Question about Qwestar QCCD390 CD Player

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Installation manual 1. may I connect a Rave .MP to the RCA cable. 2. ievn I turn off the engine i still hear a noise like a motor turning in my QWESTAR QCCD390 CD Player, why, this discharge the car battery.

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Posted on Nov 28, 2007

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Have you tried a line noise filter? such as these

hope this helps
thanks for rating

Jan 14, 2008 | Car Audio Receivers

1 Answer

I urgently need a Clarion cd1500r installation manual or wirng color codes

Hello, here is Clarions wire codes.
FRONT Right SPKR: +Gray -Gray/Blk,
FRONT Left SPKR: +White -White/Blk,
REAR Right SPKR: +Purple -Purple/Blk,
REAR Left SPKR: +Green -Green/Blk

Brown Wire = Phone Mute Lead (If applicable)
Yellow Wire = 12V battery lead in (Connect directly to battery)
Red Wire = 12V Ignition wire (Connect to Acc switch)
Blue/White Wire = Amp turn on lead
Black Wire = Chassis Ground
Orange/White Wire = Illumination Lead (Connect to dimmer switch)
Blue Wire = Auto Antenna Lead (lowers power antenna Do not use for Amp Turn on! Use the Blue/White Wire for Amp,EQ, Ect.. turn on wire only

RCA Connectors if applicable:

Black RCA Harness:
White RCA = Rear Audio Left Sub Output 1
Red RCA = Rear Audio Right Sub Output 2

Gray RCA Harness:
White RCA = Front Left Audio Out to amp
Red RCA = Front Right Audio Out to amp

Oct 19, 2010 | Clarion Car Audio Receivers

1 Answer

How can i test my rca output jacks with a test light? pioneer deh p3100ub. hooked up spkr, nothing. tried one rca plug to white(lt) and then red(rt). Unit has 4 rca jacks, 2 for subwfr and 2 for front...

:) the rca jacks have to be connected to an amplifier,, their signal is too lay to even light a bulb.. you have to connect it to a car amplifier and then from the amplifier to the speakers..

Just so you'd know,, once your deck plays and you hear music on your speakers through your normal speaker wires,, RCA jacks work..

Ok you have 4 jacks,, 2 subs and 2 front.. These should connect to a preamp,, which takes 4 inputs and allows you to equalize or adjust how the music should sound,, now from the pre-amp,, it runs to an amplifier,, thats powers the subs and another that powers the speakers.. Some amps have 4 inputs so you can use one amp for your subs mids and heights..

for example a basic music system is

1 cd player
1 pre amp
1 amplifier (4 inputs, 4 channel out)

you bridge 1+2 and connect this to 1 12" double coil sub woofer

the next 2 connect to 2 mid speakers example "rockford or ev 5 / 8 " and 2 tweeters for heights..

Thats a kicking tricked out basic car audio system,,,

Hope that helps you understand how it works..

Mar 12, 2010 | Pioneer DEH P3100UB Car CD/ MP3 Player

2 Answers

Haveing trouble hearing sound when I have my IPod connected

You need a AI Net cable or Speed Cable... It plugs into the back of the radio (looks like a circle with holes), and the other end can have a "Y" plug (headphone jack and iPod flat jack). The headphone jack for sound, the flat jack to charge he iPod while listening. I just bought mine on for $29.99. With the discount code: 3A156 you can get standard shipping free. The item # is: 127ICALPA and it's named "PAC iPod Adapter for Alpine".

Mar 14, 2009 | Alpine CDA-9833 CD Player

3 Answers

Subwoofer makes a loud bass machine gun noise when powered up

Well, I have the same problem and I would think it has something to do with the RCA-connections. If I power up my head unit while I have my main fuse for the amp's removed and then replace the fuse as the head unit is already playing music (thus putting out a current through the RCA-connections) it works just fine. But if I just power up my stereo with the fuse in, my subs go all crazy. I guess it has something to do with disruptions in the rca cable. Maybe they are drawn too close to some power cables or speaker cables? Good luck!

Feb 12, 2009 | Alpine IDA-X300 Car CD/ MP3 Player

1 Answer

Pioneer DEH-P2900MP head unit

There is no power from the rca jacks. Option 1; connect the speaker wires directly. Any aftermarket auto manual (Hayes, Clymer) with wiring schematics will let you know what wire is what in the dash. Option 2; RCA jacks output to an amplifier. There is no power coming from the RCA jacks. They have to be used with the amp. If you chose to use the normal speaker wires, be aware that these radios do not like stock speakers or wire. If you take the time and money to replace all of it, the head unit will last much longer. If you choose to use an amplifier, it will burn out fast unless you replace the speakers and wires immediately.

Mar 04, 2008 | Pioneer DEH-P2900MP CD Receiver...

2 Answers

Loud engine noise through speakers

Jadrian - I purchased a DEH-P780MP and have the exact same sound. My suond however increases in pitch throughout the RPM range and is audible when operating the headunit on ACC. I have found this problem to being typical in Checy Sports cars since I can swap this head unit out from my camaro SS into my Mustang Saleen and the sound disappears. The same is true for a swap into my SUV. Never quite figured it out! I think the 12V line from the fusebox or from the battery itself doesn't have "clean" power.

Oct 08, 2007 | Pioneer DEH-P780MP CD Player

1 Answer


if you get a buzz or whine noise that changes on acceleration of the engine,,, for some reason your amp is picking up alternator "noise" the most common cause of this is a corroded/dirty/non bare metal/poor ground connection to the cars chassis form your amp.. recheck your connections and make sure! Another trick is to run the rca cables on the opposite side of the car as the power wire. Also if your rcas have a small wire in the center DO NOT USE IT FOR A REMOTE WIRE!!! it is meant to be grounded on both ends to eliminate noise. Also p.a.c.(pacific accessory corporation) makes a noise filter you can put inline betwen your rca cables and the amp. I have had some sccess with that..

Aug 22, 2007 | iLO XM-MP3-CD Car Stereo

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