Wiring Single 4 ohm DVC sub to a 2 channel amp
#1
Senior Member
Thread Starter
iTrader: (10)
Join Date: Jul 2006
Location: Los Angeles, CA
Posts: 2,077
Wiring Single 4 ohm DVC sub to a 2 channel amp
I currently have it the sub wired parallel and bridged to amp...which Im told is BAD because the Amp specs say 4 ohm when bridged mono. But i've been running this since I bought the car (came with sub/amp). Never noticed the sub turning off or any intense over heating. Amp is set at 110 LPF , 2 v, and 0 boost.
Would this be appropriate? Some say the sub will not get exact frequencies from the LEFT and RIGHT simultaneously.
So, should I do it the 2nd way? Or would that damage my sub? Also, whats this about running a RCA splitter to one of the either Left or RIGHT inputs to run the 2nd method? Does that Mean I need to remove the Left RCA wire from my Head unit and run 2 RIGHTS and combine those to the Right Input on amp only? Any drawbacks to that?
Sony XM-SD22x
Sub is SWR-1402 Alpine Type R 10" 4 Ohm DVC
Would this be appropriate? Some say the sub will not get exact frequencies from the LEFT and RIGHT simultaneously.
So, should I do it the 2nd way? Or would that damage my sub? Also, whats this about running a RCA splitter to one of the either Left or RIGHT inputs to run the 2nd method? Does that Mean I need to remove the Left RCA wire from my Head unit and run 2 RIGHTS and combine those to the Right Input on amp only? Any drawbacks to that?
Amp Specs
Suitable speaker impedance
2-8 Ohms (stereo)
4-8 Ohms (When bridging)
Max Outputs:
400w x 2 @ (4 ohm)
600wx 2 (2 ohm)
1200w (BTL, at 4 ohm)
Suitable speaker impedance
2-8 Ohms (stereo)
4-8 Ohms (When bridging)
Max Outputs:
400w x 2 @ (4 ohm)
600wx 2 (2 ohm)
1200w (BTL, at 4 ohm)
Sub is SWR-1402 Alpine Type R 10" 4 Ohm DVC
Last edited by shadyonedeath; 04-30-2010 at 01:02 PM.
#3
Senior Member
Thread Starter
iTrader: (10)
Join Date: Jul 2006
Location: Los Angeles, CA
Posts: 2,077
Ok cool, so my next question is....why doesn't it feel like its getting much RMS even though the sub is demanding more? Are my settings fine?
110 LPF on, 2v, zero boost.
Should I up the boost? I was told not too though...
110 LPF on, 2v, zero boost.
Should I up the boost? I was told not too though...
#4
It says 2-8ohms (stereo) 4-8ohms (bridged) If your wired parallel I think that's not gonna be stable. Check the link below, this is how it should be wired. As far as the rca split, ive never heard of it.
http://www.rockfordfosgate.com/rftec...1&woofer_imp=4
http://www.rockfordfosgate.com/rftec...1&woofer_imp=4
#5
Senior Member
Thread Starter
iTrader: (10)
Join Date: Jul 2006
Location: Los Angeles, CA
Posts: 2,077
Yea, but I've been running it like this since I bought the car and never had any Protection mode or over heating issues.
Is it safe to say that If i keep it parallel and bridged @ 2 ohms, that the amp will protect itself and not catch my car on fire? Thats all im worried about. Im not worried about killing the amp, i just don't want a marshmallow for a car.
Is it safe to say that If i keep it parallel and bridged @ 2 ohms, that the amp will protect itself and not catch my car on fire? Thats all im worried about. Im not worried about killing the amp, i just don't want a marshmallow for a car.
#7
I had a single 4ohm sub runnning bridge on a 2 channel amp for almost 10 years and the sup just stop putting out any good sound. It still play no good bass responce, I know the sub is gone because I put it on another amp and it still play low. Over that long period I just slowly killed the sub running it at 2hms with an amp that wasn't 2ohm stable. The clipping killed it and I didn't know it.
#8
First off you have a Dual 4 ohm sub, not a single 4 ohm dvc. Now for a bridged setup, the minimum load the amp is asking for is 4 ohms, so you're over driving it with a 2 ohm load, however with the wiring the actual resistance could potentially be near 4 ohms, hence why you're not experiencing any major issues.
#9
- 200 watts RMS x 2 at 4 ohms (250 watts x 2 at 2 ohms)
- 500 watts RMS x 1 bridged output at 4 ohms (4-ohm stable in bridged mode
- These are the specs I found on crutchfield
each voice coil on that type R is rated at 250 RMS so if you wire it the second way you will be pumping 200 watts RMS into each voice coil...There will be no delay. It will simply be like pushing two single voice coil 4 ohm subs at the same time. Hopefully I could help if you have any more questions please ask.
http://www.rockfordfosgate.com/rftec...1&woofer_imp=4
this is a great website to learn about subwoofer wiring and options.
for instance right now I have one dual 2 ohm voice coil sub wiring into a 1 ohm stable mono block amp.
ALL IN ALL RUN IT THE SECOND WAY IF YOU DONT WANT TO BUY ANYTHING ELSE
Last edited by mjhuffer; 05-04-2010 at 11:54 PM.
#14
Senior Member
Thread Starter
iTrader: (10)
Join Date: Jul 2006
Location: Los Angeles, CA
Posts: 2,077
yes, currently its mono, but if i run it in SERIES its not MONO anymore, each coil would get a different single depending on what side the bass is coming from. This is what i've read, and its not advised because it will mess up your sub. Im more worried about the sub because its such a fine piece of ***, the amp i could care less.
Thread
Thread Starter
Forum
Replies
Last Post
jmlee44
4th Generation Maxima (1995-1999)
8
10-02-2022 02:13 PM