q's about wiring 1 ohm

I have 3 JL 12'' W3's and a 1000d memphis 1 channel, i need to know how to wire the three subs down to 1 ohm with the amp (only 1 channel), if you can help please email me. jmcalimaz@yahoo.com

what impedance model are the subs

I have 3 JL 12'' W3's and a 1000d memphis 1 channel, i need to know how to wire the three subs down to 1 ohm with the amp (only 1 channel), if you can help please email me. jmcalimaz@yahoo.com


they are dual 6ohm voice coil 300watts rms

then wire everything in parallel, that will net you a single 1ohm load

how do i wire them parallel ? I do not know how to do so.

attach all 6 +'s to the amp's + and attach all 6 -'s to the amp's -

6 +'s and 6 -'s?? i have three speakers where are the 6 at? isn't there three of each neg. and pos.?

They're dual voice coil subs, which means each sub has 2 coils, so 2 + and 2 - per sub.

i see, so take the 6 neg wire them together, then take the 6 pos. wire them together, then put only 1 1/0 gauge wire into the pos. and neg. of the amp?

uh, 0awg will be WAY too big, you'll need something more like 12-14awg. And you can just daisy chain the wire from terminal to terminal, so go from the amp's + to the first speakers +, then to the other coil's +, then to the next speaker's +, etc, until you get all of them. Then do the same thing on the -.

with seperate peices of speaker wire? or the same piece of wire connected to all the voice coils?

doesn't matter, it would probably be easier with seperate pieces though

i am not going to lose power running through all those different wires? do you think that i will need a cap or extra batt. for these 1100 watts?

As long as you get a good connection with each of the wires then you won't lose any more power than you would with one long one

A cap won't be necessary as long as you set the amp's gain properly, if you don't set it properly then you could have problems, but if that were the case you would have problems with a cap also, so either way a cap isn't needed.

another way you could wire them is like this:
http://mobile.jlaudio.com/graphics/Support/Tutorials/wiring_images/DVC_Parallel_3.gif

same result, in fact it's the same wiring scheme, you're just going about it a little differently

thanx man that is what i needed i appriciate your help any specs on the speaker box now?? lol

are these the w3v2 or the w3?

and do you want sealed or ported?

[ JL Audio RMS Wattage: 300
Model: W3-D6 Voice Coil: Dual
Size: 12 inches Condition: Used
Enclosure Included: --
what do you think is better for them enclosed or ported, i would guess i would need a port hole in each chamber of the box but im not sure how that works exactly.

Price & Contact: $650; 910-525-5711; www.memphiscaraudio.com
All measurements @ 14 volts unless otherwise specified:
Frequency Response (4 Ohm IHF Load 80 Hz Ref. Crossover @ highest setting): +0 dB, -.9 dB (Crossover -3 dB @ 249 Hz)
L/R channel error max deviation 20 Hz to 20 kHz: N/A
Signal-to-Noise Ratio (Below Rated Output, "A" weighted): -79 dB
Distortion at Rated Output @ 60 Hz: .4% @ 300 watts into 4 Ohms; .5% @ 500 watts into 2 Ohms; 1.1% @ 1100 watts into 1 ohm
Output Power (Resistive) (2 ohms @ 60 Hz to 1% THD+N): 791 watts @ 14 volts; 643 watts @ 12.8 volts; 231 watts @ 10.5 volts; 425 watts @ ***
Output Power (Resistive) (1 ohm @ 60 Hz to 1% THD+N): 997 watts @ 14 volts; 886 watts @ 12.8 volts; 246 watts @ 10.5 volts; 688 watts @ ***
Output Power (Reactive) (2 ohm IHF Load @ 60 Hz to 1% THD+N): 846 watts
Crosstalk @rated output, 20 Hz to 20 kHz: N/A
Damping Factor @ 100 Hz: 25
Voltage for Rated Output: 182 mV to 4.5 volts
Idle Current Draw: 1.7 amps
Current Draw @ 1/3 Maximum Power: 33.2 amps @ 332 watts
Efficiency @ 1/3 Maximum Power: 71%
Power-Up Noise: 51.3 dB SPL
Power Down Noise: 51.1 dB SPL
*** Output Power @ onset of clipping.
do you think this setup is going to hit hard?

what car is this going into?

ported would be louder, which is what it appears you want, but it takes up a LOT more room and with 3 12's you'll need an SUV to fit it.

into an 05' impala ls i think that it will fit. i have a brother that had this exact system in a 2000 civic but it was a sealed box and it was the loadest thing i ever heard he had to reinforce his windows and part of the frame it made bolts come loose.

i think that i can pretty much make the box unless i put a port tube in each chamber, i don't know if the tube is sealed of from the speaker or not?

well you can't fit a ported box in there, so it looks like sealed is the way you're going

I can't find the T/S parameters for those subs, but the sealed box that JL used to include as a package deal was 1.25cf, so that would be a good place to start. 1.25 per would be 3.75 total, add in driver displacement and you would want around 4cf, and seperate chambers would be a good idea.

hey thanx buddy, you was alot of help, i will post pictures and specs when i get it all finished i will probably need a couple more q's answerd i'll put you on my buddy list thing.

the 1/0 guage wire you were talking about goes from the battery to power input on the amp ...... do NOT mistake this for the speaker outputs

that could end up kinda messy