Drivers survived


My midrange and woofer drivers survived a serious electronic crossover failure that put over 300 and 500 watts RMS into each of them for about 5 seconds. All LED’s on the front panel of 2 of the 3 amplifiers lit up like a Christmas tree, including the +3db indicators. I thought for sure the midranges were history and maybe the woofers too. I do not have anything but copper wire between all driver voice coils amplifier outputs. Thanks goodness the tweeters did not see that tone at all. I had not thought about a crossover failure…
fiesta75
sometimes the tide and lady luck both roll the right way, 
your lucky day !
Not sure I would trust whatever electronic crossover you're using again. Unless it was user error.
I'm guessing the tone was about 900Hz., yes I got super lucky. Scared the p**s out of me!  I will be ordering upgraded replacement parts, starting with ALL op-amps and capacitors. Haven't decided on the film resistors yet.
Linkwitz-Riley 24dB, 3-way analog electronic crossover. Constructed by me, IC dates codes are 801 X B and 813 B B.
I don't know a ton about these kind of devices, but there are active LR4 boards available from Xkitz that look like they might do the same job; perhaps less fault sensitive than your current solution.
Is it just me or do others see the title and think Hamilton/Verstappen?

Crossover rebuilt using all new parts including resistors, switches removed. TL072 op-amps replaced with LM6172's, sounds great.