A 70's ODS

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talbany
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Re: A 70's ODS

Post by talbany »

martin manning wrote:
talbany wrote:Anyone know the original FET transistor he used?
2N4416? Someone here must know what HAD was using. All I know is in the #124 pictures the FET looks to be a 2N-something. Vishay/Siliconix have current production 2N4416A in TO72 at about $2.50 ea.

MPM
Gracias!!

T
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martin manning
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Re: A 70's ODS

Post by martin manning »

Correction... Central Semi's 2N4416A's are $2.24 at Mouser; the Vishay Siliconix are $3.99... Still better than $10+ for the NTE.

MPM
ampdork
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Re: A 70's ODS

Post by ampdork »

NTE452


Forget where that came from but that is what I thought is was.

However I always thought of NTE as being a super expensive replacement parts company anyway. I would cross reference whatever the number is back to a "real" part and go from there unless you
feel the need to use exactly what he did. Too expensive, not as good as other device....skip nte....my opinion anyway.
"...& I'm all out of bubblegum"
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Structo
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Re: A 70's ODS

Post by Structo »

Yes, that is how I understand NTE.
They rebrand parts, more like a distributor of parts but generally high quality from what I've seen.
A local place carries a lot of NTE stuff, I didn't think most of it was very expensive, at least what I have purchased.
Tom

Don't let that smoke out!
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ChrisM
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Re: A 70's ODS

Post by ChrisM »

Maybe I'm missing something (I don't know much about the early ODS')
but where is the preamp input, I only see the output?
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Structo
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Re: A 70's ODS

Post by Structo »

That is all that one has. :wink:
Tom

Don't let that smoke out!
talbany
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Re: A 70's ODS

Post by talbany »

NTE452
Shad Have you used one yet..
ampdork
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Re: A 70's ODS

Post by ampdork »

Shad Have you used one yet..
No....too expensive for me to justify when I have 2n5486 on hand.
"...& I'm all out of bubblegum"
Max
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Re: A 70's ODS

Post by Max »

ChrisM wrote:Maybe I'm missing something (I don't know much about the early ODS')
but where is the preamp input, I only see the output?
Most of the originals did only have a pre-o u t.

Max
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ChrisM
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Re: A 70's ODS

Post by ChrisM »

Here is the schem for #40 in case anyone was wondering.
https://tubeamparchive.com/files/40_schematic_496.pdf

Great work.

O do you have a template for making the main eyelet board?
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martin manning
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Re: A 70's ODS

Post by martin manning »

By chance I landed on the pics of #040 on Rob Livesey's site today, and I see that the FET in that amp is a three pin device in a plastic or epoxy case (not too clear, but TO-92 I guess). That wouldn't be the NTE452 or 2N4416, as they are both four pin in metal TO-72, so maybe it is 2N5486?

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talbany
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Re: A 70's ODS

Post by talbany »

Templates
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selloutrr
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Re: A 70's ODS

Post by selloutrr »

great templates! thank you!

do they print to scale on 8.5 x 11 ?
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Max
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Re: A 70's ODS

Post by Max »

butwhatif wrote:sometimes it makes u wonder how these went on to inspire in their original state.
Do you remember the series numbers of the 70ies amps you've played and the personal experiences and impressions you post here are derived from?

Thanks in advance.

Max
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Funkalicousgroove
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Re: A 70's ODS

Post by Funkalicousgroove »

There isn 't a such thing as a 70's classic

A classic has .05 mid, 100K slope, 250/100/250, the 220K/100K trim OD entrance and standard overdrive.

70's amps are unique and mutually exclusive from classics. Let's not further the confusion.

Thanks
Owner/Solder Jockey Bludotone Amp Works
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