JCM 800 tubes

mazman

Silver Supporting Member
Messages
242
Just bought a 50 watt JCM 800 2204 MKII. What is the tube layout. Never owned a marshall before. Also, what is the best tubes to use?
 

rob2001

Member
Messages
16,927
Not to sound rude but try a search for 2204, 4104, 4010 and 2203. You'll get a MILLION pages on 800's.
 

yougain

Member
Messages
2
This amp put the "harsh" in Harshall. Its bright and brassy unless you put something to "brown" it down. I have some Mullard fx2 EL34 biased in mine and run Mullard 12AX7 in V3 and V2. V1 is home of the gain in this amp and depending on my luck in Ebay, I run a NOS Telefunken, or Mullard. Sometimes I hit it right and grab an RCA blackplate NOS or used and its heaven after the amps been on and played 45 minutes and everything is up to temp. It's like sonic butter!!

All amps have thier own character and you may find other tubes better in yours. My son's JMP sounded aweful with Mullards and we switched back to the Chinese tubes. However in the V1 position we took out the Sovtek and dropped in a NOS telefunken 12AX7 and the amp came alive!!

In an amp with less tubes, the quality and type make a bigger difference. Have fun with your new amp!!!
 

bosstone

Member
Messages
3,396
I have never heard this amp called harsh before??? They're not tame and shy but mine wasn't harsh.
 

JamesHealey

Member
Messages
747
I like using all JJ/Tesla's in my 800.. suits it fine.

Not bothered for buying 30yr old tubes.. seems like a waste.
 




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