looking for "ultrafast power amp" - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 9th December 2003, 10:55 AM   #1
diyAudio Moderator Emeritus
 
lumanauw's Avatar
 
Join Date: Oct 2002
Location: Bandung
Send a message via Yahoo to lumanauw
Default looking for "ultrafast power amp"

I'm looking for schematic of "ultrafast audio amplifier (#1+#2)) and "Non slewing audio power". Both are by Giovanni Stochino, and was in Wireless world/Electronic world Mar 1996, p256, May 1996, p410, Apr 1997, p278 , Aug 1998, p633.
I dont have any of those magazine.
Could anyone tell me where I can download it?
  Reply With Quote
Old 9th December 2003, 10:59 AM   #2
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
I don't think you can download it, but you can get back=issues here: http://www.softcopy.co.uk/mag/default.asp?dir=ew . Click on "audio".

Jan Didden
  Reply With Quote
Old 9th December 2003, 11:02 AM   #3
diyAudio Member
 
Join Date: Sep 2002
Location: Sweden
Searching the forum for Stochino immediately resulted in the
following thread Giovanni Stochino's ultra fast amp

Although it seems not to be quite the original schematic, the
thread contains this link
http://www.soton.ac.uk/~apm3/diyaudi...no_circuit.jpg
  Reply With Quote
Old 9th December 2003, 11:08 AM   #4
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
Selamat Malam lumanauw

If you don't succeed in finding them I can at least a part of those articles as photocopies since I have a lot of old EW&WW issues.

Regards

Charles
  Reply With Quote
Old 9th December 2003, 11:41 AM   #5
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Current feedback maybe?

http://homepages.strath.ac.uk/~cnbp111/amp1.html
http://www.diymania.net/pass/project/CF-Power.htm
http://www.analog.com/UploadedFiles/...17334AN211.pdf

BTW: I have the Giovanni pages somewhere. I'm not sure if I have the article or just the schematics.
__________________
/Per-Anders (my first name) or P-A as my friends call me
  Reply With Quote
Old 9th December 2003, 11:47 AM   #6
AKSA is offline AKSA  Australia
diyAudio Member
 
Join Date: Sep 2001
Location: Melbourne, Australia
Hi Lumanauw,

Saya kira amplifier ini tak terbaik; ada yg lebih jelas. Coba Pass Aleph - tak ada global feedback!

Yth,

Hugh, isterinya orang Jawa.........
__________________
Aspen Amplifiers P/L (Australia)
www.aksaonline.com
  Reply With Quote
Old 9th December 2003, 12:47 PM   #7
diyAudio Member
 
li_gangyi's Avatar
 
Join Date: Jun 2003
Location: Woodlands Circle
wow~!!! I didn't know a guy in Australia could do Malay...cool~!!!
__________________
Kids in the back seat cause accidents...Accidents in the back seat cause kids...
  Reply With Quote
Old 10th December 2003, 12:46 AM   #8
diyAudio Moderator Emeritus
 
lumanauw's Avatar
 
Join Date: Oct 2002
Location: Bandung
Send a message via Yahoo to lumanauw
Haah? Phase Accurate and AKSA can speak Indonesian? Where are you guys from? Have been here? Istrinya AKSA orang Jawa, dari mana? Thank you for the replies
The reason I'm looking for those articles is to see how can we make a fast amp. What is the key secret. Once I heard a direct comparison between Crown power amp and MC2 (MCsquare)professional power amp. MC2 gives better sound. In the spec, the MC2 is very fast, damping very high. When I took a peek inside it, the circuit is very-very simple compared to Crown. The components and output devices is not as many as first I tought will be. It is the best if I can get the MC2 schematic. But I think I will never get MC2 schematic, since it is a high price-running production amp, so I tried different schematic to study. Maybe they are using the same principle.
  Reply With Quote
Old 10th December 2003, 09:22 AM   #9
diyAudio Moderator Emeritus
 
lumanauw's Avatar
 
Join Date: Oct 2002
Location: Bandung
Send a message via Yahoo to lumanauw
I think the schematic in http://www.soton.ac.uk/~apm3/diyaud...ino_circuit.jpg is not a current feedback amp. It is ordinary voltage feedback amp.
Current feedback can make fast slew rate and high damping factor. But many dont like the sound it produces.
But is it the one that Stochino refer to "Ultra Fast Power Amp"?
Is it possible to make fast amp with ordinary voltage feedback?
  Reply With Quote
Old 10th December 2003, 10:16 AM   #10
AKSA is offline AKSA  Australia
diyAudio Member
 
Join Date: Sep 2001
Location: Melbourne, Australia
Hi Lumanauw (or is that Pak Lumayan??)

Istri lahir di Semarang, kerja di KOWAD di Jakarta. Kita menikah di catatan sipil di sana tahun 1983.......

A very high damping factor has little influence on the sound.

Most loudspeaker drivers are designed for voltage drive; with current feedback they don't give their best.

Cheers,

Hugh
__________________
Aspen Amplifiers P/L (Australia)
www.aksaonline.com
  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
What Does Fostex "Rated Input" and "Music Power" mark02131 Full Range 5 13th October 2012 06:18 AM
What makes an amplifier "bright", "warm", or "neutral"? JohnS Solid State 51 13th December 2009 07:42 PM
Fostex "rated input" and "music power" hugz Full Range 12 16th March 2006 05:33 PM
Some final pics of "Stacks" revisited and "Askew" with stand Andy G Multi-Way 2 3rd February 2005 07:07 AM
Anyone used Scan-Speak's "Flow Resistors" or "Aperiodic Vents"? Ignite Multi-Way 3 18th November 2001 09:42 AM


New To Site? Need Help?

All times are GMT. The time now is 07:19 AM.


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