Mark 11A mods

Hi

I've just purchased a 1980 Mark 2A and have searched far and wide here for mods / upgrades etc but everything seems to relate to the very popular C+.

Can anyone assist?

Can the A be upgraded to C+?

How to fix the noisy reverb?

cheers

Here's some I've run across and saved for future reference.

reverb on mkIIA
http://forum.grailtone.com/viewtopic.php?f=27&t=68945#p470607

rework mkIIA to reduce hum and fix reverb
http://forum.grailtone.com/viewtopic.php?f=27&t=54614&start=30#p390365

more on hum reduction
http://forum.grailtone.com/viewtopic.php?f=27&t=54614&start=60#p447622

Mod the lead channel for less mud:
http://forum.grailtone.com/viewtopic.php?f=27&t=63485&p=439258&hilit=mark+IIA+mods#p439258

Mod the Master volumes to give it usable range
http://forum.grailtone.com/viewtopic.php?f=27&t=54614&start=30#p387904

LostHombre said:

Hi

I've just purchased a 1980 Mark 2A and have searched far and wide here for mods / upgrades etc but everything seems to relate to the very popular C+.

Can anyone assist?

Can the A be upgraded to C+?

Click to expand...

Only if you have the proper pc board, like the RP11a. Mesa does not have these anymore, so no.

Is there something about the amp you dont like?I would suggest using the amp for a while and see what you do and dont like about it before randomly doing mods.Dont do mods merely because someone on the internet said its good,tone is so subjective,what sounds good to me may not suit you.After using the amp and getting to know its good and bad points,do mods specifically based on improvements YOU want,not what someone else says it needs.

Thnks for the replies.

I think the lead channel needs brightening a little and the reverb could be a little more "up front" but overall it's a really good sounding amp.

My Mark 5-25 has all the tones sorted out but it also has some level issues switching between tones.

I'll try the lead channel mod and post the results

cheers