help me you caliber .50 gurus

[maicolp]

hi guys, i'm new here. i'm really happy to have found a community that loves mesa/boogie.
just need your help:

i would love to know how to identify birth date of my amp a mesaboogie caliber .50 series
serial number SS5568

and i'm trying to change preamp tubes... but there are 5
wich is wich?
where's v1 v2 v3 v4 v5?
i know that i have a 12at7 to put into the reverb circuit but... where is it?

hope to hear something asap because i'm in need to play my amp!!
thank you

 

[scottcrud]

Hey, welcome aboard. You'll have to turn your boogie upside down, and look on the chassis, there should be a hand written date, written in black marker. V-1 is closest to your amps input, controls the lead channel mostly. V-2 is next and controls the clean channel. V-3 also controls the lead channel. V-4 is your reverb driver, you can use a 12aT7 or 12ax7. V-5 is the phase inverter and you can use a 12ax7 or 12at7, good place to experiment. Good luck and enjoy your amp.

 

[bartchamdoh]

Actually the date for your amp is on the chassis above the controls in red ink, you,ll have to remove your amp from the cab to see it!