ok so ive always had a 2 sub system. i have a 400a4 rockford bridged mono. 2ch 4ohm amp. i want to switch to a single sub for space reasons and thought i could use a 4ohm dvc. is this correct? a couple that ive researched talk about operating them in 2 or8 ohm. i thought i could just put each amp ch on each voice coil am i thinking wrong? thx

 

If you have a 400a4 then you have a 50w 4 channel amp, not a 2 channel.

Can you clarify what you have?

http://www.rockfordfosgate.com/libra...ultiCh-MAN.pdf

 

thats it. punch 400. notice top line bridged 4ohm 2 channel. what i need to know regards a dvc sub. would a 4ohm dvc work with the 400a4 in 2channel mode? thanks for quick response!

 

Maybe get an amp thats made to run subs?

 

ok guys, if the amp pushes 300 bridged per "birth certificate" I think it's "designed" to run subs... I thought buy a dvc 4ohm and it would work. But a pioneer dvc 4ohm was shown as being run in 2ohm or 8ohm. Threw me off a bit. wanted to utilize both channels on one sub.Thanx for the lack of positive input. So answer the actual question if you are able. PLEASE. Thanks again

 

Yes, you can run each pair of channels to each VC on a DVC sub. You will need to make absolutely sure you are giving each channel the same power. Use a DMM to do this.

And yes, you will want a DVC 4 ohm sub (each VC is 4 ohm)

 

chupo. thanks. i appreciate the confirmation. i thought that but i guess what your saying is ideally the sub would be wired to run off of one channel. i am kind of in the air on what to get. i have always been loyal to rockford. but ive also done a little browsing at pioneers dvcs. im a pioneer fan too. of these two which do you have a preference on if any. originally i liked rockford because they were made in usa. i know this isnt true anymore, altho what really is? thank you again for your consideration!

 

haha.

Im willing to be that about 90% of 4 channels installed out there are running door speakers, as that is what a 4 channel is meant to do. Especially since 200 watts at 4 ohms isnt exactly a lot of power. When most people bridge a 4 channel down like that, it is to supply power to power hungry component door speakers, such as Alpine Type R Components which take 220w RMS. If you really want to run a sub off of it, buy 1 sub, SVC, in the 150-200 watt RMS range, or do as Chupo said and run each channel to a VC

 

sundevil youre probably right. i just didnt want to reengineer my system completely and i wasnt sure about running only one of the channels full time if that would cause problems or anything. thanks again!

 

You can use one bridged pair and not the other without any problems.

You have to remember that subs 10 years ago (when that amp was made) were more efficient, so they didnt need the power that some of the newer offerings.

Were I looking for a fairly major brand subwoofer for general use I would be hard pressed to pass up a JBL GTO series.

 

sweet. I'll check those out. My first system ever was 2 jbl 10s in a ttop well of a camaro. Man those things did sound good!for some reason I thought jbl had fallen by the wayside. Thx