new Alpine deck problem

Reply Subscribe

Thread Tools

Search this Thread

11-06-2006, 01:49 PM

belcom

50 Watt CAFz'r

Thread Starter

iTrader: (2)

Join Date: Sep 2006

Posts: 249

new Alpine deck problem

So I just bought a new Alpine CDA-9857. Installed everything. First time I noticed this when I was tuning my system.

Basically when using the volume **** on the deck at higher volume I sometimes I can hear a momentary loud popping noise all over my speakers. It is not distortion because when I stop using the volume know the speakers play loud and clear noise free. When I try to adjust volume again it happens again at some point. At first I thought it was the speakers but then I realized that adjusting the volume using the remote does not produce this noise.

I used the stock wire for constant power for the deck. Ground went under a dedicated bolt that is used for some other ground wire so it's definitely a very clean connection. I have triple shielded Phonocar RCA's (italian made).

Anyone have similar problems?

11-07-2006, 10:08 AM

theboy

1000 Watt CAFz'r

Join Date: Aug 2004

Posts: 1,267

Check the ground to your head-unit.....make sure its nice and clean.Even ground it to 2 points.

11-07-2006, 03:52 PM

152.5

500 Watt CAFz'r

iTrader: (1)

Join Date: Jan 2004

Posts: 570

had the same problem before and upgrading the ground on the deck fixed it all

11-07-2006, 08:10 PM

belcom

50 Watt CAFz'r

Thread Starter

iTrader: (2)

Join Date: Sep 2006

Posts: 249

Quote:

Originally Posted by 152.5

had the same problem before and upgrading the ground on the deck fixed it all

No way! Exactly the same symptom? I was going to go exchange the deck tomorrow cause I thought the **** was screwed up.

10 guage good enough? Should I run the ground from the same point where both of my amps are getting ground? or maybe straight from battery?

Should I run a 10 guage constant from the battery while I'm at it? (I am not using the internal amp of the deck. In fact it's turned off)

11-07-2006, 08:15 PM

SQ Civic

1000 Watt CAFz'r

iTrader: (3)

Join Date: May 2005

Posts: 1,185

Quote:

Originally Posted by belcom

If not using the internal amp, 12 AWG would be more than enough, with some HU's having external DC/DC converters, and if using the internal amp then I would upgrade to 10 AWG even if it's only a slight difference, but in your case I don't see a point... as far as the ground goes, 12 AWG to a good spot under the dash should be more than enough..

Mark

11-07-2006, 09:46 PM

FusionMadsen

500 Watt CAFz'r

iTrader: (4)

Join Date: Jun 2006

Posts: 883

10AWG for a deck?

Thats crazy, I use 18AWG all around my deck...

11-07-2006, 10:19 PM

SQ Civic

1000 Watt CAFz'r

iTrader: (3)

Join Date: May 2005

Posts: 1,185

^^^ if using the internal amp, you will see a difference between 18 AWG, and 10...

Mark

11-09-2006, 07:41 AM

belcom

50 Watt CAFz'r

Thread Starter

iTrader: (2)

Join Date: Sep 2006

Posts: 249

would like to inform everyone that it was not a ground or power issue. after spending many hours (took a day off work to deal with this) yesterday checking everything over and over again, installing new 10awg ground wire bolted to the back of the unit. The pop/static/screech sound was still there. So I went to the store let them listen and they tried to tell me it's distortion first, then bad RCAs, then bad something else. So anyway I told him give me the new unit and I'll install it right here. Got a new one, installed it right in the parking lot and the problem was gone. Something was up with that brain. Most likely a manufacturing defect. A bad component or something.

After much testing I determined exactly what this distorted sound was and could reproduce it. Basically when raising the volume fast using the **** or the remote it would create a loud pop/crackle/static kind of sound over all 4 speakers and after that it played nice and clean when volume is not touched.