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Old 17th June 2008, 04:07 PM   #1
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Default 1 JL 12w0 on a 500/1 amp lol never too much power right?

sup ppl im new to the forums, anywho i gotta a question, i have this ancient JL audio 12w0 that i thought was burnt out but i hooked it up to my JL 500/1 today and it worked suprisingly, but the problem i have is this, the subwoofer is An 12w0-8ohm single voice coil sub, and my amp(500/1) doesnt say anything about being 8ohm compatible so my question is how do i wire this sub down to atleast an 4ohm load, i dont even know if its possible......thanx

oh yea and, a year ago when i thought i burnt the voice coils out in this sub i was using a PPI-250watt amp, but i had the gains turned up wayyy too high and that made it start crackling, only reason i dont want to use that amp now is because i just dont feel like hooking it up as my other amp is already installed, plus someone is supposed to buy my PPI amp today., for $40

SORRY FOR THE LONG POST
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Old 17th June 2008, 07:37 PM   #2
p0lar is offline p0lar  Canada
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Default Re: 1 JL 12w0 on a 500/1 amp lol never too much power right?

Quote:
Originally posted by TeeJay850 sup ppl im new to the forums, anywho i gotta a question, i have this ancient JL audio 12w0 that i thought was burnt out but i hooked it up to my JL 500/1 today and it worked suprisingly, but the problem i have is this, the subwoofer is An 12w0-8ohm single voice coil sub, and my amp(500/1) doesnt say anything about being 8ohm compatible so my question is how do i wire this sub down to atleast an 4ohm load, i dont even know if its possible......thanx
Try this link for more documentation on the JL Audio 500/I.

Note page 10, and I'll quote:
"If you connect a load higher than 4 Ohm nominal to the 500/I, power will drop by half with every doubling of impedance above 4 Ohm."

Essentially, you'll be pushing approximately 250 Watts RMS to your 12w0-8. See page 4 of that product's documentation, especially since it is only rated for 125 watts of continuous power. At 250 watts, you will be compromising the long-term reliability of the driver. (paraphrased)

Good luck!
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Old 17th June 2008, 09:40 PM   #3
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yea.....i understand now....but the poor old 10W0 had a heart attack today lol...r.i.p to the 12W0
back to the 10W0's
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Old 18th June 2008, 01:42 AM   #4
p0lar is offline p0lar  Canada
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Quote:
Originally posted by TeeJay850
yea.....i understand now....but the poor old 10W0 had a heart attack today lol...r.i.p to the 12W0
back to the 10W0's
Is this shorthand for, I fried the 12w0-8 with the 500/1?

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Old 18th June 2008, 11:26 AM   #5
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i dont know....i think it was fried from the beginning now that i think about it, it started crapping out on me a year ago wwhen my PPI-250 was powering the sub....but it actually put out some sound right before i actually mounted it...
and i meant "the poor old 12W0" not 10W0 lol those litttle things are doing unreal things right now and i mean that in a good way
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Old 18th June 2008, 11:54 AM   #6
AndrewT is offline AndrewT  Scotland
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Location: Scottish Borders
The power of the amplifier does not damage the speaker.
It's the hand of the operator adjusting the signal sent to the amplifier that damages speakers.

Listen and be sensible.

Tannoy specify their dual driver B950 using two 300W into 8ohm drivers in parallel, as suitable for amps from 1000W to 2000W into 4ohms.

They are expecting the operator to be sensible in setting up the system.

The reason for using amps that are capable of high voltage swings is to to prevent clipping of transient signals sending distorted information to the drivers. It is not to allow silly operators to get extra volume from overloaded amp/driver combinations.
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regards Andrew T.
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