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Top 2GNT Technical Interior/Exterior Audio, Alarms, AV topic #7296
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Subject: "bridging your amp?" Previous topic | Next topic
orzechOct-07-03 02:52 PM
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#7296, "bridging your amp?"


          

How much does this effect your subs/amp.....

effect the life of the subs? die quicker?
how much louder/more bass will ther be?

I have a rockford 851 s 2 channel amp and 2 12'' rockford hx-2 subs. amp is rated at 850 RMS and subs are 500 RMS.

What are your thoughts? Thanks



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95 tsi awd 5 speed-2gb 6 bolt dsmlink
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Replies to this topic
RE: bridging your amp?, rgirard413, Oct-07-03 04:24 PM, #1
RE: bridging your amp?, Teameclipse804, Oct-07-03 05:17 PM, #2
RE: bridging your amp?, mitsuman297, Oct-07-03 05:19 PM, #3
      RE: bridging your amp?, pea_jay, Oct-07-03 06:13 PM, #4
           RE: bridging your amp?, mitsuman297, Oct-07-03 07:58 PM, #5
                RE: bridging your amp?, orzech, Oct-09-03 04:52 PM, #6

rgirard413Oct-07-03 04:24 PM
Member since Jun 27th 2002
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#7297, "RE: bridging your amp?"
In response to Reply # 0


          

Bridging allows the car amplifier to drive one speaker with more power than the amp could produce for two speakers. Because of this high power output, bridging is the best way to drive a single subwoofer.
Also, keep in mind that most car amplifiers need to see a 4-ohm load when bridged to mono operation. If you want to bridge your amp, you should use one 4-ohm speaker or, if you prefer multiple woofers, wire two 8-ohm speakers in parallel.

  

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Teameclipse804Oct-07-03 05:17 PM
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#7298, "RE: bridging your amp?"
In response to Reply # 1
Oct-07-03 05:18 PM by eclipse804



          

Yeah if you want to run two subs in parallel and each sub is 4 ohms, you should find an amp that is 1 ohm stable when bridged. The RF amps are not 1 ohm stable from what I've heard, and heat up easier than other amps. I've been told it's better not to bridge RF amps.

Oh and in comparison of sound. Technically bridged it should have more power to the subs. I had two 8-ohm RF subs bridged in parallel, and then switched to two 4-ohm Pioneer subs bridged in parallel. The Pioneers sounded much cleaner and more powerful too. Just make sure your amp can take it. I don't think it will really effect your subs' life too much.

________________________________________

2004 WRX - WR Blue Pearl
1997 Eclipse GS - Royal Sapphire Pearl

  

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mitsuman297Oct-07-03 05:19 PM
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#7299, "RE: bridging your amp?"
In response to Reply # 1
Oct-07-03 05:25 PM by mitsuman297

          

not neseccarily true. If the amp is 2 ohm capable, you can wire two single voice coil subs to it to get a 2 ohm load. The reason for bridging is to get more power out of your amplifier. A two ohm load will produce twice as much power as a four ohm load, in theory, but realistically it will produce about 1.8 times more power. So, to answer your question, if you have two 4 ohm single voice coil subs, wire them in parallel, and then bridge them to the amp. Hope this helps you out a little. If you have any more questions, just ask.
*edit - I just looked up the information on your stuff. Are the subs 2 ohm or 4 ohm? This could make a big difference on how you wire them to the amp. If they are dual 2 ohm, you can bridge them into a 2 ohm load on the amp, but if they are dual 4 ohm subs, you are going to have to keep a 4 ohm load because that amp (like most of them) are not 1 ohm stable.


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pea_jayOct-07-03 06:13 PM
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#7300, "RE: bridging your amp?"
In response to Reply # 3


          

Ok sorry to hijack this, but its on topic. I have two 4ohm subs and a 4 channel 600watt amp. What do you mean by wire the subs in parallel. I'm new to this audio thing.

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mitsuman297Oct-07-03 07:58 PM
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#7303, "RE: bridging your amp?"
In response to Reply # 4


          

ok, wire both of the positive wires to the same terminal on the amplifier and wire both of the negative wires to the same terminal on the amplifier. Are the subs single voice coil or dual voice coil? And what kind of amp is it? This will help me in explaining how to wire your setup. Hope this helps a bit. If you have any questions, just ask or pm me. I will be around most of the time to get back to you quickly.


winter project: custom t3/t4 turbo and some others

  

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orzechOct-09-03 04:52 PM
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#7330, "RE: bridging your amp?"
In response to Reply # 5


          

got it done tonight... turned out awesome.

thanks again



11.34 at 123 fp3065 28 psi straight pump 93 octane



95 tsi awd 5 speed-2gb 6 bolt dsmlink
95tsi fwd- parts
95 tsi fwd- beater
91 galant vr4- new build

  

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