question about driving single VC sub.

rakeshln · 21st June 2004, 05:48 PM

Can i drive a single VC sub on stereo? What i know is there is no stereo low down. If yes, how is the impedance and power rating done?

BillFitzmaurice · 21st June 2004, 06:54 PM

Can you drive it with what? Do you mean from a 2 channel stereo amp without a separate amp for the sub? If that's what you mean then yes, you can, but you have to construct a passive crossover to direct the low frequencies to it and away from the main speaker, which will preserve the proper impedance values. There is no true stereo down low from the standpoint of the ability to discerne directionality, but many older recordngs did pan LF information, so if you have the sub on one channel only you won't get any bass in some cases. It's best to have the crossover a LP summing configuration that hooks to both amp channels to get signal from both sides, and once you investigate the price that the necessary components will cost you'll find that you'd be better off to buy a plate sub amp in the first place.

kelticwizard · 22nd June 2004, 01:38 AM

This is the very first post I ever made on diyAudio. It deals with this issue:
How To "Bridge" A Stereo Amp to Just One Channel

21st June 2004, 05:48 PM	#1
rakeshln diyAudio Member Join Date: May 2004 Location: Mumbai	question about driving single VC sub. Can i drive a single VC sub on stereo? What i know is there is no stereo low down. If yes, how is the impedance and power rating done?

22nd June 2004, 01:38 AM	#3
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	This is the very first post I ever made on diyAudio. It deals with this issue: How To "Bridge" A Stereo Amp to Just One Channel __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

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21st June 2004, 06:54 PM	#2
BillFitzmaurice Banned Join Date: May 2004 Location: New Hampshire	Can you drive it with what? Do you mean from a 2 channel stereo amp without a separate amp for the sub? If that's what you mean then yes, you can, but you have to construct a passive crossover to direct the low frequencies to it and away from the main speaker, which will preserve the proper impedance values. There is no true stereo down low from the standpoint of the ability to discerne directionality, but many older recordngs did pan LF information, so if you have the sub on one channel only you won't get any bass in some cases. It's best to have the crossover a LP summing configuration that hooks to both amp channels to get signal from both sides, and once you investigate the price that the necessary components will cost you'll find that you'd be better off to buy a plate sub amp in the first place.

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