JTM 45/100 Replica

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bill bokey
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JTM 45/100 Replica

Post by bill bokey » Sun Feb 07, 2016 3:05 pm

A few pics of a JTM 45/100 Replica I just built with Marstran PT, OT and choke, SoZo NexGen and Rifa capacitors :

Image

Image

Image

Image

Image

Image

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And here are three clips with the following settings :

Volume 8
Bass 0
Mid 10
Treble 5
Presence 5

All are the same riff reamped through three different cabs, a '69 1982B loaded with T1281 G12H w/Pulsonic 102 014 cones :
https://soundcloud.com/castle-made-of-s ... onic-t1281

Then a Mojotone 4x12 loaded with a pair of Scumback H75-LDC and a pair of V30 :
https://soundcloud.com/castle-made-of-s ... umback-v30

Finally a '71 1960B (checkerboard) loaded with T1221 G12M w/ Pulsonic 102 003 cones :
https://soundcloud.com/castle-made-of-s ... onic-t1221

Recorded with a condenser mic facing the logo, about 50cm in front of the cabs

Image
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danman
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Re: JTM 45/100 Replica

Post by danman » Sun Feb 07, 2016 3:19 pm

Beautiful work! Sounds just as nice as it looks!
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Re: JTM 45/100 Replica

Post by neikeel » Sun Feb 07, 2016 3:23 pm

Excellent, really clean and tidy, has a European look about it!
Neil
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bill bokey
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Re: JTM 45/100 Replica

Post by bill bokey » Sun Feb 07, 2016 4:33 pm

Thank you guys ! :)

Here's another clip which is only a mix of two previous clips, with G12M and G12H :

https://soundcloud.com/castle-made-of-s ... full-stack


By the way I removed the PPIMV before the recording of these clips, the amp is not loud enough, it definitely needs no PPIMV or attenuator.

I'll post more clips tomrrow, with GEC KT66s and Mullard preamp tubes. Should sound pretty good ! :rock:
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Re: JTM 45/100 Replica

Post by Roe » Mon Feb 08, 2016 5:26 am

sounds good but perhaps biased a little hot?
http://www.myspace.com/20bonesband" onclick="window.open(this.href);return false;
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Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39
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Re: JTM 45/100 Replica

Post by bill bokey » Mon Feb 08, 2016 5:36 am

Maybe, I'll have to check. I think it was around 70-75% but the quad is quite unbalanced. I've just ordered a new set of KT66s ;)
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Re: JTM 45/100 Replica

Post by Roe » Mon Feb 08, 2016 6:56 am

It looks great and sounds good (I bias the gold lion at 60% myself)
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
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DG45
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Re: JTM 45/100 Replica

Post by DG45 » Mon Feb 08, 2016 7:26 am

Nice. Very nice.

Dumb question. I noticed the Alpha pots except for the 1 meg PEC pot for bass. Any reason why you used a PEC pot for the bass control?
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Re: JTM 45/100 Replica

Post by axeman » Mon Feb 08, 2016 7:28 am

Wow, a work of art. JIm would have been proud of you. What dimension is the power board ? I need to make one.
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Re: JTM 45/100 Replica

Post by bill bokey » Mon Feb 08, 2016 7:47 am

DG45 wrote:Nice. Very nice.
axeman wrote:Wow, a work of art. JIm would have been proud of you.
Thak you guys ! :)
DG45 wrote: Dumb question. I noticed the Alpha pots except for the 1 meg PEC pot for bass. Any reason why you used a PEC pot for the bass control?
I find the PEC pots sound cleaner and I tend to use them for bass.
axeman wrote:What dimension is the power board ? I need to make one.
http://forum.metroamp.com/viewtopic.php?f=15&t=19748 :thumbsup:

Here is a drilling template I made, hope it helps.

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Re: JTM 45/100 Replica

Post by coldengray » Mon Feb 08, 2016 10:39 am

Bill - brilliant build!! What chassis and faceplates did you use?
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bill bokey
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Re: JTM 45/100 Replica

Post by bill bokey » Mon Feb 08, 2016 2:34 pm

Thanks ! :)

Chassis is a Metroamp, from Valvestrom. Back panel I drew on Photoshop from original photos and had made by Modulus Amplification.
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Re: JTM 45/100 Replica

Post by coldengray » Mon Feb 08, 2016 3:42 pm

The whole thing looks awesome, really great job. It has inspired me to build one for myself!
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Re: JTM 45/100 Replica

Post by bill bokey » Tue Feb 09, 2016 1:05 am

:thumbsup:
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Re: JTM 45/100 Replica

Post by axeman » Tue Feb 16, 2016 10:26 pm

Did you build the head cab as well ?
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