Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

USSPA Build thread
USSPA Build thread
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 3rd October 2019, 06:57 PM   #91
manniraj is offline manniraj  India
diyAudio Member
 
Join Date: Nov 2012
Thank you and it does look cool having both the positive and negative supply on the same board.
  Reply With Quote
Old 7th October 2019, 10:23 AM   #92
AnthonyA is offline AnthonyA
diyAudio Member
 
Join Date: Aug 2017
I'm itching to do a full carbon version balanced with darlingtons what ya think papa fab
  Reply With Quote
Old 8th October 2019, 02:49 AM   #93
fab is offline fab  Canada
diyAudio Member
 
fab's Avatar
 
Join Date: Mar 2004
Location: Canada
Hi AnthonyA
Sure why not, go for it. But remember there is only one papa and I am only a gorilla
Fab
__________________
My stuff USSA, FSSA: https://fabaudio.online
  Reply With Quote
Old 14th October 2019, 04:13 PM   #94
AnthonyA is offline AnthonyA
diyAudio Member
 
Join Date: Aug 2017
Few months later.

Much further burn in. Must have clocked around 700+ hours. Usspa is liquid. Airy. Full of emotions bloom and details. A pleasure to listen to. . As expected. Ceramic cap / China pcb supply and such takes very long time to sound good. Metal films and new transformer too.

It's not really stable yet the sound.. But those who made it.. Keep playing it... You will be pleasantly surprised! It have a tube sound yet with reserve to kick up a storm. Without sounding tensed. I'm floored.

Thanks Fab... Great stuff
  Reply With Quote
Old 18th October 2019, 05:44 PM   #95
fab is offline fab  Canada
diyAudio Member
 
fab's Avatar
 
Join Date: Mar 2004
Location: Canada
You are welcome AnthonyA
Fab
__________________
My stuff USSA, FSSA: https://fabaudio.online
  Reply With Quote
Old 28th October 2019, 11:22 AM   #96
meanie is offline meanie  Singapore
diyAudio Member
 
Join Date: Jul 2018
Location: Singapore
A dedicated power supply is being built, while the USSPA is working well using the YARRA preamp for testing....

Click the image to open in full size.
__________________
Marantz 7 clone - BA3FE - Yarra/Melbourne Preamp - USSPA - Korg Nutube - BabyHuey EL34s - 2ACAs - F6 - M2XSLB - 2Whammy -
USSA5SLB
  Reply With Quote
Old 28th October 2019, 11:40 AM   #97
AnthonyA is offline AnthonyA
diyAudio Member
 
Join Date: Aug 2017
What is the diff with korg nutube?
  Reply With Quote
Old 5th November 2019, 11:23 AM   #98
brianco is offline brianco  Ireland
diyAudio Member
 
brianco's Avatar
 
Join Date: Aug 2005
Location: Scottish Borders - Kelso; on the famous Tweed River!
@ Fab,

Many thanks....PCB arrived!

I, too, intend using the Salas Mesmerise as a PS and switching unit...
  Reply With Quote
Old 6th November 2019, 01:36 AM   #99
fab is offline fab  Canada
diyAudio Member
 
fab's Avatar
 
Join Date: Mar 2004
Location: Canada
Thanks for the confirmation Brianco.
Looking forward to seeing your build.
Fab
__________________
My stuff USSA, FSSA: https://fabaudio.online
  Reply With Quote
Old 8th November 2019, 11:05 PM   #100
brianco is offline brianco  Ireland
diyAudio Member
 
brianco's Avatar
 
Join Date: Aug 2005
Location: Scottish Borders - Kelso; on the famous Tweed River!
on another factor, there is a very interesting post by Salas for those wishing to use his Mezmerise pre-amps as a power supply for the Pass B-3 as a preamp. I have taken the liberty to cut and paste his advice here:


"Don't use blue leds because noisy, just replace the fifth red led closest to rail per side with 2kOhm rheostats.
Bodge them there. They will give ample voltage range.

You may leave them in or measure what adjust resistance to rail goal each then put resistors in their place.

Its for a 45mA bias per side load. It will not move away from there, no more than few mA on line level loads.
With 18//18 Ohm 2W CC setting resistors you get +/- 200mA standing current limit on a Mez board's PSU section.

BTW Ultrabib is even better. But its not a selector + psu combo like the Mez board. Standalone shunt PSU sections."
  Reply With Quote

Reply


USSPA Build threadHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mod-286 build thread HarmonicTHD Chip Amps 198 21st October 2018 06:31 PM
F5-HA Build Thread cloud85 Pass Labs 57 29th November 2016 08:34 PM
SE - Build Thread soundengine355 Solid State 6 27th June 2009 01:19 AM
My SE KT-88 Build thread athos56 Tubes / Valves 13 21st December 2008 07:16 AM
The ESL Build Thread BillH Planars & Exotics 172 8th November 2006 10:01 PM


New To Site? Need Help?

All times are GMT. The time now is 02:17 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki