Retro solution to playing music from other device

Retro solution to playing music from other device

Author
Discussion

milb001

Original Poster:

55 posts

83 months

Wednesday 24th April 2019
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Hi,

I've got a BMW 840ci (the one recently featured as 'the brave pill') with both the original BMW Business Head Unit and a period-correct Becker Traffic Pro Head Unit.

I've currently got the Becker unit installed.

Are there any clever solutions to playing music from my phone or a USB through either of these units? Alternatively, are there any modern head units, with modern functionality, that wouldn't look too out of place in my car?

The only thing which I can think of is to use an RF Transmitter, but I had one years ago and it was crap.

boyse7en

7,125 posts

172 months

Wednesday 24th April 2019
quotequote all
Has it got a cassette player?
I used a cassette to 3.5mm headphone jack adaptor in my Alfa and it wasn't bad (better than the cheap FM transmitter i had previously).

Worth spending a few extra quid for a Phillips one rather than the no-name ones on eBay (they tend to add a lot of 'noise')

ShampooEfficient

4,275 posts

218 months

Wednesday 24th April 2019
quotequote all
There may be a way to use a CD changer input, if there is one. But I can't expand, because electronics terrify me...

markiii

3,847 posts

201 months

Wednesday 24th April 2019
quotequote all
that would be my call

milb001

Original Poster:

55 posts

83 months

Wednesday 24th April 2019
quotequote all
The BMW headunit has a tape player, but I'd rather avoid the mess of a trailing cable from one of those tape converter things.

The CD multichanger may provide a solution - I wonder if I could replace this (in the boot) with something which I can connect my phone to and play media through...

RedSwede

261 posts

201 months

Wednesday 24th April 2019
quotequote all
You might be able to get a proper CD-changer emulator to aux for, most likely, the BMW Headunit.

You could hack up an emulator from an Arduino, if you have the inclination.

Or you could major-bodge it, as I have in the past:
This relies a) on having the actual changer and b) not wanting to use it. You need to hijack the 3 audio wires from the CD-changer (L/R/Gnd) and cut them. Then splice in a 3.5mm jack to the headunit side. This gives the Aux in. You then need to play anything from the CD changer to select it, and Bobs your uncle, you can play through the 3.5mm.

(You could probably "T" into the audio line to get both CD functionality and Aux, but you'd have to play silence from the CD whilst using the AUX, and the (low) output impedance of the CD-C would be "driven" by your iPhone or whatever - won't do anything any good, but whether it does it any harm I don't know.)

milb001

Original Poster:

55 posts

83 months

Wednesday 24th April 2019
quotequote all
I've just found this - https://www.amazon.co.uk/Bluetooth-Changer-Adapter...

Presumably, I'd need to run this with this BMW head unit. I don't mind that though - I don't use the sat-nav function on the Becker unit anyway and that's the only thing which separates them really.

Does anyone have any experience of this?

Allanv

3,540 posts

193 months

Wednesday 24th April 2019
quotequote all
Does the car have aux in somewhere? If so I used to have one of these before I had the parrot kit installed.

https://www.amazon.co.uk/FIREFLY-Smallest-Bluetoot...


feef

5,206 posts

190 months

Wednesday 24th April 2019
quotequote all
Have a look at the Dension kit. They should have something to fit

http://shop.dension.com/gateway

90saddict

19 posts

69 months

Wednesday 24th April 2019
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Have you thought about the latest pure Highways? A lot cheaper than the much earlier version that I have (which doesn't do bluetooth)- can place it in line with the analogue aerial feed so that it 'injects' its FM relay directly this avoids all the issue with interference from ebay specials and the like - new versions also include hands free calling.

For Bluetooth as another reader suggested I use a little receiver that plugs into the aux socket - I've got a couple of cheapo Amazon ones in various motors and they work a treat

Trev

gmaz

4,629 posts

217 months

Thursday 25th April 2019
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90saddict said:
- can place it in line with the analogue aerial feed so that it 'injects' its FM relay directly this avoids all the issue with interference from ebay specials and the like

Trev
Are you sure? I just looked at the install guide and I can't see where you can do that. It will plug into a Aux socket if there is one but I doubt the OPs car has one.


milb001 said:
I've just found this - https://www.amazon.co.uk/Bluetooth-Changer-Adapter...

Presumably, I'd need to run this with this BMW head unit. I don't mind that though - I don't use the sat-nav function on the Becker unit anyway and that's the only thing which separates them really.

Does anyone have any experience of this?
This looks like the best solution if you're not concerned with DAB and want to keep the original unit.

90saddict

19 posts

69 months

Friday 26th April 2019
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gmaz said:
90saddict said:
- can place it in line with the analogue aerial feed so that it 'injects' its FM relay directly this avoids all the issue with interference from ebay specials and the like

Trev
Are you sure? I just looked at the install guide and I can't see where you can do that. It will plug into a Aux socket if there is one but I doubt the OPs car has one.
My bad - I didn't notice when looking to upgrade that they've taken away the box of gubbins that connected to your FM lead and integrated it all into the aerial and control unit. That's a real shame as I was toying with the idea of upgrading mine. Sorry