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> Marshall Jcm800 Clone, Jer's DIY amp project
jer
post Dec 26 2008, 02:15 PM
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I had mentioned elsewhere that I just finished my homemade Marshall JCM800 amplifier.

This is a project I started in July 2008 and it was 100% finished on Christmas Day.

My friend Dave and I each built one. He built a JTM45 clone prior to this project and having already gotten one under his belt was confident to give it a second go. I followed his lead and pretty much did as he did. So a lot of the technical knowledge that goes into this escapes me. I have discovered the the internet houses a TON of info on making these homebrew clone amps. One such example of a place to get EVERYTHING you'd want/need to get this done is Ceria Tone Amplification.

http://www.ceriatone.com/

We went the more custom route and after deciding on our schematic ordered all out parts from either Tube Depot or Tubes & More


http://www.tubedepot.com/

http://www.tubesandmore.com/

A GREAT site that explains all of this kind of thing is Joe Popp's page. Check it here and follow his journey of buidling his own Marshall. http://www.joepopp.net/jcm800.htm

I tracked my journey (somewhat) at my site www.Metalfrets.com You can see that thread here. There are lots of pics.

http://www.metalfrets.com/fretboard/index....msg1642#msg1642

Anyway, this thread is for those whose interest has been piqued by the idea of building thier own amp. I'm now in the process of burning the amp in and getting some hours on it to make sure its stable and working properly at operating temperature.

I created a quick recording of the type of song that I'm targeting tone-wise. Any 80's metal head will recognize this clip. It was recorded with my Digitech GSP-1101 using a patch I made to emulate the Marshall JCM800 80's metal tone. Its ran direct into my PC and recorded in Sonar. Nothing was added in Sonar. Just the drums and bass of course. I use T-Racks 3 to master the mix. I'm no wiz here though. I chose a preset I liked and ran it through that. Anyway, this is the benchmark to compare the new amp to. Once I figure out how to mic it up correctly I'll re-record the clip using the new amp.

1 guitar in the clip is my Jackson DK2M. One is my Epi LP Standard. I used the same tone on the R and L. One thing I dont like about most modelers is that they dotn let each guitar keep their charactaristics. Does a Jackson sound just like a Les Paul? I dont think so... But this clip wouldnt say that. They sound remarkably similar.....


www.jershangout.com/files/uploads/temp/Balls-GSP.wav

Attached Image


--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
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opeth.db
post Dec 26 2008, 02:21 PM
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Beautiful. It sounds kick ass!!! smile.gif


--------------------
My Gear
Ibanez RG570 Silver
Jackson Ofset V Randy Rhodes Signature
Mitchell Acoustic
Custom Ibanez S series (Currently working on)
X2 XDS95 Digital Wireless system
Line 6 MKII
8 Channel USB Roland Mixer

My Site
www.shredwork.com

Learn how to count. It's what separates the hack and the pros IMHO. -LCSDDS
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jer
post Dec 26 2008, 02:27 PM
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I haven't recorded the new amp yet. What you are hearing is my Digitech GSP-1101.



http://www.digitech.com/products/multi-effects/gsp1101.php


--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
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opeth.db
post Dec 26 2008, 02:30 PM
Post #4


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Oh yea. You did say that! DOH! unsure.gif


--------------------
My Gear
Ibanez RG570 Silver
Jackson Ofset V Randy Rhodes Signature
Mitchell Acoustic
Custom Ibanez S series (Currently working on)
X2 XDS95 Digital Wireless system
Line 6 MKII
8 Channel USB Roland Mixer

My Site
www.shredwork.com

Learn how to count. It's what separates the hack and the pros IMHO. -LCSDDS
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jer
post Dec 26 2008, 02:38 PM
Post #5


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tongue.gif

Thanks though!

I am quite happy with the Digitech unit too. With the band I use it with a Carvin 50x2 EL34 based amp into a Peavey 5150 4x12 cab. Sounds great.

This new amp is a completely different animal. I hope I can capture is with mics. I'm a rookie of the highest order when it comes to micing cabs.





--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
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Ivan Milenkovic
post Dec 26 2008, 03:35 PM
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I think that amp looks beyond awesome mate! You really got some talent! Very neat indeed! smile.gif I use 2 JJ E34L's as well in my TSL601, they sound very good, good choice. Can't wait for the samples ! smile.gif


--------------------
- Ivan's Video Chat Lesson Notes HERE
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- Let's be connected through ! Facebook! :)
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jer
post Dec 26 2008, 03:46 PM
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Thanks Ivan,

It is fun to look at. Like a piece of art in a way.

Art that will MELT FACES!!!!

Mwuhahahahahahahahahahahahahahhahahahahaa!!!!!

cool.gif


--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
Go to the top of the page
 
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Ivan Milenkovic
post Dec 26 2008, 04:19 PM
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QUOTE (jer @ Dec 26 2008, 03:46 PM) *
Thanks Ivan,

It is fun to look at. Like a piece of art in a way.

Art that will MELT FACES!!!!

Mwuhahahahahahahahahahahahahahhahahahahaa!!!!!

cool.gif


I share your excitement mate! I bet you can't wait to crank the beast! biggrin.gif


--------------------
- Ivan's Video Chat Lesson Notes HERE
- Check out my GMC Profile and Lessons
- (Please subscribe to my) YouTube Official Channel
- Let's be connected through ! Facebook! :)
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UncleSkillet
post Dec 26 2008, 04:49 PM
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Ahh that is a very cool project! Looks very cool. Congrats mate smile.gif

You Digitech unit sounds really good.

