Stupid Stereo - Aussie V8 | Holden - Ford

hsvtj · 04-03-2007, 10:42 PM

hey guys, wonder if you can help me out with this one, coz it has me stumped..

just recently i put in an amp and subwoofer to my VB commodore. Everything went fine, it works and sounds great. In the last couple of weeks i have noticed that the subwoofer cuts in and out. It will cut out when i put my foot down on the accel pedal, and when i slow down again, it comes back..if im cruising along and high speed for long enough, it will come back again.. i drive a lot and if i have been driving that car around for a while, it stops cutting in and out.

I have checked the connections, its not a loose connection, so its got me stuffed what is going on.

Any Ideas???

Street 308 · 06-03-2007, 04:49 PM

how big an amp and sub you got, i had the same problem because the little altenator in the early 6cyl commodores does stuff all! i ended up using a 125 amp vr v8 altenator and when i was testing the 2 15inch subs out in the shop the stereo was twice as loud as before at its best and the head lights were twice as bright 2 scared the hell out of the asians in the shop getting a new battery lol! or the battery might be old and not keeping that bit you need for the stereo to run flat out but the car still will start! i still think it would be the altenator, turn the steroe up and check how many amps the altenator is charging at should be around 14

ferret · 06-03-2007, 05:03 PM

since it cuts out when ya put ya foot down it must be moving. does it just go silent or does it crackle and make all sorts of noises. There may be a wire inside the sub box that is loose. turn the tunes on and shake ya sub then shake the amp if that doesn't show where the problem is you've got me stumped too. unless ya battery is loose. try wiggle the battery leads. an intermittent fault like that is 90% a loose connection somewhere.

FryzesBT1 · 06-03-2007, 05:42 PM

Quote:

Originally Posted by Street 308

how big an amp and sub you got, i had the same problem because the little altenator in the early 6cyl commodores does stuff all! i ended up using a 125 amp vr v8 altenator and when i was testing the 2 15inch subs out in the shop the stereo was twice as loud as before at its best and the head lights were twice as bright 2 scared the hell out of the asians in the shop getting a new battery lol! or the battery might be old and not keeping that bit you need for the stereo to run flat out but the car still will start! i still think it would be the altenator, turn the steroe up and check how many amps the altenator is charging at should be around 14

had the same problem with my vn i ended up putting a vr v8 alt aswell and i bought one of them truck batterys or somethin and everything worked perfecto after that

paterson02 · 06-03-2007, 07:54 PM

simaler in my vh but it was just the screw terminal on the sub box came lose. you will need to do as ferret suggested or try friends equpiment and see if its the amp or the sub themself

Vs_355 · 06-03-2007, 08:50 PM

mabey earth is faulty..???

hsvtj · 06-03-2007, 09:39 PM

well, im almost 110% sure its not something loose, coz today i had it in the driveway, and i put my foot down, in park and it still cuts out. It cuts out, dead to nothing, no crackle or noise, just no sub at all, the rest of the stero still works, and then it comes back the same.

its not a big setup at all, one small sub, and small amp

i was thinking the alternator, is it any trouble getting the VR/S V8 one on??

that might be worth a go, as well as a new battery, it must be a power issue i think

and also, the earth maybe no good, are you talking about the batter earth or the sub earth??

ferret · 07-03-2007, 09:40 AM

definately an odd one mate. Get someone else to stomp on the acc pedal while you look at the amp and see if there is an overload light. ya may be putting to high of a voltage in it, could be ya voltage regulator. If not give the altinator a go but I'd try the cheap stuff 1st.

hsvtj · 07-03-2007, 04:25 PM

yeah i will try that now, and if not, ill look into a battery and newer alt for it

thanks guys

P.S, if anyone can tell me if there is any real issues with getting the VR alt in, that would be appreciated as well.

Street 308 · 09-03-2007, 06:10 PM

the altenator i ran cost me $450 with labour and a few dash lights replaced altenator was around $350, after getting this done on the friday my car got stolen the monday in perth at the carpark next to river side drive inbetween 7 and 10 in the morn! was 17 and it was the biggest kick in the guts and the vr alt was a direct replacement hsv

JA5ONS · 10-03-2007, 03:44 PM

Same bloody thing with my brothers VR Commy, today we want down to the motorshow, we were driving round town for a bit, gettin petrol and bank ect.. and the two rear speakers were doing the same thing, they are powerd by a 4ch pioneer amp, the other two chanels are on the subs and they are fine. abut anyhow, by the time we got 15k down the highway the speakers were right again. stupid as!

paterson02 · 13-03-2007, 06:34 PM

signal wire to the amp is it shorting out against anything that may move?

hsvtj · 14-03-2007, 10:39 PM

Quote:

Originally Posted by paterson02

signal wire to the amp is it shorting out against anything that may move?

well, i had thought about these sort of things, and i could very easily be wrong, but i cant find anything like that, and it still happens when im in the driveway, not moving.. only when the car is being revved. and if i am moving and i put my foot on the brakes, it comes back on...but its not heavy stopping or going, it can be cruising up the st at 50Km/hr

hsvtj · 20-03-2007, 09:30 AM

ok, i think i may have found pieces to this puzzle.

