JTM45/100 complete !! Pics.

Detailed assembly steps separated into threads.

Moderator: VelvetGeorge

Wayne
Senior Member
Posts: 233
Joined: Tue Sep 09, 2008 10:48 pm

JTM45/100 complete !! Pics.

Post by Wayne » Sun Jul 19, 2009 11:10 pm

JTM45/100 complete !!

Wayne

:D
Attachments
Picture 010.jpg
Picture 010.jpg (111.73 KiB) Viewed 5914 times
Picture 009.jpg
Picture 009.jpg (133.8 KiB) Viewed 5914 times
Picture 008.jpg
Picture 008.jpg (121.57 KiB) Viewed 5913 times
Picture 007.jpg
Picture 007.jpg (121.01 KiB) Viewed 5912 times
Picture 006.jpg
Picture 006.jpg (121.98 KiB) Viewed 5908 times
Picture 005.jpg
Picture 005.jpg (141.42 KiB) Viewed 5904 times

Roe
Senior Member
Posts: 5056
Joined: Thu Apr 13, 2006 1:36 pm
Just the numbers in order: 7
Location: Drontheim. Norwegen
Contact:

Re: JTM45/100 complete !! Pics.

Post by Roe » Sun Jul 19, 2009 11:19 pm

looks good! really good! where did you find the indicator light? what's the specs and parts?
http://www.myspace.com/20bonesband" onclick="window.open(this.href);return false;
http://www.myspace.com/prostitutes" onclick="window.open(this.href);return false;
Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39

User avatar
Flames1950
Senior Member
Posts: 9294
Joined: Sun Feb 08, 2004 1:04 am
Location: Waukee, Iowa

Re: JTM45/100 complete !! Pics.

Post by Flames1950 » Sun Jul 19, 2009 11:21 pm

That turned out awesome dude. Congrats!! :D
Image

Wayne
Senior Member
Posts: 233
Joined: Tue Sep 09, 2008 10:48 pm

Re: JTM45/100 complete !! Pics.

Post by Wayne » Mon Jul 20, 2009 12:09 am

Hi - thanks - it turned out great. Globe is same as georges amber lamp - but red. Found it on ebay. Layout is as per the Hendrix Dickinson amp. B Batz has a GREAT layout here.

http://homepage.mac.com/WebObjects/File ... US&lang=en" onclick="window.open(this.href);return false;

Still kept the original 56k slope. Used .018 instead of .022 mustards. Used 560 & 300 lemco's.

JJ KT66's & pre's.
Marstran PT, OT & 20h choke.

I scaled the cab from Georges pictures on his Plexireplica site. Didn't have drawings. Only had external dimensions. It was a bit difficult trying to measure the piping slots, vent locations, back panel openings etc etc from the photo's but when you locate the chassis in the blank cab you get a fair idea. It's probably not EXACT but it's pretty close & it only cost me around $100AU all up. It's finger jointed construction, B grade ply. 5/8" case & 1/2" front & rear.
Was a lot of fun building it.

Sounds great.

Wayne
:D

Vegard
Senior Member
Posts: 250
Joined: Wed Oct 08, 2008 11:01 am
Just the numbers in order: 7
Location: Brumunddal, Norway

Re: JTM45/100 complete !! Pics.

Post by Vegard » Mon Jul 20, 2009 8:38 am

How is that amp sounding? Clips! :)
Ive also got some .018 instead of .022 for it.
Metroamp builds : 68` 50w (x2), 69` 100w, 68` 100w 12xxx (x3), JTM45/100, JTM50(x2), 2203

Roe
Senior Member
Posts: 5056
Joined: Thu Apr 13, 2006 1:36 pm
Just the numbers in order: 7
Location: Drontheim. Norwegen
Contact:

Re: JTM45/100 complete !! Pics.

Post by Roe » Mon Jul 20, 2009 9:12 am

how does the jj kt66s sound?
http://www.myspace.com/20bonesband" onclick="window.open(this.href);return false;
http://www.myspace.com/prostitutes" onclick="window.open(this.href);return false;
Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39

User avatar
Big Mike
Senior Member
Posts: 796
Joined: Tue Oct 31, 2006 12:42 am
Just the numbers in order: 7
Location: East Bay California - Raider Nation

Re: JTM45/100 complete !! Pics.

Post by Big Mike » Mon Jul 20, 2009 11:29 am

Fantastic Wayne!

Great job!!!!!

