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Author Topic: Fitting Sony H/U trouble  (Read 11063 times)

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Ratty

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Re: Fitting Sony H/U trouble
« Reply #15 on: 04 August 2009, 23:48:38 »

Quote
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I would ultimately like to have the display and steering wheel controls working ...... ,  ..... tbh the steering wheel controls are more important to me. typical Vauxhall eh? ;)

Put your CCRT700 back in then!  ;)  ;)  ;)  ;)
  :y

it is back in for the time being, but most of my music is mp3 and as the changer doesn't read CDR discs and the unit itself only plays radio or cassette it's not much use to me.
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Re: Fitting Sony H/U trouble
« Reply #16 on: 04 August 2009, 23:50:06 »

Unlike a conventional 4 Ohm system, the Omega BOSE system uses an amplifier with non standard level inputs giving little or no full control over the volume, and the speakers are also 2 Ohm, meaning that if your stereo was connected directly to them after bypassing the amp it would either shut down or more likely go bang.

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Kevin Wood

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Re: Fitting Sony H/U trouble
« Reply #17 on: 04 August 2009, 23:50:26 »

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Forgive my ignorance here but what's the problem with Bose?

Bose head units output a low level signal on the "speaker" part of the ISO connector, so if a standard head unit is connected it will overdrive the Bose amplifier.

Kevin
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Ratty

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Re: Fitting Sony H/U trouble
« Reply #18 on: 04 August 2009, 23:53:36 »

ahhh so that means even if i did find a way of getting the Sony wired in it still wouldn't work?
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Re: Fitting Sony H/U trouble
« Reply #19 on: 05 August 2009, 00:07:20 »

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ahhh so that means even if i did find a way of getting the Sony wired in it still wouldn't work?

Well, you'd need to adapt the speaker outputs to drive the Bose amp. Not sure if you can buy an off-the-shelf lead to accomplish this. In theory it's not that difficult...

Other option would be to remove the Bose system and replace with an atermarket amp and speakers but because Bose uses non-standard 2 ohm speakers you really would need to replace the whole shooting match. :'(

Kevin
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Re: Fitting Sony H/U trouble
« Reply #20 on: 05 August 2009, 00:17:36 »

I'm beginning to regret buying this Miggy :(

okay, so the CCRT700 has got to stay (or is there an alternative HU that will play MP3s?) is there an mp3/CDR compatible CD changer out there that will work with this system?
« Last Edit: 05 August 2009, 00:18:05 by ratsalad »
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Re: Fitting Sony H/U trouble
« Reply #21 on: 05 August 2009, 08:17:34 »

Where is the Bose amp on a '99 estate?
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Re: Fitting Sony H/U trouble
« Reply #22 on: 05 August 2009, 09:06:37 »

bose amp on estate is in drivers side cubby hole in boot.


The ccrt display is unique, I have never seen an adapter work with it (or any of the semi-can based ones).


The CDC2 fitted to ccrt700 is more resilient against failure from CDRs (use top quality blanks, not the 10p shite, and burn at slow speed) than some other changers. (TheBoy now waits for Dave DND to shoot him down ::))
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Re: Fitting Sony H/U trouble
« Reply #23 on: 05 August 2009, 09:09:35 »

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ahhh so that means even if i did find a way of getting the Sony wired in it still wouldn't work?

Well, you'd need to adapt the speaker outputs to drive the Bose amp. Not sure if you can buy an off-the-shelf lead to accomplish this. In theory it's not that difficult...

Other option would be to remove the Bose system and replace with an atermarket amp and speakers but because Bose uses non-standard 2 ohm speakers you really would need to replace the whole shooting match. :'(

Kevin

In theory it could be done. However, thre are NO aftermarket adaptors to allow this that are commercially available, and due to the age of the vehicle now, its unlikely that any ever will be.

