COM port on the back of MT15

[Goran Lorencin]

Hi there guys and gals, I recently purchased an MT15 and I absolutely love it, it is the sound I identify with A LOT and takes pedals like a champ which makes it even more versatile. It is a beast and drives my 2x12 V30 cab in a way like no other amp before ... and with "only" 15 watts.
And I have a question, on the back there are bias contact holes for each power tube and in the middle there is a COM port for which I don't know what it is for. Measuring bias uses a left or right bias port and ground on the the housing of the amp, so is the COM port to be used instead of ground on the housing or is it something else?

Thx in advance for any help

 

[DISTORT6]

Yes. COM is the abbreviation of common.
(Your avatar is great! Those two were hysterical together )

 

[Goran Lorencin]

Yes. COM is the abbreviation of common.
(Your avatar is great! Those two were hysterical together )

Thanks for clearing that for me. And yes, those two were two of the greatest legends

 

[Alnus Rubra]

“fuzzy-wuzzy was a woman!”

 

[Goran Lorencin]

“fuzzy-wuzzy was a woman!”

Indeeeed ... just watched the movie on TV two hours ago ... now there’s a coincidence for ya.

 

[Deleted member 5962]

Yes. COM is the abbreviation of common.
(Your avatar is great! Those two were hysterical together )

Absolutely!

 

[Alnus Rubra]

Indeeeed ... just watched the movie on TV two hours ago ... now there’s a coincidence for ya.

One of my favourite!

Joan Severance is pretty easy on the eye too!

 

[Goran Lorencin]

I totally forgot about her, have not seen her in any recent movies, but her shower scene spiced up my calm TV evening, she hides her assets quite well ... until she reaches for the towel