Alan is right. It's worth a look.
The sealed back cup looks removable. It could just be a dodgy soldered joint inside or a defective lead out wire from the coil.
Printable View
Alan is right. It's worth a look.
The sealed back cup looks removable. It could just be a dodgy soldered joint inside or a defective lead out wire from the coil.
Talking of broken drivers. Here are the tweeters from the same Pioneer speakers.
http://i65.tinypic.com/14a93ys.jpg
They are decidedly 'not well'. The foam surrounds have hardened and crumbled, so Oliver sent them to me to see if I could do anything with them.
First things first. Measure up and cut foam rings of the correct size.
http://i66.tinypic.com/20ix9w2.jpg
Rings bonded to cones and the outer edge taped to the chassis edge to keep them concentric whilst the adhesive dries.
http://i68.tinypic.com/2qnp5zc.jpg
Outer surround edges bonded to chassis flange .
http://i63.tinypic.com/2ewo5g1.jpg
The stiff card trim rings bonded back in place and the chassis flange cleaned up. Job done. They work fine and still measure as they did.
http://i68.tinypic.com/f6uz7.jpg
They can rest for a day to allow the adhesive to fully harden, then go back to Oliver.
Nice job Geoff.
Top notch Geoff, pity I couldn't fix the mid that was open circuit.
There was a very small discolouration of one of the lead out wires, turned out to be a spot of corrosion that had eaten the wire away.
Try as I might I couldn't re-connect to the very short and thin stub of wire remaining.
Posted at the same time Gary. Terminal on the open circuit one. Oliver has ordered some more.
Wow! They look great. Thanks Geoff.
I was concerned they had been beyond help but I needed have worried !
In other driver related news, alan spent some time trying to fix the mid driver but to no avail.a perished wire from the voice coil to the speaker just kept breaking away. A replacement has been ordered from the USA (£55) so should land at the end of the month. Just enough time to get the Caps etc checked I think and maybe give the Cabs a good clean up.
Its turning into a proper project lol
Thanks Geoff, you're the man.
Sent from my EVA-L09 using Tapatalk
To the OP - just a small point. Your pictures show you testing the drivers with your meter on the diode test setting - you'll get better results on the Ohms measurement range.