About the Mark IV Full Power and Tweed Power

[CrazyHeeQing]

what is different?

only the watt is different?

how about the power tube?

full work is 4 ? tweed work is 2?

 

[ryjan]

From my limited knowledge, the tweed mode reduces the plate voltage to the power tubes. It gives the amp an overall more squishy, lush feel. I play on tweed 99% of the time and have NO volume problems. The 1% that I use on full power is when I need to remind my bandmates that giants walk the Earth. :twisted:

 

[Boogiebabies]

The tweed switch lowers the voltage to everything. The power amp, preamp, heaters. The basic principle is less power,
less volume. It's also termed spongy on the Dual Rectifiers.

 

[topcat0399]

From my limited knowledge, the tweed mode reduces the plate voltage to the power tubes. It gives the amp an overall more squishy, lush feel. I play on tweed 99% of the time and have NO volume problems. The 1% that I use on full power is when I need to remind my bandmates that giants walk the Earth. :twisted:

+1

 

[stephen sawall]

http://www.mesaboogie.com/manuals/Mark%204.pdf

It is on page 8 ..... the manual covers the amp very well.