today (its raining in melbourne) i had the wipers on, and when i was on the accel pedal, the wipers would go faster, the times at which they would change speed are the same as the moments when the subwoofer would die (i have it turned down now coz its so annoying)

i also noticed very softly, the battery light is coming on. oh and the other night my headlights died out, but i dont know if that has anything to do with it, its probably just a fuse or something

so im wondering if maybe there is a connection between all this, its almost like there is too much power to the amp, or maybe the battery or alt is just stuffed

ferret · 20-03-2007, 09:43 AM

in theory (wich is not alwayse correct) when your battery starts to die it sulphates wich increases it's internal resistance. This should increase the current flow from the altinator to the battery but if the battery cannot accept the extra current then it will dicipate thru the cars circuit hence giving the faster wiper speed.

since P=V/I, P being power, V being voltage and I being current. The "power" of your altinator is constant so as the current increases the voltage must drop.

put a multimeter across your battery and see if the voltage drops. if it does you need a new battery. the voltage drop also explains ya sub dropping out.

that's way too bloody technical for this time of morning.

hope it helps. If I'm right 6 pack of bundy's to me

04-03-2007, 10:42 PM	#1 (permalink)
hsvtj casual poster Trade Rating: (0) Join Date: Feb 2006 Location: Berwick Ride: VK Berlina Wagon, EFI 6 Posts: 60	Stupid Stereo hey guys, wonder if you can help me out with this one, coz it has me stumped.. just recently i put in an amp and subwoofer to my VB commodore. Everything went fine, it works and sounds great. In the last couple of weeks i have noticed that the subwoofer cuts in and out. It will cut out when i put my foot down on the accel pedal, and when i slow down again, it comes back..if im cruising along and high speed for long enough, it will come back again.. i drive a lot and if i have been driving that car around for a while, it stops cutting in and out. I have checked the connections, its not a loose connection, so its got me stuffed what is going on. Any Ideas??? __________________ ___________________________________ ******************************* has anyone got a 202 for rebuilding.. i wants one

06-03-2007, 04:49 PM	#2 (permalink)
Street 308 casual poster Trade Rating: (0) Join Date: Jan 2007 Location: Perth Ride: 1989 Navara, 1986 VL Berlina, 1983 VH SLE 308 Posts: 212	how big an amp and sub you got, i had the same problem because the little altenator in the early 6cyl commodores does stuff all! i ended up using a 125 amp vr v8 altenator and when i was testing the 2 15inch subs out in the shop the stereo was twice as loud as before at its best and the head lights were twice as bright 2 scared the hell out of the asians in the shop getting a new battery lol! or the battery might be old and not keeping that bit you need for the stereo to run flat out but the car still will start! i still think it would be the altenator, turn the steroe up and check how many amps the altenator is charging at should be around 14 __________________ http://i32.tinypic.com/11hqb92.jpg

06-03-2007, 05:03 PM	#3 (permalink)
ferret if in doubt go flat out Trade Rating: (0) Join Date: Jul 2006 Location: townsville QLD Ride: husaberg FE400e, '91MX6GT, V8 gemini, CBR 250R, Posts: 781	since it cuts out when ya put ya foot down it must be moving. does it just go silent or does it crackle and make all sorts of noises. There may be a wire inside the sub box that is loose. turn the tunes on and shake ya sub then shake the amp if that doesn't show where the problem is you've got me stumped too. unless ya battery is loose. try wiggle the battery leads. an intermittent fault like that is 90% a loose connection somewhere. __________________ I'm looking for a 308 red block, please PM me if you know of one. 40 thou over is still good but please no complete donks. http://i229.photobucket.com/albums/e...erret/sig1.jpg

06-03-2007, 08:50 PM	#6 (permalink)
Vs_355 casualy sideways Trade Rating: (0) Join Date: Jul 2005 Location: mandurah Ride: a reconisable statesman Posts: 211	mabey earth is faulty..??? __________________ i like my injection, but i prefer 2 be blown

06-03-2007, 09:39 PM	#7 (permalink)
hsvtj casual poster Trade Rating: (0) Join Date: Feb 2006 Location: Berwick Ride: VK Berlina Wagon, EFI 6 Posts: 60	well, im almost 110% sure its not something loose, coz today i had it in the driveway, and i put my foot down, in park and it still cuts out. It cuts out, dead to nothing, no crackle or noise, just no sub at all, the rest of the stero still works, and then it comes back the same. its not a big setup at all, one small sub, and small amp i was thinking the alternator, is it any trouble getting the VR/S V8 one on?? that might be worth a go, as well as a new battery, it must be a power issue i think and also, the earth maybe no good, are you talking about the batter earth or the sub earth?? __________________ ___________________________________ ******************************* has anyone got a 202 for rebuilding.. i wants one

