Braun L810 Mid Kapoot! Help!

Champ · 31st October 2012, 08:49 AM

I have a fully recapped set of Braun L810's that I did myself. No problems until I messed around with the phase switch on my Krell KSP 7B. I am no longer getting a signal in my Right Channel Mid driver. The 2 7" base drives and the 1" tweeter have no issues. Any thoughts. Have I blown a coil or worse, the driver?

How do I trouble shoot this? Any help would be much appreciated.

bobodioulasso · 31st October 2012, 01:08 PM

I would check the coil using a multimeter or a small battery. If the coil is ok, i would check for a bad solder joint in the crossover or a bad contact in the wiring..

Champ · 31st October 2012, 03:04 PM

Quote:

Originally Posted by bobodioulasso

I would check the coil using a multimeter or a small battery. If the coil is ok, i would check for a bad solder joint in the crossover or a bad contact in the wiring..

bobodioulasso could you please explain how to do this. Am I looking for continuity and or resistance? My build skills are good, but analysis is not.

bobodioulasso · 31st October 2012, 03:24 PM

Simplest way: using some piece of wire, apply brievely an 1.5v battery to the coil terminals (disconnected from crossover).
If the driver works you should hear some click noise from the driver.
If the coil is open you'll get no noise.
Or use an ohmmeter (in ohm x 1) and check for continuity (in reality a few ohms).

31st October 2012, 08:49 AM	#1
Champ diyAudio Member Join Date: Sep 2011 Location: Toronto Ontario	Braun L810 Mid Kapoot! Help! I have a fully recapped set of Braun L810's that I did myself. No problems until I messed around with the phase switch on my Krell KSP 7B. I am no longer getting a signal in my Right Channel Mid driver. The 2 7" base drives and the 1" tweeter have no issues. Any thoughts. Have I blown a coil or worse, the driver? How do I trouble shoot this? Any help would be much appreciated.

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31st October 2012, 01:08 PM	#2
bobodioulasso diyAudio Member Join Date: May 2008	I would check the coil using a multimeter or a small battery. If the coil is ok, i would check for a bad solder joint in the crossover or a bad contact in the wiring..

31st October 2012, 03:24 PM	#4
bobodioulasso diyAudio Member Join Date: May 2008	Simplest way: using some piece of wire, apply brievely an 1.5v battery to the coil terminals (disconnected from crossover). If the driver works you should hear some click noise from the driver. If the coil is open you'll get no noise. Or use an ohmmeter (in ohm x 1) and check for continuity (in reality a few ohms).