ICE not chillin' me: speaker issues. Help...

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Bin
Joined: Sat 12 Mar, 2016 20:50
Posts: 41

  Z3 roadster 2.2i

ICE not chillin' me: speaker issues. Help...

Post by Bin » Tue 22 Mar, 2016 17:43

My Z3 came with the original cassette radio but quite frankly, it sounded crap - a bit light on the bass to put it mildly. Some previous owner has clearly decided to retain the CD autochanger and as I have a pathological dislike of loose objects floating at will around the cockpit I fitted a head unit that has a USB socket. It still sounded wrong. I faded completely to the front and was immediately rewarded with a very thin and ready rendition of Purple Rain. Not quite what I had in mind!

Clearly, the tweeters were the only frontal output. I decided it might be prudent to check the front speakers in case they had gone the same way as the CD autochanger but they were both present and in excellent condition. So too was a harness loom comprising some 8 - 10 wires which I have to admit came as something of a surprise. There is what I presume to be a crossover circuit board attached to the N/S speaker (O/S not removed) which explains some of the cat's cradle: feed(s) to the tweeters.

So, either the crossover board has gone tits or there might be a powered supply to it that has failed. Clearly, something is getting through as evidenced by the tweeters tinny contributions to my musical ambiance, but the guts of it is sadly lacking.

Ideas anyone?

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Robert T
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Joined: Mon 12 Jun, 2006 11:35
Posts: 9984

  Z3 roadster 1.9
Location: Cheshire

Re: ICE not chillin' me: speaker issues. Help...

Post by Robert T » Tue 22 Mar, 2016 19:28

There is an amplifier on that board with a power relay. You need to connect the remote-control wire from the new headunit to the connection to it in the harness. On mine this was simply a pair of bullet connectors to mate.

There are plenty of threads on here on the subject. There is also a guide to bypassing the amplifier completely. Search for something like "footwell amplifier".

Cheers R.

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Arctic Silver '99 Z3 1.9 & Black '59 Frogeye 1275cc
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Bin
Joined: Sat 12 Mar, 2016 20:50
Posts: 41

  Z3 roadster 2.2i

Re: ICE not chillin' me: speaker issues. Help...

Post by Bin » Tue 22 Mar, 2016 20:28

Ah-ha, I had a feeling that might be the case! Thank you Robert!

Bin
Joined: Sat 12 Mar, 2016 20:50
Posts: 41

  Z3 roadster 2.2i

Re: ICE not chillin' me: speaker issues. Help...

Post by Bin » Wed 23 Mar, 2016 13:11

Couldn't find any article or forum post on this. Head unit has a purple remote wire but which wire do I connect it to?

bertiejaffa
Joined: Fri 26 Jul, 2013 10:28
Posts: 1715

  M roadster S50
Location: Manchester

Re: ICE not chillin' me: speaker issues. Help...

Post by bertiejaffa » Wed 23 Mar, 2016 13:40

http://www.zroadster.net/forum/viewtopic.php?t=14047

Forum search engines are generally pretty poor - when searching I find it much easier to use Google and search for the topic and then put zroadster.net at the end
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Robert T
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Joined: Mon 12 Jun, 2006 11:35
Posts: 9984

  Z3 roadster 1.9
Location: Cheshire

Re: ICE not chillin' me: speaker issues. Help...

Post by Robert T » Wed 23 Mar, 2016 18:26

Search worked for me: http://www.zroadster.net/forum/search.p ... +amplifier

This is the bypass thread that I turned up: http://www.zroadster.net/forum/viewtopic.php?t=9881

And here is one mentioning wiring colours for the remote control wire: http://www.zroadster.net/forum/viewtopi ... =5&t=25648

My advice remains the same - if you can make the remote control connection and get the footwell amp to power up, that is the simplest way.

Cheers R.
Arctic Silver '99 Z3 1.9 & Black '59 Frogeye 1275cc
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stevov
Joined: Sun 21 Dec, 2014 15:56
Posts: 167

  Z3 roadster 2.0
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Re: ICE not chillin' me: speaker issues. Help...

Post by stevov » Thu 24 Mar, 2016 07:01

Buy a decent 50w per channel headunit and bypass the footwell speaker amp. Job done and good sound.

Bin
Joined: Sat 12 Mar, 2016 20:50
Posts: 41

  Z3 roadster 2.2i

Re: ICE not chillin' me: speaker issues. Help...

Post by Bin » Thu 24 Mar, 2016 15:13

Brilliant guys, thanks! The head unit is 50w so if needs be I will bypass the amp altogether. Got the holidays to get that little chore done. ....

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stevov
Joined: Sun 21 Dec, 2014 15:56
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  Z3 roadster 2.0
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Re: ICE not chillin' me: speaker issues. Help...

Post by stevov » Thu 24 Mar, 2016 15:38

The amp is there because the standard Bmw head unit is low wattage. When you fit an aftermarket unit usually 45watts plus the footwell amp becomes redundant.

Bin
Joined: Sat 12 Mar, 2016 20:50
Posts: 41

  Z3 roadster 2.2i

Re: ICE not chillin' me: speaker issues. Help...

Post by Bin » Sun 27 Mar, 2016 11:40

This issue has now been resolved and all is well.

Thank you everyone who helped out.

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