Page 1 of 1
Parts for JTM 45/100
Posted: Sat Jul 02, 2011 4:24 pm
by ValveStorm
Been putting together a build checklist for JTM 45/100 parts:
http://www.valvestorm.com/JTM%2045/100%20Kit
Let me know if I missed anything!
Re: Parts for JTM 45/100
Posted: Sun Jul 03, 2011 10:57 am
by VintageCharlie
Looks good to me! What i noticed is that there are only 470r screen grid resistors on the list, while they usually should be 1k, if i'm not mistaken. Oh, and 1x internal fuse holder would be a good thing, as 45/100 usually have only one external fuse holder. Great that you will offer the castelco switches and rifas too! I'm going with rifas for my 45/100, as i've heard from several experienced guys, including M e r r e n and Wallace, that these are as close to the original RS caps as it goes from the current production.
Re: Parts for JTM 45/100
Posted: Sun Jul 03, 2011 11:40 am
by ValveStorm
Good catch! The screen resistor have been changed to 1K.
The internal fuse holder is listed as a prerequisite. I figured most folks would be going with Brian H's boards, and get a matching fuseholder from him...
Re: Parts for JTM 45/100
Posted: Mon Jul 04, 2011 9:49 am
by neikeel
Nice to see the Castleco switches, you can do them cheaper than I can, even with shipping!
Re: Parts for JTM 45/100
Posted: Mon Jul 04, 2011 9:55 am
by shakti
on the Castelco switches and RIFA electrolytics. Just one question though: why not 15uF for the preamp cap, rather than 22uF?
Re: Parts for JTM 45/100
Posted: Mon Jul 04, 2011 12:07 pm
by Ydna
Is there any chance that valvestorm could become a one stop shop, like the metro store was at one time?
Re: Parts for JTM 45/100
Posted: Sat Jul 09, 2011 5:03 pm
by ValveStorm
ValveStorm will never be MetroAmp! I started all this to help friends out that were trying to find parts for their 12 series chassis. I aim to complement Marstran trannies, Brian H's turret boards, and Sparky's Panels. Keep checking out the site! New added stuff all the time... including caps and other stuff from some of these fine folks!
Re: Parts for JTM 45/100
Posted: Wed Jul 13, 2011 2:51 pm
by ScienceFriction
What you are doing is awesome Valvestorm, and one of the main reasons I decided to finally build a Marshall clone. I just wanted to ask you a couple of things. Will you be getting the .5 amp AGC - Slo Blo .25" x 1.25" fuses back in stock soon? Also, I want to use the Castelco switches for my JMP50, but to be vintage correct I'd need to use two, will they both fit? Thanks, sorry if this isn't a good place to ask this.
Re: Parts for JTM 45/100
Posted: Wed Jul 13, 2011 4:01 pm
by shakti
Good question on the Castelcos...typically the old amps would use one DPST and one SPST switch. Castelco makes a SPST as well.
Re: Parts for JTM 45/100
Posted: Wed Jul 13, 2011 7:41 pm
by ValveStorm
The DPST Castelco's will sit side by side comfortable in a 1.1" hole spacing.
Neikeel may be able to help with the SPST Castelco's. If anyone in Britain wants to send some of these stateside, I would be happy to carry them.
While not period correct, you can also use the Carling type switches in the JTM 45/100:
A lot of folks use two of these SPST:
If you want to use DPST for the standby switch, I can also get these:
Re: Parts for JTM 45/100
Posted: Wed Jul 13, 2011 9:10 pm
by ScienceFriction
Thanks Valvestorm, when I go to order the parts for my 50W build I'll just get the Castleco DPST switch and source the other SPST switch from someone in Britain.
Re: Parts for JTM 45/100
Posted: Fri Jul 15, 2011 10:48 am
by Big Mike
Good stuff!
Just made my 1st valve storm order last night. Sorry most of it's for a 5E3 build. LOL!!!!
Think that castelco SPDT would be a decent mover? I have a friend in the electronics business that imports from Britian, may be able to help you out. I can find out if you'd like.
Mike
