JBL GTO-1001EZ Amp LP Issues?

[aberant1]

I have to run this amp in the H1 setting, if I flip it down to LP it slams but is hot to touch after 15 minutes. The gain is only up about 15%. Running a single 12 rated @ 1000 watts rms @ 2ohms. Does anyone have any experience with this amp? It looses a lot of power when switched to h1 but overheats in LP.

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[trumpet 5,000+ posts]

Did you follow the instructions in the manual for setting the gain?

 

[aberant1]

I had it professionally installed and they set the gain, but it's barely turned up. I had an NVX VCW hooked up to it and within 15 minutes the dustcap was broken off. I'm wondering if I need a higher powered sub. I saw the 500 watt ez amp dyno test @ over 800 watts. Could the sub cause this?

 

[Cesar1]

I have mine set on a Fi Q 15 at 2.8 ohms. Keep in mind that these amps are pretty deceiving. I want to clamp mine and see what it actually puts out. But the vcws are known for having dust caps fly off.

 

[aberant1]

I've never used jbl products before but I got this amp new for cheap. My last system was a l7 15 in a custom box with a ZX1500.1 amp (my wife made me get rid of it because it took up my whole trunk) and this jbl seemed to be putting out more than the kicker amp. I wish I could hook it up and have it dyno tested to get the true RMS and peak, I can tell when a sub is being pushed passed its limits and I have no doubt that I could have easily smoked that "2000" watt peak sub with the jbl 1000 watt amp.

 

[LosIsATool 5,000+ posts]

True rms will be way less than the dyno shows. It's called rise. You need to set it up right, shop probably messed it up

 

[trumpet 5,000+ posts]

These amplifiers make it dead simple to set them up correctly. If it sounds good now you're not going to notice if you were to manage to get a few more watts out of it, until you smoke the subwoofer, which you definitely WILL notice.

 

[aberant1]

They probably did but that NVX sub was still junk. I won't have a problem setting up the amp once I get new subs, the issue I'm having now is I don't know if I should go with a 1 or 2 sub setup and what sub's to even get! My wife has me on a budget for this system which makes it even harder..... I wish I would have went with a 1ohm stable amp instead of this mystery wattage jbl. Maybe I'll just get a SQ HDS 315 and call it a day.

 

[LosIsATool 5,000+ posts]

It's a 1000 watt amp. It's not a mystery. JBL is a trusted company

 

[Cesar1]

Have you ever had the amp just cut out on you on a low note or extended note? It's the only issue I have on mine and don't know why that happens...