amp suggestions

Hey everyone! I have a quick question. I have a pair of JL Audio 8w3s with Dual 6 ohm voice coils and a 12w3 with dual 6 ohm voice coils, I want to run them all off the same amp, and the way I'm going to run them the amp will see a 4 ohm load. Seeing as the 8w3s handle 125 watts RMS and the 12w3 can handle 250 RMS (although I've heard that JL's subs can handle alot more), what kind of amp should I get and how big? I want decent quality and I don't want to pay an arm and a leg to get it. Thanks for your time guys!

personally i would get two small amps since the frequency response of the subs are differeny. plus you could run the 8"s in stereo and the 12 in mono

I'd like to know how you think you're going to achieve a 4-ohm net load... unless you're building a pretty sophisticated passive crossover network with impedence shifting coils...

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go with rknj01 and split them up on two different amps , mostly because of frequency issues. I wouldnt even worry about wattage now because like you said , they can handle alot more. If you put the 8s and a 12 on the same amp output , you may get frequency cancellation and end up with less bass than you intended. Remember , sometimes less is more

I think I might go with 2 smaller amps, but as for how i figured a 4 ohm load...I referred to the JL Audio's Data sheet for their subs... https://www.jlaudio.com/subwoofers/pdfs/12W3_MAN.pdf on page 2 it says "W3 Voice Coils In Series" and then it has one sub, 2 subs, and 3 subs in series. I will have 3 subs and according to JL by wiring the voice coils in that way I'll be presenting my amp with a 4 ohm load off my 3 6 ohm DVC subs...I'm kind of a newbie to DVC subs but I'd expect JL Audio to know what they are doing. Thanks Guys

hey wats up yall!!!

can somone answer this question?

i have 2  12' rockford fosgate punch HE2's DVC 4ohm each woofer . Okay

i was wondering wat would match this perfect? i was thinking a rockford fosgate 801S Amp??

would that match it perfect? and sound great!!!?? email me or reply thanks yall

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Rockford Fosgate

pudamobile..........thanks for the link to the JLaudio dvc wiring diagram. It might help solve some dvc issues ive had before.

no problem, I'm fairly new to the DVC world and especially JL DVCs so I decided the best place to look is right on their site, Glad I could be of help

djdirtysouf, what are the stats for those subs?

https://cgi.ebay.com/dll?ViewItem&category=39744&item=5723646466&rd=1 would I be able to use an amp like this to power the 12w3 bridged and then use the other 2 channels to push the 8w3s? thanks all!

pudamobile wrote:

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I think I might go with 2 smaller amps, but as for how i figured a 4 ohm load...I referred to the JL Audio's Data sheet for their subs... https://www.jlaudio.com/subwoofers/pdfs/12W3_MAN.pdf on page 2 it says "W3 Voice Coils In Series" and then it has one sub, 2 subs, and 3 subs in series. I will have 3 subs and according to JL by wiring the voice coils in that way I'll be presenting my amp with a 4 ohm load off my 3 6 ohm DVC subs...I'm kind of a newbie to DVC subs but I'd expect JL Audio to know what they are doing. Thanks Guys

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Ah, I missed that there are three subs.  I thought you said you had two 8" DVC @ 6-ohms.  If you have three, wire each for 12 ohms and then parallel these to the amp for a net 4-ohm load.  But, since your three subs do not match, I would not wire them off the same amp.  A 12" wired in parallel with an 8" will overpower the 8"... unless you use a passive crossover and send different frequencies to each one.  Use two amps, low pass your 12" at 80Hz and bandpass your 8's in stereo between 80 and 120Hz.  High pass your mains at 120Hz.

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I've seen people use the JL 450/4 "Big Block" to wire 3 subs much like this...he used channels 1 & 2 bridged for the 12w3 and then channels 3 and 4 for his 8w3s, I absolutely loved the sound. Unfortunately I don't want to spend the money for the JL 450/4 amp so I was thinking maybe that Rockford 501x? just a thought about it, also I have access to a 12w3d4 and a 12w3d6, which would I be better to use for wiring flexability? thanks!

