HQ Preamp - Elector scheme or other suggestion - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, 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 8th January 2011, 06:48 PM   #1
velicko is offline velicko  Serbia
diyAudio Member
 
Join Date: Jan 2006
Location: Serbia - Niska Banja
Default HQ Preamp - Elector scheme or other suggestion

I would like to build high quality preamplifier.

What I had in mind is, it should assume the following:

- battery power supply
- input switching with bipolar relays
- volume control with BB PGA2310
- schematics have to be verified, I would not experiment too much...

I have found something interesting, through the source I do believe in.
Project is published in Elector 1/97 (edition in English).
battery-operated pre-amplifier Desigh by T.Giesberts

Is it OK if I publish the schematics here?

I would use basic scheme and modify volume and selector parts...

I would very much like to get your opinion on this project before I start building.

Other suggestions (projects, schematics..) are also very welcome.

Preamp will be paired with Leach Amp.


Thank you.
  Reply With Quote
Old 8th January 2011, 07:21 PM   #2
diyAudio Member
 
BobEllis's Avatar
 
Join Date: Sep 2003
Location: Upstate NY
Lots of choices out there. how about Preamplifier Dispre 2 - JFET ?

If you're looking to use the PGA2310 because you plan a remote control, why not use it to control a LDR based attenuator? That should sound better.

If you don't need gain, search this forum for "poor Serbian man LDR based..." Attenuator and buffer or a Pass B-1 clone, you just add the input selection.
  Reply With Quote
Old 8th January 2011, 07:57 PM   #3
velicko is offline velicko  Serbia
diyAudio Member
 
Join Date: Jan 2006
Location: Serbia - Niska Banja
Quote:
Originally Posted by BobEllis View Post
Lots of choices out there. how about Preamplifier Dispre 2 - JFET ?

If you're looking to use the PGA2310 because you plan a remote control, why not use it to control a LDR based attenuator? That should sound better.

If you don't need gain, search this forum for "poor Serbian man LDR based..." Attenuator and buffer or a Pass B-1 clone, you just add the input selection.
Thank you for suggestions.
I need gain stage.

I would for this very preamp avoid LDR for two reasons:
- I already have a bunch od PGA waiting to be used, and I really like technical characteristics of those cheaps...
- I doubt that I would have to buy very large number of LDRs to match few perfectly, and again, I would add some difference by different light characteristics of LEDs...
  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
Preamp suggestion required pls milen007 Tubes / Valves 4 19th September 2009 04:53 AM
Suggestion for a bass preamp.. Dxvideo Chip Amps 4 29th July 2008 02:47 PM
Suggestion for this tube preamp fastvideo Tubes / Valves 7 14th July 2008 10:02 PM
Suggestion on the input transformer for tube preamp bee696 Tubes / Valves 3 2nd August 2006 05:43 AM
PREAMP suggestion for my IRAUDAMP. pat allen Class D 3 21st March 2005 01:42 AM


New To Site? Need Help?

All times are GMT. The time now is 08:01 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