Nelson Pass - Page 4

stefanobilliani · 4th September 2008, 07:50 PM

Quote:

Originally posted by Nelson Pass
Back in the early 90's, Pass Labs contracted with Mofi to build a replacement
cutterhead system. The existing system was Neumann driving an Ortofon
cutter head. The signal electronics of the original system used numerous
separate op amp based systems for gain, Eq, and feedback, and I reduced
this to a circuit using one LT1028. The power amplifiers driving the cutter head
were replaced by Class A complementary Mosfet amplifiers.

The project was more difficult than expected, but came out well.

Onestly when I listened to some of the new MOFI LPs and read of the new mosfet circuitry I thought that probably Passlabs was around there . Now I am confirmed .

yggdrasil · 4th September 2008, 08:33 PM

Quote:

Originally posted by Zen Mod

I would like to ask Mr. Pass what's 42?

The meaning of life.

RIZ074 · 7th September 2008, 06:08 PM

dear vdi_nenna....... I need to contact you about another project, however can't get your email.

vdi_nenna · 8th September 2008, 07:36 PM

Private emailed you.

juma · 19th October 2008, 08:43 PM

Hello Mr. Pass,
here is something in OT area but I think that you might be interested - at least as a physicist by education

Also:
http://www.veljkomilkovic.com/Images..._Lindemann.PDF

http://www.youtube.com/watch?v=gC6Qlj1Mbo8

http://www.youtube.com/watch?v=4foY5...eature=related

eyoung · 19th October 2008, 10:03 PM

I wear a 42.5 in Italian shoes, however i prefer Austrailian wines or Cali Siraz or Cabernet...

A long way from either,
Elwood

Nelson Pass · 20th October 2008, 07:31 PM

Quote:

Originally posted by juma
Hello Mr. Pass,
here is something in OT area but I think that you might be interested - at least as a physicist by education

Also:
http://www.veljkomilkovic.com/Images..._Lindemann.PDF

http://www.youtube.com/watch?v=gC6Qlj1Mbo8

http://www.youtube.com/watch?v=4foY5...eature=related

Best laugh I've had today. So far...

Manu · 20th October 2008, 08:32 PM

It continues here :

http://www.youtube.com/watch?=U82eWp...eature=related

Manu

Maitchy · 27th July 2010, 05:50 AM

Hi Mr Pass,
Thinking of innovations like the "Ion Cloud" speaker way back in the 1980's, and the importance of matching amplifiers with appropriate speakers (for efficiency, if nothing else), I wonder if the norm should be amplifiers built into (or somehow packaged with) speakers where the combination is engineered together? Buyers are used to this at the very low end of the market (e.g. "PC speakers"), but where the benefits are greatest there seems to be little happening. Do designers feel the consumers are not ready, or consumers feel the designers don't like the idea, or are there technical reasons for not pushing the concept??

janneman · 27th July 2010, 08:55 AM

Some more insights into Mr. Pass' mind

http://www.linearaudio.nl/Miscellaneous/np.pdf

jd

8th September 2008, 07:36 PM	#34
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA	Private emailed you. __________________ Zen, BOZ, BOZ-J, BLS, B1, Mini-A, Audio Sector NOS DAC, Gain Clone, F5, CAT5 Speaker Cable, DIY Allen Wright ICs, MOX II

19th October 2008, 10:03 PM	#36
eyoung diyAudio Member Join Date: Aug 2007 Location: Sunny SC,USA 15 min south of Charlotte NC	I wear a 42.5 in Italian shoes, however i prefer Austrailian wines or Cali Siraz or Cabernet... A long way from either, Elwood __________________ "when you open your mind to the imposible, soon you will find the truth...."

20th October 2008, 08:32 PM	#38
Manu diyAudio Member Join Date: Nov 2002 Location: Vienna, Ostrich	It continues here : http://www.youtube.com/watch?=U82eWp...eature=related Manu __________________ Manu, masked agent of entropy & ZMs Čiko

27th July 2010, 08:55 AM	#40
janneman diyAudio Member Join Date: May 2002 Location: Where Germany, The Netherlands and Belgium meet Blog Entries: 6	Some more insights into Mr. Pass' mind http://www.linearaudio.nl/Miscellaneous/np.pdf jd __________________ /New Linear Audio publication: Baxandall & Self on Audio Power!

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7th September 2008, 06:08 PM	#33
RIZ074 diyAudio Member Join Date: Sep 2008	dear vdi_nenna....... I need to contact you about another project, however can't get your email.

19th October 2008, 08:43 PM	#35
juma diyAudio Member Join Date: Nov 2005 Location: Zemun	Hello Mr. Pass, here is something in OT area but I think that you might be interested - at least as a physicist by education Also: http://www.veljkomilkovic.com/Images..._Lindemann.PDF http://www.youtube.com/watch?v=gC6Qlj1Mbo8 http://www.youtube.com/watch?v=4foY5...eature=related

27th July 2010, 05:50 AM	#39
Maitchy diyAudio Member Join Date: Feb 2006 Location: Christchurch	Hi Mr Pass, Thinking of innovations like the "Ion Cloud" speaker way back in the 1980's, and the importance of matching amplifiers with appropriate speakers (for efficiency, if nothing else), I wonder if the norm should be amplifiers built into (or somehow packaged with) speakers where the combination is engineered together? Buyers are used to this at the very low end of the market (e.g. "PC speakers"), but where the benefits are greatest there seems to be little happening. Do designers feel the consumers are not ready, or consumers feel the designers don't like the idea, or are there technical reasons for not pushing the concept??

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