Hi All:
I have a pair of Klipsch KSP-400 tower speakers, which has a build-in 15" subwoofer on each speakers. http://images.klipsch.com/KSP400C6S6...5637990000.pdf
I love this speaker pair in my home theater as they sound extremely good, very easy to drive and the subs are very well integrated with the mid and high. However, in the last few months, one of the sub started to make a loud buzz/hum sound when first turn on (wake-up from auto standby); the buzz sound is very loud for the first minute or so then getting softer and softer then completely gone in about 5 minutes. After that, the sub is working perfectly fine, until it goes to sleep (standby) then wake up again! My questions:
1) is there any quick and easy fix to the amp? or what is the problem?
2) if I leave the amp on all the time, not in auto standby, then I don't have this problem. I have let it on for most of a day and the heat sink behind the speaker is not much warmer than the one on standby. However, I'm very worry about the heat and fire hazard, if I leave the amp on all the time. What do you think?
I did some search, a few folks had replace the amp on this speaker with an external amp and the speaker is still working fine, but I don't want to do so as that would add another equipment to my space-limited rack, also modify to the speakers and cost.
Thank you for any suggestion.
BT