Any connection between Aleph dynamics and transformer! - 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 14th April 2005, 11:43 AM   #1
diyAudio Member
 
Join Date: Jan 2004
Location: Croatia
Default Any connection between Aleph dynamics and transformer!

Is there any connection between sound (especially dynamics) and the transformer rating?
I'm asking this because I have two 300VA toroids per channel in my Aleph 5, and now I have some extra cash so I thought it would be good to make my Aleph better.
What can I expect from 500VA per channel?
  Reply With Quote
Old 14th April 2005, 07:14 PM   #2
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Because current in class A amps is constant and the 300VAs seems to be able to do the job, you will gain nothing with replacing them with 500VAs.

/Hugo
  Reply With Quote
Old 14th April 2005, 07:48 PM   #3
diyAudio Member
 
Join Date: Jan 2004
Location: Croatia
Thanks. I thought so, but I wasn't sure after I red Nelson's "Power supply" paper!
  Reply With Quote
Old 14th April 2005, 08:51 PM   #4
Blues is offline Blues  United States
Lightning In A Bottle
diyAudio Member
 
Blues's Avatar
 
Join Date: Sep 2003
Location: The Milky Way
I believe it will help any Aleph. The Aleph's current source, besides a 0% ACIG setting, will try to deliver more current in lower impedances in Class AB. Having a transformer only able to deliver an Aleph's rated Class A power will be strained in my opinion and might sound hard depending on your speakers' impedance variations. The feedback on the Aleph current source sets the current sharing in the +/- signal and also allows the Aleph to deliver Class AB power beyond its Class A DC bias.
  Reply With Quote
Old 14th April 2005, 09:02 PM   #5
diyAudio Member
 
wuffwaff's Avatar
 
Join Date: Aug 2001
Location: Ingolstadt Germany
Hi,

up until 50% ac current gain the mean power taken from the power supply will be the same all the time regardless of signal.

This doesnt mean that other transformers will sound the same as they also function as mains filters, sources for magnetic fields etc. etc.

I think the power supply caps are (generally speaking) more important for dynamics cause they have to deliver the short peaks needed. So before you invest in bigger trannies you could try more caps......

William
__________________
een ooievaar is geen konijn want zijn oren zijn te klein!
  Reply With Quote
Old 14th April 2005, 09:38 PM   #6
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
I think it's a question of diminishing returns. A constant average
draw design like the Aleph is less sensitive to transformer
rating once the minimum requirement is met, but we still like
them bigger, don't we...
  Reply With Quote
Old 14th April 2005, 10:13 PM   #7
Banned
 
Join Date: Mar 2005
Location: Australia
Netlist []
Poseidon's Horse
diyAudio Moderator

Offline
Registered: Jan 2003
Location: Belgium


Post #2
Because current in class A amps is constant and the 300VAs seems to be able to do the job, you will gain nothing with replacing them with 500VAs.

-------------------------------------------
you does gain more reliability and easthetic appeal arent you
guys do the same thing to look like those professionals making
high-end stuff, and dont forget the other stuff like overrated heatsinks and gold plated stuff etc
  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
need help on transformer secondaries connection atenolol50 Tubes / Valves 6 26th September 2008 08:52 AM
Transformer Leg Connection Question mark845 Tubes / Valves 3 6th August 2006 02:31 AM
Best Aleph bi-amp connection Sony Pass Labs 9 26th February 2005 10:06 PM
Transformer connection for BOSOZ Yochim Pass Labs 3 6th September 2002 05:45 PM
Aleph 3 R114 connection Forte Pass Labs 4 30th October 2001 11:17 PM


New To Site? Need Help?

All times are GMT. The time now is 05:23 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