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Old 1st July 2008, 06:01 PM   #101
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No problem for B1 to drive the F5 .I mean after a standard cd player there is no need to more voltage gain . Unless the tracks are recorded at very low levels , and your speakers are under 90 db of sensitivity .

With the F3 very good . I tryed for a long time the buffer ( for blues ) inside the feedback loop , but B1 is much better , leaving the F3 as it is. .
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Old 1st July 2008, 07:47 PM   #102
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No doubt there will be instances of "not enough gain" out there,
but I have not had issues yet.
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Old 1st July 2008, 08:04 PM   #103
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Is it better to sink a little the LSK389 since they tend to be rather hot ?
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Old 1st July 2008, 10:05 PM   #104
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I just wanted to post this link...

http://www.stereophile.com/amplifica.../54/index.html

the B1 is in good company of another DIY classic..

Since I still have those BUF-03s lying around.. I am going make a both and compare..only trouble is to find some cheap enclosures and pots and sockets.. etc etc...
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Old 1st July 2008, 11:14 PM   #105
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Quote:
good company of another DIY classic..
That's one of my favorite all-time articles- Aunt Coery's buffered passive preamp! Every once in a while, I'll pull that article out and read it. Very entertaining!

BUF-03 ($14) were expensive back when I was in High School!

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Old 1st July 2008, 11:48 PM   #106
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Quote:
Originally posted by tschrama
I just wanted to post this link...

http://www.stereophile.com/amplifica.../54/index.html

the B1 is in good company of another DIY classic..
And not to blow my own horn too loudly, but Corey based his article on another "1," the AL-1, which dates back to 1988.

Click the image to open in full size.

Elvis
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Old 2nd July 2008, 12:02 AM   #107
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Why Mr Eddy Sir, no Transformer Volume Control ?
Blasphemy.
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Old 2nd July 2008, 12:05 AM   #108
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Quote:
Originally posted by jacco vermeulen
Why Mr Eddy Sir, no Transformer Volume Control ?
Blasphemy.
Hey, what can I say? I was young. I didn't know any better.

se
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Old 2nd July 2008, 12:14 AM   #109
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Quote:
Originally posted by tschrama
I just wanted to post this link...

http://www.stereophile.com/amplifica.../54/index.html

the B1 is in good company of another DIY classic..

Since I still have those BUF-03s lying around.. I am going make a both and compare..only trouble is to find some cheap enclosures and pots and sockets.. etc etc...
Don’t waste your time and Money with BUF, it’s a joke. Well, at least to the level we aim today.
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Old 2nd July 2008, 12:58 AM   #110
Derekva is offline Derekva  United States
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Default A odd, perhaps naive question...

I'm interested in building this particular preamp but I'm concerned about being able to drive it with my analog front-end gear and still have enough 'oomph' for my amp and speakers. For the record, I'm currently running the following:

Front-end (approximately 300mV output)
Denon DL103R --> Denon AU310 --> Gram Amp 2 SE

Amp + Speakers
Dynaco ST35 (modified) through Klipsch Heresy II (main)
Hsu Research STF2 (sub)

I'm not worried about my CD player or tuner as they appear to have enough output to spare, but I am concerned that the 300mV won't be sufficient - especially given Dick Olsher's comments in his review - to drive the load.

Any comments on whether or not this would be a good or poor match?

Thanks!

-Derek
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