is my sub bridged?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=118320
Printed Date: July 14, 2025 at 12:05 PM
Topic: is my sub bridged?
Posted By: def by 20
Subject: is my sub bridged?
Date Posted: December 07, 2009 at 6:09 PM
I bought 2 Type - r 12's (4 ohm)from a guy and he had a wire hooked to the 2 middle terminals and said it made them louder or sound better or something. I've ran them like this for a while and they sound fine but I was wondering if it really does help anything or not and what it's really doing.
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Jensen VM9214 Flip out, JVC 6x9's,Sony 6x9's Pioneer 6x9's, 2 Alpine Type R's in ported box, JL 1000/1 V2 Slash, Sony GTX6040 240 watt amp, Kicker CVR(Black), Alpine 500 (300) watt amp.
Replies:
Posted By: i am an idiot
Date Posted: December 07, 2009 at 7:24 PM
If the speakers are dual voice coil drivers, that is the only safe way to run those speakers on that amp. To answer your question, Amplifier bridging is simply using 2 channels of an amplifier to drive a common load. Your amplifier is a 1 channel amplifier. Your speakers have their voice coils wired in series. Then you have your speakers paralleled at the amplifier.
Posted By: def by 20
Date Posted: December 07, 2009 at 8:50 PM
They're wired parallel, each sub has a positive and negative going to the amp. There is just a wire going from the spare pos. terminal to the spare negative terminal on the same sub.
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Jensen VM9214 Flip out, JVC 6x9's,Sony 6x9's Pioneer 6x9's, 2 Alpine Type R's in ported box, JL 1000/1 V2 Slash, Sony GTX6040 240 watt amp, Kicker CVR(Black), Alpine 500 (300) watt amp.
Posted By: i am an idiot
Date Posted: December 07, 2009 at 9:10 PM
That means that the voice coils are wired in series. Then the speakers are paralleled at the amp.
Posted By: def by 20
Date Posted: December 08, 2009 at 6:11 PM
Oh, somehow I didn't get that from your 1st post. So it is dangerous to run them without the wire.
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Jensen VM9214 Flip out, JVC 6x9's,Sony 6x9's Pioneer 6x9's, 2 Alpine Type R's in ported box, JL 1000/1 V2 Slash, Sony GTX6040 240 watt amp, Kicker CVR(Black), Alpine 500 (300) watt amp.
Posted By: i am an idiot
Date Posted: December 08, 2009 at 6:18 PM
Without the wire, they will not play.
Posted By: icearrow6
Date Posted: December 10, 2009 at 1:59 PM
subs are not bridgeable. . . amps however CAN be bridged.
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Posted By: def by 20
Date Posted: December 10, 2009 at 8:29 PM
Yeah I knew amps could be bridged but I didn't know how else to explain my subs.
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Jensen VM9214 Flip out, JVC 6x9's,Sony 6x9's Pioneer 6x9's, 2 Alpine Type R's in ported box, JL 1000/1 V2 Slash, Sony GTX6040 240 watt amp, Kicker CVR(Black), Alpine 500 (300) watt amp.
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