Front Panel Controls And Features; Block Diagram - Toa A-503A Operating Instructions Manual

TOA 500 SERIES

Front Panel Controls and Features

No.
1
Power on-off switch
2 Power indicator
3 Input 1 - 5 volume controls
4 Bass control
5 Treble control
6 Master volume control

Block Diagram

Name
Applies line power. Two position button switch for on-off modes.
Comes on when power is turned on.
Adjusts gain of Input 1-5 respectively.
Adjusts bass response.
Turn clockwise (CW) to boost and counterclockwise (CCW) to attenuate
the bass response. Tone is flat at center.
Adjusts treble response.
Turn clockwise (CW) to boost and counterclockwise (CCW) to attenuate
the treble response. Tone is flat at center.
Adjusts overall gain of unit.
Function/Description
A-503A, A-506A, A-512A
BLOCK DIAGRAM