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Post by roly on May 7, 2020 22:19:16 GMT -5
My test speaker is an eight ohm driver.
Super Reverb OT wants to see a two ohm load.
Would it be a mistake to present an eight ohm load to the OT for test purposes?
My work room is pretty small.
cheers Roly
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pdf64
Wholenote
Posts: 556
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Post by pdf64 on May 8, 2020 3:16:04 GMT -5
It’s definitely not ideal.
This scenario will put a lot of stress on the power tubes screen grids at high power levels, and makes it easy to heavily overdrive the power amp, which can cause that expensive magic smoke to appear if something is a bit ropey.
It won’t cause a problem as long as you don’t try to push high power levels out of it. Being in a small room should kinda make that a necessity!
Certainly don’t attempt a full power test, or at least not more than momentarily.
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Post by roly on May 14, 2020 21:17:26 GMT -5
Hi Peter
Thanks for your advice.
cheers
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Post by Vibroluxer on May 27, 2020 20:28:06 GMT -5
How did it work out?
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Bbendfender
Wholenote
Mostly play Fender guitars and amps. I'm 71 and have had a guitar since 1964. Got serious in 1975.
Posts: 216
Age: 71
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Post by Bbendfender on Jun 11, 2020 13:44:10 GMT -5
Any smoke yet?
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avspecialist
Quarternote
Horizontal
Posts: 10
Formerly Known As: avspecialist
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Post by avspecialist on Jun 11, 2020 18:17:18 GMT -5
I have a stock 67 super reverb and I’m always careful with connecting it to the proper load. With high end Solid state like McIntosh amplifiers it will take the mismatch. It also has protection to shut itself down if it gets too hot. My recommendation is don’t do it.
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Post by roly on Jun 12, 2020 13:58:49 GMT -5
Super was an easy fix.
Just had to make room for the cabinet in my tiny work room.
No smoke.
"adjust VR 12 for least smoke"
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