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.

Bellarie VP 129 mod
Bellarie VP 129 mod
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 4th December 2008, 06:23 AM   #11
analog_sa is offline analog_sa  Europe
diyAudio Member
analog_sa's Avatar
Join Date: Aug 2002
Location: Cascais
Bellarie VP 129 mod
Originally posted by faxurda
sawp with LME49720 but the pre-amp stay silent.

No immediately obvious reason. It is much faster than the 4580 and PCB layout and PS decoupling may not be up to the task. You may try decoupling caps directly on the pins.

Again, i don't get it: why try to make a silk purse out of something like this? With very little effort you'll build a better phono stage from scratch.
  Reply With Quote
Old 17th February 2013, 02:14 PM   #12
ahannan is offline ahannan
diyAudio Member
Join Date: Nov 2012
For U1/U2 you need a FET input op-amp like AD8620 (w/adapter), OPA2134 or TLE2072A. I tried he OPA2134 and didn't like it either. AD is expensive, TLE cheap, both work. To use the 4562 for U3/U4 you'll need to reduce the +Vb divider resistors by a factor of 10 (same voltage, lower impedance). I added film caps across all the electrolytic filter caps. Specialty film and SILMIC II in the signal paths.
  Reply With Quote


Bellarie VP 129 modHide 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

New To Site? Need Help?

All times are GMT. The time now is 11:28 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio