Phono Pre Amp - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

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

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 7th October 2012, 05:58 PM   #1
diyAudio Member
 
Join Date: Oct 2012
Default Phono Pre Amp

Hi All,

I've been reading these forums for the past few days. I've come up with a schematic and PCB based on the preamp design based on the TI application note "Application Note 1651 Keeping Up with the Expanding Demands of
High-Performance Audio". http://www.ti.com/lit/an/snaa046/snaa046.pdf

I also quickly put together a board for a simple LM317/337 +/-15V power supply.

Attached are the files.
Attached Images
File Type: png PreAmp.png (42.2 KB, 241 views)
File Type: png PreAmpPSU.png (35.2 KB, 237 views)
Attached Files
File Type: pdf PhonoPreAmp.pdf (22.0 KB, 109 views)
File Type: pdf PreAmpPSU.pdf (20.9 KB, 49 views)
File Type: txt PhonoPreAmpbom.txt (2.0 KB, 26 views)
File Type: txt PreAmpPSU_bom.txt (1.6 KB, 18 views)
  Reply With Quote
Old 7th October 2012, 06:03 PM   #2
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Moved to Analog Source. (Most phono stages are located here.)

Welcome to the forum, posting your project here is a good start!
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 11th October 2012, 04:04 PM   #3
rsavas is offline rsavas  Canada
diyAudio Member
 
Join Date: Aug 2012
Location: Ontario
Looks pretty good,let us know your test results and listening impressions.
May want to place some capacitors across the rectifier diodes to suppress the diodes switching transients.
Only one 100n cap at the LM317/337 inputs is required.
Do not rely on solder mask as an insulator for your heatsinks. Not sure if the will be sitting on the tip layer of the PCB.
Use 1% resistors for the RIAA equilization network & 2% film caps
I do not see any 100n/X7R bypass caps close to the supply pins of the opamps? These are necessary!!

Regards
Rick
  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
Phono pre-amp, TT PSU, mic pre-amp build log ptheskil Analogue Source 0 7th May 2012 03:55 PM
How Can I connect A Balanced RIAA Phono Pre-Amp to a Phono Plug amp input jmartinbaugh Analogue Source 3 25th April 2011 02:24 PM
Phono pre amp nhuwar Tubes / Valves 2 11th December 2008 07:16 PM
Phono pre amp - thanks SY lndm Tubes / Valves 21 14th March 2006 10:57 AM
Pre-pre; phono; pre line ;device discrete (bjt/fet) o op. amplifier GIPIONE Solid State 8 18th December 2005 10:09 PM


New To Site? Need Help?

All times are GMT. The time now is 10:37 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