dual subwoofer wiring
jimmyzen
Posts: 57
I bought a second PSW1000 to add to my stereo audio system that currently consists of a pair of RTi12s and a single PSW1000 sub. The connection method I am using and like the best is the speaker outputs of my amps are wired into the speaker inputs of the sub and the speaker outputs of the sub feed the left and right RTi12s.
To wire a sub into each channel am I correct in assuming I would jumper the left and right speaker inputs together, maintaining polarity, on the sub so that essentially each amp was driving both speaker inputs on that channel's sub? And would the same wiring technique be used on the sub's speaker outputs, jumpering the left and right channels together, again maintaining polarity, to drive the Rti12 for that channel? This is basically paralleling the speaker inputs + to + and - to - with the + & - of the feed from the amp connected accordingly. The speaker outputs would also be + to + and - to - with the speaker's + & - wired to the appropriate polarity terminal.
Or am I totally off base here and need to do something else? I won't have the second sub for a few days and I want to make sure I don't screw anything up when it arrives. Thanks in advance.
As an aside: I'm still fairly new to this site and I have to say the people here are as friendly, helpful, patient, and knowledgeable a group as I have ever encountered. The patience and understanding I have seen (read?) shown to some of the questions posted here has been astonishing and humbling. You are good people as my ilk was once fond of saying in offering the highest possible compliment.
To wire a sub into each channel am I correct in assuming I would jumper the left and right speaker inputs together, maintaining polarity, on the sub so that essentially each amp was driving both speaker inputs on that channel's sub? And would the same wiring technique be used on the sub's speaker outputs, jumpering the left and right channels together, again maintaining polarity, to drive the Rti12 for that channel? This is basically paralleling the speaker inputs + to + and - to - with the + & - of the feed from the amp connected accordingly. The speaker outputs would also be + to + and - to - with the speaker's + & - wired to the appropriate polarity terminal.
Or am I totally off base here and need to do something else? I won't have the second sub for a few days and I want to make sure I don't screw anything up when it arrives. Thanks in advance.
As an aside: I'm still fairly new to this site and I have to say the people here are as friendly, helpful, patient, and knowledgeable a group as I have ever encountered. The patience and understanding I have seen (read?) shown to some of the questions posted here has been astonishing and humbling. You are good people as my ilk was once fond of saying in offering the highest possible compliment.
The Beloved System:
Parasound Halo P3 Preamp
Parasound Halo T3 AM/FM Tuner
Grant Audio Tube Buffer
ADC Sound Shaper II IC Graphic Equalizer
Polk XRT12 XM Satellite Radio Receiver
2 Carver TFM 35x Power Amps
Harmon Kardon T45 Turntable w\ Benz MC 20E Phono Cartridge
Vincent Phono Preamp (not enough gain in the Parasound Phono In)
Cambridge Audio 640C V2 CD Player
Nakamichi BX300 Cassette Deck
Polk RTi 12 Main Speakers
2 Polk PSW 1000 Subwoofers
Parasound Halo P3 Preamp
Parasound Halo T3 AM/FM Tuner
Grant Audio Tube Buffer
ADC Sound Shaper II IC Graphic Equalizer
Polk XRT12 XM Satellite Radio Receiver
2 Carver TFM 35x Power Amps
Harmon Kardon T45 Turntable w\ Benz MC 20E Phono Cartridge
Vincent Phono Preamp (not enough gain in the Parasound Phono In)
Cambridge Audio 640C V2 CD Player
Nakamichi BX300 Cassette Deck
Polk RTi 12 Main Speakers
2 Polk PSW 1000 Subwoofers
Post edited by jimmyzen on
Comments
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Just use one set of inputs on each sub, left for the left sub, right for the right (just to make it easy). Strapping the inputs isn't going to do anything, and you won't be missing a thing.
Cheers,
RussCheck your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service. -
Just use one set of inputs on each sub, left for the left sub, right for the right (just to make it easy). Strapping the inputs isn't going to do anything, and you won't be missing a thing.
Cheers,
Russ
I had a DUH! moment right after I posted this. If I parallel the inputs to the subs I will end up with a 4 ohm load which may create problems. Same if I jumper the pair of outputs.
Here's another thought: The amps I have are rated at 700 watts running bridged or 250 wpc in stereo. I'm currently running them bridged, one per channel. What about this connection scheme: Run Y cables splitting each preamp output into 2 inputs for each amplifier (returned to stereo mode) and then wire each amp's outputs to a sub speaker in just as if it was a standard stereo arrangement. Of course it would be a single mono channel in reality (which is only perception!).Then, I could remove the binding post straps on the Rti 12s and use the left and right speaker outputs of each sub in a faux bi-amp arrangement and all would be OK as far as maintaining an 8 ohm load on each channel all through the system. More wire of course, but I'm more concerned with the electrical integrity of the system.
Thoughts on that please?
BTW: I always thought it wasn't good to run an amplifier without a load attached. True?The Beloved System:
Parasound Halo P3 Preamp
Parasound Halo T3 AM/FM Tuner
Grant Audio Tube Buffer
ADC Sound Shaper II IC Graphic Equalizer
Polk XRT12 XM Satellite Radio Receiver
2 Carver TFM 35x Power Amps
Harmon Kardon T45 Turntable w\ Benz MC 20E Phono Cartridge
Vincent Phono Preamp (not enough gain in the Parasound Phono In)
Cambridge Audio 640C V2 CD Player
Nakamichi BX300 Cassette Deck
Polk RTi 12 Main Speakers
2 Polk PSW 1000 Subwoofers
