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02-11-2012, 07:54 PM
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#91 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
Well Greenbacks break up nicely with an amp like this. Helps warm things up.
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped!  Joey's bring'n sexy back! Quote:
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02-11-2012, 09:46 PM
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#92 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
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Re: my '79 JMP 2203 project
Smashed what preamp and power tubes do you have in yours? You can warm it up some more with the right tubes if you find it harsh.
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-11-2012, 09:50 PM
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#94 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
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Re: my '79 JMP 2203 project
A cab/speaker can really help with harshness. Are your tubes fresh or old?
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-11-2012, 09:52 PM
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#95 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
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Re: my '79 JMP 2203 project
I just noticed your dog watching you in one of your vids.LOL
A fan for life!
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-11-2012, 10:25 PM
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#96 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
Ok I went back and read more and you have tubes in it that aren't old and were working fine in your DSL. There are 2 tube threads on the forum one power the other preamp if you ever want to fine tune it some more.
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-11-2012, 10:40 PM
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#97 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
he is the best dog ever lol... I have jj preamp tubes in it, I haven't heard good things about those... power tubes are groove tubes (minus the one that crapped out on me, I swapped it with a good el34 with no label, I re-biased it afterwards and all is well)... I was thinking and i'll bet that one tube went bad when I dropped it about 5" onto the wood of my cab when I was taking it out of my DSL....
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02-12-2012, 11:33 AM
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#98 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
Here is my setup now, Huge difference! I guess having the cab
on top of the dresser was a bad idea, I was losing all kinds of bass I didn't know was there! This is a more open area and I can play it with the MV past 3 and it doesn't kill my ears... night and day difference! I'll try to get a recording of it later.... It's still a little harsh, but much better! 
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02-12-2012, 11:36 AM
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#99 (permalink) | ||
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Senior Member
Join Date: Aug 2008
Location: Wetville
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Re: my '79 JMP 2203 project
Quote:
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-12-2012, 01:24 PM
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#100 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
thanks, I think I am going to do one more "preventive maintenance" thing to the amp... The big screen resistors(1000ohm 5 watt I think they are) look original and the rubber on them looks a little worn, they look like they have seen better days... going to swap them all out with new ones...
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02-12-2012, 01:48 PM
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#101 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
MV:3. preamp:7
Gibson Les Paul Special I brought back from the grave, 490R neck, 500T bridge. recording starts with neck pickup and I switch to bridge pickup along the way. Recorded with a Sony handheld so the quality is not the greatest, not sure if you can hear the difference or not... (sorry for the playing lol) |
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02-12-2012, 06:15 PM
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#102 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
I just woke up. I work the graveyard shift so I sleep part of the day.
So you are hearing alot more lowend now compared to before? I say its time for a 412 loaded with GB's to go with that LP/amp combo.  Loved the Fairies Wear boots/Jack the Stripper. Love the SAbb's. Do you have a boost pedal to hit the front end with? These amps respond to it so well. Using my EMG's I get great saturation and then roll off guitar volume for a more classic rock tone to a pretty decent clean. I have never had that guitar sound as good. EMG's aren't my thing but hey they are showing some dynamics with this amp. Still I prefer passives for a better range.
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-12-2012, 06:29 PM
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#103 (permalink) | ||
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
Quote:
Preamp Tubes? - Who, What, When, Where, Why, and How? Power tubes?? Who, What, When Where how??
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-12-2012, 07:28 PM
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#104 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
thanks, I'll check out the links. I'm pretty happy with it now, I'm sure I'll find a combination of things that will get me where I want, hell of a place to start I'm grinning from ear to ear. I'm a little confused where I want to go lol.. I like all kinds on rock, this thing nails AC/DC stuff pretty good as is I think.... After I get it back together I'll try to clean up my playing and post something somewhat worthy of it lmao....
