What amp - advice needed

[dano]

I have two jl audio 10w3 - d6 suds that need fitting. I need an amp that can produce min. 200w rms x 2 chanels and can run at either 3 ohms, 6 ohms or 1.5 ohms.

every dealer I talk too gives me different advice.

I have been looking at the Lansar vibe or rockford, but the rockford is very expensive.

Any comments guys'

Cheers

[Chris]

of the two listed i would go for the rockfords:)

but i just luuurve my JBL:D :D :D

[dano]

cheers

[Richie]

Rockfords are very good bass amps that is what I use in my car for my sub.

[Diddn]

I have 2 DLS A3 Amps.
2 channel bridgable with following outputs (all RMS).
4 ohms - 2x 150W or 1x 300W
2 ohms - 2x 300W or 1x 600W
1 ohm - 2x 600W or 1x 1200W

Depends what you consider as expensive though!!
I don't know anything about the pricings of Rockfords, but these A3s are £650 each and totally worth every penny.

[cdo1uk]

hi,,, i dont know if your interested, but, i have a Phase Linear mono block amp that can handle half ohm.....at 2000 watts rms....
its quite a small amp too...all i want for it is £200....i need the money u see....
Keith

[dano]

could be interested mate, have you any pics, sizes etc.. and will it run as described as i aint to up on ohms and dont really understand em. 2000w rms is gunna blow the crap out of my 250w rms subs though.

how many chanels does it have?

I have rockford front speakers at 50w rms could it run these aswell?

any detail or advise mate please

[Diddn]

Dano,

Ohms is basically a measure of impedance given to the amplifier.
Most car speakers are 4 ohms.
If an amplifier is rated at 100W RMS per channel at 4 ohms, if you use two subs wired in parallel (that is you connect one sub's + connector to the other ones + connector) the impedance goes down to 2 ohms and in theory, the amp's power output doubles to 200W RMS per channel.
To get it down to 1 ohm, you'll need 4x4 ohm subs wired in parallel. To go down to 1/2 ohm, you'll need 8 subs and so on.
Therefore a 100W per channel (at 4 ohm) amp running at 1/2 ohm should give out 800W per channel.
Assuming all 8 speakers are identical and wired to 1/2 ohm, you'll have 100W going to each one.
Imagine 8 10" subs with 100W RMS each in a car - you be causing air quakes!! :eek:
Mind you, you'll be able to fry eggs on that amp after some serious bassing!! :cool:
The lower impedance on an amp, the hotter it will run (assuming it was designed to handle the impedance you've given it), so you have to consider where you install it. Cooling fans may be necessary.
If the amp mentioned will push 2000W at 1/2 ohm, then given a single 4 ohm sub, it should push out only 250W.
HTH.

[dano]

cheers guys,

I have founf asupplier in the states who will send me a new amp at about 1/3rd the cost of the same item here.

It runs 2 x 200w rms at 4 ohms

but will run at 2 ohms

I presume that if it runs at 4 or 2 ohms it will be ok to run at 3 ohms. At 3 ohms it should be pushing about 250w rms cos if i wire my subs 1 sub per channel they need 3 ohms.

Is this correct?

Cheers.

Daniel

[Diddn]

Yep, Sounds about right Dano.

[dano]

Cheers Didin you have been a great help!

Regards

Daniel