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Smoking speaker!
- steve_naive
- Member
- Posts: 220
- Joined: Tue Oct 01, 2019 2:30 pm
- Location: Northern Ireland
Smoking speaker!
Tweeter (i assume) just under the wing mirror just started glowing orange and smoking.
I've recently fitted a new android stereo, could there be some sort of impedance mismatch?
I'm guessing it's blown now, so does anybody have recommendations for speaker upgrades?
I've recently fitted a new android stereo, could there be some sort of impedance mismatch?
I'm guessing it's blown now, so does anybody have recommendations for speaker upgrades?
- RustyZ4
- Lifer
- Posts: 3622
- Joined: Fri Dec 14, 2007 7:23 pm
- Location: Maidstone, Kent
Smoking speaker!
Tweeters are pretty sensitive. They can blow quite easily unlike a mid or woofer driver,If the tweeter is being damaged, best to see if the crossover is ok. and check the connections, Also (and more likely), an amp with not enough power can do that as well. When an amp clips, it can produce sounds that fry the tweeter,
yes you can get replacements, Audison, Eton or Hertz for example, as they are plug and play, but the they are going to show up the other stock speakers you have, if you want to keep stock, see if anyone has any they do not want
yes you can get replacements, Audison, Eton or Hertz for example, as they are plug and play, but the they are going to show up the other stock speakers you have, if you want to keep stock, see if anyone has any they do not want
Z4 Mineral Grey, 28i MSport Auto, lots of goodies
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
- steve_naive
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- Posts: 220
- Joined: Tue Oct 01, 2019 2:30 pm
- Location: Northern Ireland
Smoking speaker!
Here's the thing, when you say amp, are we talking about the amp that's been in the car since new? Or the new head unit.RustyZ4 wrote: ↑Fri Nov 15, 2019 6:24 pm Tweeters are pretty sensitive. They can blow quite easily unlike a mid or woofer driver,If the tweeter is being damaged, best to see if the crossover is ok. and check the connections, Also (and more likely), an amp with not enough power can do that as well. When an amp clips, it can produce sounds that fry the tweeter,
yes you can get replacements, Audison, Eton or Hertz for example, as they are plug and play, but the they are going to show up the other stock speakers you have, if you want to keep stock, see if anyone has any they do not want
I've only owned the car this last month and fitted the stereo a week ago. I used a harness adaptor and had to remove some blue plastic blanks from the existing harness plug to get the harness adaptor to fit. Other than that I'm not sure what I could have broke to cause the speakers to blow!
- ph001
- Lifer
- Posts: 3870
- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
Smoking speaker!
The crossover on the door tweeter is no more than a small electrolytic capacitor on the tweeter itself, if the capacitor were to go short circuit then it could certainly blow the tweeter but that is fairly unlikely.
What were the circumstances when it blew, were you blasting out baby shark at full volume, or listening to agadoo at more sedate levels?
What were the circumstances when it blew, were you blasting out baby shark at full volume, or listening to agadoo at more sedate levels?
- steve_naive
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- Posts: 220
- Joined: Tue Oct 01, 2019 2:30 pm
- Location: Northern Ireland
Smoking speaker!
(There is no level sedate enough for Agadoo).ph001 wrote: ↑Fri Nov 15, 2019 9:05 pm The crossover on the door tweeter is no more than a small electrolytic capacitor on the tweeter itself, if the capacitor were to go short circuit then it could certainly blow the tweeter but that is fairly unlikely.
What were the circumstances when it blew, were you blasting out baby shark at full volume, or listening to agadoo at more sedate levels?
Volume wasn't too loud.
I need to buy a new multimeter so I can check the cap wiring tomorrow. I don't want to invest in new speakers if they're gonna explode!
- RustyZ4
- Lifer
- Posts: 3622
- Joined: Fri Dec 14, 2007 7:23 pm
- Location: Maidstone, Kent
Smoking speaker!
I have never had a car speaker smoke, but I have seen a PA speaker do this, in that case it was the crossover that failed, but we are talking some serious power (5000w PA) crossing over that caused it to smoke, it could be a component failure, the amp as I said clipping, possibly a failure in the amp to send a DC power up the cable.
Did it make any funny noises before this happened, popping, clipping, distortion?
Did it make any funny noises before this happened, popping, clipping, distortion?
Z4 Mineral Grey, 28i MSport Auto, lots of goodies
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
- steve_naive
- Member
- Posts: 220
- Joined: Tue Oct 01, 2019 2:30 pm
- Location: Northern Ireland
Smoking speaker!
Nothing. Sounded fine, all of a sudden the missus mentioned the smoking and I saw an orange glow.RustyZ4 wrote: ↑Fri Nov 15, 2019 10:04 pm I have never had a car speaker smoke, but I have seen a PA speaker do this, in that case it was the crossover that failed, but we are talking some serious power (5000w PA) crossing over that caused it to smoke, it could be a component failure, the amp as I said clipping, possibly a failure in the amp to send a DC power up the cable.
Did it make any funny noises before this happened, popping, clipping, distortion?
I believe the car's amp is factory installed (Hi Fi package). So it's a bit of a coincidence that the speaker blows a week after installing a new stereo.
