The only unit that is missing is the DSP, which gets called an amp, but isn't. It only contains crossovers for the speakers and sound signal processing. The amps for the speakers are in the BM54 radio module. The speaker outs are on the plug on your diagram. If the DSP is present, it identifies itself on the iBus and appears on the screen as an option. It feeds the many speaker channels on the high line system. The radio module feeds it the signals from the selected source.

If the DSP is not there, the radio module drives the speakers directly. 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Hiya bud, well you learn a new thing every day! So the Amp isn't, it's an equaliser / crossover, and the power amp bit comes from the radio (bm54) head, talk about confusing. Do you think that the descriptions were written in English, translated in to Chinese, then into French before being translated back into English ? It's techno Chinese whispers
Yesterday I learnt how to get my box brownie images on to the web  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!

Yea, the power amp IC's are in the BM54, which also houses the radio circuits.

Thats why there are posts about the BM54 Stage 2 amp upgrade, which I have had. It is a bit confusing, but prob easier for the general masses to call the DSP the DSP Amp as the speakers are connected to it, not the BM54 in high line systems.

Otherwise, as you said, there would be no amplification in cars without DSP.......

The amp really is the weak link in the system fitted. It always sounded a bit flat to me, even with DSP. Upgraded it can turn the speakers inside out. Really wakes it up.

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Sorry for the late reply. Bad weather and an unexpected trip to the ospital did not allow me to dismantle my "Kitten from Ipanema (sand)".

So, after all, the CD wiring is there, and... SURPRISE!

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Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated

I can tell you that all the BM54s floating about are the same. The differing part numbers just change as the firmware installed is updated at manufacture.

I understand a later bmw cd changer will play mp3s but they can be a bit pricey on the ebay unless you get lucky.

It should identify itself on the iBus and appear as a source.

The only bit I'm not to sure about, is I seem to remember that the screen will show you the title of the MP3 track playing, but only if you have the later version of firmware on the bm54..... Which you prob don't have, but they will still play though.....

......it's the bm54 or the mk4 sat Nav you need to see text on the screen, I just can't remember which......

...off to research now.....

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Ah, here you go, you need the mk4 nav if you want to see the titles of the mp3s on the screen.

http://www.roverupgrades.com/Range_Rover_MP3_Cd_Changer.html

Will work fine without though......

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Last edited by mjdronfield on 16th Nov 2014 6:32pm. Edited 1 time in total

mjdronfield wrote:

I can tell you that all the BM54s floating about are the same. The differing part numbers just change as the firmware installed is updated at manufacture.

I understand a later bmw cd changer will play mp3s but they can be a bit pricey on the ebay unless you get lucky.

It should identify itself on the iBus and appear as a source.

The only bit I'm not to sure about, is I seem to remember that the screen will show you the title of the MP3 track playing, but only if you have the later version of firmware on the bm54..... Which you prob don't have, but they will still play though.....

......it's the bm54 or the mk4 sat Nav you need to see text on the screen, I just can't remember which......

...off to research now.....

Thank you Mjdronfield.

Actually, I'm in the lucky position to buy a genuine BMW CD/MP3 changer for 70£... so I think I'm gonna give it a go.

http://www.ebay.it/itm/251718616770?ssPage...Track=true



BTW, are we sure that the third module in my boot is the analog TV tuner?

Yil000022 is the analogue tv unit, with the White and blue connectors and the 2 connectors for the tv aerials.

It is nearest to the rear seats in the boot, with the bm54 sort of below it and harder to reach.

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Understood... today, when I removed the BM 54, I thought "such a small size for a cheeky little b d that causes so much trouble"...

BTW... hav you checked the link in my last post? Is that MP3 CD changer good to be bought?

The cd itself looks good, but you will need to check that the connector matches the connector in the car, as I can't see a picture of it in the ebay advert.

Possibly best to ask the seller to make sure......

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Uhm... Actually in the link there is a second picture with the connector... looks ok to me, doesn't it?

Yes I saw that, but I understand some have round pins and some have flat. That is the extent of my knowledge I'm afraid. I don't know when each were used. Can't really see the pins in the advert..... Can you ?

A friend of mine fitted one in his BMW M5 and he didn't have any issues connecting it, so I may be thinking of the older units, in which case it will work fine. 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Ignore me, I am talking rubbish. It should be fine. The differing pins are at the radio end, and are for the older models, of which ours are not.

http://www.bimmernav.com/bmw_mp3_cd_changer.html

Pictures on the above link once more.... 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Last edited by mjdronfield on 16th Nov 2014 7:24pm. Edited 1 time in total

Well... I'll contact the seller l, let's hear what he says about the pins...

Bought.