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How to prevent a class d amp movement in a gig?

Ah. A picture would have been helpful.
PXL_20211204_210400625.jpg
 
I think the combination of 90 degree SpeakOn connector, bar mat, and bungie cord should eliminate all problems (assuming the cab has two side handles for the bungie). All fairly inexpensive, certainly much less than the cost of a replacement amp.

(edit) About the 90 degree SpeakOn connector -- it necessitates the back end of the amp being even with the back end of the cabinet. That way, the cable going directly down has a place to go. But if the amp is not long enough to be even with the back of the amp for the 90 degree SpeakOn connector and be held down by a bungie between two cab handles, I'd go with the bungie. The 90 degree connector works for me, so it's enough. It may not work as well for you.
 
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My drummer knocked over my cab stack (two 2x10 TC cabs stacked vertically) and the bungee held the amp head in place on the top cab. I managed to grab the stack at about 45 degrees before it fell on my basses that were on a stands next to it. A scary moment just before the gig started!
 
My drummer knocked over my cab stack (two 2x10 TC cabs stacked vertically) and the bungee held the amp head in place on the top cab. I managed to grab the stack at about 45 degrees before it fell on my basses that were on a stands next to it. A scary moment just before the gig started!
A drummer knocking your amp onto your basses -- that would be like the trifecta of bad luck.
 
See what you did there...

Started out one of my Amateur Radio buddies grew up with EB in HS. He sold that 7ender Jazz*.

His nephew started out EB W/Ibanez, but moved on to a JB, so buddy has that Ibenez but no Amp. Since my R40 is sitting under my desk at work and hardly ever gets used, I offered it to him to try out until he decides. Went to website to "refresh myself".

Have R100 for home, practice. Even though I rarely plug in my R500, I "want" that R800 hd?!!!

Cheers,

*In 1968, his father saved up to buy him an EB - Fender Jazz. Said sticker was $450, street price $100 off, but dad dickered another $50 = $300. They rang it up wrong @ $200. He sold it recently (brokered anonymous). Took off the neck - Aug 1966, he got $5400 for it....
 
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