XPA-1 Gen 2 Buzzing / Hum thro speakers on start up

[sse1505]

Hi, I was wondering whether anyone else had this problem. One of my XPA -1 Gen 2 units causes a buzzing /hum sound from the speaker for about 3 -7 minutes after starting up. It only occurs after a cold start after several hours of being turned off and therefore was difficult to trouble shoot. I have ruled out the cables, power outlet and pre-amp as it does not occur with the other unit when the same cables, outlets etc were used with the non-problematic unit. This seems similar to the problem reported with the XPA-1L in this forum. 

emotivalounge.proboards.com/thread/34259/xpa-1l-buzzing-on-start.

I really like the amplifiers as they sound great and hope that it is a simple fix by changing resistors as noted in the above forum.

Thanks

[Andrew Robinson]

Jan 2, 2014 19:10:09 GMT -5 sse1505 said:

Hi, I was wondering whether anyone else had this problem. One of my XPA -1 Gen 2 units causes a buzzing /hum sound from the speaker for about 3 -7 minutes after starting up. It only occurs after a cold start after several hours of being turned off and therefore was difficult to trouble shoot. I have ruled out the cables, power outlet and pre-amp as it does not occur with the other unit when the same cables, outlets etc were used with the non-problematic unit. This seems similar to the problem reported with the XPA-1L in this forum. 

emotivalounge.proboards.com/thread/34259/xpa-1l-buzzing-on-start.

I really like the amplifiers as they sound great and hope that it is a simple fix by changing resistors as noted in the above forum.

Thanks

Please call our offices at 877.366.8324 in the morning and ask to speak with technical support. I'm sure they'll better be able to help you with your issue. 

[sse1505]

Hi Andrew

Thanks for the prompt reply. I did get to talk to them and they said it had to be sent back to evaluate the problem. I was just wondering whether anyone else experienced this as it seems to have happened with a few XPA-1Ls

Thanks