JTM45/100 Dual OT schematic

Get support and show off your MetroAmp JTM 45 kit builds.

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neikeel
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Re: JTM45/100 Dual OT schematic

Post by neikeel » Sun Mar 05, 2017 11:37 am

I have some somewhere (cannot vouch for correct schems as I have not sat down and wired the amp up yet) I need to scan and post them here somehow.
Neil

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Re: JTM45/100 Dual OT schematic

Post by Roe » Mon Mar 06, 2017 4:25 am

maxbauer wrote:
Roe wrote:Tommy wrote this on PP:

To explain the above in simple terms, the OT's are simply connected in the usual way but completely in parallel to one another, and the impedances halfed!

."

Hi guys, im new here!
I had to dig up this old thread, there is so little information on the Dual OT amps.

From what i understandt about transformers is, if you wire them parallel in primaries, and secondaries,
the impedances stay the exact same. because the transfer ratio stays the same, only the power
is divided on two irons causing less heat on either. The tubes are seeing the same impedance
as they do with one trasnformer. - given that they are the same irons.

Anybode want to chime in again on this subject?
I could not get any schematics of the old 45/100s, they are not available anymore :(
if someone could repost them that would be great.

max
:rocker:
haha, so the alleged 100w amps ran a 8k primary. ouch
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Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39

maxbauer
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Re: JTM45/100 Dual OT schematic

Post by maxbauer » Tue Mar 07, 2017 10:14 am

hi Neill, that would be great if you could post a schematic, i cant find it online anymore.
cheers

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Re: JTM45/100 Dual OT schematic

Post by maxbauer » Tue Mar 07, 2017 10:20 am

"[/quote] haha, so the alleged 100w amps ran a 8k primary. ouch[/quote]

it would make more sense to wire the secondaries only in parallel in this case, i am not
sure anymore to be honest haha.

looking forward to see an original plan :lol:

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