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

Solid State Talk all about solid state amplification.

Sony receiver - ST-SB920 - Improvements?
Sony receiver - ST-SB920 - Improvements?
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 29th August 2004, 04:11 PM   #1
cyteen is offline cyteen  England
diyAudio Member
cyteen's Avatar
Join Date: Mar 2004
Location: S.E
Default Sony receiver - ST-SB920 - Improvements?

I've recently picked one of these up as an ebay bargain and am very pleased with it as far as detail goes but it does sound a little thin and the bass is lacking even with a good signal.

I was wondering if upgrading the opamp from the JRC 45580 to an OPA2604 or AD843 and generally uprating the capacitors in the power supply/amplifier sections to panasonic FC 50% or so larger than the existing itemswould go some way to fix these shortcomings.

Sony have used a combination of standard and nichicon VR or VR1. Should I just concentrate on replacing the items thought more important by the designers?

If anyone could take a look at the schematic and suggest some first steps to improving things I'd be greatful.

Sony ST-SB920 Manual
Attached Images
File Type: jpg stsb920slrg-small.jpg (7.0 KB, 96 views)
  Reply With Quote
Old 9th November 2006, 11:21 PM   #2
Triode is offline Triode  Netherlands
diyAudio Member
Join Date: Oct 2005
Hi, i know this is an old topic but i wonder if you made any mods to the ST-SB820 tuner? Mine sounds a little bit thin also. I would suggest to replace the coupling caps in the audio stage by a somewhat greater value, and replace the opamp by the OPA2604. And replace the muting transistors by a solid-state relais.
  Reply With Quote


Sony receiver - ST-SB920 - Improvements?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Another broken Sony receiver... won't turn on rkc7 Solid State 40 10th February 2012 10:05 AM
sony 6ch receiver help thetube0a3 Solid State 1 30th March 2009 06:41 PM
Sony Receiver GX60ES for $100, is it worth it? gychang Solid State 0 31st January 2007 02:15 AM
Realistic and Sony Receiver Questions alloyskull101 Solid State 0 9th January 2005 08:10 PM
A broken Sony receiver nickia Solid State 7 23rd March 2004 02:53 AM

New To Site? Need Help?

All times are GMT. The time now is 10:20 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