Two channels will make 28W of sound power and another 28W of heat. Then the 56W total divided by the 13.8V power supply is a current of 4.1A, plus some more current for the CD player's parts.
If the power supply is only 12V then the power output and current used are much lower. A fully charged car battery is 13.8V but some are charged at 14.4V.

The 5A power supply is for appliances, not audio equipment. It might make a very loud buzz or hum due to inadequate filtering.

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Uncle $crooge

 

Looks like a Panasonic radio and Volkswagen/Audi/Mercedes plug adapter to me.

Anyways, the usual color code for those after market radio is:

Yellow = Constant 12Volt
Red = Switched 12 Volt
Black = Ground
Blue = Power antenna or external amp remote control (not needed here)
White = Front Left Speaker
Grey = Front Right Speaker
Green = Rear Left Speaker
Purple = Rear Right Speaker

HTH

EDIT: deuh.. i didn't notice your PDF... at least it confirm it's a panasonic

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Steve

 

Thanks to everyone for your help

do you have any ideas for power supplies? that is the only thing i need before i can start

also, what is the problem with using the phono out to my speakers? these are my speakers, it would save me buying new speakers..... would i still get a hiss from them??

 

The pre-amp outputs on the CD player on the RCA jacks are perfect for driving your amplified speakers. Then any half-decent 12V/2A power supply will power the CD player parts.

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Uncle $crooge

 

Thanks alot for your help

will this 12V 3A power supply do..
http://www.maplin.co.uk/Module.aspx?...aptor&doy=16m6 ?? sorry thats AC, it needs to be DC doesnt it??

how about this one: http://www.rapidonline.com/productin...moduleno=71064 (12V DC 2A version)

Thanks again for your help,
Mike

 

The 12V/2A regulated switching power supply will probably be fine to power your CD player without using its amplifiers.

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Uncle $crooge

 

ok, thank you very much for your help

 

sorry, 1 last question.... could I use an AC supply with a diode bridge??

like this:


also, what capacitor would you reccomend?
I have many values, ranging up to 1000uF

 

The AC supply made with a transformer, diode bridge and filter capacitor is not regulated so its output voltage might vary from 12V to 16V. Also using only 1000uF for a filter capacitor will result in a lot of 100Hz ripple which might be loud.

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Uncle $crooge

 

will this voltage change damage the cd player??

and would a smaller capacitor be quieter and result in less ripple?

Thanks again,
Mike

 

You need a regulated power supply for the CD player. The voltage changes of a simple supply might damage it.
The main filter capacitor reduces ripple more when its value is larger. With a smaller value then the ripple is huge.

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Uncle $crooge

 

oooh, ok thanks I will buy the power supply then.... probably the best idea

 

really sorry to keep asking questions, but what about a computers PSU? that gives a 12v output doesnt it?? and i presume its regulated

 

I can't remember how much current at 12V a computer power supply gives. The 5V will need a load in order for the power supply to operate.

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Uncle $crooge

 

success

I tried it before reading your post. I plugged the CD player into the yellow and black wires on the molex connector, shorted the green and black wires on the 20 pin connector, the power supply came on... pressed the power button on the CD player and it came on

Thank you once again for your help... I'm working on a case for it at the moment using some 5mm thich perspex...

Here are some pics:

1st time I tried it (using power supply that is in my PC):


2nd time (using spare power supply):