my old new alum chassis plexi build

jbzoso2002 · Post by **jbzoso2002** » Tue Apr 10, 2007 10:21 pm

thanks amp dudes i cut the brite cap and amp sounds just
right now

man i cant wait till its broken in.

thanks again for all your help, i never thought in a
million years that i could build my own marshall in my
apt and it would sound this good.

jimmy

wdelaney72 · Post by **wdelaney72** » Tue Apr 10, 2007 11:54 pm

I put a Marstran Dagnall clone in my 12xxx and I have George's in my Metal Panel. Because the amps have slightly different specs and different tubes, I can't accurately compare them, but both are awesome. The only real comparison I have for George's is against the NewSensor crappy OT that Hoffman sells... needless to say, the upgrade was very noticeable.

bluze81 · Post by **bluze81** » Wed Apr 11, 2007 12:56 am

Flames1950 wrote:
bluze81 wrote:Mark I have the dagnall ot, in my 12000 Metro build, but I dont have anything to compare it to, so you really like it better than the mercury output transformer?
Thought that looked like the Dagnall clone in there....no sticker to go by, just the 1.5" core. Not to hijack, but I'd like to play your amp one more time before I send it back Steve.........the Dagnall clone sounds killer in there!!!

play away brother! I thought most of you guys that build amps with Georges stuff had used the Dagnal clone OT? it really sounds killer, I just thought that amp should have more gain on the lower vol, numbers,but I am happy with the tone once its turned up, bluze

rockstah · Post by **rockstah** » Wed Apr 11, 2007 1:05 am

all my clips have been mercury OT.( build #1)
i did post a few with my #2 build with ******'s trannys.
this is my most recent build (#3 )with the metro dag and the dual tap. its killer.

bluze81 · Post by **bluze81** » Wed Apr 11, 2007 1:10 am

I listened to the clip,it sounds really really good! that amp has more of a natural Marshall rock sound,it really breaths,you can hear the 3d depth in there,did you add any effects with pro tool program when you recorded the clip?

rockstah · Post by **rockstah** » Wed Apr 11, 2007 1:14 am

bluze81 wrote:I listened to the clip,it sounds really really good! that amp has more of a natural Marshall rock sound,it really breaths,you can hear the 3d depth in there,did you add any effects with pro tool program when you recorded the clip?

thats it! it has more demension that the merc!

added some reverb after the fact in PT
Mark

Flames1950 · Post by **Flames1950** » Wed Apr 11, 2007 7:23 am

bluze81 wrote:
Flames1950 wrote:
bluze81 wrote:Mark I have the dagnall ot, in my 12000 Metro build, but I dont have anything to compare it to, so you really like it better than the mercury output transformer?
Thought that looked like the Dagnall clone in there....no sticker to go by, just the 1.5" core. Not to hijack, but I'd like to play your amp one more time before I send it back Steve.........the Dagnall clone sounds killer in there!!!
play away brother! I thought most of you guys that build amps with Georges stuff had used the Dagnal clone OT? it really sounds killer, I just thought that amp should have more gain on the lower vol, numbers,but I am happy with the tone once its turned up, bluze

My Super Bass has an early Dagnall clone, but the power supply is the '69 style with lowered filtering -- it still sounds different than the '67.

rockstah · Post by **rockstah** » Wed Apr 11, 2007 10:22 am

Andy, what is meant by a the "power supply is the '69 style with lowered filtering ?

Flames1950 · Post by **Flames1950** » Wed Apr 11, 2007 3:53 pm

I just meant it was the standard '69 amp, with lowered filtering values (50/32/32/16/16 from mains to preamp) and I hacked out the 56K balancing resistors across the screens. Getting rid of those resistors made a noticable difference in the sound of this amp, the ghosting dropped substantially.

rockstah · Post by **rockstah** » Wed Apr 11, 2007 4:03 pm

Flames1950 wrote:I just meant it was the standard '69 amp, with lowered filtering values (50/32/32/16/16 from mains to preamp) and I hacked out the 56K balancing resistors across the screens. Getting rid of those resistors made a noticable difference in the sound of this amp, the ghosting dropped substantially.

gotchay one of my favorite specs right there.

r u using 5.6k on eahc output tube grid or stock 69?

Flames1950 · Post by **Flames1950** » Wed Apr 11, 2007 4:34 pm

I think I've only got the two 1.5K's on that one still.

I hadn't been playing that amp much the last few months, but I've been getting into its sound again lately the last couple of weeks. I added the .68uF boost cap back on it, and it's got a really big "clean" overdrive sound. I'm thinking about 47K feedback resistor instead of the 27K now......

bluze81 · Post by **bluze81** » Wed Apr 11, 2007 7:50 pm

Its interesting how Mark [rockstah]runs his amps with the tone stack 500pf and 33k slope resistor,instead of a 250pf 56k, is that a stock set up Marshall did at one time? bluze

rockstah · Post by **rockstah** » Wed Apr 11, 2007 8:03 pm

bluze81 wrote:Its interesting how Mark [rockstah]runs his amps with the tone stack 500pf and 33k slope resistor,instead of a 250pf 56k, is that a stock set up Marshall did at one time? bluze

33k/500p is superlead spec!

wdelaney72 · Post by **wdelaney72** » Wed Apr 11, 2007 10:04 pm

rockstah wrote:
bluze81 wrote:Its interesting how Mark [rockstah]runs his amps with the tone stack 500pf and 33k slope resistor,instead of a 250pf 56k, is that a stock set up Marshall did at one time? bluze
33k/500p is superlead spec!

assuming split cathode... LOL! Here we go again.

uiovbged332 · Post by **uiovbged332** » Wed Jul 06, 2022 1:56 pm

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my old new alum chassis plexi build

Re: my old new alum chassis plexi build