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Subwoofer connection to older tube amp

I need to connect my Dominator 8 Sub to an Audio Research D-90 Amp and SP-12 Pre. The amp outputs only allow left and right bare wire speaker connections for different ohm ratings and I'll use the 8 ohm for main speakers.

Like most subs I'm afforded 2 pair of Left & Right Speaker Level inputs and 1 pair L&R Line(RCA plug) inputs and 1 pair L&R Line outputs.

Where would I hook the L/R from the amp to the sub? I want to use the set-up mostly for music but also for movies/DVD's.
jamesk58
jamesk58 OP
73 posts
 
So just connect the sub wires to the same amp terminals as the main speaker wires?
pawlowski6132
592 posts
 
Yup. That's it.
swampwalker's avatar
swampwalker
5,138 posts
 
Unless you have an extra set of line-outs from your pre-amp. Then you can run RCA or XLR cables from the extra main/line outs from the pre to the line in on the sub.
jamesk58 OP
73 posts
 
Thanks guys. Didn't think I could double the speaker wires on the same inputs but makes sense now. Appreciate your help.
steuspeed's avatar
steuspeed
501 posts
 
Use the sub amp and save the power from your tube amp for speakers only. Your tube amp might not like the load if you hook up speaker wires to speakers and sub. You can run line level to the sub and then line level out of the sub to your amps.

The other way to do it would be to use a Y spliter cable coming out of your pre-amp. Run line level to the sub and another to the D-90 amp. you can also buy rca splitters that are machined out of a block. Audioquest makes one.

http://www.nextag.com/AudioQuest-M22FHRD-One-Piece-79384484/prices-html
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