Purely subjective test. Which do you prefer. - Page 4 - diyAudio
Go Back   Home > Forums > General Interest > Everything Else
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 26th January 2014, 07:14 PM   #31
diyAudio Member
Join Date: Nov 2004
Location: Germany
Seems the problem simply is input common-mode range. The TLE2072 is given with +5/-1.9 V typical on a +/-5 V supply, and there's a unity gain buffer in there that has to swing down to -2.83 V, as do its inputs. Which would correlate with distortion setting in a little under the -3 dBFS mark. The NJM5532 typically does +/- 3 V under the same conditions, hence no problems. (Got any mean >0 dBFS test signals like that fs/4, 90 sine? That ought to be it.)

For kicks, one could try a TL072... Inversion time!

Clearly a case of "plug'n'pray". Those are the perils of low supply voltages and non-RRIO opamps.
  Reply With Quote
Old 26th January 2014, 08:33 PM   #32
BYRTT is offline BYRTT  Denmark
diyAudio Member
Join Date: Dec 2009
So in this "plug and play electric" case seems only a voltage problem ("plug and play hardware" also needed attention where Mooly did a converter).
  Reply With Quote
Old 27th January 2014, 06:34 AM   #33
PMA is offline PMA  Europe
diyAudio Member
PMA's Avatar
Join Date: Apr 2002
Location: Prague
The distortion profile clearly showed clipping, as I have already mentioned.
  Reply With Quote
Old 28th January 2014, 09:52 AM   #34
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
Mooly's Avatar
Join Date: Sep 2007
Something different,
John Curl's Blowtorch preamplifier part II
  Reply With Quote


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
Really subjective question regal Tubes / Valves 24 1st March 2010 10:02 AM
Subjective evaluation consort_ee_um Everything Else 0 6th December 2007 10:21 AM
THE best subjective sound ? medogrizli Solid State 11 30th May 2007 11:56 AM
Subjective lunacy mikeks Solid State 24 18th September 2006 02:36 PM
purely resistive crossovers? googler Multi-Way 38 25th March 2005 07:04 PM

New To Site? Need Help?

All times are GMT. The time now is 08:19 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2