4ohm subs to 2ohm (2)subs sony
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=28015
Printed Date: June 10, 2024 at 12:12 AM
Topic: 4ohm subs to 2ohm (2)subs sony
Posted By: southside
Subject: 4ohm subs to 2ohm (2)subs sony
Date Posted: March 08, 2004 at 8:42 PM
i was wonder i have a 1600w mono amp an( 2) 4ohm 12inch sony subs. how can i get those subs to run at 2ohms.
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southsider
Replies:
Posted By: southside
Date Posted: March 08, 2004 at 8:44 PM
southside wrote:
i was wonder i have a 1600w mono sony amp , an( 2) 4ohm 12inch sony subs. how can i get those subs to run at 2ohms. < language=>postamble();
------------- southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 8:47 PM
If they are 4ohm SVC subs, then wire them in parallel for a 2ohm total load
If they are 4ohm DVC subs then you cannot wire both of them to the same channel and acheive a 2ohm total load ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
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Posted By: southside
Date Posted: March 08, 2004 at 8:50 PM
do i then bridge it or what? ------------- southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 8:54 PM
If you have a monoblock amp then there should only be one channel (1 set of terminals). Some mono amps though have 2 physical sets of terminals for ease of wiring.
What's the make and model of your amplifier? ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Posted By: Clean Install
Date Posted: March 08, 2004 at 8:56 PM
are they dvc or svc ? ------------- If we learn from each success and
each failure, then we can improve ourselves
Posted By: southside
Date Posted: March 08, 2004 at 9:00 PM
i have a sony xm-d1000p5 1600w mono amp, an my subs are the new red sony svc subs 1200watts
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southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 9:11 PM
Ok, the P5 series are Class D Mono amps. The "bridge" they are talking about is not a true "bridge" in the classical sense (turning 2 channels into 1).
Simply wire like the diagram I posted above and you'll be fine. The + and - where it says 2ohms is the + and - on the amp speaker output terminal. You can use seperate wires going to the subs (you don't have to daisy chain), just make sure the + on the amp goes to the + on the subs, and the - on the amp goes to the - on the subs. ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Posted By: southside
Date Posted: March 08, 2004 at 9:14 PM
ok thanks so basically anywere on the amp + to+ an- to- i got it thanks a bunch
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southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 9:16 PM
as long as there is only one set of output terminals on teh amp then yes. ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Posted By: southside
Date Posted: March 08, 2004 at 9:19 PM
ok on a regular amp u got a - then + then a + then a - it's not just one thing of - an+
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southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 9:33 PM
Ok, it's another one of the Mono amps that has 2 sets of terminals that are "internally" bridged. Both sets of terminal go to the same internal Mono channel.
Wire each sub up to it's own set of terminals (one sub goes to one set of + and -, the other sub goes to the other). That will give you a 2ohm total load (due to the internal bridge) and apx. 900 watts (according to crutchfield)
------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Posted By: southside
Date Posted: March 08, 2004 at 9:36 PM
so i don't have to wire like your diagram u got for me. an if i wire like u just told me i will get 2ohms anyways?
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southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 9:41 PM
Yes. I just found some more detailed info on that amp and was able to see the connections. Class D mono amps are single channel amps. Some, like this one, have 2 sets of terminals for ease of wiring (it keeps you from having to put multiple wires on one terminal).
And since they are internally bridged, wiring the speakers to their own terminals will be like wiring them in parallel to one terminal set of a mono amp without that extra ternimal feature (hence giving you the desired 2ohm total load) ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Posted By: southside
Date Posted: March 08, 2004 at 9:44 PM
so i don't need to thank u u are the king.
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southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 9:51 PM
glad I could help ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Posted By: southside
Date Posted: March 08, 2004 at 9:54 PM
one more thing if i wire it the way you gave me in the diagram would that put into 4 ohms?
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southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 10:00 PM
No, it would still give you 2 ohms. But you would only use 1 of the terminal sets, not externally bridge using both. So one complete terminal set would be used, while the other would be unused.
It's easiest with an amp that has that type of setup to just go a head and use both sets of terminals, wiring 1 sub per terminal. ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Posted By: southside
Date Posted: March 08, 2004 at 10:03 PM
well i went out an wired like the diagram got a little excited i love tis stuff it's my passion some of it i don't understand but i'll get the hang of it. but i'll put it back tomorrow thanks squirrel.
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southsider
Posted By: wvsquirrel
Date Posted: March 08, 2004 at 10:08 PM
Not a problem, glad I could help. ------------- Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
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