fixing a blown tweeter S408 by Mackie

[sabianq]

My tweeter blew on a gig, totally sucks :mad:

so i called Mackie, the cab was under warranty i tole them what happened and they sent me a tweeter for free.

well it shows up in the mail today, no instructions, just a tweeter (HF voice coil or HF driver), what ever you may call it.

it was wrapped quite well in bubble wrap so i took it out and proceeded to replace the driver myself.
I photo documented what i did in case anybody else might want to reference this surgery.

here goes>>>>


http://i154.photobucket.com/albums/s252/sabianq/DSC05010.jpg

http://i154.photobucket.com/albums/s252/sabianq/DSC04986.jpg

http://i154.photobucket.com/albums/s252/sabianq/DSC04989.jpg

http://i154.photobucket.com/albums/s252/sabianq/DSC04987.jpg

http://i154.photobucket.com/albums/s252/sabianq/DSC05007.jpg

http://i154.photobucket.com/albums/s252/sabianq/DSC05000.jpg

http://i154.photobucket.com/albums/s252/sabianq/DSC05001.jpg

http://i154.photobucket.com/albums/s252/sabianq/DSC05003.jpg


next the test...

[sabianq]

the ohm reading for the blown driver reads 0

http://i154.photobucket.com/albums/s252/sabianq/DSC05004.jpg

the ohm reading for the good new one reads 6.1

http://i154.photobucket.com/albums/s252/sabianq/DSC05005.jpg

[sabianq]

yep, is blown

[sabianq]

then i reversed the process.

the wrench size to pull the bolts off the voice coil attaching it to the horn is a 8 mm

http://i154.photobucket.com/albums/s252/sabianq/DSC05007.jpg

they are self alining

[sabianq]

here is a shot of the crossover

http://i154.photobucket.com/albums/s252/sabianq/DSC04991.jpg

[sabianq]

these cab's are built very well

http://i154.photobucket.com/albums/s252/sabianq/DSC05017.jpg

here is a shot of the input circuit board (very simple) these cabs can eaisly be modified to run with an active crossover should the internal passive one fail.



http://i154.photobucket.com/albums/s252/sabianq/DSC04996.jpg

[sabianq]

over all, Kudos to Mackie for making a great product and having excellent customer service.

[woofersus]

I've performed a similar procedure on an EAW cab before (drivers also made by RCF) If you ever burn a voice coil on that and it's out of warranty, you can actually take the HF driver apart and replace the voice coil. Very different from some molded plastic HF drivers I've seen. *cough*...Peavy...*cough* Great move by Mackie buying RCF. Top notch stuff.

[sabianq]

i agree with you, the RCF stuff is superior, the voice coil on the tweeter is accessible via 4 star headed screws on the back and 4 phillips screws on the front.

I intend on picking apart the old driver and voice coil to see if i can just replace the coil.

ill post pictures of the surgery when i get around to doing it.

[amradioguy]

kudos to you sabi I have a the art 500s this may come in handy