JL 12w3 amp choice

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the site says nothing much more than 500watts per sub.. I was wondering from past experience or knowledge of the best amp or a good amp suitable for running two of these subs. Thanks in advance.

posted by  Metzger

what amp? what subs? theres no recogonizeable information there. All I can make out is that you have a JL amp...:ohcrap:

posted by  davsmitty

No my subs are JL12w3s, they're a discontinued line of subs that JL produced in the late 90s. I'm looking for an amp that would power them sufficiently.

posted by  Metzger

what are the specs on the subs? whats your bugget?

posted by  davsmitty

The 12w3 is rated at 300rms. I cant recommend an amp until you tell me what voice coil configuration it is. They had Dual 6ohm, Dual 4ohm and Dual 2ohm for the 12w3.

posted by  thunderbird1100

Dual 2 ohm

I was thinking of going w/ a Sony 2 channel 1000watt...

posted by  Metzger

DO NOT USE SONY AMPS!!! theyre cheap for a reason. I had/have a sony 1100W 2 chl. and it gets so hot that it shuts off after an hour of moderate playing. also, sony lies out their a** about power. The only way that amp could hit 1000W is if lightening struck it. Also, they are a HUGE fire danger, my buddy had one under his seat and it caught the whole damn car on fire. Please, for the love of God, dont buy a Sony amp. :evil: :evil: :evil: :evil:

posted by  davsmitty

Sony amps are worthless...

Since it only needs 300rms I'd wire it to 4ohm and use this...

http://www.ikesound.com/product-product_id/2552

Will do it just fine.

posted by  thunderbird1100

Well my friend had a sony amp he was selling for $20... it was his ex's.. and they broke up.. and he just wanted rid of it.. so I went w/ it :doh:

But... back to the problem.. everytime the bass should hit.. it barely hits.. I think it could be the undersized power wire.. the car, when I bought it.. already had a small power wire already ran.. could this restrict the juice needed by the amp?

My 2nd thought was the head unit.. b/c I heard different brands of head units produce better output thru the pre-amps. n e thoughts?

posted by  Metzger

power wire deffinatly could have something to do with it. If your wire is too small and going for any length, the amp will draw what it can and the wire could get HOT and melt (wich could start a fire). Also the HU's preamp output has alot to do with it. most older HUs have a preamp voltage of 1.5-2.5 Volts. the gain (or level) controll on the amp is not a volume controll. It matches the signal voltage from the HU to the amp. You can easily fix the wireing by buying a good length of 4awg and running it to the amp (make sure you upgrade the ground wire to the same size as your power). As for the signal, you can find a line driver at most audio specialist. A line driver is basicaly an electronic crossover, it limits the freq's from the HU to the amp and boostes the signal to about 4-6volts (usually). However, most linedrivers are not variable x-overs, you cant select which freq's go to your amp. Im thinking about geting a linedriver for mine and using a pair of
Y-adapters for my other amp. Wow, thats a big post for me. :mrgreen:

posted by  davsmitty

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