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

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

New web page for active RIAA EQ design
New web page for active RIAA EQ design
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 15th February 2004, 01:38 AM   #1
andy_c is offline andy_c  United States
Join Date: Apr 2003
Default New web page for active RIAA EQ design

Hi all,

I realize that this topic has been beaten to death over the years, especially in the Lipshitz paper, but I've created a web page dedicated to the design of active RIAA equalization circuitry. It's not an "advocacy" site per se, but rather attempts to provide factual information. The question of "why yet another treatment of this subject?" is addressed there

There's info on how to match the Neumann time constant, which the Lipshitz paper doesn't deal with directly. You can probably obtain this info by doing more algebra on Lipshitz' results, but to do so would be, as Donald Rumsfeld might say, "a hard slog".

Most of the info is stuff from a paper I wrote when I was in college 23 years ago. I thought I'd just quickly write it up and put it on the web. It ended up taking a lot more time than I thought it would. One feature which I believe to be unique is the use of passive network synthesis techniques to get the component values. Specifically, a Foster expansion of the z11 of the feedback network is used. This is described in an appendix. This is different from what Lipshitz does. He derives the transfer function from the component values, then uses simultaneous equations to get the design equations from the analysis. In contrast, with the synthesis approach, the values just "pop out".

If you spot any errors, please let me know. Constructive criticism is most welcome. It's not likely that I'll do any other topologies, since my time is quite limited due to job and commute issues. However I'll surely correct any errors found.

The page is at http://home.mindspring.com/~andy_c/P...eampDesign.htm

I hope this will be useful to someone.
  Reply With Quote
Old 15th February 2004, 02:01 AM   #2
planet10 is offline planet10  Canada
diyAudio Moderator
planet10's Avatar
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
New web page for active RIAA EQ design

community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote


New web page for active RIAA EQ designHide 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
How much Feedback on active RIAA design? Stefanoo Solid State 9 9th February 2009 03:18 PM
active AD/DA xover as RIAA-amp? miksin Digital Source 14 15th July 2005 12:43 AM
RIAA preamp curve page? Darren Nemeth Analogue Source 3 20th January 2005 06:54 PM

New To Site? Need Help?

All times are GMT. The time now is 02:08 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio