Semisouth remaining stock - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 2nd November 2012, 07:16 PM   #1
316a is offline 316a  England
diyAudio Member
 
316a's Avatar
 
Join Date: Dec 2002
Location: West London
Default Semisouth remaining stock

I am assuming production is now over . Farnell now out of stock of just about everything

JFETs | Junction Gate FETs | Farnell United Kingdom | Results

Will the deliveries for the new products ever get there ?

316a
  Reply With Quote
Old 2nd November 2012, 08:33 PM   #2
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
There's not much information out there about any existing inventories.

Fortunately I made purchases for my own needs, but many DIYers are going
to have to substitute Mosfets parts in. This is not a huge problem, but the
SemiSouth R100 parts did have better overall performance.

  Reply With Quote
Old 2nd November 2012, 08:44 PM   #3
Variac is offline Variac  United States
diyAudio Editor
 
Variac's Avatar
 
Join Date: Dec 2001
Location: San Francisco, USA
Now you're looking more clever by 10x - I didn't think that was possible...

Quote:
Originally Posted by Nelson Pass View Post
There's not much information out there about any existing inventories.

Fortunately I made purchases for my own needs, but many DIYers are going
to have to substitute Mosfets parts in. This is not a huge problem, but the
SemiSouth R100 parts did have better overall performance.

  Reply With Quote
Old 2nd November 2012, 09:03 PM   #4
316a is offline 316a  England
diyAudio Member
 
316a's Avatar
 
Join Date: Dec 2002
Location: West London
Quote:
Originally Posted by Nelson Pass View Post
There's not much information out there about any existing inventories.

Fortunately I made purchases for my own needs, but many DIYers are going
to have to substitute Mosfets parts in. This is not a huge problem, but the
SemiSouth R100 parts did have better overall performance.

I've been an occasional lurker here for a while and find this forum an inspiration at times The Semisouth parts got me interested in solid state and a hybrid project I previously abandoned . Currently running a triode connected CCS loaded 4P1L driver and 200mH choke loaded R085 source follower . Given it the full 'tube' treatment with choke input , choke smoothed supply . I'm getting some very nice sounds and now want to build a duplicate amp with R100A . The low capacitance of these parts seems to almost be unique unless anyone else has some other suggestions for my application I do hope Teabag comes through

316A
  Reply With Quote
Old 2nd November 2012, 09:47 PM   #5
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
The 550's are still available and could be used in parallel.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 5th November 2012, 04:22 PM   #6
diyAudio Member
 
vdi_nenna's Avatar
 
Join Date: Oct 2000
Location: PA, USA
Blog Entries: 1
Send a message via Yahoo to vdi_nenna
Quote:
This is not a huge problem, but the
SemiSouth R100 parts did have better overall performance.
Mr Pass, that's interesting. With a Mosfet, the distotion performace might be higher (like in the Arch Nemisis), but does it sound as good as a Semisouth power JFET? Is there a sound quality difference? Will a Mosfet sound the same as a Semisouth in the same circuit?

Thanks.
__________________
I build, therefore I am.
  Reply With Quote
Old 5th November 2012, 06:28 PM   #7
generg is offline generg  Germany
diyAudio Member
 
generg's Avatar
 
Join Date: Jul 2009
Location: Near Frankfurt
@vdi_nenna

for fun I build my J2 clone also with IRFP240 on lower and upper position
the distortion was higher, the sound different,
you can say it in both ways, more veiled or more relaxed........ with a bit more body.
I could have lived with the Mosfet solution too, if I didn't have heard an original J2, that spoils... sorry to say it so often...... will be last time...!
__________________
and the First Wtt is......a really First Class PSS Idea

Last edited by generg; 5th November 2012 at 06:48 PM.
  Reply With Quote
Old 5th November 2012, 06:32 PM   #8
diyAudio Member
 
vdi_nenna's Avatar
 
Join Date: Oct 2000
Location: PA, USA
Blog Entries: 1
Send a message via Yahoo to vdi_nenna
Quote:
the distortion was higher, the sound different
Thanks Generg. I suspected as much, but really wanted to hear it from someone else.
You have verified my fears.

Thanks,

Vince
__________________
I build, therefore I am.
  Reply With Quote
Old 18th January 2013, 05:48 PM   #9
diyAudio Member
 
Join Date: Nov 2012
Default Semi South FET's

For any interested audio designers out there, franchised SemiSouth UK distributor Neutron LLP has a few SemiSouth SJEP120R063 devices still available to buy on first come basis. These parts are effectively 2 x SJEP120R100 in parallel in one package.

Contact : 01732 868646 email: sales@neutronltd.co.uk

Data sheet for SJEP120R063 is available for download on the SemiSouth web site which is still active as of date of this posting, otherwise can be obtained from Neutron.
Please note Neutron does NOT have any SJEP120R100 devices available.
  Reply With Quote
Old 18th January 2013, 11:39 PM   #10
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
SemiSouthFan appears to have some stock of parts including quantities of
something not in the catalog, and as he promised, he sent me some for
evaluation as to their DIY potential.

They are marked E120R10X, and now that I'm back at the coast, I will hook
them up and report back.

  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
"The Wire" Remaining Headphone Amp Boards and Kits opc Headphone Systems 204 15th December 2013 07:21 PM
Aleph 2 Built But Some Questions Remaining hifileslie Pass Labs 3 4th August 2009 06:30 PM
WTB: Stock or near stock ART DI/O buzzinghive Swap Meet 0 16th March 2007 09:06 AM
How to evaluate the laser pick-up remaining life beauty_divine Digital Source 3 11th November 2006 12:20 PM


New To Site? Need Help?

All times are GMT. The time now is 01:38 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2