laosboi504

I have a jl audio hd750/1 hooked up to 2 12 jl audio w6s with a 5 farad capacitor and 2 gauge wires with a 100 anl fuse. Everytime i turn it up to high volume, its like the amp turns off(not sure) cause when the bass suppose to hit hard in the song, i don't hear nothing but my highs. I know jl audio amps are one of the best so i know it shouldnt be doing this. My battery is also going bad so can that be the problem? Thank ya'll for all the help!!!!!

rockstar143

iTrader: (6)

Is it overheating? Is it going into "protect" or is it just on hard deep bass it cuts out and then comes back right after?

If your battery is bad, I would venture to say it just doesn't have enough just to provide the amp when it's going to hit. That's something you need to address anyway so you should start there. Check your grounds too...just to be on the safe side. Make sure all your connections are tight...nothing shaking loose when it hits.

Pep boys has a bosch battery...1000 Cranking amps for like $95. That's what I got.

Eiswritsat

sounds like the gain might be too high, did you use a multimeter to get yours gains?

Nick337

iTrader: (2)

check to see if that isn't melted, 100 amp is very small.

laosboi504

roccstar143, I don't think it's overheating because it doesn't even be on for a long time plus it will only cut off for a second are two when the bass hits deep at a high volume.
Eiswritsat, i don't think the gain is too high because i have it up around 75% but i didn't use a multimeter so not sure.
Nicc337 , i read the owners manual and it said to use a 60 amp fuse for it but idk tho.
I think it's the battery because the piece of **** died on me tonight!!! lol! I'm getting a new battery tomorrow so I'll see if it's the battery. Thank ya'll for the help! If it's not the battery, I'll be bacc here! I'm open for any suggestions.

princelybug

iTrader: (16)

+1.

I still think it could be the gain. Each manufacturer has a specific way to set the gains on their amps. I don't know what the method is exactly for JL's, but I'm sure a call to CS would solve that quickly. Arbitrarily setting the gains @ ~75% doesn't mean you are in the clear as far as adjustments.

Trew

iTrader: (1)

Has it ever worked right?
How are your speakers wired? What's the total impedance?

1. That amp is not enough power for those subs. w6's will handle almost 1200 watts at their sweet spot.

2. Turn your gain to about 2/3 from max. It definitely sounds like your gains may be too high.

3. Make sure your ground wires have good contact. When the bass hits, it needs more power. If your ground is not strong, the amp will cut out.

CSWBiggs

take multimeter and check the voltage at the amp...

the hd's shut off once the input voltage falls below the 10.5 volt threshold...

-Jason

laosboi504

princely bug, trew, cswbiggs, thank ya'll for the help. I got a new batt so that wasn't it. I believe it's the amp cause a couple times after I put the new batt in, when it was on really high volume, the amp cut off and didn't come bacc on til i turned off the car and turned it bacc on. i hope it is the ground or the gain and where can I get a multimeter? I looked at the amp when the woofers stopped sounding and the amp's light was still on. If I lower the gain, it's going to sound really low. If ya'll have any answers, please help cause I'm open for anything. Thank you all for the help.

laosboi504

sorry, when i said amp cut off, i meant the sound because as i stated, the light was still on.

CSWBiggs

go to sears and buy a digital multimeter...

_jason

Eiswritsat

proper gain setting might not always sound louder to the ear but it will ensure proper overall sound quality and increase the life span of your equipment. if you go with a more efficient enclosure you will not have to have the gain up so high in the first place, like a 4th order bandpass or large low tuned ported enclosure and still have the out put you will like

laosboi504

Thanks. I'm going to look into the gain but can a capacitor cause the problem too? The reason why I'm asking is because i have a 5 farad tsunami cap that reads the volts and amperage. The volts reads between 11 to 14, but the amperage stays on zero. Sorry for asking so many questions but i keep finding new stuff. The capacitor is used and had the amp wires yanked out of it before due to my other system getting jacced. I'm just hoping it's not the amp. Thank you all for the help.

CSWBiggs

step one...toss cap in trash...

step two...place digital mulitmeter on amplifier power terminals...

step three...what kind of fuse holder do you have under the hood?

