I've had my KLH receiver for probably near 8 years now, maybe a little less. Recently it's having a problem where after playing for awhile it will send out a loud pop through my speakers and turn off. It seems to be random, not after a certain amount of time because it happened 3 times in one day in a period of a couple hours but then I listened to it all day for probably 5 hours plus with no problems.
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Re: KLH Receiver Shorting Out
See if you can spot a pattern to the failures. I suspect that it is heat related. In the time that the unit ran all day, I suspect that the volume level was lower. Am I correct? If so, then either there are poor solder connections which are being effected by heat or there is a part that is defective. Are there any other symptoms or does the unit just shut off? If you attempt to turn it on, will it play for a while? If you can solder, look for solder connections that look grainy or have rings and resolder them.
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Yes, probably, if you aren't capable of repair yourself. However, IMHO, a replacement will probably cost less in the long run. I have a KLH passive subwoofer myself. I wouldn't pay for any repair if it failed. Replacements are far too inexpensive.
Probably a shorted amp. Turn it on with no speakers hooked up, if it still says check speakers,it will need service (output transistors and a couple of resistors) A few times I've seen them only need soldering of an emmittor resistor.
It is not a fuse problem, when a fuse is gone does not start at all. It is probably the final amp circuit, there is a faulty IC in there that overheats after few seconds and the unit goes off by itself.
The 'Subwoofer' output on your receiver is used to connect to a powered subwoofer with a built in amplifier. Your KLH speakers use what is called a 'passive' subwoofer, it gets its power from the receiver and then passes the higher frequencies to the left and right front speakers after taking out the low frequencies for the subwoofer. A speaker system with a passive subwoofer is good for casual listening, but a powered subwoofer is required for really hearing low frequencies and rumble in movies. The KLH speakers you have were highly rated in their time for their price. The four satellite speakers and center channel speaker have very good sound compared to the little 'midget' surround sound speakers most people buy today.
Here's how you hook them up:
- The left and right front channels from your receiver terminals should go to the terminals on the subwoofer marked 'From Amplifier'
- Your left and right front speakers are then connected to the subwoofer terminals marked 'To Speakers', they do not connect directly to your receiver.
- Your center speaker is connected to your receiver terminals marked 'Center'
- Your rear speakers are connected to your receiver terminals marked 'Surround'
That should get you up and running. If the bass isn't good enough with the passive subwoofer, you can get a decent powered subwoofer like the Velodyne VX-10 for about $150 and 'kick it up a notch'. Good luck and enjoy....