Ouput DC

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Hi

I have finished one of my Aleph2 Mono. However, I got a 60 mv DC at the speaker jack without signal connected. Is it troubled or can be used. I also checked the service manual of Aleph 2, the specification of DC offset mentioned <100mv. I don't quite understand the same things or not.

After 90 mins, I measured a 55° C (heat sink) under room temperature 25° C. The basis was adjusted 0.55A per Mosfet.

Please advise.

:devilr:
 
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lawka said:
Hi

I have finished one of my Aleph2 Mono. However, I got a 60 mv DC at the speaker jack without signal connected. Is it troubled or can be used. I also checked the service manual of Aleph 2, the specification of DC offset mentioned <100mv. I don't quite understand the same things or not.

After 90 mins, I measured a 55° C (heat sink) under room temperature 25° C. The basis was adjusted 0.55A per Mosfet.

Please advise.

:devilr:

60 mV should be fine. This is the DC offset mentioned in the
service manual.

Just curious, did you measure this amount when the amp
was hot or cold?

I hear it's starting to get hot in HK. I guess you'll have to
aircondition to keep the room at 25C... :)

Cheers,
Dennis
 
Thomas

I bought the chassis from Tai Wan with 4 sides heat sink.

Further, I will keep trying to well match the Q1 & Q2 and lowering the bias to maintian the safety temprature <50°C (I guess <0.5A per mosfet).

Could anyone reveal the performance of using the CLC filter or CRC filter.

Thank you
 
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