Akai AM-57

Operation details
SPEAKERS
DIRECT OPERATION
` DIGITAL INTEGRATED AMPLIFIER AM-67
DIRECT OPERATION switch
The DIRECT OPERATION switch is used to help improve
sound quality by selecting the shortest circuit route through the
amplifier that the playback signal has to travel.
When set to SOURCE:
The subsonic filter, tone control circuit and balance control cir-
cuits are by-passed.
When set to OFF (SUBSONIC):
The playback signal is routed through the subsonic filter, tone
control circuit and balance control circuits.
During record playback this position can be used to reduce ultra
low frequency noise, rumble, hum etc. (indicated by woofer vi-
bration during playback).
Note:
e The subsonic filter removes low frequency signals (18Hz or
lower) that are present in the playback signals.
Treble and bass tone adjustment
| Set the DIRECT OPERATION switch to OFF (SUB-
SONIC).
2 Use the BASS and TREBLE controls as follows:
Bass adjustment
To increase the level:
Turn the BASS control toward + 10.
To decrease the level:
Turn the BASS control toward - 10.
To defeat the control:
Set the control to 0.
MUTING
BALANCE
Treble adjustment
To increase the level:
Turn the TREBLE control toward + 10.
To decrease the level:
Turn the TREBLE control toward - 10.
To defeat the control:
Set the control to 0.
Left/right channel volume balance ad-
justment
Set the DIRECT OPERATION switch to OFF (SUB-
SONIC).
9 Use the BALANCE control as follows:
To decrease the right channel volume:
Turn the BALANCE control to the LEFT.
To increase the left channel volume:
Turn the BALANCE control to the RIGHT...