simul class question (2:50 or 2:90)

[diego10]

hello!

im planing on buying a 2:50 or 2:90 (if you are selling one please tell me!)

the thing is i currently have a marshall 2x12 cabinet with 70w on each speaker and 16 ohms. im very confused with this ohm thing and also with tehe stereo channels on the power amps. If i connect each channel (using a proper cable since the cabinet only has one imput) on this cabinet will i get a stero sound? please HELP! i really need a lesson on this!
thx!!!
sorry is this has been posted before

 

[mr_fender]

Is your marshall cab wired for stereo (i.e. you can plug into each speaker separately)? With only one input on the back, it sounds like you have a mono cab, unless it has a stereo TRS jack and a mono/stereo switch on the back. You must have a separate speaker load for each channel of the 2:50 or 2:90. They cannot be bridged together like you can with solid state power amps.

 

[Meson Boogie]

First things first, the 2:50 isn't simulclass and simulclass has nothing to do with stereo, it's just the configuration of the tubes in the poweramp.

The ohm thing: this is just the resistance of the speakers. Dunno if you remember the physics you may or may not have done at school, but basically resistances add up in series and add as their inverses in parallel (ie series; Rtotal = R1 + R2,
parallel; 1/Rtotal = 1/R1 + 1/R2).
The speakers in your cabinet will be in parallel so the total resistance will be 8ohms. Plug this into 8ohm poweramp outputs to keep things easy and safe.

As the last reply pointed out, with one input that cab isn't stereo, so unless you buy another cab you wont be able to run a stereo setup. I don't think there are any splitter speaker cables and you still wouldn't have stereo anyway.
I hate to be so patronising, but you do know what stereo is right?