I can't wait to hear what you head sounds like. Just curious if you have plains to build a case around it for protection?


--------------------
"Think of a guitar solo as a paragraph. You need a clear beginning, a middle, and an end. Look at musical phrases like sentences, and make sure you break them up using punctuation—or space. You pause naturally when conversing, right? If you don't, you'll bore the listener. The same thing will happen with your audience if your solo is one dimensional. You'll wear them out and lose their attention." —Tom Principato
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jer
post Dec 26 2008, 05:00 PM
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Yeah, we'll be building a case at some point. If its gonna leave the house it needs a case!!!!



--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
Go to the top of the page
 
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opeth.db
post Dec 26 2008, 06:49 PM
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I can't imagine this not being a GMC wiki article? smile.gif


--------------------
My Gear
Ibanez RG570 Silver
Jackson Ofset V Randy Rhodes Signature
Mitchell Acoustic
Custom Ibanez S series (Currently working on)
X2 XDS95 Digital Wireless system
Line 6 MKII
8 Channel USB Roland Mixer

My Site
www.shredwork.com

Learn how to count. It's what separates the hack and the pros IMHO. -LCSDDS
Go to the top of the page
 
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jer
post Dec 26 2008, 06:59 PM
Post #12


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I dont really know enough about it to pen anything educational.



--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
Go to the top of the page
 
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ChrisVdS
post Dec 26 2008, 08:04 PM
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Nice eddies on the background man - Iron Maiden rules! smile.gif
The amp is nice and shiny, good job.

This post has been edited by ChrisVdS: Dec 26 2008, 08:05 PM


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Gear:

Fender "California series" stratocaster
Roland Cube 20X
Peavey Envoy 110
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jer
post Dec 26 2008, 08:06 PM
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Thanks!!!

You cant see it in the pic but hanging from the ceiling above the amp is a 3'x4' tapestry of "The Trooper" too.


--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
Go to the top of the page
 
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Xuestor
post Dec 26 2008, 08:40 PM
Post #15


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From: Sweden
Member No.: 29



It's never wrong to blast some Accept!!!! Sweet sounding modeler though!


--------------------
Gear:
Epi LP with SD SH-2/SD SH-6
Gibson Custom Shop Les Paul Standard VOS Bourbon burst
Gibson Les Paul Classic Antique Vintage Sunburst
Gibson Les Paul Standard Faded Tobacco burst
Fender Stratocaster Antigua with Stan Hinesley Karma/ Stan Hinesley EXP/ Dimarzio Protrack
Jem 7VWH
Fender CD160NT 12-string
Ibanez AW40NT 6-string
Martin 000X1 6-string
Hughes & Kettner Switchblade Head with 2*12 Celestion Vintage 30's Cab


Grammatic Professional auf Schweden
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jer
post Dec 26 2008, 08:43 PM
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Thanks!

I love that Digitech unit.

I'll be using it into the fromt of the new amp too. Just without the modeling. Its got some nice stompbox effects in it.


--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
Go to the top of the page
 
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audiopaal
post Dec 27 2008, 12:32 AM
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Looks awesome, congratulations smile.gif
Awesome Maiden figures as well biggrin.gif
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Tolek
post Dec 27 2008, 12:36 AM
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Awesome job! Congratulations. I can´t wait to hear the sample. smile.gif
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UncleSkillet
post Dec 27 2008, 12:38 AM
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QUOTE (jer @ Dec 26 2008, 02:43 PM) *
Thanks!

I love that Digitech unit.

I'll be using it into the fromt of the new amp too. Just without the modeling. Its got some nice stompbox effects in it.


You mean you didn't build an effects loop into it? I am surprised huh.gif

That would give you much better over your tone that way.

This post has been edited by UncleSkillet: Dec 27 2008, 12:38 AM


--------------------
"Think of a guitar solo as a paragraph. You need a clear beginning, a middle, and an end. Look at musical phrases like sentences, and make sure you break them up using punctuation—or space. You pause naturally when conversing, right? If you don't, you'll bore the listener. The same thing will happen with your audience if your solo is one dimensional. You'll wear them out and lose their attention." —Tom Principato
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jer
post Dec 27 2008, 03:55 AM
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I definitely wanted to.

Very much so.

Dave didnt find a schematic that had one that didnt take the tone out of the path of the tubes though. I dont know a lot about it, but according to him, one dirty little secret about a lot of tube amps is that the FX loop is somehow put into the solid state realm.

He's a tube snob of the highest order so he wasnt having any of that.

smile.gif

(Dave is the brains behind this, I followed his lead. I know more than I did before building it though... And I'll know even more next time!)


--------------------
My Gear

Jackson SL-1 USA Soloist
Jackson DK2M
ESP LTD MH-400
ESP LTD EC-1000
Ibanez Custom S-Series
Martin 001 Acoustic

Handmade Marshall JCM800 50watt head (with mods)
Carvin 50x2 Stereo Tube Amp
Boss GT-10 Preamp/Effects Processor
Digitech GSP-1101 Preamp/Effects Processor
Behringer FCB1010 Midi Controlled Floorboard
Behringer Dualfex EX2200
Behinger Stereo EQ
Line 6 POD with 2.3 upgrade
Line 6 Floor Board
Line 6 Spider III Practice Amp
Nady UHF Wireless


"Who will eat the decay, when the worms have lost their sight?"
Go to the top of the page
 
+Quote Post

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