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In Reply to: RE: Magnepan LRS posted by emailtim on February 21, 2021 at 21:49:23
Thanks for explanation. I was worried for a second until you went for the 'DIRAC solution....
I'm not doing any form of speaker correction.
If you want to REALLY get an eye / ear full? Go to Emotiva Lounge and find the DIRAC thread which is not up to OVER 150 pages. Have a bottle of Aspirin handy!
I did metrology for a living for years. And can assure anyone that the devil in DIRAC and similar sytems is repeataility of measurments. Doing it a different way than you did today is a recipe for confusion and disaster. Those on the DIRAC thread on EMO webiste are really in a state.
For example? Some settings of LFE would appear to apply a 10db BOOST to those frequencies. Some people are hung-up on what I'd consider (for music) massive SubWoofer Overkill.
I get it going from 101db speakers to something in mid / low 80s. Makes PERFECT sense. I have 1.6s and find a PAIR of Parasound A23 suit me fine.....One per speaker but NOT yet an active crossover. So while I am passively biamping, i do NOT get the full and potential 3db benefit were I o go full ACTIVE.
Without all the electronic aids I could EASILY see needing more than 10x the power when going from highly sensitive KLIPSCH to Maggies!
Too much is never enough
Follow Ups:
I started with an old DEQX unit, still have it. I have ARC DRC in my Anthem Statement D2V Pre/Pro but never liked what it did so completely disabled it.DIRAC has a PC software version that I have not tried, nor their embedded versions.
MarcL uses DIRAC for full blown home theater to good effect. I have seen his REW plots and his D50 clarity ratings are exemplary.
I have tried the Audiolense XO demo, but can't get consistent delay measurements with it on my PC. If I am going to use something for time and phase alignments, I need it to create consistent repeatable results.
I am using REW and RePhase. I get much better consistency/repeatable measurements with REW. I am also experimenting with REW on Realtime Linux to see if handles timing latencies better than Windows (with respect to measurements and playback).
Edits: 02/21/21
emailtim, what version of Linux you running, I'm using Mint Cinnamon 17.3 and 19.2 Thanks
I am testing Debian (10) Buster with the latest 5.9 buster-backports vanilla and realtime kernels on an Intel Atom D525 and i7-3770K.Kernel 5.10 hasn't been back-ported yet debian-buster.
I am also using the RedHat "tuned-adm" profile package, lightweight display manager and XFCE4 desktop, JRMC 26 and REW via ALSA direct to hardware.
Here are some of the latencies I have measured using cyclictest during 2 channel playback (X-axis is in microseconds).
https://www.audioasylum.com/forums/pcaudio/messages/18/183385.html
Edits: 02/22/21
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