-Jason

laosboi504

I'm guessin the cap is bad so I'ma trash it. I'm gonna look into gettin a multimeter and i have a 100 amp anl fuse for the jl audio 750/1 hd and a kenwood 600 max amp.

eddiebeltoe

its ur ground try and see if you can get another spot for the ground happened to me in many occasions hope this helps

laosboi504

Thanks! I'ma try messing with the gain first, then the ground. If it still does that or it's too low, I'ma sell it and upgrade to the jl audio 1000/1. Thank you all for the help!

DiamondJoeQuimby

iTrader: (2)

if you are having problems like this w/ a 750/1 a 1000/1 is not the answer. That thing will obliterate a charging system if not set up properly.

Has anyone mentioned a multi-meter? I'd look into one of those. They are probably the single most useful tool for doing anything w/ a car's electrical system.

btw, here:

8Ω 54.8 V
6Ω 54.8 V
4Ω 54.8 V
3Ω 47.4 V
2Ω 38.7 V
1.5Ω 33.5 V

output voltages for the speakers to be connected to a HD750/1. You will need a CD w/ a 50Hz(ish) test tone and a multi meter. set your h/u volume ~3/4 then play the tone, then adjust gain until proper voltage is reached. Set your gains this way. All of this is in the manual BTW...amazing what manufacturers who don't want you to blow up their product will put in the manual.

and to whoever said 100A is not very much...seriously?! 1) JL recommends a 60A fuse for that amp. 2) you have any concept of current? 100A is a shit ton of current.

laosboi504

Thank you very much!!!!! All the answers have been very helpful but this is the most helpful one! As far as the fuse goes, I figured the 100a was good enough because like you and the manual said, it recommends the 60a and the kenwood 600 max recommends a 40a! 40+60=100! Hahahahahaahahhaha! I looked on the sears website and i seen multimeters ranging from 20 to 200+ dollars! What kind, with what features or wires should I get? I'm new to the multimeter thing. I been through sound for 5+ years and never had this problem. Thank you all once again for all the help!

Eiswritsat

no need to go out and buy a $200 fluke multi meter a good $70 craftsman meter will just be good enough.

CSWBiggs

you do realize that the 1000/1 takes almost 120 amps of current to provide you the thousand watts it's designed to out put...

so y kick your charging system when it's down...

-Jason

AcUrAfIeNd32

this is a problem for any vehicle..basically ur amp might not be strong enough or might be a bad amp sry to say, i had similiar the same situation and it was because the amp was weak and if thats happening u might wanna try a new amp cuz it will hurt ur battery

DiamondJoeQuimby

iTrader: (2)

nonsensical post is nonsensical

godizus

laosboi504

I think you are right about the amp being bad because I hooked up my 12 w6s to my cousins jl 500/1 and it pushed my 12s way, way harder than my jl 750/1 pushed it. I was hoping it wasn't the amp but i believe it is! Thanx fo the help!

CSWBiggs

ugh...

u suck at life my friend...

-Jason

rockstar143

iTrader: (6)

I belive he's getting to the fact that if you put it in a new car...that new car might not have a problem.

lars32382

I have the same exact problem with the same amp!!! I tuned it with a multimeter using a 50hz test...I am using 4 guage power and ground wire with a 80 amp fuse..I have upgraded my battery before I even got this amp...I had my charging system inspected and it's just fine!! I dont get it!!! Ugh!!!! I have tested every aspect of my system to rule everything out and everytime it points to the amp!! I don't even have any bass boost turned on my Pioneer head unit. But when I turn up the volume to 3/4 of the way..the green light blinks a couple of times, and then turns back to a solid green with absolutely NO SOUND until I turn the car off for a few minutes and then turn it back on....it DOES NOT GO INTO PROTECT MODE...and I know it can handle the impedence cause Im running my set of 12W3V3's at a 2 ohm load from the amp. According to JL's manual, when the green light blinks a couple times, that means it's "muted"??..But says nothing else why it would mute itself!! Im glad I have a warranty on this hunk of shit!! Oh, and for reference, the amp I had before this HD750/1 was a Alpine PDX 600.1 and I never had one problem with it!! Im thinking about getting a JL Audio 500/1 Slash V2 myself!! Please let me know how everything worked out for you. Thanks.

laosboi504

First off, thanx for looking. I went ahead and returned my amp and bought a jl 500/1 slash amp. It works way better but I'm not 100% satisfied because I have 2 12w6's and i know it can be louder. I think you would be very happy with the 500/1 jl amp hooked up to your 12w3's. Best of lucc and let me know how your setup works out for you.