06-03-2007, 07:54 PM	#5 (permalink)
paterson02 Into it all Trade Rating: (0) Join Date: Aug 2006 Location: Frankston Ride: VX Senator Signature Series One Posts: 197	simaler in my vh but it was just the screw terminal on the sub box came lose. you will need to do as ferret suggested or try friends equpiment and see if its the amp or the sub themself

07-03-2007, 09:40 AM	#8 (permalink)
ferret if in doubt go flat out Trade Rating: (0) Join Date: Jul 2006 Location: townsville QLD Ride: husaberg FE400e, '91MX6GT, V8 gemini, CBR 250R, Posts: 781	definately an odd one mate. Get someone else to stomp on the acc pedal while you look at the amp and see if there is an overload light. ya may be putting to high of a voltage in it, could be ya voltage regulator. If not give the altinator a go but I'd try the cheap stuff 1st. __________________ I'm looking for a 308 red block, please PM me if you know of one. 40 thou over is still good but please no complete donks. http://i229.photobucket.com/albums/e...erret/sig1.jpg

07-03-2007, 04:25 PM	#9 (permalink)
hsvtj casual poster Trade Rating: (0) Join Date: Feb 2006 Location: Berwick Ride: VK Berlina Wagon, EFI 6 Posts: 60	yeah i will try that now, and if not, ill look into a battery and newer alt for it thanks guys P.S, if anyone can tell me if there is any real issues with getting the VR alt in, that would be appreciated as well. __________________ ___________________________________ ******************************* has anyone got a 202 for rebuilding.. i wants one

09-03-2007, 06:10 PM	#10 (permalink)
Street 308 casual poster Trade Rating: (0) Join Date: Jan 2007 Location: Perth Ride: 1989 Navara, 1986 VL Berlina, 1983 VH SLE 308 Posts: 212	the altenator i ran cost me $450 with labour and a few dash lights replaced altenator was around $350, after getting this done on the friday my car got stolen the monday in perth at the carpark next to river side drive inbetween 7 and 10 in the morn! was 17 and it was the biggest kick in the guts and the vr alt was a direct replacement hsv __________________ http://i32.tinypic.com/11hqb92.jpg Last edited by Street 308; 09-03-2007 at 06:14 PM.

10-03-2007, 03:44 PM	#11 (permalink)
JA5ONS Year 12 Graduated :) Trade Rating: (1) Join Date: Feb 2007 Location: Traralgon (Glengarry), Eastern Victoria. Ride: VS Ute Posts: 2,627	Same bloody thing with my brothers VR Commy, today we want down to the motorshow, we were driving round town for a bit, gettin petrol and bank ect.. and the two rear speakers were doing the same thing, they are powerd by a 4ch pioneer amp, the other two chanels are on the subs and they are fine. abut anyhow, by the time we got 15k down the highway the speakers were right again. stupid as! __________________ Bundy & Coke, now cheaper than petrol: drink, don't drive.

13-03-2007, 06:34 PM	#12 (permalink)
paterson02 Into it all Trade Rating: (0) Join Date: Aug 2006 Location: Frankston Ride: VX Senator Signature Series One Posts: 197	signal wire to the amp is it shorting out against anything that may move?

20-03-2007, 09:30 AM	#14 (permalink)
hsvtj casual poster Trade Rating: (0) Join Date: Feb 2006 Location: Berwick Ride: VK Berlina Wagon, EFI 6 Posts: 60	ok, i think i may have found pieces to this puzzle. today (its raining in melbourne) i had the wipers on, and when i was on the accel pedal, the wipers would go faster, the times at which they would change speed are the same as the moments when the subwoofer would die (i have it turned down now coz its so annoying) i also noticed very softly, the battery light is coming on. oh and the other night my headlights died out, but i dont know if that has anything to do with it, its probably just a fuse or something so im wondering if maybe there is a connection between all this, its almost like there is too much power to the amp, or maybe the battery or alt is just stuffed __________________ ___________________________________ ******************************* has anyone got a 202 for rebuilding.. i wants one

20-03-2007, 09:43 AM	#15 (permalink)
ferret if in doubt go flat out Trade Rating: (0) Join Date: Jul 2006 Location: townsville QLD Ride: husaberg FE400e, '91MX6GT, V8 gemini, CBR 250R, Posts: 781	in theory (wich is not alwayse correct) when your battery starts to die it sulphates wich increases it's internal resistance. This should increase the current flow from the altinator to the battery but if the battery cannot accept the extra current then it will dicipate thru the cars circuit hence giving the faster wiper speed. since P=V/I, P being power, V being voltage and I being current. The "power" of your altinator is constant so as the current increases the voltage must drop. put a multimeter across your battery and see if the voltage drops. if it does you need a new battery. the voltage drop also explains ya sub dropping out. that's way too bloody technical for this time of morning. hope it helps. If I'm right 6 pack of bundy's to me __________________ I'm looking for a 308 red block, please PM me if you know of one. 40 thou over is still good but please no complete donks. http://i229.photobucket.com/albums/e...erret/sig1.jpg

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