JL audio 1000/1 at one ohm?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=64910
Printed Date: May 31, 2024 at 9:31 PM

Topic: JL audio 1000/1 at one ohm?

Posted By: downstarinc
Subject: JL audio 1000/1 at one ohm?
Date Posted: October 24, 2005 at 12:59 AM

ok i kno this amp is 1.5 ohm stable but i was wondering if running it at 1 ohm would really be harmful for the amp..anybody ever done this or know if it will damage the amp??

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jl audio..nuff said

Replies:

Posted By: stevdart
Date Posted: October 24, 2005 at 11:11 AM

I don't know what anybody else thinks about this, but...

...if I were a manufacturer who is marketing an amplifier capable of handling a 1 ohm impedance load...

...I certainly wouldn't cut my potential sales by advertising it as capable down to 1.5 ohms...

...unless it truly were.

The manual states it like this: "If you connect a load lower than 1.5 ohms nominal to the 1000/1, the amplifier protection circuitry activates a "safe" mode which reduces amplifier power to protect the circuitry from failure (the yellow LED on the top of the amplifier will light to indicate that this has happened)."

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: sneakycyber
Date Posted: October 24, 2005 at 11:17 AM

JL audio "slash" series will run at any ohm rating between 1 and 4 ohms. This does not effect the power output of the amplifier these amps are automatically adjusted digitally for the impedance of the subwoofers. So the output of the 1000/1 at 1 ohm is the same at 4 ohm

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Posted By: tcss
Date Posted: October 24, 2005 at 11:50 AM

I think Stevdart is right, "slash" series amps are stable from 1.5 to 4 ohms. Hence the 1.5 ohm voice coils on the 13.5 inch W7 woofer.

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There is no such thing as free installation!

Posted By: sneakycyber
Date Posted: October 24, 2005 at 12:17 PM

1000/1 Class D Monoblock Subwoofer Amplifier Specifications:

	1000/1
Rated Power:	1000 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)
THD at Rated Power:	<0.05% @ 4 ohm
S/N Ratio:	>95dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Frequency Response:	5 Hz - 200 Hz (+0, -1dB)
Damping Factor:	>500 @ 4 ohm / 50 Hz
Input Range:	Switchable from 200mV-2V RMS to 800mV-8V RMS
Dimensions (L x W x H):	19.70 in. x 9.25 in. x 2.36 in. 500 mm x 235 mm x 60 m

I stand corrected posted_image

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Posted By: downstarinc
Date Posted: October 24, 2005 at 12:27 PM

yah i guess i forgot that those amps were 1000rms from 1.5 to 4 ohms..now do you guys think its necessary to run bigger power/ground wire to the amp...meaning bigger than 4gauge..im running 1/0 for power and 4 out of the dist. block but should i run 2gauge or would that not matter that much?

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jl audio..nuff said

Posted By: DYohn
Date Posted: October 24, 2005 at 12:48 PM

How long is your cable run from the distru block to the amp? Less than 10 feet, 4 gaga is fine.

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Posted By: Paradigm
Date Posted: October 25, 2005 at 10:48 AM

The terminals will accept 4 gauge direct. I wouldn't use anything larger than that unless, as DYohn suggests, its more than 10 feet. Otherwise it should be fine.

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VEHICLE: 2002 GMC Sonoma ZR2
Alpine CDA-7940
AudioControl EQT x2
JL Audio 1000/1
JL Audio 10W6 (originals) x3
Kicker ZR120
Kicker ZR460
Polk GXR-6 x4
Polk GXR-4 x2