I've got a 50 watt New Sensor OT for a Marshall JMP/JCM and no diagram for the secondaries. I think it is called the MOT-50 or something similar. Does anybody know where I can find this diagram, or of a website where these trannies are available? The 2ndaries are yellow, purple and orange.
Thanks much,
Dave
New Sensor OTs
Moderators: pompeiisneaks, Colossal
Re: New Sensor OTs
Are you sure that's an MOP-50 from New Sensor? The ones I have used had 4 wires out of the secondary for 4, 8, and 16 ohm plus common. attached is a gif file on the MOP-50
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Great things happen in a vacuum
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titanicslim
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Re: New Sensor OTs
Yes, yellow, purple, orange and black, but I thought it was called an MOT 50.bnwitt wrote:Are you sure that's an MOP-50 from New Sensor? The ones I have used had 4 wires out of the secondary for 4, 8, and 16 ohm plus common. attached is a gif file on the MOP-50
Have you got the url for the site where you got that gif?
Dave
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Funkalicousgroove
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Re: New Sensor OTs
Put the leads on your DMM, the one that measures the most resistance to the common is the larger output.
Owner/Solder Jockey Bludotone Amp Works
Re: New Sensor OTs
Nope,
I think my sales contact at New Sensor sent me those years ago.
Here is their listing for Marshall replacement trannies:
Replacement Transformers for Marshall®/Vox
Replacement power and output transformers built to vintage specs with correct interleave ratios and lots of iron. Perfect upgrade for later and re-issue Marshalls®. Great replacements for many other vintage British amps. High quality - Classic sound.
Output Transformers for Marshall®
MOP-50
(Code# 17D010) 50 Watt
MOP-100
(Code# 17D020) 100 Watt
MOP50-T
(Code# 17E050) MOP 50 WATT TRANSFORMER (Made in Taiwan)
Power Transformers for Marshall® 1 6 buy it
MPT-50
(Code# 17D030) 50 Watt
MPT-100
(Code# 17D040) 100 Watt
I think my sales contact at New Sensor sent me those years ago.
Here is their listing for Marshall replacement trannies:
Replacement Transformers for Marshall®/Vox
Replacement power and output transformers built to vintage specs with correct interleave ratios and lots of iron. Perfect upgrade for later and re-issue Marshalls®. Great replacements for many other vintage British amps. High quality - Classic sound.
Output Transformers for Marshall®
MOP-50
(Code# 17D010) 50 Watt
MOP-100
(Code# 17D020) 100 Watt
MOP50-T
(Code# 17E050) MOP 50 WATT TRANSFORMER (Made in Taiwan)
Power Transformers for Marshall® 1 6 buy it
MPT-50
(Code# 17D030) 50 Watt
MPT-100
(Code# 17D040) 100 Watt
Great things happen in a vacuum
-
titanicslim
- Posts: 131
- Joined: Sat Mar 11, 2006 7:52 pm
- Location: Joplin, MO
Re: New Sensor OTs
Thanks, Funk! That's it. I had measured before and got erratic, unrepeatable readings on all three. Then I noticed the "low battery" symbolFunkalicousgroove wrote:Put the leads on your DMM, the one that measures the most resistance to the common is the larger output.
in the DMM's display. They now measure 1.0 ohm, 0.8 and 0.6 consistently. Much appreciate the help, gang. Now I can get on with birthin' this baby 
The denunciation of the young is a necessary part of the hygiene of older people, and greatly assists in the circulation of the blood. - Logan Pearsall Smith (1865 - 1946)