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analag

Hybrid As Always
« on: January 04, 2007, 11:47:14 PM »


For those who want to try something a little different from the run of the mill stuff.

The Gain control is 10K. The design is flexible enough for you to try different combination of tubes, even a nice 1:1 input transformer could be used in place of the input caps and if you use a 2:1 output transformer, you end up with a cap-less hybrid mic pre.

Plenty of gain and headroom.

 
analag
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Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

King_Cruiser

Hybrid As Always
« Reply #1 on: January 05, 2007, 02:47:11 AM »
Nice to see people thinking OTB.
Brimar made some nice 5965 specimens.
Extra noise from Si ma feed will get cancelled.
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analag

Hybrid As Always
« Reply #2 on: January 05, 2007, 03:14:11 AM »
Quote from: "King_Cruiser"
Nice to see people thinking OTB.


That's my MO.
I find the GE clear top 5965 and 6N1P to compliment the sound very well.
5965 are notorious for mismatched pairs in the bottle, so matching is critical if this tube is used.

analag
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Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

hejsan

Hybrid As Always
« Reply #3 on: January 05, 2007, 05:51:51 PM »
Wow, no caps.. But what is it?
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Just remember -- if the world didn't suck, we would all fall off.
Quote from: "Butterylicious"

Ptownkid

Hybrid As Always
« Reply #4 on: January 05, 2007, 05:53:15 PM »
there's a pair of 47u's
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mikka

Hybrid As Always
« Reply #5 on: January 06, 2007, 05:53:30 AM »
Generous of you to share that one.... thanks, I'm gonna study it and hopefully learn something.
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jensenmann

Hybrid As Always
« Reply #6 on: January 06, 2007, 07:48:43 AM »
Very interesting that´s really good brainfood.

Analag, you think different. This circuit gives me a lot to think about.
Thanks :thumb:
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Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

analag

Hybrid As Always
« Reply #7 on: January 06, 2007, 04:31:06 PM »
This circuit is designed for high gain, high headroom and transparency.
I do have a few more ideas, but this is a simple circuit and it should be kept simple.


analag
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Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

King_Cruiser

Hybrid As Always
« Reply #8 on: January 06, 2007, 05:25:02 PM »
Been Here?

Toshiba>2N>V1>V2
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Michael Krusch

Hybrid As Always
« Reply #9 on: January 07, 2007, 03:35:21 PM »
How does it sound?
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Hybrid As Always
« Reply #10 on: January 07, 2007, 04:43:40 PM »
Quote from: "Michael Krusch"
How does it sound?


Like a symmetrical amp. Push-pull sound guarranteed even with SE power amp.
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analag

Hybrid As Always
« Reply #11 on: January 07, 2007, 06:32:46 PM »
Quote from: "Wavebourn"
Quote from: "Michael Krusch"
How does it sound?


Like a symmetrical amp. Push-pull sound guarranteed even with SE power amp.


Ha ha ha ha....thats a better answer than I could come up with.
How does it sound....big and clear with lots of micro dynamics and a very black background. Very vivid 3 dimensionality. I could go on.

analag
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Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

Hybrid As Always
« Reply #12 on: January 07, 2007, 07:05:49 PM »
Quote from: "analag"
Quote from: "Wavebourn"
Quote from: "Michael Krusch"
How does it sound?


Like a symmetrical amp. Push-pull sound guarranteed even with SE power amp.


Ha ha ha ha....thats a better answer than I could come up with.
How does it sound....big and clear with lots of micro dynamics and a very black background. Very vivid 3 dimensionality. I could go on.

analag


Sorry, I forgot to add: very clean push-pull sound. ;)
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babyhead

Hybrid As Always
« Reply #13 on: January 07, 2007, 07:28:45 PM »
Do you have a picture of your build?

I like.
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analag

Hybrid As Always
« Reply #14 on: January 08, 2007, 02:51:16 AM »
Quote from: "babyhead"
Do you have a picture of your build?

I like.


Yes I do, in fact it's such a great sounding pre, I made a few....so which one.

analag
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Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

babyhead

Hybrid As Always
« Reply #15 on: January 08, 2007, 04:36:48 AM »
Your design ethic is so very interesting and clean, it made me curious as to your construction techniques and parts selection.

...so whatever you've got.

This looks like something to build after I get a few more scratch builds under my belt.

 :guinness:
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lernith

Hybrid As Always
« Reply #16 on: May 22, 2008, 07:26:44 PM »
analag-- you said 5965s are notoriusly mismatched, are there good substitutes that tend to be better matched?  I've heard due to the way tubes are made it is impossible to manufacture matching tubes, does that sentament apply to twin-triode tubes?
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analag

Hybrid As Always
« Reply #17 on: May 26, 2008, 08:00:48 PM »
The 5965 is a twin triode. It is said the 12AT7 is a substitue, but I think a 6N1P is closer. Anyway with it's notoriety for having mismatched twins in the glass, I would buy more than I needed and select the closest ones.

analag
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Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

lernith

Hybrid As Always
« Reply #18 on: May 31, 2008, 08:21:09 PM »
I don't think I have the vernacular down, sorry. :wink:  So are there any twin-triodes that are matched in glass?  Or is it really not that much of a bother to find a close enough pair?
I'm guessing that tube manufacturers wern't worried about matched triodes as most designers kept to single-ended exept for the poweramps?
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skipwave

Hybrid As Always
« Reply #19 on: June 01, 2008, 10:46:16 PM »
12AV7

Here's an interesting anecdote: http://www.vacuumtubesinc.com/hos12at71.html
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Quote from: PRR
Now, maybe you don't, or shouldn't, grab the ribbon for far-harpsichord, nor the hot condenser for snare-kissing... yet often we do.
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