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Old 28th January 2007, 07:25 PM   #1201
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That sounds interesting!
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Old 28th January 2007, 07:38 PM   #1202
flg is offline flg  United States
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Great,
I like my version of the BZLS/Aleph 1.7, but I'm certainly open to a new and improved N.P. design.

I needed somthing to drive my Circlotron...

"DIY Progress is a very broad subject. "
Thanks...
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Old 28th January 2007, 07:44 PM   #1203
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by Nelson Pass
Anyway, I have decided that I need a more robust line level
stage to drive my F4 followers, so I might as well kill two birds
with one stone.


hehe
time for toobz.............talkin' about serious preamp
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Old 28th January 2007, 07:45 PM   #1204
cviller is offline cviller  Canada
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Would it be possible to make a tristate buffer as input in a preamp so you could avoid source selection relays?
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Old 28th January 2007, 07:58 PM   #1205
flg is offline flg  United States
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Chances are Nelson, That you've been finalizing the design recently??? May I suggest a "Light Speed" type Volume control of sorts???
Please,
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Old 28th January 2007, 08:02 PM   #1206
Blues is offline Blues  United States
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Quote:
Originally posted by Nelson Pass
Anyway, I have decided that I need a more robust line level
stage to drive my F4 followers, so I might as well kill two birds
with one stone.

Mr. Pass, I would like to wish for a JFET preamp that can handle balanced and unbalanced inputs/output but doesn't suffer in gain (ROBUST) when you switch to unbalanced. And make it output bal/unbal signals at the same time without losing gain on either one. And make that a balanced single-ended design like the BOSOZ. And make that... please!
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Old 29th January 2007, 05:43 AM   #1207
steenoe is offline steenoe  Denmark
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I am with Blues, all the way
Quote:
my F4 followers
Mr. Pass, any chance that the F4 is a higher powered Lovoltech thing?

Steen
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Old 29th January 2007, 07:10 AM   #1208
AR2 is offline AR2  United States
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How about DA converter with really nice output stage? That would be something different.
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Old 29th January 2007, 04:26 PM   #1209
moe29 is offline moe29  United States
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I would be interested to see what type of headphone amp Mr. Pass
would come up with. Doesn't have to be a full blown write up,
maybe just a schematic, like he did with the Chip Amps.
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Old 29th January 2007, 06:01 PM   #1210
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Quote:
Originally posted by cviller
Would it be possible to make a tristate buffer as input in a preamp so you could avoid source selection relays?
Possible, but likely to color the sound more than relays.


Quote:
Originally posted by flg May I suggest a "Light Speed" type Volume control of sorts?
You can use any kind of volume control you like as long as it's at
the input or output and not in the loop.


Quote:
Originally posted by Blues Mr. Pass, I would like to wish for a JFET preamp that can handle balanced and unbalanced inputs/output but doesn't suffer in gain (ROBUST) when you switch to unbalanced. And make it output bal/unbal signals at the same time without losing gain on either one. And make that a balanced single-ended design like the BOSOZ
Already done, since it meets my needs as well.


Quote:
Originally posted by steenoe
any chance that the F4 is a higher powered Lovoltech thing?
It's not, but it does use JFETs on the input.


Quote:
Originally posted by moe29
I would be interested to see what type of headphone amp Mr. Pass would come up with. Doesn't have to be a full blown write up, maybe just a schematic, like he did with the Chip Amps.
It's my observation that headphones don't usually need voltage
gain, and in those cases a simple single-ended buffer is probably
the best circuit. When I have time, I'll try to draw a quick
schematic.

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