MR2 Roadster Owners Club

The Workshop => Maintenance, Problems & Troubleshooting => Topic started by: nimrod on October 12, 2018, 17:26

Title: Passenger door speaker
Post by: nimrod on October 12, 2018, 17:26
The original radio has been working fine, as I was driving home today the door speaker was not working, what's the first thing I should check please.
Title: Re: Passenger door speaker
Post by: Ardent on October 12, 2018, 18:13
All connections
Chaffing of wires
Balance /fade have somehow inadvertently been adjusted and only sending signal to one side. (unlikely)
Title: Re: Passenger door speaker
Post by: nimrod on October 12, 2018, 19:53
I thought it might be the speaker balance will check tomorrow, had to read the manual to remind me how to do it.
Title: Re: Passenger door speaker
Post by: nimrod on October 12, 2018, 20:06
BTW I meant driver side speaker not working so if the balance hasn't been altered thinking it might be the speaker connection with all the door opening and closing, can the speaker grill section be removed without having to remove the whole door card.
Title: Re: Passenger door speaker
Post by: Ardent on October 12, 2018, 20:26
 Hoping I'm wrong, but going to say no.
Title: Re: Passenger door speaker
Post by: Topdownman on October 12, 2018, 20:36
Quote from: nimrod on October 12, 2018, 20:06
BTW I meant driver side speaker not working so if the balance hasn't been altered thinking it might be the speaker connection with all the door opening and closing, can the speaker grill section be removed without having to remove the whole door card.

No, the speaker grill is plastic welded onto the rest of the door card so you will have to remove the whole doorcard to have a look at what is going on.

Maybe a good idea to sound deaden the doors while you are in there so at least there will be a positive side to whatever you find!

Door card removal is easy once you know what you are doing so try to watch some youtube videos as things like the door handle backing plates are not easy until you know the way to remove.

Title: Re: Passenger door speaker
Post by: Bossworld on October 12, 2018, 20:46
Both door speakers use the same connector (although you can't swap the speakers physically) but that's the easiest way to rule out a wiring issue.

On mum's car the driver's speaker just died. Nothing visibly wrong with it. Grabbed a replacement from a breaker and wrapped it in a carrier bag before fitting in case water ingress was the cause.
Title: Re: Passenger door speaker
Post by: 1979scotte on October 12, 2018, 21:18
Quote from: nimrod on October 12, 2018, 20:06
BTW I meant driver side speaker not working so if the balance hasn't been altered thinking it might be the speaker connection with all the door opening and closing, can the speaker grill section be removed without having to remove the whole door card.

Had this on the MR2 support polo.
The wires running into the door had worn through.
Only found this out after taking all the door card out.
Which was totally unnecessary.
Title: Re: Passenger door speaker
Post by: nimrod on October 12, 2018, 22:48
I didn't mention the tweeter speaker is also not working, which makes me think it's wire or connection.
Title: Re: Passenger door speaker
Post by: nimrod on October 12, 2018, 22:52
Quote from: Topdownman on October 12, 2018, 20:36
Quote from: nimrod on October 12, 2018, 20:06
BTW I meant driver side speaker not working so if the balance hasn't been altered thinking it might be the speaker connection with all the door opening and closing, can the speaker grill section be removed without having to remove the whole door card.

No, the speaker grill is plastic welded onto the rest of the door card so you will have to remove the whole doorcard to have a look at what is going on.

Maybe a good idea to sound deaden the doors while you are in there so at least there will be a positive side to whatever you find!

Door card removal is easy once you know what you are doing so try to watch some youtube videos as things like the door handle backing plates are not easy until you know the way to remove.
Good to know if not I would had tried to force it off, it looked like it was clipped on.
Title: Re: Passenger door speaker
Post by: nimrod on October 13, 2018, 09:23
Just removed door card, the connection all seem to be connected, all seem plugged in at the back of the radio, the radio speaker balance was in the middle I also noticed the tweeter is working, I'm thinking new speaker.
Title: Re: Passenger door speaker
Post by: Joesson on October 13, 2018, 09:52
@nimrod (https://www.mr2roc.org/forum/index.php?action=profile;u=13607), on je72's 'Intermittent starting thread' the opinion is that there is a continuity problem in the wiring loom.
Similarly, if both ends of the speaker wiring are connected that does not mean that the wiring between the ends is continuous.
I suggest you check for continuity before buying a replacement speaker.
Title: Re: Passenger door speaker
Post by: Carolyn on October 13, 2018, 11:16
My thought (i'm no audio expert):

As I recall, the tweeter is simply wired in parallel to the main speaker and that wiring is within the door.

That means the signal is getting to the inside of the door, which points to a poor connection on the main speaker or (as you suggest) a duff speaker.
Title: Re: Passenger door speaker
Post by: nimrod on October 13, 2018, 11:19
Quote from: Joesson on October 13, 2018, 09:52
@nimrod (https://www.mr2roc.org/forum/index.php?action=profile;u=13607), on je72's 'Intermittent starting thread' the opinion is that there is a continuity problem in the wiring loom.
Similarly, if both ends of the speaker wiring are connected that does not mean that the wiring between the ends is continuous.
I suggest you check for continuity before buying a replacement speaker.
Thanks for that, might leave it until Monday, the college I work at has a motor vehicle department they should be able to test.
Title: Re: Passenger door speaker
Post by: Bossworld on October 13, 2018, 11:40
Take both cards off and try the passenger speaker on the driver's side. Half an hour's work tops.
Title: Re: Passenger door speaker
Post by: nimrod on October 17, 2018, 07:59
Thanks to Dick the new speaker arrived I plugged it in and it worked, my gamble worked out this time but not always, thanks for your advice.