Is it possible that the new stereo is driving the amp harder than the Business CD unit had been doing?
Stereo:
https://www.amazon.co.uk/gp/product/B07 ... UTF8&psc=1
- ph001
- Lifer
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- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
Smoking speaker!
DC into a tweeter won’t do anything as it just charges up the capacitor in series with it. Once the cap is charged, no current flows. It’s a different story for the woofer...they are killed easily with DC. Clipping can damage everything though like you said, but its usually uncomfortably loud and unpleasant sounding at that point. My guess is the additional power of the head unit caused a shorted turn on the tweeter coil which then caused it to burn out. Upgraded tweeters should solve the problem.
When you take the tweeter out, make sure it has the high pass crossover cap with it. I’m almost certain the cap is there with the tweeter but if not, that could certainly explain your problem.
When you take the tweeter out, make sure it has the high pass crossover cap with it. I’m almost certain the cap is there with the tweeter but if not, that could certainly explain your problem.
- steve_naive
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Smoking speaker!
I'll try and take a look tomorrow.ph001 wrote: ↑Fri Nov 15, 2019 10:50 pm DC into a tweeter won’t do anything as it just charges up the capacitor in series with it. Once the cap is charged, no current flows. It’s a different story for the woofer...they are killed easily with DC. Clipping can damage everything though like you said, but its usually uncomfortably loud and unpleasant sounding at that point. My guess is the additional power of the head unit caused a shorted turn on the tweeter coil which then caused it to burn out. Upgraded tweeters should solve the problem.
When you take the tweeter out, make sure it has the high pass crossover cap with it. I’m almost certain the cap is there with the tweeter but if not, that could certainly explain your problem.
Just realised that I have the new HU eq set to 'powerful'. Hmm.
- steve_naive
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Smoking speaker!
Just discovered that the boot is leaking. Battery and amp wet.
- steve_naive
- Member
- Posts: 220
- Joined: Tue Oct 01, 2019 2:30 pm
- Location: Northern Ireland
Smoking speaker!
I don't see a capacitor anywhere.
Do I need to take it apart further?
Do I need to take it apart further?
Smoking speaker!
If you have the 676 mid range amp which you replaced with the head unit that has 4 by 50 watts, depending how your wiring harness works it could have pumped 50 watts into the tweeter as the original system drives the tweeter of its own channel without any capacitors as frequency determination has been done by DSP in the oem amp...so no wonder it glows..
- steve_naive
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- Joined: Tue Oct 01, 2019 2:30 pm
- Location: Northern Ireland
Smoking speaker!
Not sure about any of that.Pbondar wrote: ↑Sat Nov 23, 2019 4:53 pm If you have the 676 mid range amp which you replaced with the head unit that has 4 by 50 watts, depending how your wiring harness works it could have pumped 50 watts into the tweeter as the original system drives the tweeter of its own channel without any capacitors as frequency determination has been done by DSP in the oem amp...so no wonder it glows..
I think my car came with the standard amp, hi fi system. I thought the Carver system was the one with DSP?
My harness is the standard harness that came with the car, I used an adapter to connect the new stereo.
Smoking speaker!
Well clearly it worked for 10+ years before you twiddled with it..you twiddled..speaker blew up, implies something wrong with what you did or a duff wiring harness adapter ..these things do happen on Zs as they often are similar but not quite the same as the 3 series equivalents..steve_naive wrote: ↑Sat Nov 23, 2019 7:52 pmNot sure about any of that.Pbondar wrote: ↑Sat Nov 23, 2019 4:53 pm If you have the 676 mid range amp which you replaced with the head unit that has 4 by 50 watts, depending how your wiring harness works it could have pumped 50 watts into the tweeter as the original system drives the tweeter of its own channel without any capacitors as frequency determination has been done by DSP in the oem amp...so no wonder it glows..
I think my car came with the standard amp, hi fi system. I thought the Carver system was the one with DSP?
My harness is the standard harness that came with the car, I used an adapter to connect the new stereo.
Point is the next tweeter you buy is likely to follow in the footsteps of the first one...
- steve_naive
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- Joined: Tue Oct 01, 2019 2:30 pm
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Smoking speaker!
Yes this is my concern!Pbondar wrote: ↑Sat Nov 23, 2019 8:04 pmWell clearly it worked for 10+ years before you twiddled with it..you twiddled..speaker blew up, implies something wrong with what you did or a duff wiring harness adapter ..these things do happen on Zs as they often are similar but not quite the same as the 3 series equivalents..steve_naive wrote: ↑Sat Nov 23, 2019 7:52 pmNot sure about any of that.Pbondar wrote: ↑Sat Nov 23, 2019 4:53 pm If you have the 676 mid range amp which you replaced with the head unit that has 4 by 50 watts, depending how your wiring harness works it could have pumped 50 watts into the tweeter as the original system drives the tweeter of its own channel without any capacitors as frequency determination has been done by DSP in the oem amp...so no wonder it glows..
I think my car came with the standard amp, hi fi system. I thought the Carver system was the one with DSP?
My harness is the standard harness that came with the car, I used an adapter to connect the new stereo.
Point is the next tweeter you buy is likely to follow in the footsteps of the first one...