Power Attenuator
Guitar cabs and attenuators?
I'm going to get myself a marshall vintage modern head, I'm also probably gonna get a 2x12 because it's easier to carry around. I'm just wondering about power attenuators, I'm going to use the THD hotplate but say I upgraded to a 4x12 halfstack or a fullstack would I need another hotplate?
I just found some info the 2x12 is 8ohms and the 4x12 are either 16 or 4. I also read that if I was to use two seperate cabs with the hotplate, the hotplate should be half of the cabs inpedence. So in conclusion I believe I could get a 8 ohm and a 4/16 ohm attenuator and cover all the ways. Please correct me if I have it wrong
One more thing if I was to have two 16 ohm each cabs going through a 8 ohm hotplate would I set the amp to accept 8 ohms?
1) Yes, to match up to the single 4 x 12 cab.- but it would match up to both the 2 x 12 and 2 of the 16 ohm 4 x 12 cabs.
2) You would need to get either the 4 ohm or 16 ohm Hotplate to match up to a single 4 x 12 cab. Unless you changed the speakers inside the cabs to 4 x 2 ohm speakers in series or 4 x 16 ohm speakers in parallel, or 4 x 8 ohm speakers in series/parallel. Your cab impedances would match then. 8 ohms.
3) 2 x 16 ohm cabs, in parallel (the way the Hotplate is wired) is 8 ohms - yes, set the head to 8 ohms.
Edit: I see some 8 ohm 4 x 12 Marshall cabs. MG412A and AVT412XA. So, there's your solution. One 8 ohm 2 x 12 cab, one 8 ohm 4 x 12 cab, and two 16 ohm 4 x 12 cab. One 8 ohm Hotplate. Or, get the 16 ohm Hotplate instead of the 8 ohm 4 x 12 cab.
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Rivera Rockcrusher w/ 1972 Marshall Super lead. Why use a power attenuator
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