JL Audio 1000/1 Dyno

[KingPen]

Dyno test for the JL 1000/1

My initial thoughts, this thing is amazing. People give the retail brands like JL a hard time for being over priced but this thing was impressive none the less.

So with that said. This amp is 1.5 ohm stable and is suppose to have a regulated power supply that delivers the 1000w at 1.5 to 4 ohm with an input voltage of 11.5 to 14v. Its about half the size of the saz 1500 that we tested a couple days ago so that is a big claim for a small amp. Especially considering the saz fell off very hard at higher impedance (149w at 9.2 ohm)

So the results:
Wired to 2.8 ohm rising to 6.4 ohm
642 watts at 11.54v input
65% efficient at 6 ohms

Granted it didn't do the 1000w but it also was rising over 4 ohm. If wired at 1.5 ohm I could really see this amp doing the 1000w at 4 ohm and less. It gets a thumbs up from me On a side note this thing was getting hot quick.

www.youtube.com/watch?v=_6b9gorNLJo

[TaylorFade]

Y'all were beating the snot out of that sub. Geez.

One little tip when testing amps for power...

Play a tone at (or near) tuning. This will result in the lowest reactive. You may hove gotten close to the 4 ohm with a lower note.

One of the things I hate about the AMM-1 is that you can't see the reactive and power at the same time. Your rise kept climbing because of the voice coil heating up. If you came out of pause instead of that painfully slow roll, you would have seen less voltage drop and more power (probably). But doing it slowly like that allowed you to see the voltage right where the peak/hold stopped climbing- so that's good.

I clamped a 1000/1 about a million years ago and got like 1,700volt/amps. This was before I had a scope and shit though so that was probably clipped to shit. And at like 15v starting.

I don't recall it being "small" by any means though. It's a big bish for a 1k.

And by their nature, regulated amps are less efficient than non-regulated. But 65% seems awfully low.

[KingPen]

Your absolutely right taylor. I was talking to Tony about having the impedance on the dyno screen as well. I keep forgetting to grab my extra dmm while doing these so that i can measure them at the same time. The dyno run was ran after the coils were warm and the the impedance run was while they were completely cold. I probably should have gave them a bit of time to warm up first. We weren't really out there to do this test we were setting gains and crossovers and decided to record enough to put together a dyno video.

I will say the 65% seemed low but I don't really know what else to say. The meters seem to be pretty accurate and consistent. Neither one of them are Fluke quality but neither are el-cheapos either.

And as far as size. Its not small like say the audiopipe mini or any of the brazilian boards but in comparison to the saz amp it seemed much smaller. Long but skinny.

As for the frequency. I brought a USB drive with every frequency on it but the car owners radio wouldnt read it for some reason so we just use the SMD DD1 disk that I had with me which basically means 40hz or nothing lol.