Question about Blaupunkt PCA250 Car Audio Amplifier

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Factory stereo hookup

I need help connecting my clarion amp and sub to my factory eurovox stereo for my holden commodore vx i have connected a line level converter and connected it to the rear speakers but when its working it doesnt produce much bass but when you you remove one of the rca cables it gets louder

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The wires are crossed

Posted on Dec 01, 2008

  • Bryan Howald Dec 01, 2008

    the wires are crossed

  • Bryan Howald Dec 01, 2008

    the wires are crossed

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I installed the amp and the light is on but no sound from speakers. i've checked everything i can think of. any other ideas?


There are several things that you can check for this issue:

Check that the remote turn on wire is connected.
Check that the RCAs from the stereo are connected at both the amp and the sub output of the stereo.
Check the stereo; some head units have settings for the sub output. You made need to set the sub output to "on" at the stereo.
If your subs/speakers are in a box, check the connections there.

Nov 16, 2010 | Alpine MRP-F250 Car Audio Amplifier

1 Answer

My amp has power but then immediately goes red into protect mode.


Ok, being an old-school "back yard" installer when i began, gave me 2 immediate possible diagnosis for your problem. I was running a Kicker zx550.3 amp to 2 Polk DB 12'inch Subs rated 600w max 1500w. I also used a LOC converter (Line Output Converter) in order to use my stock Bose stereo since it did not have RCA outputs. Now shortly after running this setup (approx 2 weeks) I noticed a substantial drop in sound output and also noticed some ground noise/distortion coming thru the subs. After tracing my wires that connected my LOC to the Amp, and Rear Speaker Wires of my Radio to the LOC, I noticed that by jostling the wires there was a connection issue. If you are using your factory radio to power your regular component speakers (tweeters, coax, mids) then chances are your stereo feeds into a FACTORY INSTALLED amplifier. If thats the case, then you need to access a Wiring Diagram for the Harness coming off the Factory Amplifier! Once this is viewable, check the wiring and locate the "Amplifier to Radio Signal Wires" and also the "Amplifier to Speakers Signal Wires" ... Now go back to your LOC and look at the wires you tapped to get the Line Signals to the converter, and make sure that you havent tapped your lines off of the AMPLIFIER TO SPEAKER wires. These wires carry a small electrical current because they are coming powered from the Amplifier, and most Line Output Converters are PASSIVE, which could short the signal the LOC creates thus reducing your signal gain, but does have the capability to surge back to the Factory Amplifier, which could possibly melt the shielding of the factory wiring, and thus allow your signal to cross or ground out! If you can, try running another RCA input to your Sub-Amplifier from another source other than your car, and see if your protection lights go out and the amp returns to normal operation. If so then your LOC or Factory amp is to blame. If not, then the second diagnosis is much simpler, which is your Alternator current has been reduced due to many different possibilities, and you should acquire a .5 or 1 Farad Stiffening Capacitor which will reduce the excess draw from your charging system. But due to the first solution being my problem exactly, im willing to bet your's lies along the same variables... GL to you!

Apr 21, 2010 | Sony Car Amplifiers

2 Answers

Installing APX490 in a boat with 4 speakers and 1 subwoofer. The factory manual shows a diagram with each of the 4 wired to an individual channel and the subwoofer - wired to - terminal of the LF speaker...


A better solution would be
1: Get a seperate amp for the sub itself
2: Run 2 speakers on ch 1 and 2 speakers on ch 2. I assume your speakers are 4 ohms, in stereo mode that amp is stable to 2 ohms. The bridge the subwoofer on ch 3 & 4. That will work if you just want to use that amp. If you need more help you can email me @ thefowlerfam09@yahoo.com Hope this helps...

Apr 04, 2010 | Clarion APX490M Car Amp

1 Answer

I installed an aftermarket radio speakers sub and amps, the problem is with the radio reception. does the factory amp have to be powered on for the factory diversity antenna to work? if so how can you...


the after market stereo has a wire called antena if if u bought a carwiring kit than all the wires should bethere just connect it and make sure ur antena wire is connected too

Jun 28, 2009 | Car Amplifiers

1 Answer

Amp doesn't come on


Hello rheabarb,

You did not say whether or not you checked the wiring going to your subs. Many times, a shorted or grounded speaker wire will cause an amp to fail. And if the amp powers up OK with the subs disconnected, I'd suspect one or more of the wires.

Hope this helps.

