My First Build.

[CraigGa]

Looks really nice.
What did you do to eliminate the bleed through?

I made another power node off B+3 to feed the reverb circuit then ended up feeding the input triode from it too.

Craig

[Christmas Shoes]

I noticed you did what looks like a star ground and the Benson Monarch usually grounds to the case through terminal strip mounting legs in a few different nodes.

Any reason you ended up with grounds done this way or is it simply a preference thing?

I’m in the middle of planning my own layout and hope to solve the volume bleed issue in my design. I’m considering trying your power node setup as well.

[R.G.]

I noticed you did what looks like a star ground and the Benson Monarch usually grounds to the case through terminal strip mounting legs in a few different nodes.

Any reason you ended up with grounds done this way or is it simply a preference thing?

I’m in the middle of planning my own layout and hope to solve the volume bleed issue in my design. I’m considering trying your power node setup as well.

I don't know exactly why he's doing it that way, but it probably has to do with some of us beating him repeatedly about star grounding being superior to chassis grounding, random grounding, bus grounding, Zen grounding, and other handy but not well thought out esoterical winding. Star grounding is the only way to get predictably now noise by planning. Other ways involve hunt-and-peck trial-and-error and sheer luck.

I'm not directly familiar with the Benson Monarch, but if it uses terminal strip support legs as distributed grounds, it's exposed to ground noise problems unnecessarily,

[Christmas Shoes]

Good to know! Thanks!

[LOUDthud]

What is that rectifier tube ? Looks like you'd need an extra tall cabinet if you want to remove the tube without pulling the chassis from the cabinet.

[CraigGa]

I don't know exactly why he's doing it that way, but it probably has to do with some of us beating him repeatedly about star grounding being superior to chassis grounding, random grounding, bus grounding, Zen grounding, and other handy but not well thought out esoterical winding. Star grounding is the only way to get predictably now noise by planning. Other ways involve hunt-and-peck trial-and-error and sheer luck.

I'm not directly familiar with the Benson Monarch, but if it uses terminal strip support legs as distributed grounds, it's exposed to ground noise problems unnecessarily,

Thanks for sticking up for me R.G.

It was my first build so I don't know exactly why I did lots of things but I certainly took a lot advice from the knowledgeable folks on here.

I don't think I used any terminal strip grounds apart from the hum balancers on the DC heater supply strip.

Actually I thought my amp was pretty quiet hum wise until I bought a Tone KIng Imperial Mk2, that thing is damn near silent.

Craig

[CraigGa]

What is that rectifier tube ? Looks like you'd need an extra tall cabinet if you want to remove the tube without pulling the chassis from the cabinet.

The rectifier is a CV378 made by Mullard in the Blackburn plant in the 1960's It looks cool doesn't it?
The amp is a combo so the chassis is inverted from the photos so there's no clearance issues.

Craig