 Hard to focus on playing when you keep staring at the amp and wondering if it's gonna blow up, I did allot of work to it, and being somewhat of a newbie I can't help but worry lol... I just finished cleaning the cab up and gluing down/repairing the tolex, came out nice! soon as my resistors get here I'll put it all back together... I LOVE the look of those older cabs compared to the new ones.... |
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02-12-2012, 07:47 PM
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#105 (permalink) | ||
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
Quote:
You have a pic of the finished cab? Man all that matters is you're happy with the tone. No need to chase shit if you are there. You can always mess with it down the road. Congrats on all your work! Keep post'n clips. Love these amps and always happy to hear them in action. 
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-12-2012, 08:38 PM
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#107 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
That's pornorific! Nice job! You're quite the handy man doing your headshell and amp. Saves some coin and it looks like you know to keep safe. Can't beat that.
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78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
Last edited by solarburnDSL50; 02-12-2012 at 09:29 PM. |
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02-12-2012, 09:05 PM
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#108 (permalink) |
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Senior Member
Join Date: May 2010
Location: Warrington, Pa.
Posts: 370
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Re: my '79 JMP 2203 project
Sounds better.... glad you got it sorted out
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10 Mesa Lonestar Classic 2x12 79 JMP MK2 100 watt Master Lead 10 Vox AC15HW1 11 American Deluxe Strat 08 American Standard Tele 05 SG Standard 72 Les Paul Deluxe 93 Les Paul Studio 01 Firebird V |
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02-13-2012, 10:06 PM
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#111 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
Way to go! Enjoy the shit out of that amp!
__________________
78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-15-2012, 03:29 PM
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#112 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
I see that "real" tube screamers cost a fortune... so i went this route...
Tube Screamer TS-808 Handwired Clone | eBay This is a handwired clone of the TS-808 Tube Screamer. Its a great sounding vintage, warm, analog overdrive. The chip is the original JRC4558D. The pedal is wired true bypass. This circuit is the same as the original 808 circuit with one exception - its very slightly tweaked to allow more bass to come through. It can be powered by either a battery or a standard Boss style 9VDC power supply. I use quality parts, and my wiring is neat, please feel free to check my feedback. I will let you know how it sounds... |
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02-15-2012, 04:56 PM
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#114 (permalink) | |
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Senior Member
Join Date: Aug 2008
Location: Wetville
Posts: 8,236
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Re: my '79 JMP 2203 project
__________________
78' 2203 JMP/OR15/GR TMB on a full stack of GB's=Rock Nirvanah Martimus Maximus Tonepacks in my amps. TOOBS! GR amplifiers. I've been thumped! Joey's bring'n sexy back! Quote:
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02-21-2012, 07:37 PM
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#118 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
It rocks, not sure the handheld recorder is doing it justice...
marshall jmp 2203 with tube screamer - YouTube toggling back and forth between tube screamer, then all tube screamer at the end. It's like adding a "red" channel... MXR was never used, it's just in the pic... |
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02-21-2012, 08:49 PM
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#119 (permalink) |
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Member
Join Date: Apr 2011
Location: West Michigan
Posts: 40
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Re: my '79 JMP 2203 project
Sounds much better then when you started, but there is still a bit of a "quack" sound for lack of a better term that I still hear from the very first vid you posted. Is it the camera maybe that is making that? You hear it in the beginning of your vids but it gets better as you play along and a bit of a feedback "horn" sound that sounds odd still.
That is why I posted the other JCM2203 vids cause I don't hear it in any of there vids. |
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02-21-2012, 08:52 PM
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#120 (permalink) |
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Senior Member
Join Date: Jul 2011
Location: San Antonio, TX
Posts: 193
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Re: my '79 JMP 2203 project
I played with it some more and using it with my attenuator I can get some really nice sounding distortion at a much lower volume. should be great for practice. if you crank the amp up with this thing 3/4 or so you get nice metal tones! I'm a newbie, but very happy with it! I mixed it some with the mxr, but its a little much... the mxr is seriously weak compared to the tube screamer....
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