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wiring 2 dvc subs


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luckydawg003 
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Posted: August 30, 2007 at 6:17 PM / IP Logged  
I just got 2 10" kicker cvr subs. They are Dual Voice Coil at 2 ohms. I want to hook them up to my 2 channel amp at a 2 ohm load. How can I do this. I think if I put the coils in series and then the speakers wired in parallel this will give me a 2 ohm load...but that is only bridged to my amp not using both channels. Any way I can bring each sub down to a 1 ohm load that way I can have both subs wired up and a total of 2 ohms load on the amp. Thanks
jmelton86 
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Posted: August 30, 2007 at 7:01 PM / IP Logged  

You only have 2 options for wiring 2 dual 2ohm vc subs, 2 or 8ohm final impedance.

https://www.the12volt.com/caraudio/woofer_configurations.asp?Q=2&I=22

I doubt your 2channel amp will support a bridged 2ohm load, most don't. If it can, it'll say it's 1ohm stable x 2 (which is the same as bridged 2ohms). Also, I have a 2channel bridged to a dual 4ohm sub (can only get a 2 or 8ohm load also) @ 8ohms, and I can't tell that much of a difference in volume from the power. You won't either if you even can at all.

Your only option is to wire the 2 subs up to 8ohms, and bridge the amp to it. Running big speaker wire straight from the amp to the speakers themselves will help a little. I did this and with a DMM I actually read right over 6ohms throught my sub.

Have Fun!

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stevdart 
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Posted: August 30, 2007 at 10:11 PM / IP Logged  
Or change out the amplifier to a mono and use the existing stereo amp for your front speakers.  Then you can load it with a 2 ohm impedance.
Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
luckydawg003 
Copper - Posts: 63
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Posted: August 30, 2007 at 11:43 PM / IP Logged  
ok just looked up the specs on my amplifier. It is 2 ohm stereo, 4 ohm mono stable. I am so confused about this. I don't think I can hook the speakers up to bridged(1 Channel) for a 2 ohm load. Let me know what will be the best way to hook up these subs. Thanks
jmelton86 
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Posted: August 30, 2007 at 11:48 PM / IP Logged  
jmelton86 wrote:

You only have 2 options for wiring 2 dual 2ohm vc subs, 2 or 8ohm final impedance.

https://www.the12volt.com/caraudio/woofer_configurations.asp?Q=2&I=22

I doubt your 2channel amp will support a bridged 2ohm load, most don't. If it can, it'll say it's 1ohm stable x 2 (which is the same as bridged 2ohms). Also, I have a 2channel bridged to a dual 4ohm sub (can only get a 2 or 8ohm load also) @ 8ohms, and I can't tell that much of a difference in volume from the power. You won't either if you even can at all.

Your only option is to wire the 2 subs up to 8ohms, and bridge the amp to it. Running big speaker wire straight from the amp to the speakers themselves will help a little. I did this and with a DMM I actually read right over 6ohms throught my sub.

Have Fun!

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Big3 in 1/0G
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luckydawg003 
Copper - Posts: 63
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Posted: August 31, 2007 at 12:10 AM / IP Logged  
So wont that make it an 8 ohm on my amp?
luckydawg003 
Copper - Posts: 63
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Posted: August 31, 2007 at 10:08 AM / IP Logged  
Will my amp be able to handle a 8 ohm load total? Or do I have to bridge that 8 ohm load down to like 4 ohm. Maybe I'll just see if Kicker will change out my subs to dvc 4 ohm. Then everything will be fine.
stevdart 
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Posted: August 31, 2007 at 10:03 PM / IP Logged  

luckydawg003 wrote:
ok just looked up the specs on my amplifier. It is 2 ohm stereo, 4 ohm mono stable. I am so confused about this.

"ohm load", or impedance load, is the reverse of what you would normally think it should be.  The higher the number, the less load it puts on the amp, and therefore the better the amp performs (but at a lower output).  It's like wire gauges....the lower the number, the bigger the wire.  So that is to say, any amplifier can handle an 8 ohm load.  Not many amplifiers can handle a 1 ohm load.

Now this takes us to the subject of bridging.  A 4 ohm bridged load is the same as stereo at 2 ohm per channel.  An 8 ohm bridged load is the same as output in stereo at 2 X 4 ohms.  And, a 2 ohm bridged load requires that the amplifier be capable of handling the current demands of 1 ohm per channel.

As has been said and repeated, you either change the speakers' impedance, change the type of amp from 2 channel to 1 channel, or use what you have and load the amp at the higher 8 ohm impedance (with a little less output as the result).

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

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