The sunn Forum
Sunn Musical Equipment => Q & A => Topic started by: stockcar1414 on October 23, 2006, 08:01:57 pm
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hey guys, just a couple days ago I bought a second gen model t made around 1975. I also bought a marshall jcm 900 1960B 300 watt cab that I'm running it through, and I had a question about running the amp in stereo. To run the amp in stereo i have to use both outputs from the back of the head right? The clean channel sounded distorted when I ran it through just one side of the cab, but when i plug into both inputs on the cab the clean sounds perfect. My main question however, is what should I set the ohm selector swithc to on the back of the head? One input on the back of the cab says 16 ohm while the other says 4 ohm. Underneath the inputs on the cab though it says 8 ohm left and 8 ohm right, so would I set the selector switch to 8 ohms on the head if i run the cab in stereo??
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The model T is not a stereo head. It only has one power amp and the two speaker output jacks are wired in parallel.
Using either one of the 4 or 16 ohm input to your speaker, set the impedance selector to that value - meaning 4 for 4, or 16 for 16.
You could run two speaker cables from the head into the 8 ohm stereo inputs. If you want to do this set the impedance selector to 4 ohms. But notice this is not stereo and is really not much different than using the single 4 ohm jack.
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oooh ok, thanks a lot for the help! That's interesting because a friend of mine was saying that if I didn't plug both in, then only two speakers in the 412 cab would be utilized. But the one thing is that for whatever reason the clean channel sounds much better when I have both plugged in as compared to just plugging one in.
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switch your cab from stereo to mono. use one cable. there is no reason to be in stereo if you don't have a stereo amp setup.
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alright i'll try it then, thanks!