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DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: October 03, 2004 at 11:34 AM / IP Logged  

pudamobile wrote:
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... http://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

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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pudamobile 
Member - Posts: 23
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Joined: September 29, 2004
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Posted: October 03, 2004 at 11:55 AM / IP Logged  
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!
Rushman 
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Posted: October 03, 2004 at 3:29 PM / IP Logged  
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.
djdirtysouf 
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Joined: September 27, 2004
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Posted: October 03, 2004 at 6:25 PM / IP Logged  

pudamobile wrote:
djdirtysouf, what are the stats for those subs?

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

Rockford Fosgate
djdirtysouf 
Member - Posts: 25
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Joined: September 27, 2004
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Posted: October 17, 2004 at 12:13 AM / IP Logged  

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 !!?

Rockford Fosgate
stevdart 
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Posted: October 17, 2004 at 12:40 AM / IP Logged  

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.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
djdirtysouf 
Member - Posts: 25
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Joined: September 27, 2004
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Posted: October 17, 2004 at 1:20 PM / IP Logged  

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

http://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!!!

Rockford Fosgate
djdirtysouf 
Member - Posts: 25
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Joined: September 27, 2004
Location: United States
Posted: October 17, 2004 at 1:23 PM / IP Logged  

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!!!!???

Rockford Fosgate
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