help PLEASE!!
Ok, I do not know what is going on anymore with my system. Fist, here's what I got:
2x Alpine 350w RMS amps
2x Alpine Type R subs (2004)
Alpine Type R 6x9's
Alpine Type R 5 1/4's
Alpine Tweets
Alpine CDA-9831 Deck
140 Amp Alternator
Optima Red Top Battery
4 Gauge Wire going from my battery to my alternator.
Pontiac Sunfire (1996/2dr)
Now, the problem is when it POUNDS and I mean hits really high deep bass it likes to reset. I have to keep the equalizer on flat, and cannot turn the volume past 18/19 on the deck. If I put it on "Hip-Hop", it will reset when the colume gets to 14/15/16... For some reason, the deck resets when I turn it up and bass notes hit..
I've done EVERYTHING and it still does it.. help! PLEASE! Thank you..
[ July 03, 2005, 11:38 PM: Message edited by: iNEEDsubs ]
2x Alpine 350w RMS amps
2x Alpine Type R subs (2004)
Alpine Type R 6x9's
Alpine Type R 5 1/4's
Alpine Tweets
Alpine CDA-9831 Deck
140 Amp Alternator
Optima Red Top Battery
4 Gauge Wire going from my battery to my alternator.
Pontiac Sunfire (1996/2dr)
Now, the problem is when it POUNDS and I mean hits really high deep bass it likes to reset. I have to keep the equalizer on flat, and cannot turn the volume past 18/19 on the deck. If I put it on "Hip-Hop", it will reset when the colume gets to 14/15/16... For some reason, the deck resets when I turn it up and bass notes hit..
I've done EVERYTHING and it still does it.. help! PLEASE! Thank you..
[ July 03, 2005, 11:38 PM: Message edited by: iNEEDsubs ]
If you are running 2 alpine amps, do you have two seperate power wires running to each? if so, you may want to look into a dblock. (doubt you have 2 seperate power wires though..)
Check all your wiring, may be a short somewhere (likely on the amp if the bass cuts out).
Thats all i can think of right now, i will think more and let you know what i come up with.
[ July 04, 2005, 12:31 AM: Message edited by: pgmaniac ]
Check all your wiring, may be a short somewhere (likely on the amp if the bass cuts out).
Thats all i can think of right now, i will think more and let you know what i come up with.
[ July 04, 2005, 12:31 AM: Message edited by: pgmaniac ]
1000 Watt CAFz'r
Joined: Sep 2001
Posts: 1,120
When you say you've done everything what do you mean???
How old is your car.....sounds like a low voltage at the deck, how is your deck wired???
Is it wired to the fuse box or stock wiring or directly to the battery with upgraded wiring...you know if you go through your Alpine manual it will tell you to upgrade the wiring & wire the deck directly to battery with heavier guage wire...is yours done this way??
Another thing to check would be your
bigger wiring if your car is older and connection corrosion might be an issue. It is known as the "Big Three" : 1). Upgrade the Ground wire from engine block to frame 2.) Upgrade the Ground wire from battery to body or frame 3). Upgrade the Charging (+) wire from alternator to positive battery terminal.
The Red series Optima is not designed to be run flat and re-cycled like a yellow top or a deep-cycle battery... so do tell have you ru the battery flat on multiple occasions which may caue it to have some charging problems?
If you can answer these diligently it'll help us pin down your problem.. [img]smile.gif[/img]
How old is your car.....sounds like a low voltage at the deck, how is your deck wired???
Is it wired to the fuse box or stock wiring or directly to the battery with upgraded wiring...you know if you go through your Alpine manual it will tell you to upgrade the wiring & wire the deck directly to battery with heavier guage wire...is yours done this way??
Another thing to check would be your
bigger wiring if your car is older and connection corrosion might be an issue. It is known as the "Big Three" : 1). Upgrade the Ground wire from engine block to frame 2.) Upgrade the Ground wire from battery to body or frame 3). Upgrade the Charging (+) wire from alternator to positive battery terminal.
The Red series Optima is not designed to be run flat and re-cycled like a yellow top or a deep-cycle battery... so do tell have you ru the battery flat on multiple occasions which may caue it to have some charging problems?
If you can answer these diligently it'll help us pin down your problem.. [img]smile.gif[/img]
Originally posted by islandphile:
sounds like a low voltage at the deck
sounds like a low voltage at the deck
When you pound it hard, your car voltage goes down and probably quicker than your car can replenish itself.
