:It allows to select the amplifier’s input configuration
as follows:
a) “4ch” - the operation of the five channels depends upon the connection

of the four input channels

b) “2ch” - utilize the FRONT/SUB inputs to drive the five channels by

means of two inputs only.

4 • FRONT CROSSOVER SELECTOR: Il allows to select the FRONT amplifier’s operation
mode:
a) “FLAT”: the FRONT amplifier reproduces the whole audio range on

grounds of the signal present at its input;

b) “63 Hz”: the High-Pass crossover is activated at 63 Hz to determine the

starting value of the high frequencies present at FRONT outputs;

c) “80 Hz”: the High-Pass crossover is activated at 80 Hz to determine

the starting value of the high frequencies present at FRONT outputs.

5 • FRONT INPUT GAIN ADJUSTMENT CONTROL: It allows to adjust input sensitivity to the
FRONT section from 200 mV to 4 V.

6 • REAR CROSSOVER SELECTOR: It allows to select the REAR amplifier’s operation
mode:
a) “FLAT”: the REAR amplifier reproduces the whole audio range on

grounds of the signal present at its input;

b) “63 Hz”: the High-Pass crossover is activated at 63 Hz to determine the

starting value of the high frequencies present at REAR outputs;

c) “80 Hz”: the High-Pass crossover is activated at 80 Hz to determine

the starting value of the high frequencies present at REAR outputs.

7 • REAR INPUT GAIN ADJUSTMENT CONTROL: It allows to adjust input sensitivity to the
REAR section from 200 mV to 4 V.

8 • SUB CROSSOVER SELECTOR: It allows to select the crossover frequency of the SUB
amplifier:
a) “50 Hz”: the Low-Pass crossover is activated at 50 Hz to determine the

end point of the low frequencies present at SUB output;

b) “80 Hz”: the Low-Pass crossover is activated at 80 Hz to determine the

end point of the low frequencies present at SUB output;

c) “120 Hz”: the Low-Pass crossover is activated at 120 Hz to determine

the end point of the low frequencies present at SUB output.

9 • SUB INPUT GAIN ADJUSTMENT CONTROL:
It allows to adjust input sensitivity to the Sub section from 200 mV to 4 V.

2 Ch 4Ch

Mode

Flat 63 80Hz

50 80 120Hz

O/M 45.40 (5T) 25/06/02 19:25 Page 7

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