May 19, 2009 | Clarion APX1300 Subwoofer Mono Amp - 300W...

2 Answers

Earthing an amp


I FOUND WHEN RUNNING MY AMPS IN MY COMMODORE, THAT THE BEST EARTH IS ACTUALLY THE SUB FRAME OF THE CAR!!
AS IF YOU FOLLOW THE NEG LEAD FROM YOUR BATTERY IT WILL BOLD ONTO THE CHASSIE OF THE VIEHCLE. SO I JUST EARTHED OUT ALL MY AMPS AND SO ON TO THE BODY (MAKING SURE THERE WAS A GOOD CONNECTION)
ALSO MAKE SURE YOUR HEAD DECK IS NOT TOUCHING ANY METAL PARTS IN WHERE YOU MOUNTED IT!!!!! GOOD LUCK....

___Luda___

Apr 14, 2009 | Sony Car Amplifiers

1 Answer

Maystar cx475


Ok, I am assuming this is the 600 watt amplifier?

DISCONNECT YOUR BATTERY!!

Supplies needed:
- 8 Gauge power wire (long enough to run from your battery to the amp placement) WITH an inline fuse!!
- Depending on your stereo (if it has amp pre-outs or not) you will either need RCA cables (long enough to reach your amp from your stereo) OR a Line-Out converter AND RCA cables.
- The power lead that connects to your "REMOTE" line on your stereo (long enough to reach from amp to stereo - usually blue)
- A good ground wire ( long enough to reach a metal part of your car from the amp)

======================================================================
STEP 1: Find a spot to run the power wire from your battery - through your firewall and into your car - and then to your amp. (DO NOT CONNECT IT TO ANYTHING YET)
STEP 2: Remove your car stereo and look to see if you have PRE-AMP outs (RCA connectors for an amp on the rear of the unit)
A- if you do, GREAT.. proceed to step 3
B- if you don't.. you will need to get a LINE-OUT CONVERTER - what this does is converts the higher signals from your standard wires on your radio, to RCA style wires to connect to your amp.
B2- you will also want to buy a wiring harness kit for your stereo, unless you want to hack away at your factory wires.. (not recommended) - connect the harness kit to your factory wire harness, wire in your leads for the output converter, and run the other end to your stereo.*
*you will need to know which wires run to the speakers you plan to power with the amplifier
B3 - once the converter is properly connected - proceed to step 3
STEP 3: Plug the RCA cables into the stereo or converter, and run them properly from behind your radio to the amp but DO NOT CONNECT THEM YET.
STEP 4: Connect the REMOTE wire from your stereo to the same wire for your amp . (this enables the amp to turn on/off with your radio.. otherwise.. you will have alot of dead batteries)
STEP 5: re-install your stereo into the car.
STEP 6: Connect the RCA speakers into the INPUTS on your amp
STEP 7: Connect the REMOTE wire to your amp.
STEP 8: Connect the speaker wire from the OUTPUTS on your amp to the speakers you wish to power
STEP 9: Connect the POWER CABLE to the amp PROPERLY
STEP 10: Connect the GROUND CABLE to a metal part of your car (sheet metal, not just a bolt)
STEP 11: Connect the POWER CABLE to the battery cable
STEP 12: Re-connect your Battery
STEP 13: Start your car, and test your radio.

If you have any issues from here.. you need to re-check all of your connections.

Oct 12, 2008 | Car Amplifiers

1 Answer

Sea ray boat Clarion stereo and amp


Unless a fuse is blown, there's a problem with the wiring or you have a defective component, there's no reason the amp shouldn't come on. You need to confirn that you have the proper voltage at the amp.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

May 23, 2008 | Clarion Car Amplifiers

2 Answers

Hooking up DVC subs


The amp is rated to run a 2 ohm load on each channel. To do this, connect the voice coils of one sub in parallel (tie both "+" on the sub to each other and both "-" on the sub to each other), then connect that sub to one channel of the amp. Repeat this process for the other sub and connect it to the other channel on the amp. The subs will be in stereo and the amp will be outputting it's maximum power.

Mar 09, 2008 | Legacy 2CH 1000W AMP Car Audio Amplifier

5 Answers

Wiring Diagram for Sony car amplifier XM-554ZR


You can download the installation manual from the link below: http://www.sony.co.id/support/product/xm-554zr?site=hp_en_ID_i It has the following diagram plus other hookup info... Please update the question & let us know if the information given was useful to you - Good Luck!

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