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Old 20th June 2004, 12:07 AM   #1
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Default does anybody know this transfo?

hello guys,

the first picture is the amplifier. And the next are the transfo, power and output transfo, can anybody tell me what brand they are, there is nothing on it. i have even completely open one up, and nothing was there. does anyone has a scheme of this ?

thanx a lot
(oh yeah, it are big photo's)
thanx already

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Old 20th June 2004, 01:07 AM   #2
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Unsure but it looks like a mid-late 1960's british EL84 SE amp I see in magazines every now and again...

The trafos are probably of the same brand as written upon the front and that left-hand side white tube needs replacing among a hell of a lot more other components.

Personally I found the soldering skills of the person whom placed that black-tube probably heatshrink in to be lacking, you shouldn't melt film caps :\
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Old 20th June 2004, 01:11 AM   #3
G is offline G  United States
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I can tell you that Trio was the predecessor of Kenwood. Who knows who they outsourced their transformers from. They look similar the the HK transformers of the late 60s or early 70s.
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Old 20th June 2004, 01:20 AM   #4
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Hi,

The powercord even has the standard US plug on it.
Indeed TRIO, like Marantz and maybe some other manufacturers, were sold to Japanese corporations in the Seventies (?).

Upon which TRIO, as a brandname, was slowly replaced with the name Kenwood at least that's how it was for the exported products.

As for the OPTs and other iron...well, I think you can play "whodunnit" on that one for a very long time and probably never find the answer.

Cheers,
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Old 20th June 2004, 01:24 AM   #5
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Heh you learn something new every minute...
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Old 20th June 2004, 02:23 AM   #6
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It has Japanese resistors in it... ( MATSUSHITA, the red ones...)
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Old 20th June 2004, 06:27 AM   #7
jueic is offline jueic  Taiwan
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Two things I found,

1. Power filter -- No choke. RC only. Capacitor is a back-to back type.

2. it got speakers on-off switch. Could this be japanese way Of "MUTE".


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Old 20th June 2004, 08:15 AM   #8
dhaen is offline dhaen  Europe
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Definitely Japanese production.
Speaker on-off may be instead of automatic headphone muting.
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Old 20th June 2004, 04:51 PM   #9
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hahaaha, incredible how much you guys can see things,
looking at the resistors, hahaha, great.

there is an el84 tube missing. from what i can see, it's a push pull, el84 with 12ax7 in front.

i'm gonna build the same again : the el84 as push pull as power and an el84 as pramp. So i'm gonna buy 6 el84 and all the rest out of it. There are a lot of knobs in it which i don't use and make the signal worse.

I have found a circuit on www.diyparadise.com, the guy (a great generous guy) has build it, he says it sound very good.

but if anybody has an even better circuit let it come down on me.

thanx already a lot.

ps:something completely different,: does the 1626 really sounds that good, i mean better then a 45-2a3-300b (from sovtek let us say, because a 1626 and an WE300 is ti big price difference, i can buy 2a3 sovtek but not an WE300.
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Old 20th June 2004, 04:53 PM   #10
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ohh an se amp, i thought is an push pull, i'm gonna check again, tomorrow, i'm to busy right now

i should read better the replies
sorry
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