Page 2 - Front Panel Controls and Features Rear
Ite m 1 2 3 Nam e POWER ON-OFFSWITCH METER INPUT VOLUME CONTROL Function/Description Applies line power. Two-positionpushbutton switch for on-off modes. Indicates the output level of the a m p l i f i e r . A t rated output, it shows 0 V U (at continuous sine-wave signal input). When power is turned...
Page 3 - Input Connections
Plug-in Modules and Input Level SW Setting Plug-in Modules Balanced low impedance microphone preamp. module(with presettable low-cut filter, high-cut filter and gain c o n t r o l s ) Balanced low impedance microphone preamp. module (with pressetable low-cut f i l t e r , high-cut filter and gain co...
Page 4 - Installation
Note: When the temperature of heat s i n k exceeds 105°C, the protectionc i r c u i t is activated and the output is disconnected from the c i r c u i t . The signal a u t o m a t i c a l l y begins to be output as the temperature goes down. In such a case, confirm whether or notunit is overloaded o...
Page 5 - Unpacking; Operation
When a l l connections are completed, turn power switch on. T h e n , the meter is illuminated. A p p r o x . 5 seconds a f t e r s w i t c h i n g power on, the amplifier comes into operation. ADJUSTMENT OF V O L U M E C O N T R O L Adjust the input volume c o n t r o l to obtain appropriate output...
Page 7 - Specifications
Type Output Power Power Band Width Frequency Response Total Harmonic Distortion Inputs Input Sensitivity/Impedance Outputs (D) - Direct(T) - Transformer Output Regulation (1 kHz) Signal to Noise Ratio Controls Indicator Protection Connectors Power Consumption Temperature Range Dimensions in mm (inch...
Page 8 - Plug-in Modules and Accessories
( O P T I O N ) The TOA P L U G - I N M O D U L E S are s u i t a b l e f o r T O A 900 S E R I E S M I X E R P O W E R A M P L I F I E R S A - 9 0 1 A , A - 9 0 3 A , A - 9 0 6 A , and A-912A M I X E R P R E A M P L I F I E R M-900A, and P O W E R A M P L I - F I E R S P-906A, P-912A and P-924. O w...
Page 11 - Operation and Connections
• E-11, X - 1 1 , L-11, B-11 Series, H-31 and H-32 (with mute) Connections (M-900A, A-903A, A-906A, A-912A) Mute Terminal Operation When the switch is closed,,a. the signal fed to E-11, X - 1 1 , L-11 and B-11 are attenuated by approx. 60dB. Accordingly a microphone can have a priority at a time of ...