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Old 27th January 2010, 01:13 AM   #1
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Default harman kardon hk980

i have owned this amp for around 3 months, but im having a problem with DC offset. the service manual suggests between 11 and 12 VDC, however when i bought the amp, both channels were between 47v and 53v? i have managed to adjust to around 11-12, but i keep having to adjust? and i have allowed for temp etc. was thinking is it better for me to replace the cheap adjusting pots with some better ones?
i ask because they are the open type ones, so eventually dust etc will affect them.
what brand/type of pots would you suggest

p.s. i have the service manual, its too big to post here but pm or leave your email and i can send it

thanks
jim
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Old 27th January 2010, 02:00 AM   #2
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Quote:
Originally Posted by jimmytwos View Post
i have owned this amp for around 3 months, but im having a problem with DC offset. the service manual suggests between 11 and 12 VDC, however when i bought the amp, both channels were between 47v and 53v? i have managed to adjust to around 11-12, but i keep having to adjust? and i have allowed for temp etc. was thinking is it better for me to replace the cheap adjusting pots with some better ones?
i ask because they are the open type ones, so eventually dust etc will affect them.
what brand/type of pots would you suggest

p.s. i have the service manual, its too big to post here but pm or leave your email and i can send it

thanks
jim
The service manual suggests between 11 and 12 VDC offset? I think you mean millivolts right.
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Old 27th January 2010, 02:08 AM   #3
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hi yes, millivolts
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Old 21st April 2010, 01:01 AM   #4
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all sorted
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