Im not too familiar with the newest RF amps but if thier as good as the specs listed on the web site , it sounds like you'll be able to power everything you have there. I still say you shouldnt put all 3 subs on the same frequency tho , thats just my opinion.  Unless the amp has built in crossover maybe , I didnt notice but if it does then you should be able to adjust all the subs acordingly. If no x-over , I would suggest putting one in the mix.

pudamobile wrote:

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djdirtysouf, what are the stats for those subs?

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oh i forgot to put the ratings on the subs okay here they are.

i have 2  12' rockford fosgate punch HE2's DVC 4ohm 800wattmax 400wattrms each woofer . Ok

i was wondering wat would match this perfect? i was thinking a rockford fosgate 801S Amp??

would that match it perfect? and sound great!!!?? email me or reply thanks yall

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Rockford Fosgate

oh i forgot to put the ratings on the subs okay here they are.

i have 2  12' rockford fosgate punch HE2's DVC 4ohm 800wattmax 400wattrms each woofer . Ok

i was wondering wat would match this perfect? i was thinking a rockford fosgate 801S Amp??

would that match it perfect? and sound great!!!?? email me or reply thanks yall

please can somone help me !!?

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Rockford Fosgate

Yep, I'd say that's a perfect fit.  Here's a comparison of some RF amps that would work for your subs.

It'll "sound great" as long as the enclosure is correct, and the car metal is damped properly, and the deck is a good one, and you have good speakers to play the mids and highs, and they are amplified, and the gains are set correctly...........etc.etc.

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

oh thanks stevdart for responding i appreciate that!! okay about the amps

the 03 models are cheaper and i like the way they look so i was really lookin for an 801s you put an 601s i wonder wat the difference would be anyways but okay ill tell u everything i have and can u please tell me if its a good fit? right now i have the aiwa deck with the 2 tweeters and midranges hooked up and it sounds cleannnnnnnnnnn!! crisp and now distortion!!:)

okay

SUBS:i have 2  12' rockford fosgate punch HE2's DVC 4ohm 800wattmax 400wattrms each woofer .

AMP: Rockford Fosgate 801s

DECK: Aiwa not sure what model but its  like that neon blue screen goes up to Vol-80

MIDRANGE: 2 Alpine 5 1/2's

TWEETERS: 2 Power Acoustic With Built In Cross Over

ENCLOSURE: Subzone, SUBZONE's Lineup of Hatch Type Enclosures includes 10", 12", and 15" Models.  We offer single, double, and triple cutouts.  All SUBZONE Hatch enclosures are built with 3/4" MDF (medium density fiberwood).  Plus, all Enclosures include Terminal Cups with Gold Plated multi-way Binding Posts

Model:H-122  

Cutout: 12" (2) 11 1/8"  

Internal Vol Each Chamber: 1.4 cubic feet  

Dimensions: 15 1/4" h X 15 1/4" d x 29" w

https://mainstreet-caraudio.com/car/subzone/universal-dual.htm

i hope this enclosure fits it sounds good ive tested it with my pioneer gmx972 2 channel 800 watt amp and it would thump but that amp sucks!!!!!!! lol so i sold it!!!    but i hope this enclosure would be right cuz i had made one homeade perfect but the only thing i didnt do is calculated the cubic feet its a pretty big 12' box looks great!! but them rockfords wouldnt really thump in them but i dont know what do u think please answer my questions thanks mann!!!

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Rockford Fosgate

oh sorry for posting so long of a story lol and keep postin!

i have a 67 ford mustang and it aint really dampended i think a dynamat trunk kit will do? but im also thinkin of rhino lining all the inside of my car even the trunk the floor and the headliner that way everytin is quiet and sounding goodd!!!!???

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Rockford Fosgate