Sudden decrease in output?

[BreakingBad]

Ok so currently im running:

stock alt (150a), chevy TB 2005

stock battery under hood

deka G31 in rear with us amps 1.5kw amp

now, even knowing this sub is underpowered and i don't necessarily have the electrical backing, this thing was pounding. youtube.com/lowhz420

anyway, all of a sudden here's what happened:

i would say, have my HU on volume 8 or 10 and there was NICE output. i would never really push past 18 or 20 on the HU being i dont want to blow the amp, distort, etc. even though the HU goes past 25 or 30.

anyway.....literally ALL of a sudden, its now where i have to have the HU on say volume 15 to acheive the output i used to have on volume 8 or 10.

can this be a sign something in the amp internally blew, or could it be the alternator failing? i've had issues with this amp before (capacitor, etc.) so its def a possibility...

i plan on replacing batt under hood with yellow top and contacting ohio gen. for a HO alternator also with possibly adding a second deka G31 battery along with getting a sundown saz-3000 to replace this amp.

my question is: does this sound more like an alternator issue or amp issue? i know you cant say for sure, but what -could- do that?

theorhetical example:

before:

volume @ 8

output: 100db

after:

volume @ 8

output: 50db

random numbers used, just to give you an idea of what happened. i checked all connections, voltage is not dropping - i can achieve the same output i normally do on say volume 15 or 20, but i have to turn it up way past that now to like 25 or higher to achieve the same effect.

any ideas?

Click to read more...

 

[IDSkoT 5,000+ posts]

Sounds like you're out of blinker fluid //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[BreakingBad]

Sounds like you're out of blinker fluid //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

An imaginary liquid used in automobiles (to make the blinkers work). This term is used as a sarcastic remark toward someone who knows absolutely nothing about cars.

hilarious.

now can people above the age of 14 reply? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[adas Pro Seller]

An imaginary liquid used in automobiles (to make the blinkers work). This term is used as a sarcastic remark toward someone who knows absolutely nothing about cars.

That is funny
Anyways, did u check to see if any rca connections came loose....maybe u were drunk last night and forgot you changed some random HU settings? alternator problems wouldnt have that effect.

 

[BreakingBad]

That is funny
Anyways, did u check to see if any rca connections came loose....maybe u were drunk last night and forgot you changed some random HU settings? alternator problems wouldnt have that effect.

i'm very meticulous when it comes to HU settings. there are 2 main sub/bass options:

Subwoofer

Bass

i normally keep bass (-7 to +7) at around +1 - +3.

subwoofer (0-15) @ about 12 or 13.

havent changed a thing.

i literally parked for the night, and the next day this occured

 

[thevic24 5,000+ posts]

are your gains real high? mabie the amp went into some kind of protection, some amps will limit power when they get hot. your amp may not have gotten hot but that part of the protection may be messing up.

 

[BreakingBad]

are your gains real high? mabie the amp went into some kind of protection, some amps will limit power when they get hot. your amp may not have gotten hot but that part of the protection may be messing up.

3/4's the way.

but the car sat overnight with 40 deg temps...even on a cold start today i still have the low output.

i'm feelin its the amp, something that may limit/control power output cold be blown or something. i dunno. i'm getting a new one in a month or two, whenever i can get the saz3000...

even if amp went into protection, why would it do it all of a sudden? i havent really BLASTED the amp at all, and when i parked everything was fine. next day is when i noticed it..

 

[thevic24 5,000+ posts]

ive seen amps in the past have the thermal sensor in them start to short and on a couple of the amps that caused a limited out put. this dosent happen too often though. also, the rca jack may have lost a ground on the board, if you have the amp bridged it would cause a decrease in output also.

 

[BreakingBad]

ive seen amps in the past have the thermal sensor in them start to short and on a couple of the amps that caused a limited out put. this dosent happen too often though. also, the rca jack may have lost a ground on the board, if you have the amp bridged it would cause a decrease in output also.

yea everything was fine until i turned car off one night, next day boom. nowhere near as much output unless i crank it until the highs distort..

 

[PaulD 10+ year member]

now can people above the age of 14 reply? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

good luck on that one ..... //content.invisioncic.com/y282845/emoticons/rotflol.gif.b453361716769b8110ddefc85ff03cd2.gif

 

[BreakingBad]

issue resolved:

RCA's were tight (connections)....but the RCA's i use (KnuK) on the connector itself actually unscrews/screws, and it was a little loose. wow. weird rca's...soon as i did that...BOOM fixed

 

[ThatChevyGuy 5,000+ posts]

might wanna lower your gains..

That could burn some tensils up

 

[thevic24 5,000+ posts]

well i was kinda of close, the outter case acts as the ground sometimes for the rca's. glad it wasnt nothin major.

 

[BreakingBad]

now comes the part of still getting a new alternator and amp //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

someone wanna buy my ax-1500? lol $400!

 

[Fear Of Theive 10+ year member]

Go to team nutz they could help.