i have 2 JL w1v2.4 subs powered by a JL 500 rms amp and they were working fine till i tuned then a little different and now the subs power out when a bass hit comes...any suggestions on what to do

 

Maybe a loose wire.

 

You prolly turned the gain up too high. Lower it abit.(by tuning i assume you cranked your gain or b.boost, or both)?

 

When you say tuned them a little different, what exactly did you do? This info might help...

 

well i changed the bass boost and the input sensitivity to try to achive crisper bass

 

i investigated the probelm futher by turning down all my gains and bass boost and still when i turn the boost up to about a quater or half the subs still power out

 

also when this happens the power light turns right off then comes back on after the bass hit

 

I personally almost never touch the bass boost options on any amp or deck. I find it boosts the lower frequencies too much and makes it sound sloppy and unnatural. Sure, it's sounds like it has more "boom" but it is hard on amps and subs for the same reason. I imagine the amp is trying to produce more power than it can (aka what you are wanting, it seems) and as a precaution, the amp's protect mode is engaging to stave off the harsh effects of clipping. Crisp bass will come from the components you select for your system and how well it's installed. EQ settings are there strictly to correct peaks and valleys in the frequency response.

 

On this car, here's what I would do (just to keep things simple). Turn the gain to flat. I'd most likely set the lowpass around 60-80Hz (depending on the rest of the system). For the deck, pick the EQ curve that you most listen to, or that you feel sounds best. Turn the volume up to just past your normal listening level. Obviously you don't want distortion here, so once you've determined your max normal listening level, increase the gain on the sub woofer amp until you hear some distortion from the sub. Drop the gain until this distortion disappears. This will be your max/optimal clean power to the sub at the given RMS voltage the deck is outputting to the amp at your normal listening level. It may not be as loud as you are looking for, I don't know, but this is a very simple way to set your gains with little knowledge/technical skill/tools. I would say that if you think the sub is not as crisp as you are looking for even after all this, time for Santy Klaus to visit your house

 

i tried setting my gains simple and still the amp power light shuts off then comes back on after the bass hit....i don't know could it be a problem in the amp??