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-   -   Sub vibrations (http://www.azht.net/forum/showthread.php?t=166439)

Chinky 02-27-2012 08:50 PM

Sub vibrations
 
I let someone change the settings on my head unit and amp and now it sounds like shit plus cuts out

I'm not sure what they changed but now one sub has vibration when there is no music playing like the gain is too high but when I turn it all the way down on the amp I still get vibration. Also the amp gives out after only 2-3 songs

Idk what they changed on the amp or deck but it's all fucked up now

Could the amp be going out?

Could it be bad RCAs? I have lower level monsters

I had none of these problems before dood touched the settings, any ideas?

Rufus 02-27-2012 09:53 PM

kill dood... turn gains down.

Was it rewired to less impedance? If so, the amp might not be stable at a lower impedance.

failedabortion 02-27-2012 10:06 PM

What's do you have for these settings? low pass filter, Bass boost, Loud, Sub level, sub normal/reverse?

What amp and what subs? Wired for how many ohms of resistance?

Chinky 02-28-2012 01:06 AM

2 L7 10's on a power bd1000 w/ a cap

Idk about wiring too much so it's just wired positive and negatives together

I tried turning the gains all the way down on the amp but I still get it not as bad but it still there in the one sub, and when the gain is all the way down it doesn't hit very hard

I believe the low pass for the sub is set at 63 and the high pass is at 125, idk how to really mess with the settings, why I let the person mess with the settings. Idk what else was changed so idk what settings are but when I was playing that's what I saw. Bass boost is at 0 loudness is off mmm I'll have to look at what else

Just doesn't make sense how everything could get so fucked up from letting this person mess with the settings and how retarded I feel that I can't fix em, nothing rewired

And I don't understand how I have this is only one sub and not the other

failedabortion 02-28-2012 06:16 AM

Is the balance centered?

Id probably set the gain around 40% and mess with the settings from there until you can get the clean sound you want.

Audio tuning can be difficult for most but just go through the settings in the manual and should be able to figure out what each do. If you were closer it'd be easier to just take a look at it in person.

Chinky 02-28-2012 07:55 AM


Nachooooosupreme 02-28-2012 08:00 AM

Specialists sell fosgate. Take it to them and I'm sure any tech there will hook you up. I used to shop there years ago and their customer service is righteous! Gl

Rufus 02-28-2012 09:25 AM

I see one channel but two subs. Do you have a fluke tester or similar to check impedance? If not take the subs out and draw how they are wired. Then give me the model number of the subs and the model number of the amplifier

Chinky 02-28-2012 10:44 AM

yea its a 1000/1

the voice coils are wired positive to positive then positive to the amp, negative is wired the same

i believe these are the subs


the amp


capacitor

Rufus 02-28-2012 04:12 PM

Knowing the sub ohm out of the box is imperative....however, JL is supposed to be same output regardless of impedance.

Chinky 02-28-2012 05:11 PM

no idea what that means ruffles! lol

i just wire wire all the plus' together and all the negatives together and call it a day

wheelguy 02-28-2012 05:28 PM

Lazy...

Chinky 02-28-2012 05:33 PM

if thats what you wanna call it

wheelguy 02-28-2012 07:33 PM

It's ok I've done worse

Rufus 02-28-2012 07:45 PM

It just means read the info on the magnet of the sub. You might have it at 1 ohm which might not be good for the amp

ek9 02-28-2012 08:25 PM

hit up specialist on speedway jason will take care of you

failedabortion 02-28-2012 09:34 PM

Could be .5 or 1ohm depending on if they're 2 or 4 ohm. Im just assuming they don't make a svc l7.

Chinky 02-29-2012 12:25 PM

now i think my amp is on its way out

get very little power to subs... like nothing close compared to what it used to be

that may have been the issue the whole time, maybe that kid messing with settings and the amp going out at the same time were just coincidence? idk

if the amp is bad would make sense the distortion in the sub from bad pre outs, the bass sounding like shit, and it cutting out

shitty part is the going rate to replace one of these is like $300 on ebay, and its the gen after this not even the same amp... sucks

gonna try and get it benched and repaired if possible, see whats going on. thanks for the help maybe, when i get back i'll make a thread asking how to wire them lol, i was taught to wire subs like this and its always worked for me

thanks again guys

Rufus 02-29-2012 12:29 PM

They can be done in series or parallel. Its usually dictated by the subs themselves against what the amp is capable of/limited by.

Chinky 02-29-2012 12:39 PM

series is + to - on each coil

parallel is + to + on each coil

right?

Rufus 02-29-2012 12:48 PM



Find out what your subs are and this will show you. If it's two ohm each and you're effectively making it a one ohm load, look at the specs for your amp.

Rufus 02-29-2012 12:51 PM

That amp is 2ohm mono at minimum. Any less and the amp cannot handle it. Reducing ohms reduces impedance (actually doubles it)and allows more "activity" on the circuit. That amp might be seeing 1 ohm mono. We just need to know what ohm the subs are.

Chinky 02-29-2012 02:17 PM

^ thats not the same amp i have

mine the gen before that one, does that make a difference?

i have to pull the sub out of the box to to find out right? i'll do that tonight, im just gonna pull the whole thing out of my car tonight since nothings even working anyway

failedabortion 02-29-2012 04:54 PM

They're most likely dvc so if he did parallel/parallel could be 1/2 ohm for 2ohm l7's or 1ohm for 4ohm. Or series/parallel would be 2ohm for 2ohm l7's 4ohm for 4ohmthe l7's. Don't know anyone that would wire all four coils in series for 8 or 16ohm's.

Chinky which way are yours wired from this link?

Chinky 02-29-2012 06:50 PM


Rufus 02-29-2012 07:46 PM

Ok so BEST case you're running a 1ohm load UNLESS you have 8 ohm subs, which I doubt. Overall, I don't think your amp is rated stable for 1 ohm. I'd rewire it and go from there.


98dc2 03-01-2012 12:18 AM

hit me up buddy, im pretty good with systems ill come look at it

Chinky 03-03-2012 01:22 PM

finally cracked them open they are 2ohm

failedabortion 03-03-2012 11:10 PM

so it was at .5 an ohm...lol how high was the gain before you turned it down?

rewire them to option #2 in this link that I posted above


If you decide to just replace the amp here is a decent replacement

bumpstick 03-04-2012 01:31 AM

wut? this makes no sense...


Sent from the future.


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