Originally Posted by matt76cmich

Could the amp be getting too hot? I know my B54 would get pretty warm when I had it bridged to 6x9s, even when set conservatively aft 150W, but it also never cut out like that. Just a thought.

Originally Posted by Gannicus

I think you should go back in with a DMM and a 1000hz test tone with all settings flat at 3/4 volume and reset the gains at about 28.3 target voltage. Then I would check your battery and charging system to make sure your amp is getting enough juice. More often than not when the speakers are only cutting out at high volume the amp isn't getting enough juice. The way to check is put your bike on a battery charger. I mean a real charger not a trickle charger!! Crank it up and see if it still cuts out. Bike off. Try that and get back to me.

Originally Posted by InthewindMN

Heres something interesting. It cuts out worse when the bike is running than with it off. I hooked a dmm to the battery in on the amp. When the voltage was over 13 it cuts out when cranked. Shut the bike off and it stops cutting out when the volts drop.

Originally Posted by cpbedor

What do you have the accessory/amp turn on tied into? It sounds like the amp is getting up into the party volumes and saying "nope" which then says power supply. If you spliced into the cig lighter wire it's entirely possible that it's not capable of those upper end draws. The solution then is to get this: HD Y adaptor for Rushmore accessory power 69200921 from the dealer and click into the harness that is made to power additional accessories (like an amp draw).

Originally Posted by InthewindMN

If I turn the gains down it stops cutting out, so either I'm pushing it too far or the amp is failing is my guess.