Modified Marshall style 36

General discussion area for tube amps.

Moderators: pompeiisneaks, Colossal

Post Reply
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Modified Marshall style 36

Post by jestaudio »

Just thought i,d give you folks a peek at my new project after a few evenings work, at the moment the 12 v relay power board is in situ as well as the power transformer(thats what you call heavy metal :D ) i,ve started work on the power section while i wait for a face plate and a few bits to arrive.
Thanks to those who have chimed in on my previous posts and given good advice
You do not have the required permissions to view the files attached to this post.
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

The side on view of the trannie
You do not have the required permissions to view the files attached to this post.
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

My first go at building a turret board circuit up
You do not have the required permissions to view the files attached to this post.
Alexo
Posts: 477
Joined: Thu Mar 22, 2007 3:27 am
Location: The Hudson Valley

Re: Modified Marshall style 36

Post by Alexo »

Holy mackerel, look at the shafts on those pots! :o
Life is a tale told by an idiot -- full of sound and fury, signifying nothing.

...in other words: rock and roll!
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

Alexo wrote:Holy mackerel, look at the shafts on those pots! :o
Give me a chance ,i havent had time to cut them down yet :lol:
User avatar
NickC
Posts: 1814
Joined: Fri May 14, 2010 1:05 pm
Location: Upstate New York

Re: Modified Marshall style 36

Post by NickC »

jestaudio wrote:
Alexo wrote:Holy mackerel, look at the shafts on those pots! :o
Give me a chance ,i havent had time to cut them down yet :lol:

I'd leave 'em like that. It'll make it easier to adjust the back-line from the front of the stage ...... just reach around .... voila! :wink:
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

NickC wrote:
jestaudio wrote:
Alexo wrote:Holy mackerel, look at the shafts on those pots! :o
Give me a chance ,i havent had time to cut them down yet :lol:

I'd leave 'em like that. It'll make it easier to adjust the back-line from the front of the stage ...... just reach around .... voila! :wink:
More practical advice, if you don't mind though i be a typical pig headed brit and stick to convention :lol: you know how reserved us brits are :D
User avatar
Lynxtrap
Posts: 354
Joined: Fri Feb 18, 2011 12:37 pm
Location: EU

Re: Modified Marshall style 36

Post by Lynxtrap »

Looks nice!
Do you have DC to the heaters? Looks like you didn't twist the wires?
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

Lynxtrap wrote:Looks nice!
Do you have DC to the heaters? Looks like you didn't twist the wires?
i,m trying a variation on the soldano style of heater, not sure if it will work as planned but thtas how i learn :lol:
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

Ok fols had a good push this week end and got it up and running prety much without incident, my first impression is the dirt channel does,nt have as much gain as i anticipated, having a check around it appears this amp is,nt really designed for it, if anyone could make a suggestion for increasing the gain i would be interested, more pics to follow in a few days
myfoot
Posts: 36
Joined: Tue Mar 25, 2008 8:19 pm

Re: Modified Marshall style 36

Post by myfoot »

There's about a 300 page or so thread over at Metro amp. Here's a link to the page with some layouts and schematics:
http://forum.metroamp.com/viewtopic.php ... start=2085
User avatar
Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: Modified Marshall style 36

Post by Structo »

Do you have any tubescreamer or overdrive type pedals?
You probably just need to goose the input a bit.
Tom

Don't let that smoke out!
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

Structo wrote:Do you have any tubescreamer or overdrive type pedals?
You probably just need to goose the input a bit.
Yeah, ,i've got a Lovepedal Kanji, sounds pretty impressive, i had a chance to wind it up a bit today(no nieghbours or wife) and once you crank it up a bit its got a fair bit of gain, pretty close to a jcm, just got to sort the channel switching and the Preamp lift for the clean channel.
Effects loop should be in tomorrow, just got to decide if its worth fitting a dumblator type circuit minus the bright switchs.
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

Latest pics from the amp, nearly finished now, just a tidy up and a tweak before it goes in its shell[/img]
You do not have the required permissions to view the files attached to this post.
jestaudio
Posts: 654
Joined: Sat Mar 12, 2011 4:12 pm
Location: UK

Re: Modified Marshall style 36

Post by jestaudio »

Quick update for those who have been kind enough to chip in with various bits of help, i played around with a gain stage in place of the cathode follower, not a good move :oops: afetr reinstating the cathode follower i changed the supply resistors from 100k to 22o wiyth the appriate cathode resistor and added some tropical 2 uf bypass caps , got a fair bit more gain and so far i,m liking it, scored a Marshall Celestion for pennys on evilbay :lol: i suspect it will compliment this circuit mre than my RCF cab which is normally paired with my D clone
Post Reply