Metropoulos Forum

I have seen so many different versions on a theme and have gotten quite confused.

Could someone with a little more knowledge please tell me if this is correct or not? Or if it could be improved in any way???

I'm looking at gut shots but it can be slightly tricky to follow the wiring. Is the above correct for 68/69 period? Whats the snubber value? I dont think its .22uf?

The 68/69 version looks really interesting, I'd like to try this in the future.

For this build the more I look at it I'm really building more of a 70/71 amp. I had already staked the board for two snubbers and cutting it back could be risky. Plus I'd already cut a hole on top for the preamp filter and the switches I ordered are DP/DT.

Just need to know if I'm doing it right as in the first diagram. I've tried to figure it out but It's hard to be 100% sure from photographs, the only lay outs I've seen with snubbers is the 100watt and that's a slightly different rectifier set up. I've got no 50watt lay outs with 2 snubbers to reference.

Anyone?

Connection 10 - 11 is that right? Snubbers to ground??

And is it from 16 - 17 or 16 - 19? Diodes to fuse carrier or diodes to mains filter??

Bump?

Use this schem and apply to your layout:

http://drtube.com/schematics/marshall/1987u.gif

Only take bias feed from hot side (PT HT) of the standby switch

Thanks neikeel I think I've got it.

I need to go from diodes to filter can to fuse to O.T /choke.