TOA Electronics 1000 Series Optional Matching Transformer Mounting, Transformer Specifications

Optional Matching Transformer Mounting

[CAUTION]

THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN

THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE

QUALIFIED TO DO SO. REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL.

The E-1231's input and output are electronically balanced. These can be converted to transformer balanced input and output using the optional matching transformer LT-101 (input) and LT-102 (output).

1.Set the power switch to OFF and unplug the AC cord form a wall outlet.

2.Remove the case by loosening six side panel screws (three each on each side) and two rear panel screws.

3.Install sleeves (supplied with the transformer) by tightening screws from the other side of a chassis, and mount the transformer to the sleeves using screws. See Fig. 1.The input transformer must be located on the left and the output transformer on the right.

4. When mounting the input transformer, detach			connector from CN-104, reconnect
the detached connector to connector at the transformer side, and then connect
connector from the transformer to CN104.				connector from CN-103,
When mounting the output transformer,			detach
reconnect the detached connector to		connector at the transformer side, and then
connect	connector from the transformer to CN103.
See Fig.1.

		Fig.1
5. Fit the case in place.
Transformer Specifications
Model	LT-101	LT-102
Frequency response	30Hz ~ 20kHz	30Hz ~ 20kHz
	(at ±0.15dB)	(at ±0.15dB)
Constant loss	Within 1.5dB(at 1kHz)	Within 1.5dB(at 1kHz)
Distortion	Less than 0.2%(50Hz/5dB)	Less than 0.2%(50Hz/5dB)

0dB = 0.775V RMS

Specifications are subject to change without notice.

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