New sub amd amp

[BoominBugs 10+ year member]

I just got a new w3v2d4 and a mtx mxa 3002 amp, What would be the best way to wire this up.I tried to wire each voice coil to its own channel. It barely made any sound. I disconnected 1 voice coil and it slammed with only one hooked up. I mean it was waaaay louder. Whats the deal here.

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[Prowler573 5,000+ posts]

First test the coils with a DMM to see if they're okay.

If they are then I would suggest you made a bit of a tactical error.

It is a major pain in the posterior to wire a DVC sub with one coil powered by an independent amp channel. It can be done but it is a pain.

Since you have a Dual 4 Ohm sub and a two channel amp your options are:

A) Wire each coil to its own amp channel. Again, getting this set up properly is possible but a pain to get right.

B) Wire the sub's coils in parallel for a 2 Ohm load, bridge the amp, and then likely watch the amp quickly go into protection as it isn't stable at 2 Ohms bridged. This is simply a possible course of action and not one I would suggest following.

C) Wire the sub's coils in series for an 8 Ohm load, bridge the amp to a single mono channel, and give the sub only half of the amp's bridged, 4 Ohm output rating.

You kinda need a monoblock amp or a Dual 2 Ohm sub. The two pieces of equipment you have now aren't particularly suited for a happy partnership.

 

[BoominBugs 10+ year member]

Well I just tried to wire each coil to its own channel. But it barely put out any bass. When I wire each voice coil to its own channel it should be getting 150 watts rms to ech channel which would equal the 300 watts rms that jl recomends? What am i doing wrong here.

 

[PhatTonyDeMarco 5,000+ posts]

Are you SURE you are not mixing up positive and negative somewhere?

 

[BoominBugs 10+ year member]

No I am not.I am not sure what you mean exactky, If you mean pos to pos and neg to neg. I have them hooked up right.And I am sure that the wires are not mixed up between voice coils, because i used 2 different color sets of wire.

 

[80INCHES 5,000+ posts]

u need more power

u need around 500-600watts to get that sub 2 get decently loud

80

 

[BoominBugs 10+ year member]

500 - 600 rms?

 

[BoominBugs 10+ year member]

also why is it twice as loud with only 1 voice coil hooked up to 1 channel. when i hook up the other coil to the other channel it gets super quite.

 

[johnecon2001 5,000+ posts]

either the amp is bad... or your mixing some wiring up.

 

[BoominBugs 10+ year member]

I found this http://cgi.ebay.com/MTX-MXA-4001D-MONO-BLOCK-SUBWOOFER-AMPLIFIER-800-PEAK_W0QQitemZ5849067718QQcategoryZ64573QQrdZ1QQcmdZViewItem

Makes 400 watts rms at 2 ohms. Think this will be ok? I dont want to blow my sub. Its rated 300 watts rms. But Ive been told to give it more a couple times now.

 

[camry_tuner 10+ year member]

it will take taht easily... jl subs can take a lot of power... you should be fine with that amp.