The subwoofer for my KLH DOLBY DIGITAL surround sound receiver R5100 has no sound. The green light on the back of the subwoofer lights up and the subwoofer volume on the receiver is turned up yet there is no sound.....,..what is the problem????

this unit has a sub output on the back to connect to a powered sub, or an amp/reciever and passive sub

Call Apple and talk to setup technician.

HI,
Check the following link you will get the answer why There is no manual avilable for KLHr5100. Still i dont have the manual for this one.
http://www.epinions.com/review/pr-KLH_R5100_5_1_Dolby_Digital_DTS_Channel_Home_Audio_Receiver/content_554691628676

Ajin

How do you switch from one to the other?Do you have both Land R in the correct "aud in " slots,from each component.?

Well to get the full effect of 5.1 surround you will need 2 front speakers, 1 subwoofer, and 2 rear speakers. Personally I used 2 tower speakers, 2 rear speakers and a subwoofer. Match the speakers with the RMS wattage of your Receiver. (100x5) or roughly 50 watts per speaker. Yamaha, KLH, Philips are pretty good speakers.

The light is supposed to work in reverse to the system; i.e. light off= system on; light on= system off...

use component audio to the HDTV and optical audio to your KLH reciever. The component and optical are always active at the same time. I work for TWC if you have more questions.

in stero mold only 4 speeker will work ftr ftl center sub u need a sound sliter cornet it to the tow frount that what i did

For Stereo Mode (Front L & R Speaker), you must plug RCA cables (match up red and white) from Output on DVD player to DVD Input on the back of the receiver. Then with speaker wire, run from receiver speaker output (Front Speakers) to designated speaker (make sure + and - match up to both input and output). As for hooking up surround sound, I'm currently trying to figure that one out with just using the L, R and Center. I don' t want wire running all over the place just for rears. Hope this helps