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

Pass Labs This forum is dedicated to Pass Labs discussion.

0R5 Ribbon Apogee Scintilla drive: CCS Aleph 1.2 vs. X/XA/XS Series+Imp-Transformer
0R5 Ribbon Apogee Scintilla drive: CCS Aleph 1.2 vs. X/XA/XS Series+Imp-Transformer
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
Thread Tools Search this Thread
Old 20th July 2012, 06:51 PM   #1
tiefbassuebertr is offline tiefbassuebertr  Germany
diyAudio Member
tiefbassuebertr's Avatar
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Default 0R5 Ribbon Apogee Scintilla drive: CCS Aleph 1.2 vs. X/XA/XS Series+Imp-Transformer

OTL-driving of very low impedance full range ribbons is and remains still a challenge.
Most reliable option for driving of such full range ribbons are power amps with single ended output power stage because the obtained output power is not dependend from the load impedance (current drive). From this view this is the best solution, because there is no risk for destroy the power MOSFETs in the output stage.
Unfortunately the output power from the largest me known commercial single ended power amp is the Aleph 1.2 - go to
Pass Aleph 1.2 monoblock power amplifier Measurements | Stereophile.com
If I want more output power in this kind, presently only a diy solution is the way, because such commercial amp units are not available.

Well, what happens in case of the use from the X/XA/XS power amp series?
As I know, in this models only push-pull output stages are in use.
This means, either a protection circuit switch off the signal to the speakers or several fuses blown away.

But what about an additional impedance matching transformer (1:4 until 1:8) ??
I know, the sizes and wight must be very large. OTOH - two great advantage I will get: an ultimate DC protect and the use of each power amp without trouble cause not uncontrolled signal current flow.

Who are suppliers and manufacturers of such transformers?

About the follow URLs I don't read appropriate informations:
Apogee Scintilla amp
Attached Images
File Type: gif Apogee Scintillating impedance.gif (38.2 KB, 129 views)
File Type: gif Apogee scintilla_1ohm_only_crossover_schematic.gif (82.1 KB, 129 views)

Last edited by tiefbassuebertr; 20th July 2012 at 07:05 PM.
  Reply With Quote


0R5 Ribbon Apogee Scintilla drive: CCS Aleph 1.2 vs. X/XA/XS Series+Imp-TransformerHide 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
Apogee Scintilla amp Thomas B Pass Labs 32 24th September 2015 09:21 AM
Apogee Scintilla - Information about the Efficiency wanted tiefbassuebertr Planars & Exotics 52 18th February 2015 04:21 PM
Apogee ribbon questions... george a Planars & Exotics 18 17th November 2011 09:07 AM
Apogee Ribbon Repairable? Help! Bernie7 Planars & Exotics 5 30th July 2011 03:42 AM
Apogee Scintilla capacitors Dr.H Planars & Exotics 9 7th June 2009 05:35 PM

New To Site? Need Help?

All times are GMT. The time now is 01:33 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio