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Author Topic: CCR2006 Line Level Outputs: Job done!  (Read 2697 times)

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Kevin Wood

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CCR2006 Line Level Outputs: Job done!
« on: 20 March 2007, 23:01:21 »
Well, my CCR2006 is currently sitting on my desk playing CDs through a hi-fi amp using a proper line level output - and it doesn't sound bad.

Got bored tonight so I thought I'd investigate an alternative to driving my amp from speaker level outputs. Pulled the CCR2006 out, opened up the cover and the first chip I saw was a very popular volume and tone control chip. A quick google got me a data sheet which revealed on which pins the 4 outputs to the power amps emerged. A bit of soldering and I've got a pair of front outputs at line level emerging from the back of the box.

It hasn't been tested on the car yet but it looks good so far.

I took plenty of photos so I'll post up a step-by-step guide in due course if anyone's interested. It requires some delicate soldering but isn't that difficult.

I have a feeling line inputs might be on the cards too but that's for another evening.

Kevin
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Re: CCR2006 Line Level Outputs: Job done!
« Reply #1 on: 21 March 2007, 08:28:33 »
I'm impressed Kev, nice job. :)
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Marks DTM Calib

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Re: CCR2006 Line Level Outputs: Job done!
« Reply #2 on: 21 March 2007, 11:04:10 »
Whats the driver IC no....I realy should look at this....
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Kevin Wood

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Re: CCR2006 Line Level Outputs: Job done!
« Reply #3 on: 21 March 2007, 12:21:03 »
I'll dig up the IC number tonight.

Basically it's a stereo input multiplexer, gain / balance / fader / tone controls with 4 audio outputs in a single device, I2C controlled. 75 ohm nominal Zout and can drive 10nf so I'm hoping it'll drive enough coax to reach the boot and drive the amplifier directly.

Kevin
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Re: CCR2006 Line Level Outputs: Job done!
« Reply #4 on: 21 March 2007, 13:19:55 »
I think you should do a proper how2 ;)
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Kevin Wood

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Re: CCR2006 Line Level Outputs: Job done!
« Reply #5 on: 21 March 2007, 14:06:20 »
OK. Will do. I reached for the camera halfway through the job because I thought it might be of interest so I'll try and do an illustrated guide.

Cheers,

Kevin
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Kevin Wood

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Re: CCR2006 Line Level Outputs: Job done!
« Reply #6 on: 21 March 2007, 21:31:28 »
By the way, the chip I tapped the signals off is a TDA7313N

Kevin
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Re: CCR2006 Line Level Outputs: Job done!
« Reply #7 on: 21 March 2007, 21:52:07 »
Aha.....an STM special.....seeing them tomorrow.....
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Kevin Wood

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Re: CCR2006 Line Level Outputs: Job done!
« Reply #8 on: 22 March 2007, 23:53:14 »
Just to say there's a guide in here http://www.omegaowners.com/forum/YaBB.pl?num=1174515451 showing what I did.

It may be applicable to other radios in the range too. I don't know anything about the other radios. They may look similar but be completely different inside (different manufacturers even?) or they may be practically the same. Can't hurt to take to top off and see if they use the same chip.

Kevin
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Re: CCR2006 Line Level Outputs: Job done!
« Reply #9 on: 03 April 2007, 20:58:27 »
Nice work Kevin!

This is a really good solution for those wishing to keep the standard look.  

But don't try this unless you can solder properly!  You could end up in a big mess.
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Kevin Wood

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Re: CCR2006 Line Level Outputs: Job done!
« Reply #10 on: 03 April 2007, 23:49:28 »
If anyone would like theirs done I'm happy to oblige. I could even bring the necessary bits to the next cambelt party....


Cheers,

Kevin
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Re: CCR2006 Line Level Outputs: Job done!
« Reply #11 on: 06 April 2007, 20:28:59 »
Fitting the preamp outputs was just the start:

Route signal cables into boot down driver's side of car
Route power cable down the passenger side
Buy cheap MRV-F407 amp on E-bay
Fire up MRV-F407 on the bench and find it has a fault (no mention of this on EBay)  >:(
Fix fault on MRV-F407.  :)
Fiddle around getting the amp into the first aid kit compartment in boot
Fiddle around routing cables to head unit

Well, finally finished the job today, and it sounds absolutely superb! The advice about the standard speakers was spot on. They sound excellent when fed from a decent amp. Even without a sub (yet).

The CCR2006 sounds very good when relieved of driving the speakers too!

I should confess one sin I committed during installation. The ISO connectors to the head unit are in a single moulding with the 20 way connector to the MID, etc. I had prepared a pair of short adators to go between the vehicle ISOs and the radio ISOs to access the speaker signals and antenna signal for the amp. However, I had no way of extending the 20 way connector. It was a choice of splitting the connector moulding and hoping I could still make it work, or braking into the vehicle loom to pick up the required connections. Given very little space behind the head unit for a shedload of connectors in any case, I chose the latter.  :-[


Kevin
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