And when you say it resets, is it just your deck? or do your amps shut off too? Have you tested voltage with a multimeter to see what voltage readings you get when things shut off?
[ July 04, 2005, 08:49 AM: Message edited by: ChinaMan ]
Originally posted by ChinaMan:
</font><blockquote>quote:</font><hr />Originally posted by islandphile:
sounds like a low voltage at the deck
</font><blockquote>quote:</font><hr />Originally posted by islandphile:
sounds like a low voltage at the deck
When you pound it hard, your car voltage goes down and probably quicker than your car can replenish itself.
And when you say it resets, is it just your deck? or do your amps shut off too? Have you tested voltage with a multimeter to see what voltage readings you get when things shut off? </font>[/QUOTE]Just the deck that resets... The alternator is reading 14.5 + volts. Nothing to do with the wiring or the battery. I believe it's a deck issue. It may be wired up in the wrong spot. I'm sure the deck is NOT going directly to my battery... I'll check it out. Thanks guys.
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Sounds like you had the same problem I had with my sister's cavalier. Though I can't explain WHY it happened, I can go through what DID happen.
He car has one Alpine 600w amp for her sub (MRV-1005), one for her components (same amp) and an Alpine deck (about 2 years old, can't remember the model, looks similar to my CDA-7977 though).
One day the deck started outright turning off and resetting all the internal crap. We thought it might be a voltage problem so we hooked up my oscilloscope to see if the voltage dropped too far (I think 10v was the threshold for the headunit to outright turn off). Well, car voltage held at about 13.3v minimum when measuring from the chassis to the factory power dist point in the car. Trying again, I measured from the headunit power wire on the car side of the harness ... it was like 13.2v or something. So, then I measured from the ALPINE side of the harness and it was in the 11v area. Still good enough to run the deck but was a problem so we rewired it. After rewiring, the headunit was always running at approximately battery voltage (maybe 0.1v below or something, probably even less than that).
Now, that actually didn't fix the freakin problem, but it did stop the headunit from resetting the presets. What hhapened AFTER that was the outputs on the headunit were turning off, which was an unforseen problem. Well, I decided to check all the power cabling for voltage drops with my scope again. Noticed that, as luck would have it, two amps (grounded to the same spot in the trunk) did not have the same voltage drop across the ground wire. Both amps had about a 0.2v drop on the main power wire but the COMPONENT amp had a 1v drop on the ground vs alomost zero on the SUB amp. So, after adding a ground distro, grounding THAT to the frame, the problem went away.
So, it seems, the resetting problem MIGHT have had something to do with differing grounds coming through the signal cables vs. the frame of the car as well as a low voltage @ the headunit. Depending on how that alpine handles its differing grounds, the combination of the bad amp ground with the bad power situation @ the head.
He car has one Alpine 600w amp for her sub (MRV-1005), one for her components (same amp) and an Alpine deck (about 2 years old, can't remember the model, looks similar to my CDA-7977 though).
One day the deck started outright turning off and resetting all the internal crap. We thought it might be a voltage problem so we hooked up my oscilloscope to see if the voltage dropped too far (I think 10v was the threshold for the headunit to outright turn off). Well, car voltage held at about 13.3v minimum when measuring from the chassis to the factory power dist point in the car. Trying again, I measured from the headunit power wire on the car side of the harness ... it was like 13.2v or something. So, then I measured from the ALPINE side of the harness and it was in the 11v area. Still good enough to run the deck but was a problem so we rewired it. After rewiring, the headunit was always running at approximately battery voltage (maybe 0.1v below or something, probably even less than that).
Now, that actually didn't fix the freakin problem, but it did stop the headunit from resetting the presets. What hhapened AFTER that was the outputs on the headunit were turning off, which was an unforseen problem. Well, I decided to check all the power cabling for voltage drops with my scope again. Noticed that, as luck would have it, two amps (grounded to the same spot in the trunk) did not have the same voltage drop across the ground wire. Both amps had about a 0.2v drop on the main power wire but the COMPONENT amp had a 1v drop on the ground vs alomost zero on the SUB amp. So, after adding a ground distro, grounding THAT to the frame, the problem went away.
So, it seems, the resetting problem MIGHT have had something to do with differing grounds coming through the signal cables vs. the frame of the car as well as a low voltage @ the headunit. Depending on how that alpine handles its differing grounds, the combination of the bad amp ground with the bad power situation @ the head.
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