Wiring 2 4ohm Dvc subs in seperate boxes to 4ohms.


Josh49

CarAudio.com Enthusiast
Sep 22, 2019
23
5
Ontario, Canada
Is it possible to wire 2 dvc 4ohm subs to 4ohms in seperate boxes without running wire directly from sub to sub? Asking as I don’t have a dual subwoofer box and I’m curious how I’d go about this.
 
OP
J

Josh49

CarAudio.com Enthusiast
Sep 22, 2019
23
5
Ontario, Canada
What would happen if I connected both sub boxes to the 2 positive and negative terminals on the amp while the subs are wired at 2 ohms? Would the amp still be getting 2 ohm load from both woofers?
 

Popwarhomie

10+ year member
Jan 22, 2010
8,481
1,353
FL
Yes.


Screen Shot 2020-05-05 at 11.55.47 PM.png
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
I used to run two sep boxes for subs in the Acura Integras and 240sx to have room for amps in middle.Sounded just fine. Hey. If one goes bad.. at least the other is in a different chamber and you can still wire it up and have some bass that does just fine/sounds decent and retune
 
OP
J

Josh49

CarAudio.com Enthusiast
Sep 22, 2019
23
5
Ontario, Canada
I used to run two sep boxes for subs in the Acura Integras and 240sx to have room for amps in middle.Sounded just fine. Hey. If one goes bad.. at least the other is in a different chamber and you can still wire it up and have some bass that does just fine/sounds decent and retune
How did you wire it? I know how to properly do it but that’s with a box for 2 subs. Positive to negative on both subs and do I run the remaining positive and negative to the positive and negative terminals and run a wire from box to box?
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
How did you wire it? I know how to properly do it but that’s with a box for 2 subs. Positive to negative on both subs and do I run the remaining positive and negative to the positive and negative terminals and run a wire from box to box?
Just Follow the wiring Diagram above.. One Poss Connection and Negative connection from Box to box and to the amplifier. Pretty simple,
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
Is this possible? Not going to try it just curious if it would work
Yes you can do a 2 ohm load on these subs, but you will only be wiring up 1 coil per sub and you will only be able to put 1/2 the RMS wattage value on the subs.If they are 500 rms for both coils wired up and you oly use one coil per sub. you will only place 250 rms per sub. Ive burnt one coil out on a DVC sub and have wired down to 1 coil and ran at 1/2 the power to have some Bass till I had enough funds to replace or buy new sub/subs.
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
What would happen if I connected both boxes to the amp while the subs are wired to 2 ohms?
As long as your amplifier is 2 ohm stable bridged in Mono you shouldnt have any issues.You can run 2 ohm Stereo mode also/ Full range- dont expect to hit some serious lows in stereo mode of course
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
What would happen if I connected both boxes to the amp while the subs are wired to 2 ohms?
What amplifier are you using? Brand and Model #
 
OP
J

Josh49

CarAudio.com Enthusiast
Sep 22, 2019
23
5
Ontario, Canada
What amplifier are you using? Brand and Model #
I’m running an Alpine Pdr-m65 with a true rms of I think 725 it stated on the card in the box. Keep in mind I used a Scosche $30 line out converter tapped into just the rear right side speaker or my 2018 Silverado with stock head unit. Not sure on model number I can get that if it matters. Also just rewired everything yesterday to make sure I have a good clean connection. I’m honestly thinking I need to get sub replaced under warranty and take it somewhere to get amp tuned properly with an oscope as I’ve just been tuning it by ear.
 
OP
J

Josh49

CarAudio.com Enthusiast
Sep 22, 2019
23
5
Ontario, Canada
What amplifier are you using? Brand and Model #
Something sounds loose when I’m really pounding on it while I still feel like I should be able to put more on this sub with the power output. Sometimes I can really smell the wood from the box after a couple minutes of playing loud.
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
Something sounds loose when I’m really pounding on it while I still feel like I should be able to put more on this sub with the power output. Sometimes I can really smell the wood from the box after a couple minutes of playing loud.
You have a sealed or ported enclosure and what sub/ subs and model #
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
I’m running an Alpine Pdr-m65 with a true rms of I think 725 it stated on the card in the box. Keep in mind I used a Scosche $30 line out converter tapped into just the rear right side speaker or my 2018 Silverado with stock head unit. Not sure on model number I can get that if it matters. Also just rewired everything yesterday to make sure I have a good clean connection. I’m honestly thinking I need to get sub replaced under warranty and take it somewhere to get amp tuned properly with an oscope as I’ve just been tuning it by ear.
The Test performance Birth sheet means very little if your Electrical isnt up to the Demand for the supply.Ive always said and Ill keep saying it.. It takes Power to Make power. Ive been Tuning by ear for over 20 yrs. and have been happy with my results
 

audiobaun

CarAudio.com Veteran
Jun 28, 2011
10,550
252
USA
Something sounds loose when I’m really pounding on it while I still feel like I should be able to put more on this sub with the power output. Sometimes I can really smell the wood from the box after a couple minutes of playing loud.
Pull the subs and check the Coils with a DMM see within the limitations. Also.. Push down on the Cone to see if you feel any Scratching/ resistance.If yes, ( subs on its way to failure) Id try send in for warranty. Smell is from the Heat generated with inside the enclosure . Burtn funk smell more than likely is from heated up or burning of Coils from over powering and or /Clipping
 

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