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Ampeg B 410HLF cutting out!?


shizznit
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I hope someone will be able to shed some light on this for me.

I killed the Ampeg B 410HLF I use at the rehearsal studio last night. Well...of sorts. The 10" drivers work fine, but the cab cuts out completely when I do anything aggressive, like slap. If I turn the tweeter completely off the problem seems to improve. If I turn the cab down to bedroom volume all is fine.

At first I thought the problem was my amp, but as I live very close to the studios I rushed back home to grab a 210 and I didn't have a problem for the rest of the evening. I tried the Ampeg cab again before I packed up at the end of the evening and it was still knackered. The guy who runs the studio was a little narked and just as clueless as to why this was happening.

What the heck have I done to this cab?

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That's what I thought initially, but I was using an EBS Reidmar which can run at 4ohms. I have used it through my EBS Pro 410 (which is also 4ohm) at full tilt and it can handle it very well surprisingly. That cab has twice the amount of power as the Ampeg. I am thinking that I have buggered up the attenuator crossover somehow, but surely that would only affect the tweeter...not the entire cab? Forgot to mention that we also plugged the house Orange Tiny Terror amp into the cab and the problem still happened.

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I'm popping down to the studio in a few mins to see if we get down to the bottom of this. I feel quite guilty as I was the one who broke it, though the guys down there feel that it is a result of wear and tear from other guys in death core bands that have been thrashing it for the past 12 months. Either way, I feel responsible and I am sure we can both find the fault and fix it tonight.

Thanks for your comments guys. I'll get back to this thread in the morning.

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