Solution required for imbalance in left and right channels of HK6500

[Shailesh Dhodia]

Hi,
I recently noticed two problems with regards to my amp HK6500-speaker combo.

1. Channel imbalance: Right speaker is louder than the left speaker. The imbalance remains consistent with increase or decrease in the volume. I tried listen to two different sets of speakers a)Dayton b652 and b) Pyle Home PCB3BK 3-Inch 100-Watt Mini Cube Bookshelf Speakers and the result was consistent

2. Heating up of Left Pyle speaker: I noticed that left speaker, Pyle had gotten heated up and I could smell plastic burning (the body is made of plastic). In case of Dayton b652 there was a sound of kar..kar.. after some time in the left channel.

Having noticed the problem, I have refrained myself from using the amplifier. Can you please suggest what could be the potential problem and the solution? Hope the solution suggested will not affect the sonics.

 

[kanwar]

Could be a case of DC offset, check the DC voltage at left side speaker output of the amplifier using a digital multimeter.

 

[Shailesh Dhodia]

Hi Kanwarji,

I will perform the check and let you know if there is any offset. Assuming that there is a dc offset, would it imply a major glitch? or what could be the probable problem?

 

[tanmayj]

Check the cables for shorts or other issues...