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Dual Sub-woofers paired into two sets of speakers - connection option.

I have 2 sets of speakers connected to my power amp A and B speaker outputs.

I also have two SVS SB1000 pro sub woofers hooked up to my pre-amp mono sub out with a RCA Y-splitter.

The subs have speaker level left and right input.

I would like to hear the supposed advantages of stereo subs.

Would it be feasible instead of using the mono sub out to connect from each speaker to one of the sub speaker level in inputs? Speaker A would go to sub speaker level Right input, Speaker B would go to sub speaker level Left input.

This way I can still switch listening from Speaker A or B and still have subs.

Would I run into any problems if I had both speakers A and B active at the same time? (I'm inclined to think its OK as the sub speaker level Left and Right are designed to both take a signal at the same time if hooked up to just one set of speakers).

I'm thinking I'm OK but I'm always overly cautious when wiring up something that is unusual.

Thanks in advance to those more experienced than I.

Rob

128x128tunehead
tunehead's avatar
tunehead OP
170 posts
 

@loomisjohnson 

Thank you for your response,

My power amp is a Parasound 2350 class D, 600 watts x2,

  • 350 watts x 2 @ 8 Ω
  • 600 watts x 2 @ 4 Ω or 2 Ω

Minimum Speaker Impedance (Output A+B)

  • Stereo or Mono Mode: 2 Ω 

I like to experiment, but am very cautious. I was of the understanding that connecting a sub up to the speaker level input from the main speaker yields a more coherent signal being the exact same signal that the speaker see's but presents virtually no extra load, the sub still does the power amplification and cross over processing. Am I correct on that? Think I'll try with just one speaker set and let my ears inform me.

gdaddy1
145 posts
 

@tunehead   Correct in your thinking. High level connection will pass along the sound charateristic of your amp. Punchy amp = punchy sub.

It uses a small signal and uses no extra load. Highly recomended for stereo set up.

loomisjohnson
1,956 posts
 

your parasound is a high-current amp designed to go down to 2oHm, so unless your speakers are ridiculously demanding i wouldn't expect it would have trouble driving both sets of speakers. i also see no problem with connecting one or both subs via the speaker level input on your amp. that said, i'm not sure whether you'd achieve better sonic results with two sets of speakers and/or whether your two subs would sound better via speaker level connection vs. your current lfe connection--i suspect it's system-dependent. rel subs, for one, tend to sound better with speaker-level connection; others may not.

erik_squires
16,295 posts
 

Let me see if I understand this. Sub 1 (S1) will have A left and B left connected as inputs, Sub 2 (S2) will have A right and B right connected.

In each case you will keep the A and B wires separated and they will go to the sub’s L or R inputs?

What you shouldn’t do is connect L A and L B through S1-Left input. That would not break anything but you would lose your A or B switching capabilities. :)

The remaining thing which might cause an issue is if your amp was bridged.  That is, if both (+) and (-) were driven, which sometimes causes problems with subs that ground the (-) inputs.

 

tony1954's avatar
tony1954
1,097 posts
 

Why are you asking the people on this forum?

Why not talk to the people at SVS? Here you will get educated guesses. The manufacturer will give you answers.

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