The biggest problem in trying to "adapt" something from the aftermarket units is the volume control itself on the head unit. If you have a volume control that "clicks" as it is rotated, or buttons that go up and down, then the volume will vary in predetermined steps, and these steps are too large for the BOSE amp to cope with - the result is that the volume is either all or nothing. Older stereos had a smooth rotary volume control in the form of a good old fasioned potentiometer, and whilst these gave good control at low volumes, if you turned the volume up too much it owould overdrive the BOSE amp and the whole thing would go bang again.

Options are: 
If you want to retain the BOSE system, then the only option is an FM modulator, not the chinese ones, but a  proper one. (I am currently evaluating one that also displays track info as well through any radio with an RDS display)

Or, if you want to go down the aftermarket route, then everything that is to do with BOSE will have to be replaced, none of it is compatable with the aftermarket units - and that includes the amp, the speakers and a fair bit of rewiring. Again, its all or nothing, but in my opinion, well worth the effort.

 ;)
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Re: Fitting Sony H/U trouble
« Reply #24 on: 05 August 2009, 09:13:06 »

hmm, you know, I don't think my system is a Bose one, I have thoroughly searched both cubby holes - left and right - and there's nothing there, however in the drivers side cubby hole there is a small-ish connector along with what looks like an aerial connector, but no amp, and from what i've read here and on VxON shouldn't there be a sub in the back somewhere with the bose system?
« Last Edit: 05 August 2009, 09:15:19 by ratsalad »
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Re: Fitting Sony H/U trouble
« Reply #25 on: 05 August 2009, 09:15:28 »

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 (TheBoy now waits for Dave DND to shoot him down ::)

 ;D
OK, if you insist . . . .  Taking Aim . . .     :P
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Re: Fitting Sony H/U trouble
« Reply #26 on: 05 August 2009, 09:21:02 »

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hmm, you know, I don't think my system is a Bose one, I have thoroughly searched both cubby holes - left and right - and there's nothing there, however in the drivers side cubby hole there is a small-ish connector along with what looks like an aerial connector, but no amp, and from what i've read here and on VxON shouldn't there be a sub in the back somewhere with the bose system?

There is a fair chance its not BOSE, and if you can`t find teh amp or subs, the display doesn`t say BOSE when switched on, and there isn`t a BOSE label on the head unit, then you may be ok.

If thats the case, try connecting up the two 8 pin parts of the ISO block to your adaptor - ignoring the top block, as thats never going to work the display anyway there is a 75% chance that the steering controls may work. I would carefully seperate the top Mini ISO block from the car loom with a sharp knife.

 :-/
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TheBoy

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Re: Fitting Sony H/U trouble
« Reply #27 on: 05 August 2009, 09:21:34 »

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hmm, you know, I don't think my system is a Bose one, I have thoroughly searched both cubby holes - left and right - and there's nothing there, however in the drivers side cubby hole there is a small-ish connector along with what looks like an aerial connector, but no amp, and from what i've read here and on VxON shouldn't there be a sub in the back somewhere with the bose system?
It may not have bose. Only Elites had it. CDX may have come with non bose variant of ccrt700
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Re: Fitting Sony H/U trouble
« Reply #28 on: 05 August 2009, 09:34:27 »

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The CDC2 fitted to ccrt700 is more resilient against failure from CDRs (use top quality blanks, not the 10p shite, and burn at slow speed) than some other changers. (TheBoy now waits for Dave DND to shoot him down )

Still aiming . . . And I`ll let you off with that one.  :o

You would be forgiven for thinking that, but its actually the same laser and mech inside - the only difference on CDC2 is the main PCB that changes the protocol between variants.

However, what has probably made you think this is that the CCRT700 was an exceptionally expensive upgrade in its day, and as a result the units tend to have had a much easier life, and are not yet as knackered as the rest of them. The better condition the laser is in, the more chance it has of reading the CDR`s, however, its demise is still just as rapid with continue use.

 ;)
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Ratty

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Re: Fitting Sony H/U trouble
« Reply #29 on: 05 August 2009, 09:38:06 »

could I be that lucky? I'll go and try later when the big guy in the sky stops peeing on me  ::) :P

cheers for the help fellas  :y :)
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