Whats the best way to hook up one jlw3v4 12 with dualxpa4640 amp?

Bridging an amplifier refers to combining the power of two channels to run one speaker at higher power. If it is wired correctly, your amplifier is running with 4 channels bridged into 2 speakers now.

First you cannot run 2 dvc 4 ohms at 2 ohms its either 1 ohm or 4 ohm. and yes you should bridge them better performance and power. i have looked it up for you and this is your 2 options at running your subs.

Pace posted on Saturday, March 05, 2005 - 01:08 GMT Your subs are dual 4 ohm voice coils so if you want to bridge your 2 channel amplifier to your two subs then wire them parallel, meaning the + to + and - to - ( Do this to both subwoofers), Then run a wire from one positive and one negative on each sub and bring the two positives together and the two negatives together and hook both positives to the far positive connection on your amp and connect both negatives to the other negative on your amp,

This will create a 4 ohm load on your amp.

Although if it's a two channel and you have two subs it's usually pointless to bridge them because if you use one channel per subwoofer its going to be the same as if both subs were bridged. example) 800 watts x 1 bridged power of your amplifie (4 ohms) is the same power as 400 watts x 2 at 2 ohms.

Well i tried looking up that amp, but Fosgate sight is down. So assuming that the best power out of your amp is 2ohms off the bridged hookup, and the subs are 4 ohms per coil, the best way is to only use one side of each speaker and hook it straight the the bridge. Only using one hook up wont hurt anything, its just for giving you wiring options. And when adding up ohms of speakers, it goes like this. If you had two 4 ohm subs, that'll give you a 2 ohm load. If you hooked up all your hookups, it would be like having four 4 ohm subs, and would give you a 1 ohm load.

From the specs this amp can only handle 4ohms when bridged but can handle 2ohms when it's not bridged

Specifications

• Continuous Power (20Hz-20kHz, 0.04% THD)
  • 2 ch: (4 Ohm) 100Wx2
  • 2 ch: (2 Ohm) 200Wx2
  • 1 ch: (4 Ohm) 400Wx1
• Maximum Power (EIAJ)
  • 2 ch: (4 Ohm) 250Wx2
  • 1 ch: (4 Ohm) 750Wx1
• Frequency Response: 10Hz - 50kHz (0,-1dB)
• Total Harmonic Distortion: <0.01% (1kHz, 4 Ohm)
• Signal-to-Noise Ratio: >105dB (IHF-A Weighted, at 1kHz)
• Dimensions: 10-3/8" x 2-1/2" x 13-5/8"

Hope that helps.

if i were you i would put the switch to 4ch and the run one sub from ch1-2 bridged and then ch3-4 bridged. I would have to bet this amp is stable only to 4 ohms bridged with so many channels

Hello bdawson,

Maybe. Some, but not all, 4-channel amps can be bridged. You'll need to provide a specific brand and model number for a more definitive response.

On many bridgeable amps, the connections are shown right on the output terminals, usually the "+" of one channel and the "-" on another channel. The connection diagram in your user manual may also show which channels are bridgeable and the appropriate connections. Some amps may support what they call "tri-mode", powering both full-range speakers and subs at the same time.

Using a multi-channel amp with the channels bridged to power subs is a compromise. While you'll get an increase in power, it usually isn't as much as you would get from a monoblock. And fine tuning for the best sound is more complicated, balancing the filters and crossover so that the correct frequencies are sent to the appropriate speaker.

Hope this helps.

first thing first does your 4 cahnnel amp match mate with your rf twelves? if it is try to bridge them. but make sure to adjust the gain to the lowest range as possible. tune your system and match the desired range for your bass and mids.

dual 2 or dual 4

dual 2 wire vc's in series for a 4 ohm load each. Hook each speaker seperate channels on the amp.

dual 4 wire vc in series for an 8 ohm load each. Hook both + to the right + on the amp and both - to the left - on the amp. or

dual 4 wire vc in parallel for a 2 ohm load each and hook each speaker to seperate channels on the amp.

You have the amp hooked to the "Antenna turn on" which is the blue wire.... you need to hook it to the "REM" output whis is Blue with a white stripe.