B-52 AT100 Schematic

[rf7]

Does anyone have a schematic for one of these amps? B-52 is not getting back to me at all.

[Enzo]

Really? Last time I contacted B-52, they had the schematics I wanted to me the next day, along with troubleshooting suggestions, and they even followed up on me.

meanwhile i do have that one.

Tube order across the chassis is V1-2-3-4-10-11-5 then the power tubes and recto, V6-8-7-9-12

[drewl]

Figures, I've fixed two of these and now a schem pops up.....
Thanks again E, I'm ready for the next one!

[rf7]

Thanks Enzo! I emailed them and left a phone message, but got no response.

[tonal_idiot]

Thanks for the schematic post. My son's distortion channel died this evening. The clean channel is ok apparently but nothing from the distortion channel. Hopefully with the help of the schematic I'll be able to figure it out tomorrow. Thanks again!

[dtaw]

Figures, I've fixed two of these and now a schem pops up.....
Thanks again E, I'm ready for the next one!

What kind of problems did you run into on these amps?

I was looking at the schematic, because someone in my area wanted to replace the power tubes and I was thinking with a 1K bias trim pot there is hardly any room for adjustment on this amp, or am I missing something?

[heavyrocks]

Enzo, major thanks, I've been looking for this all week.


The problems this amp has given me over the past two years:

Power supply burn out
Handle ripped off top
Reverb - when new, sounded weak (when turned to 10 sounded like it should be at 2), recently cut out all together

Make no mistake, this it a $700 head. Good for the price, but I would save up and get a Mesa if it got stolen/lost/broken beyond repair

[Psopho]

Does anyone know the specs for the power transformer? I have one with a blown power transformer and apparently I'm looking at about $800NZ to replace it!

[heavyrocks]

$800 for the transformer? I paid $800 for the whole head.

[Enzo]

Do you live in New Zealand though?

[heavyrocks]

ahh yes, that would make a difference, wouldn't it

[Psopho]

Yip, that's $800 New Zealand Dollars. Currently equates to $450US and 350Euro

[heavyrocks]

Ehh, that still aint cheap. That heads been nothing but trouble for me, it just started getting really quiet on me a week ago. Something in the power supply section but I haven't narrowed it down yet.

[Amp Kat]

One of the best sounding amps out there but they are just a pain to keep going. One of the problems is the connectors or not good at making contact and open up during playing. Look at those real good especially the speaker jack.

[heavyrocks]

no doubt, the tone's delicious, the construction is where all the cost-cutting happened