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amp turning off

i know there are a million other threads about similar situations, but i feel that each one is unique and thus i justify starting a new thread. i have an ashdown little giant 350 running through an 8 ohm eden D210T rated at 250 watts and another 8ohm eden D115 rated at 200 watts. when playing i get through about 3 songs or so it turns off. any advice? my effects chain is fine and power is consistent. any help would be greatly appreciated.
 
Hello refuge4... We gonna need a lot more specifics first to ever get that figured out. (e.g.) what the exact EQ and gain setting on the Ashdown when this shutdown occurs? Has this same problem occurred using different basses? Have ya ever put a multimeter on that D210T to get the exact ohms reading? Those kind of details will be helpful to anyone who wants to tackle this for ya.
 
It's one of three things: either it's defective, or, user error, or the power's not as good as you think it is. So, maybe you have too much low end in the EQ, or you've mounted it in something too small causing it to overheat.
Brownouts or simple undervoltage will cause these type of amps to shut off in a hurry.
 
i have a mid scoop with the bass almost turned all the way up. is that bad? it's most definitely not the bass. that and my effects chain were the first thing i checked. no i have never used a multimeter nor do i even know what a multimeter is. where can i get one?
 
i have a mid scoop with the bass almost turned all the way up. is that bad?
(Facepalm).....Usually, yes. Scooping mids takes away apparent loudness, encouraging you to crank the volume, which makes it get hot. Cranking the bass on top of that makes it even worse.
Mids use a lot less power than lows, and add perceived loudness overall. Maybe try reducing the bass a little, and bring the mids back up a little.
 
Hey, there ya go then... we are 'on to something' here now. "scooped mids" (not the greatest EQ setup).. plus "bass turned almost all the way up" (that will certainly eat up your headroom in a New York Minute).. Your power amp is getting HOT man.. the thermal cut off circuitry is simply performing it's designed job for you.

A multimeter can be had from any decent electronics retail outlet in your area. The setting is "resistance" or "ohms". The reading can be taken off a patch cable plugged in the cabinet if its got a 1/4" mono jack on it. You are looking for the "load" or "impedence" of the 2 speakers tied together inside the cab. This reading from the cab needs to be pretty close to the recommended impedence(s) of your Ashdown bass amp.
 
Is the fan operating... does it cycle on briefly at start up? Is the fan outlet covered up - if it is in a rack, pull it out and see if the problem goes away. Check the voltage at the outlet - is it 120v and stable?

The amp should not take a dirt nap just because you push the bass. In a conditioned environment with room for the fan to work you should be able to push the amp to the limit all day long.