Mesa Boogie .50 Caliber Plus Schematic

[Chevy]

Hi all,
Would anyone have a proper schematic for this amp? I have the amp, and would like to know how the effects loop send/receive circuitry is configured. There's a hand-drawn 2 part schematic floating around out there, which I have, but it doesn't show the full effects loop, nor the EQ footswitch wiring... which makes me wonder if the rest of this schematic is right, too...?

Thanks much!

[QJerry]

here you go

[Chevy]

here you go

Thanks, but that's not the .50 Caliber Plus (6L6) model, that's the 6BQ5 model.

Anyone?

[OMguy]

I had one of these in last week and I tried to draw out a little more detail on the reverb circuit. The unit would take about one hour to act up and if you took any voltage readings on the 12at7 it would snap into working again! After about three days and replacing several parts on the board (to see if i could find the bad part this way), I found out it was the wires leading to the output side of the tank (the 200ohm windings) were cracked (flaky connection) probably due to vibration.

[doctor]

I had one of these in last week and I tried to draw out a little more detail on the reverb circuit. The unit would take about one hour to act up and if you took any voltage readings on the 12at7 it would snap into working again! After about three days and replacing several parts on the board (to see if i could find the bad part this way), I found out it was the wires leading to the output side of the tank (the 200ohm windings) were cracked (flaky connection) probably due to vibration. [ATTACH=CONFIG]14426[/ATTACH]

I hope this help

[soundguruman]

Thanks, I needed that. Nice Job.

[alancath]

Chevy: Did you ever get the schematic for the Mesa Boogie .50 Caliber Plus?

or anyone else... do you have it?

Thanks!

[soundguruman]

Chevy: Did you ever get the schematic for the Mesa Boogie .50 Caliber Plus?

or anyone else... do you have it?

Thanks!

Mesa 50 cal+.doc
Microsoft Word document, that's wat I have.

[Chevy]

here you go... schematics

[augustin01]

Hello, can you give me mesa boogie .50 Caliber Plus (6L6) model schematic? Thank you very much

[flyingdutchman]

Here's the MB .50 Cal+ schematic redrawn by yours truly. It was copied from typical rough hand-drawn schematics that float around on the 'net. I can't guarantee it is 100% correct, but I haven't noticed gross discrepancies thus far.

Indicated voltages are to be taken with a pinch of salt.

Component numbering is the default numbering of my schematic editor (eagle), it does not correspond to the identifiers (if any) present on the amp's circuit boards.

mb_50-caliber-plus.pdf

[augustin01]

Thank you very much, I hope to be okay, because I'm not a specialist.

[augustin01]

The link is not working.

[Chevy]

here you go

Hello, can you give me mesa boogie .50 Caliber Plus (6L6) model schematic? Thank you very much

here you go

[g1]

Here it is again, original in doc format.