Postby surfnorthwest » 18 Aug 2014, 18:19
No way man, it just is not going to fit. Also you really don't want to butcher up such a nice amp as the 1974.
I would consider having a cabinet builder build you a matching 1x15 cabinet. You can decide to run the amp with the stock 12in and the 15in together or just make the 15in cabinet the same ohms and you can disconnect the stock speaker and go into the new cabinet. A JBL would sound very huge with that amp.
My Gear
Surf's Jukebox
'When I Don't Have Anything Interesting to Play, I just Play Fast' But then who wants to hear 64 bars full of 32nd-notes except the douche-bag blowing them from the stage.