#1
my matamp has an impedance selctor knob and two speaker outs, what i want to know is if, for example it was set to 8 ohms (the options are 4, 8, and 16) would each speaker output have an 8 ohm load? or would it be split between the outputs, each outputting 16 ohms?
#2
no if you use the 8 ohm selection on your amp, you would run 2x 16ohms cabs.
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#3
Quote by andylivingstone
my matamp has an impedance selctor knob and two speaker outs, what i want to know is if, for example it was set to 8 ohms (the options are 4, 8, and 16) would each speaker output have an 8 ohm load? or would it be split between the outputs, each outputting 16 ohms?


if the amp is selected for 16 ohm output then you'd want either
- one 16 ohm speaker cab
- two 32 ohm speaker cabs (never seen these before btw)

if the amp is selected for 8 ohm output then you'd want either
- one 8 ohm speaker cab
- two 16 ohm speaker cabs

if the amp is selected for 4 ohm output then you'd want either
- one 4 ohm speaker cab
- two 8 ohm speaker cabs

the speaker outputs are connected to different taps on the transformer and it will connect the cabs in parallel, so you do the parallel resistance formula

1/Rtot = 1/R1 + 1/R2

and that is where i got those numbers from. btw R1 is the first cab, R2 is the second cab and Rtot is what the amp will see.
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Last edited by gumbilicious at Jun 17, 2013,