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  1. BYRTT

    KEF Q350 Speaker Review

    Its KEF's value or say cheapest series, therefor it should be natural its not the most top notch bracing and expensive round overs or expensive components used here and of course a diy'er could set in on that front, that said im pretty shure any work in that area wont change anything on the pro...
  2. BYRTT

    JBL One Series 104 Powered Monitor Review

    Hi in general many thanks share your data and experience so far ... : ) That said try understand how much important it is that the curve named "Directivity index" is fair smooth and none jagged when looking at the normal Spinorama plot, any none smoothness and jagginesh for that"Directivity...
  3. BYRTT

    Revel M106 Bookshelf Speaker Review

    Some visuals of what GR-Research did for M106... : ) Many multi wayers have build in blending interference that can be seen study smoothness quality of Spinorama's "Directivity index curve" and M106 is one of them going rough above 2500Hz, GR-Research is not fixing that problem but is...
  4. BYRTT

    Chane A1.5 Review (Bookshelf Speaker)

    Thanks for review and great data.. Good spotted MZKM :) tilted verticals minus 10º is visualized below if it can help AVS members, that said DI (Directory index) curve is a directly quality curve revealer and Chane A1.5 is bad there so the tilt will only help on paper in few other directivity...
  5. BYRTT

    Chane A1.5 Review (Bookshelf Speaker)

    Thanks share that manufacture graph but i think you be little surprised seeing their 100dB Y-axis & 20Hz-40kHz X-axis scales overlaid to Amir's anechoic analyze as seen below :)..
  6. BYRTT

    KEF R3 Speaker Review

    A normal minimumphase crossover type will add its phase turn (all-pass effect) :) that is kind of a distortion in relation to the raw recorded fundamentals of instruments or singers, not shure that wavelenght is larger is a good argue here but you have to look at the phase curves for 400Hz verse...
  7. BYRTT

    KEF R3 Speaker Review

    Had me a UMIK for many years but soon after stepped up to a analog German iSEMcon EMX-7150 so as to get dual channel sync, but what i remember was that its locked at 48kHz so if operating system and soundcard output or REW runs at 44,1kHz then we get sample rate mitchmatch and remember if one...
  8. BYRTT

    KEF R3 Speaker Review

    In general what is called "in room response" or "PIR (predicted in room)" or "estimated in room" is a declining curve as frequency increase, it falls about 0,7dB per octave in farfield, so a target curve for farfield PIR measurements are not a flat curve but a declining one about as seen i below...
  9. BYRTT

    Four Speaker Blind Listening Test Results (Kef, JBL, Revel, OSD)

    Hi @MatthewS and 1000 thanks share your hard work over here :)... Should you happen like below overlay of estimated in room/PIR curves you very welcome rightclick and save the gif file and use it for post 1.
  10. BYRTT

    KEF R3 Speaker Review

    Welcome :) and yes EQ can many times be amazing so if you happy suggest try below broad gentle correction for R3, it should optimize R3 for farfield listening (>2 meters) based Amir's anechoic analyze, of course there is no guarantee it sounds good at your acoustic location but on the other hand...
  11. BYRTT

    NHT C3 Review (3-way speaker)

    Come on, you get superior measurements for free here so suggest use them if you believe in science and then simply jump over the subjective part of the review would actual be a easy way to be here, that said its hard to figure out if you posted here for nothing other reason than a ASR...
  12. BYRTT

    KEF R3 Speaker Review

    Hi there :) will imagine you shall use other method to establish what PIR curve you really listen to, maybe ask member @thewas how to do it because he had shown fine PIR curves (orange curve seen into below Spinorama) for few systems that looks alot like the Spinorama PIR curve from Amir's...
  13. BYRTT

    ASR Headphone Testing and BK 5128 Hats Measurement System

    Excuse me in it sounds like you not up to date in the headphone story, long time ago Amir returned the 5128 analyze system and ended up buy a G.R.A.S 45CA analyze system, legendary 650 Sennheiser's has been reviewed onto both the 5128 & 45CA system, you can find the 650/5128 analyze somewhere...
  14. BYRTT

    JBL Stage A130 Review (speaker)

    Could be as simple as something is rattleing somewhere, for example the two +/- terminals on the back should be tightened if using banana plugs, also loose wires or components inside can be responsible or the tiny plastic phaseplug in front of the tweeter dome, think it should be okay easy...
  15. BYRTT

    Ascend Acoustics Horizon Center Speaker Review

    Think out of box it looks target voiced okay and most noise there is probably interference as port noise or so, until then have two EQ suggestions below that is based on Amir's anechoic analyze, upper one is my take on ideal for farfield target but it takes probably too many PEQ's for most so...
  16. BYRTT

    Natural Sound NS17 Review (Speaker)

    Think remember from @ctrl example that the real smoothest or linear one to omni naturals is the flat plane, the small acoustic lens example do increase directivity down lower in frequency to improve cooperation with the beaming woofer but up higher in frequency it cost some non optimal...
  17. BYRTT

    Revel M16 Speaker Review

    Agree you spot on and better tilt them if not within +/-10º verticals :)..
  18. BYRTT

    Natural Sound NS17 Review (Speaker)

    EQ filter in left side column below made Amir some okay happy under listening test, EQ filter in right side column is farfield optimized and on paper transfer curves to look alot like what Focal Aria 906's out of box curves was looking :)..
  19. BYRTT

    Natural Sound NS17 Review (Speaker)

    Looks Focal Aria 906 had close to same dispersion tendency, but where Focal dialed in a full baffle step loss correction filter for woofer domain then Natural Sound did only half or so a baffle step correction filter for woofer domain :)..
  20. BYRTT

    Audibility thresholds of amp and DAC measurements

    He said "0,1dB/octave" and that's not same as 0,1dB tilt across that same range :) 0,1dB/octave arrive at a 1dB difference @20Hz/20kHz..
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