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Transformer voltages (secondary) of Stax SRM-323A

post #1 of 6
5/21/09 at 8:18am
Thread Starter 
I have a defective SRM-323A. The transformer is defective. Can anyone measure the voltages at the secondary side of the transformer? I want to order a custom transformer for replacement and need the exact voltages.
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post #2 of 6
5/21/09 at 3:51pm
I have a 313 I could check, but I am uncertain if they contain the same power supply.
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post #3 of 6
5/22/09 at 4:54am
Thread Starter 
I don't know if it would help. The problem is the BIAS. It is unregulated and wouldn't have the correct value if the voltage is too high or too low.
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post #4 of 6
8/5/09 at 4:55pm
Thread Starter 
In the meantime I could repair the amp. I ordered a transformer with 2x240V and 1x9V for the LED.

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post #5 of 6
8/21/10 at 6:14am

My SRM-323A have strange voltages on transformer secondary: orange - 270V, red - 290V, blue - 6V. I think voltages on orange and red wires must be equal?

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post #6 of 6
8/21/10 at 6:30am

A number of different stax models over the years have a higher negative voltage than the corresponding positive voltage.

Measured at the capacitors the positive voltage should be around 375, and the negative voltage around 400.

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