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

Elektor News and offers from Elektor Magazine

Thread Tools Search this Thread
Old 18th March 2014, 08:16 AM   #1
MIDIMOGUL is offline MIDIMOGUL  United States
diyAudio Member
Join Date: Dec 2013
Location: Oklahoma
Default Unusual phono preamp

A long time ago (probably in the mid 1990s) Elektor published a rather innovative RIAA phono preamp based on two cascaded opamps. The first opamp would act as the low pass section of the RIAA equalizer, the second opamp was used for the necessary bass lift, as far as I can remember. This was published as part of a larger collection of schematics in one of the July/August double issues or in a Christmas issue, but it could as well have been in one of the later 30x Circuits books. The clever thing with this design is, that it is far less susceptible to input overload due to the very low gain of the first stage and its attenuation of the transients caused by record damage, and thus it actually reduces the effect of surface crackles caused by debris or scratches in the groove of a vinyl record. I never got to buoild this circuit mainly due to lack of time. Can anyone remember this circuit and possibly post a scan of the schematic ? I would like to test this circuit, as it may be very advantageous to use for digitizing old records. Your help would be deeply appreciated.
  Reply With Quote


Unusual phono preampHide 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
Phono Preamp PCB wanted - Transcendental Sound Grounded Grid Phono Preamp nathanjh13 Analogue Source 0 14th June 2012 10:19 AM
Phono Preamp cbj591 Tubes / Valves 1 1st August 2010 05:40 PM
Battery Powered Microphone Preamp - Unusual Application mrevie Solid State 1 21st July 2009 01:37 AM
new phono stage or old preamp with phono? flohmann Analog Line Level 2 2nd October 2008 09:51 PM
Electret mic preamp - will phono preamp work? darthmullet Analogue Source 6 12th October 2007 07:32 AM

New To Site? Need Help?

All times are GMT. The time now is 06:54 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio