Dynaco PAS 3 Pre Amp
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Dynaco PAS 3 Pre Amp
 
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alison
Guest
Posted: Thu Jun 16, 2005 8:00 pm    Post subject: Dynaco PAS 3 Pre Amp Reply with quote
I am considering purchasing a dynaco PAS 3 pre amp. Does any one have any
experience/opinions regarding these pre amps?

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Michael Squires
Guest
Posted: Thu Jun 16, 2005 8:00 pm    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
In article <BED724D4.29EF3%jono_1@bellsouth.net>,
Jon Yaeger <jono_1@bellsouth.net> wrote:
Quote:
in article newscache$30n6ii$mc4$1@tomato.pcug.org.au, alison at
pjames@pcug.org.au wrote on 6/16/05 11:00 AM:

I am considering purchasing a dynaco PAS 3 pre amp. Does any one have any
experience/opinions regarding these pre amps?


I think they sound terrible unmodified. Just my opinion.

Jon

I agree; I owned one ca 1963 made from a kit. One trick I found was that the
tone controls were not actually set for flat when centered, and I spent some
time finding out what was flat, and marked the positions.

I also had an Eico ST-70, which wasn't any better in terms of tone control
accuracy.

My favorite preamp at that time was the Marantz 7; the Citation I was too
noisy, in my opinion.

Mike Squires
--

Mike Squires (mikes at cs.indiana.edu) 317 233 9456 (w) 812 333 6564 (h)
mikes at siralan.org 546 N Park Ridge Rd., Bloomington, IN 47408
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Jon Yaeger
Guest
Posted: Thu Jun 16, 2005 9:45 pm    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
in article newscache$30n6ii$mc4$1@tomato.pcug.org.au, alison at
pjames@pcug.org.au wrote on 6/16/05 11:00 AM:

Quote:
I am considering purchasing a dynaco PAS 3 pre amp. Does any one have any
experience/opinions regarding these pre amps?


I think they sound terrible unmodified. Just my opinion.

Jon
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Jon Yaeger
Guest
Posted: Fri Jun 17, 2005 2:04 am    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
in article d8scsu$ifm$1@rainier.uits.indiana.edu, Michael Squires at
mikes@cs.indiana.edu wrote on 6/16/05 1:29 PM:

Quote:
In article <BED724D4.29EF3%jono_1@bellsouth.net>,
Jon Yaeger <jono_1@bellsouth.net> wrote:
in article newscache$30n6ii$mc4$1@tomato.pcug.org.au, alison at
pjames@pcug.org.au wrote on 6/16/05 11:00 AM:

I am considering purchasing a dynaco PAS 3 pre amp. Does any one have any
experience/opinions regarding these pre amps?


I think they sound terrible unmodified. Just my opinion.

Jon

I agree; I owned one ca 1963 made from a kit. One trick I found was that the
tone controls were not actually set for flat when centered, and I spent some
time finding out what was flat, and marked the positions.

I also had an Eico ST-70, which wasn't any better in terms of tone control
accuracy.

My favorite preamp at that time was the Marantz 7; the Citation I was too
noisy, in my opinion.

Mike Squires


****

To my ears, the PAS3 was "tooby" and hollow sounding, pretty lifeless . . .
The output impedance is fairly high so you can't drive much interconnect.

I tried the Van Alstine PAS3 kit which was both a marked improvement and a
disappointment for the time & $$$ spent.

IMHO you'd be much better off with a Hafler 110 or similar (yes solid state!
Blasphemy!)

Jon
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Dan Nicotera
Guest
Posted: Fri Jun 17, 2005 3:52 am    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
The Eico HF85's are a much better preamp.
They usually need somenew input jacks as the grounding is bad, but when
fixed up they are an excellent sounding preamp.
They have a wonderful phono stage also.
dan
"alison" <pjames@pcug.org.au> wrote in message
news:newscache$30n6ii$mc4$1@tomato.pcug.org.au...
Quote:
I am considering purchasing a dynaco PAS 3 pre amp. Does any one have any
experience/opinions regarding these pre amps?
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mike m
Guest
Posted: Fri Jun 17, 2005 4:02 am    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
alison wrote:
Quote:
I am considering purchasing a dynaco PAS 3 pre amp. Does any one have any
experience/opinions regarding these pre amps?


I agree with every one that the PAS 3 is a poor re-amp

I owned both a Fisher 400c and A heathkit SP-2a( dual mono w/ seperate
power supply) and a PAS3( veiled, muddy sound)
I liked the openness of the Heath kit as a line stage and the Fisher as
a phono pre-
Replaced them both for a audio research sp9 For $500.00 to $600.00 it
is night and day from the older units.
Mike M
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Guest
Posted: Fri Jun 17, 2005 4:45 am    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
If in doubt clone a Marantz 7. The only thing better is a phono stage
using passive RIAA rather than the feedback design, and to work well
they need to be built hell for stout-Tektronix/Collins standards.

Read the 1981 TAA article ,St.Pooge and the DRIAAgon, by Jung and
Marsh (I think). Build the power supply outboard or in a fully shielded
separate space. I would use a modern regulator and pass transistor for
regulated heaters.

The only big improvement not dealt with adequately in this article is
the use of a precision stepped attenuator, manually or stepper motor
activated (a remote control Marantz 7? Sure!).

The other thing is-the best line stage is no line stage. Electronic
powered devices-DAC's, CD players, and (unless youu are using a Millen
AM crystal set) tuners should drive power amps directly, in principle,
as i see it.

The stock PAS is not a good unit at all. Of course, is ANY stock Dyna
tube unit any good by modern standards?
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Guest
Posted: Sat Jun 18, 2005 4:45 am    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
OCSL/AudioXPress offers it as part of "The Pooge Chronicles". Amazon
says it's out of print but they are wrong: OCSL has several in stock (I
emailed them.) They also have the TAA back issues on CD in .pdf form.

If you are in the US you may get a copy of the 1981 article through
interlibrary loan at any library.
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Andy Evans
Guest
Posted: Sun Jun 19, 2005 3:34 am    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
Where can the TAA 1981 article be found, as I would like to improve my
M7
clone >

I have it somewhere - I built the Last Pas which sounded terrific.
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A S Goh
Guest
Posted: Sun Jun 19, 2005 8:56 pm    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
Hi Andy

I will be glad if you can email a copy of the article to me

Thank you

Goh A S
"Andy Evans" <performanceandmedia@gmail.com> wrote in message
news:1119134056.075082.118620@g44g2000cwa.googlegroups.com...
Quote:
Where can the TAA 1981 article be found, as I would like to improve my
M7
clone

I have it somewhere - I built the Last Pas which sounded terrific.
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alison
Guest
Posted: Tue Sep 13, 2005 1:33 pm    Post subject: Re: Dynaco PAS 3 Pre Amp Reply with quote
Thanks I dont think I will proceed with the purchase on the basis of the
comments provided.


"alison" <pjames@pcug.org.au> wrote in message
news:newscache$30n6ii$mc4$1@tomato.pcug.org.au...
Quote:
I am considering purchasing a dynaco PAS 3 pre amp. Does any one have any
experience/opinions regarding these pre amps?
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