20 Most Recent KLH HT-9900 System Questions & Answers


There should be a subwoofer output on your receiver that it connects to. It'll be labeled "Subwoofer" and its typically a purple connection.

KLH HT-9900... | Answered on Mar 14, 2011


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....

KLH HT-9900... | Answered on Jan 10, 2008


disconnect offending unit. then play see if same response occurs on the alleged normal unit using the offending cable interchange cables see if you get same result. Means it's bench repair ,internal electronics require specialist equipment to locate the offending item.

KLH Audio... | Answered on Oct 31, 2018


You could check it by having the unit switched on a touching each of the pins of the device with an insulated tool. Making certain you don't short any of the pins together. You should hear a buzz on each channel. If you get nothing on the right then it could well have gone.
However that is a lot of messing about, as the device can be purchased for around £12, it could be easier just to replace it and see if that cures it. After all it is the device that does most of the work, so the chances are it's gone!

KLH Audio... | Answered on Oct 01, 2018


If you can post a picture of the fuse it might help in tracking one down.
However I should point out that fuses rarely blow on their own. And one blown is a sign of a serious overload, probably in the main amp or power supply section.

KLH Audio... | Answered on Jul 09, 2018

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