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Hooking up sub

Hi, I'd like to hook up a powered sub (Energy ES8) to an older Technics HT receiver. There is no sub output on reciever. I was told not to use the "B" speaker hookup as this could screw up impedence. I was thinking, could I hook up to tape RCA outputs Get an adaptor that merges the L+R into one RCA cable since normal sub output is mono anyway? If not what would be the best way to do this? The sub is powered and has a volume control and a crossover selector knob. By the way will be using 6 speakers, the front and rear L+R, center and the sub, all Energy speakers.

Thanks,
Tom
tommage

Showing 2 responses by reubent

reubent
6,939 posts
 
Tom,

What model is the receiver? If it is an HT receiver which supports mains, surround and center speakers, I'd be surprised that it doesn't have some type of sub output. Are you sure there is not an RCA out for "LFE" (low frequency effects), which is sometimes what the sub out is called on an HT receiver.

Does your receiver support Dolby Digital 5.1 surround sound? If so, it must have a sub out of some kind.

TIC
reubent
6,939 posts
 
Tom,

If you run speaker wire from the receiver to the sub, then run speaker wire from the sub to the front L&R speakers, it won't upset the impedence seen by the receiver. If it is a surround receiver and you will be connecting a center channel and surrounds, you will need to determine how bass management will be performed.

If your receiver allows speaker configuration, you will likely need to set up the front L&R main speakers to "large" because the sub/speaker setup will be receiving the low frequency informatio too. The other speakers will need to be set to small so their low frequency information goes to the sub/front speakers.

TIC
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