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Old 3rd December 2006, 10:16 PM   #1
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Default Quick Question

I've got a Alpine CDM-7861 headunit, and I want go buy this cable from sonicelectronix that lets me hook up my ipod to it. It's a older headunit so it's the M-Bus.

Adapter: http://www.sonicelectronix.com/item_2082.html

Headunit: http://www.shopping.com/xPO-Alpine-C...www.google.com


They should work right?
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Old 3rd December 2006, 10:40 PM   #2
v-bro is offline v-bro  Netherlands
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Looks OK, allthough I'd be the type of guy who would open up the headunit and make the connections myself (and save the 20 dollars...)
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Old 3rd December 2006, 11:16 PM   #3
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How would i wire the connections to the headunit?? is there a tutorial or something... lol
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Old 3rd December 2006, 11:33 PM   #4
v-bro is offline v-bro  Netherlands
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You can take the cover off and start by touching the pins one by one to
hear whether a channels starts to produce hum (the unit has to be connected and 'on' offcourse...

A hum in the left channel and there's your left input, a hum in the right channel and there's your right input. Groung can be found everywhere...
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Old 3rd December 2006, 11:38 PM   #5
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Awsome, I shall start playing with it tommorow Thanks man
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Old 3rd December 2006, 11:57 PM   #6
v-bro is offline v-bro  Netherlands
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You're welcome,

some more hints:

Don't short any pins!

Use for instance a sharp nail or watchmakers screwdriver (sharp fully conductive metal object).

If you don't hear anything try to DO or DO NOT touch ground with your other hand, or turn the volume slightly up...

The rest is wires and soldering...
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Old 8th December 2006, 03:34 AM   #7
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ive got it.. its working great

thanks for everyones help!!!
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Old 8th December 2006, 03:38 AM   #8
v-bro is offline v-bro  Netherlands
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Hey, again you're welcome...

How much did it cost now?
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Old 8th December 2006, 03:40 AM   #9
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I've got another question

OK, My mp3 player doesn't have a plug for charging or anything, It only takes batteries. My question is, is there a way where I can hook up my cd player to the battery in my car. It takes one AAA battery and thats 1.5V.... I was thinking of something that gives out 1.5V and maybe solder a positive wire to the + side of the mp3 player(where the battery + side goes) and a ground wire on the opposite side?? how can i do this or do i have an alternative?? I would like it to be possible that the mp3 player is still portable, meaning i can slap a battery and take it to the gym or w/e, but when i get in the car i can use the power from the car...

This might be a dumb question, and im a n00b so i dont know how to do this...



PS.. that only cost me a whole total of 4 bux VIA walmart hahah
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Old 8th December 2006, 03:59 AM   #10
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I think LM series regulators can help you, I'll look one up..like LM78015 if it exists...normally the last two digits mean the output voltage, for instance LM7805 produces 5V, LM7812 produces 12V....There are many types, also variable, but that takes more external components....

I don't know if there's any converter for sale somewhere...
I always design my own from 12V sofar...

I'll see what I can find..

And can make a simple schematic for you (one component with only three legs, another (couple) of buffercapacitors and perhaps a filter and you're ready to go....)
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