Alexander

[Bob S]

My fingers are fried - this thing is fun.
Some specifics :--
Cheap Weber chassis - thanks to Mark Fowler for the info.
TW power transformer, Weber jtm45 OT, 20H choke.
I was tinkering with 100/200k switchable on V1a anode for a gain boost.
Changed it for stage 3 cathode 220uF bypass switchable.
220uF ??? Doesn't make sense but it works.
Jana's 3rd stage input level on a switch.
Martin's Presonance - I may never use a standard presence circuit again.
Fixed bias - running around 47mA on E34L's at 409v plates.
There's a couple of extra holes - this thing will get relays / footswitch.
Thanks to all you guys & gals who got me to a point where this is possible.
I likes this thing.
Did I mention that its silent ?
Alexander the Axe Murderer.

[Bob S]

One last pic.
I grounded the filament ct at the incoming ground point.
Along with the HV ct, bias supply & speaker jacks.
The screens ground is separate.
The pre-amp is grounded close to the input jack.
I ran separate grounds to each pot.
Bob

[Bob S]

Oops - forgot -
64uF Resevoir
32uF screens
20-20-20uF pre-amp
Dropping resistors are 20k-10k-10k.

[Reeltarded]

That won't work! It buzzes! You're deaf! It's not plugged in! Bad speaker!



Needs an Izod logo. Looks great!

[Bob S]

Reeltarded says
" That won't work! It buzzes! You're deaf! It's not plugged in! Bad speaker!"

This from the guy who encourages me & generally keeps me off the straight & narrow.
Thanks Bruv.

[Blackburn]

Very cool build, dude. What brand are those resistors in there? Much more tootsie roll looking than the traditional CC look.

You may need to provide a clip to show us all how quiet she is...

[Reeltarded]

The secret is in that single Dale.

Apparently the noise all comes from the slack side of the PI.

[Bob S]

Might be these from Mouser.
594-5083NW100K0J
2w metal film Vishay
Not 100% sure...
Didn't have the same make in 82k, hence the noise cancelling Dale on the PI,
Reeltarded figured out my secret recipe for a zero noise floor.
Or even a hack can get lucky.
My guitar slinger should get some clips this week.
The silent bits will actually be me on guitar.
He'll just fill in the gaps.

[Reeltarded]

Reeltarded figured out my secret recipe for a zero noise floor.

Or even a hack can get lucky.

Yeah! I was just guessing!!

[M Fowler]

Great build Bob I really like your wiring and layout on this

Mark

[ampmike]

Bob,that amp is really cool build,the fact you built it without a drawing or layout,are you you didn't work for Marshall back in the day?Thats a impressive build buddy,I wish I could try that amp.Have fun,two weeks of playing that and your fingers will be fine tuned and tough as leather.

[Noval_novice]

What chassis is this? Weber 6Mx? Looks awesome!

[Bob S]

Yup 6Mx - $30 from Weber.
Some extra holes needed, but no biggy.
Saves some $$

[cbass]

Looks cool.Bet it sounds awesome!

[Noval_novice]

Cool! You have given me an itch to make a plexi-style build in that chassis.