Runing a 2:90 in HALF alwys.

[trippy]

Hi you all.
Just mounted in my rack a shiny brand new 2:90, my god what a sound !
Anyhow, this thing is a volume monster, and sure I can run it in "HALF".
My questions are:
1. What exactly happens inside the amp when runing in HALF ?
2. Can I damage the amp if I ALWAYS run t in HALF mode ?
Thanks.

 

[zodiac272]

You are talking about using the half drive switch or only using one channel?

yes I'm sure the half drive switch is safe all the time. probably engages a limiter in the circuit

if you are only using one channel, turn the unused volume all the way down and the presence all the way up

scott

 

[elvis]

In the 50/50 half power limits the preamp drive voltage so it can't push the power stage as hard. I would assume they did a similar thing in the 2:90, but whatever they did would have been designed for constant use.

With the preamp drive limit, the power tube bias is unchanged, so tube wear is not reduced.

 

[trippy]

Thanks for answering.
Yes, I would like to run it in HALF drive when it is running @ 50w per channel in stereo (I'm using 2 cabs).
I will use it always in HALF mode since it is impossible to control the beast @ home when it unlashed on its full 2:90.
This thing is so powerful.
I will use a tip to ground short circuit PL plug in the back of the drive.

 

[robguitargod1]

Won't hurt a thing.