Love to hear it if you can do clips.
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers

Roe
Senior Member
Posts: 5056
Joined: Thu Apr 13, 2006 1:36 pm
Just the numbers in order: 7
Location: Drontheim. Norwegen
Contact:

Re: JTM45/100 complete !! Pics.

Post by Roe » Mon Jul 20, 2009 3:26 pm

I guess its hard to find decent new preamp tubes that can stand the HIGH preamp voltages in this amp. for instance, v2 in mine has a voltage of 360v - something which will easily kill the tung sol and many sovteks. Also, I must admit that I cannot stand the jj 83s
http://www.myspace.com/20bonesband" onclick="window.open(this.href);return false;
http://www.myspace.com/prostitutes" onclick="window.open(this.href);return false;
Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39

User avatar
Big Mike
Senior Member
Posts: 796
Joined: Tue Oct 31, 2006 12:42 am
Just the numbers in order: 7
Location: East Bay California - Raider Nation

Re: JTM45/100 complete !! Pics.

Post by Big Mike » Mon Jul 20, 2009 3:50 pm

I'm not a big JJ Preamp tube fan either.
There's still some good NOS deals out there though, considering.
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers

Roe
Senior Member
Posts: 5056
Joined: Thu Apr 13, 2006 1:36 pm
Just the numbers in order: 7
Location: Drontheim. Norwegen
Contact:

Re: JTM45/100 complete !! Pics.

Post by Roe » Mon Jul 20, 2009 5:17 pm

I think the prices for NOS 12ax7s are just insane, esp. in the US. I've never paid more than 15usd for a 12ax7. Its all about finding the right tubes for each individual amp since tubes and amps vary quite a bit.
http://www.myspace.com/20bonesband" onclick="window.open(this.href);return false;
http://www.myspace.com/prostitutes" onclick="window.open(this.href);return false;
Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39

User avatar
Big Mike
Senior Member
Posts: 796
Joined: Tue Oct 31, 2006 12:42 am
Just the numbers in order: 7
Location: East Bay California - Raider Nation

Re: JTM45/100 complete !! Pics.

Post by Big Mike » Mon Jul 20, 2009 6:10 pm

Well I've paid more than that. LOL
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers

User avatar
Flames1950
Senior Member
Posts: 9294
Joined: Sun Feb 08, 2004 1:04 am
Location: Waukee, Iowa

Re: JTM45/100 complete !! Pics.

Post by Flames1950 » Mon Jul 20, 2009 6:18 pm

Big Mike wrote:Well I've paid more than that. LOL
No doubt, and it was still worth it considering how new preamp tubes typically sound.
Image

User avatar
Big Mike
Senior Member
Posts: 796
Joined: Tue Oct 31, 2006 12:42 am
Just the numbers in order: 7
Location: East Bay California - Raider Nation

Re: JTM45/100 complete !! Pics.

Post by Big Mike » Mon Jul 20, 2009 8:48 pm

Flames1950 wrote:
Big Mike wrote:Well I've paid more than that. LOL
No doubt, and it was still worth it considering how new preamp tubes typically sound.
There's some good ones around for V1 and the PI.
the Tung Sol RI's sound good to me, as do most of the mullard RI.
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers

Roe
Senior Member
Posts: 5056
Joined: Thu Apr 13, 2006 1:36 pm
Just the numbers in order: 7
Location: Drontheim. Norwegen
Contact:

Re: JTM45/100 complete !! Pics.

Post by Roe » Mon Jul 20, 2009 11:48 pm

Big Mike wrote:
Flames1950 wrote:
Big Mike wrote:Well I've paid more than that. LOL
No doubt, and it was still worth it considering how new preamp tubes typically sound.
There's some good ones around for V1 and the PI.
the Tung Sol RI's sound good to me, as do most of the mullard RI.
yes, those are fairly good. but the high voltages in the cathode follower of these amps can kill those tubes in a few days
http://www.myspace.com/20bonesband" onclick="window.open(this.href);return false;
http://www.myspace.com/prostitutes" onclick="window.open(this.href);return false;
Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39

User avatar
Big Mike
Senior Member
Posts: 796
Joined: Tue Oct 31, 2006 12:42 am
Just the numbers in order: 7
Location: East Bay California - Raider Nation

Re: JTM45/100 complete !! Pics.

Post by Big Mike » Tue Jul 21, 2009 1:15 am

Yeah I use the GE Nos for the CF stages.
Metroamp kit JMP50 - CM OT
Metroamp JTM45 turned JMP50 w/Classictone OT
Marshall 2550 Jubilee
Powered by Thorn and Kauer guitars
Scumback Speakers

Post Reply