Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 15th May 2002, 12:53 PM   #1
sonnya is offline sonnya  Denmark
diyAudio Member
 
sonnya's Avatar
 
Join Date: Oct 2001
Location: Denmark
Smile Link to a guy who have made some digital volume control tests

http://www.mhennessy.f9.co.uk/preamp/analogue.htm

and http://www.mhennessy.f9.co.uk/preamp/index.htm

Sonny
  Reply With Quote
Old 15th May 2002, 02:55 PM   #2
paulb is offline paulb  Canada
diyAudio Member
 
Join Date: Jun 2001
Location: Calgary
Great link, Sonny. Looks like he's happy with the PGA2310.
  Reply With Quote
Old 15th May 2002, 03:22 PM   #3
diyAudio Member
 
Join Date: Aug 2001
Location: NYC
Sonny,
Thanks for the link. Very interesting. Indeed, his approach was very much like a marketing department's. No need to listen to a component, eliminate it because of that 'outrageous' distortion level of .01%. 5532s for buuffers. This is not a criticism, I'm merely trying to point out the dichotomy existing in the hi-end world, objective specification vs. subjective evaluation. No doubt, there is a happy medium, but I found it interesting that all decisions were made as to component selection without listening to them....

I can see it now,

NEKK'D MUD RASSL'N DEATH MATCH!!!

Douglas Self vs. ???????

Any volunteers?
  Reply With Quote
Old 15th May 2002, 03:47 PM   #4
diyAudio Member
 
Join Date: May 2002
Default How does it sound

Not wanting to get into subjective vs. objective debate, your comments on the sound of the IC attenuators would be useful.

Thanks.
  Reply With Quote
Old 15th May 2002, 06:12 PM   #5
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
Personally, I'd be leery of models which include buffers. However good or bad the attenuation network sounds, a built-in buffer removes that choice from the designer.

One could also consider a 7-relay discrete ladder, perhaps built with those US$0.75 NAIS AgPd/Au-AgPd micro relays that AllElectronics is selling.
  Reply With Quote
Old 15th May 2002, 11:12 PM   #6
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
Default Worried about BB/TXN?

The author was worried about Texas Instrument's permanence in the audio business. This would appear to be a "de minimis" risk. With respect to Dallas Semi, isn't it typical for distortion to rise with frequency?

I've often wondered why there isn't more use of voltage controlled amplifiers (the CLC series from National Semi come to mind) until I checked on the availability on www.findchips.com -- they just aren't available anywhere. (I got mine from Digikey) I have about a half dozen I intended to use in Automatic Gain Control. The distortion stats would seem comparable to the digitally controlled pots.
  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
digital volume control neazoi Parts 1 21st April 2009 08:56 AM
Digital volume control day1118 Digital Line Level 8 21st November 2008 08:11 PM
Digital Volume Control day1118 Solid State 27 19th November 2008 07:42 PM
Digital volume control maharadza Digital Source 9 8th April 2006 04:59 PM
Which VCA for Digital volume control gmphadte Analogue Source 8 30th September 2004 11:21 AM


New To Site? Need Help?

All times are GMT. The time now is 07:02 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