It's actually more like 90 deg of shift from 3k to 10k. Axis for phase is on the right side and in in 30 deg major increments.
16 ohm as mentioned at pic header. havn't other.
Measured with umic at ~25-30 cm, driver mounted in infinite baffle.
Measured with umic at ~25-30 cm, driver mounted in infinite baffle.
Thinking about it a bit more that particular phase shift would noticeably impact the 3rd harmonic of the 750hz region so I can see why I might have thought it was happening down at the fundamental (it was, just relative to).
I'm still a bit skeptical, but I did get a familiar sick feeling in my stomach that tells me phase is broken... Anyone else get that?
Strange anecdote, I used to play shows with whole decades of frequencies intentionally out of phase (using a tuned allpass filter on left or right channel)...One time a very excited person approached me after my set and asked me how I got some of the sounds to come out of the walls... lol. It was tempting to leave him perplexed but I explained I was messing with the phase.
I'm still a bit skeptical, but I did get a familiar sick feeling in my stomach that tells me phase is broken... Anyone else get that?
Strange anecdote, I used to play shows with whole decades of frequencies intentionally out of phase (using a tuned allpass filter on left or right channel)...One time a very excited person approached me after my set and asked me how I got some of the sounds to come out of the walls... lol. It was tempting to leave him perplexed but I explained I was messing with the phase.
Last edited:
A whole show with messed up phase is just plain cruel 🙂
I think malls and supermarkets have teenager anti loitering devices that play almost ultrasonic noises like a rodent deterrent. Same could be applied to a lobby for general population but playing innocuous Muzak with messed up phase.
I think malls and supermarkets have teenager anti loitering devices that play almost ultrasonic noises like a rodent deterrent. Same could be applied to a lobby for general population but playing innocuous Muzak with messed up phase.
Hahahaahaha... So good! The effect could be maximized by tracking the subjects position and phase shifting multiple speakers after doing hrtf calcs. Yikes.
This article is really good:
The Human Ear | Richard the Piano Tuner
Key points:
- tests show human phase locking dies out above 5khz.
- the pitch of tones above 4 kHz increases with increasing sound level @@#!
So a speaker with peaking treble response will not only sound brighter, but the apparent pitches themselves will be perceived as shifted upwards!
Wow.
Best reason yet to go for a flat or near flat FR.
This article is really good:
The Human Ear | Richard the Piano Tuner
Key points:
- tests show human phase locking dies out above 5khz.
- the pitch of tones above 4 kHz increases with increasing sound level @@#!
So a speaker with peaking treble response will not only sound brighter, but the apparent pitches themselves will be perceived as shifted upwards!
Wow.
Best reason yet to go for a flat or near flat FR.
Last edited:
Not sure what you are saying Byrtt. The XO for the measurement was at 225Hz Linkwitz Riley 24dB/octave. That would be shifted way to the left.
xrk971 not your XO i mean people that use a speaker with XO to audition the sound clips that have a XO point in 1,5-4Khz for 2-3 or 4. order will have phase shift error 180-270 or 360º mening faster HF area, they live with that but it's a distortion. Now because 3FE22r16 actual have slower HF they hear a some relative more linear repaired group delay when listening the tracks that has been thru 3FE22r16 (FIR convolved 🙄).
Last edited:
This test is flawed, and not to be taken seriously. As the OP said originally he created the thread and tests just for fun.
Fun and flawed it is but appears to confirm that over half of respondents prefer a driver with a flat frrquency response (B and D).
Yes and A lot of the time, accuracy has nothing to do with it! 😀 In some senses it's a good analogy, there are aspects other than how well it tells the time that people like. However there are watches that are far more accurate than any speaker is.
The attached is woefully inaccurate, not waterproof, doesn't have an alarm function but it's still a very nice watch 😉 My old casio digital left it in the dust for accuracy, was waterproof, had an alarm and a small database! Much more practical, but doesn't look so good with a dinner suit 😉
Tony.
Attachments
Nice watch. I wear automatics too. I use Audacity and a mic to listen to the beats of the rotor click. You can record at 44.1kHz and get sufficient resolution to adjust it to within 5 seconds/day. Something nice about a mechanical object that doesn't need electricity to work day in day out.
I enjoy the flawed comparison.
If you don’t have any of the tested drivers you can see which are the flattest and hear them thru your system.
If you have one or more of the tested drivers you can compare how other drivers sound to yours. You can get an idea if they will be more forward in the midrange, have more or less treble, etc.
In the end, I think we confirmed that the MA driver did measure consistently based on other posts by freddiy, and company. We got to the bottom of that and moved on.
If you don’t have any of the tested drivers you can see which are the flattest and hear them thru your system.
If you have one or more of the tested drivers you can compare how other drivers sound to yours. You can get an idea if they will be more forward in the midrange, have more or less treble, etc.
In the end, I think we confirmed that the MA driver did measure consistently based on other posts by freddiy, and company. We got to the bottom of that and moved on.
More drivers have arrived and I am still waiting for the Visaton B80, a MA A7.3, and possibly the Kevlar cone Peerless (although I am not getting a good feeling that one will come). Here is the current lineup so far of the ones I have tested and recorded sound clips of:
From bottom left to right: Dayton RS100P-4, Dayton PS95-8, Peerless 830986, AHE7,
second row (from front): Scan Speak 10F/8424, Vifa TG9FD10-8, Vifa TC9FD18-8, Faital Pro 3FE22 r16
third row: Tang Band W4-1320SB, Fostex FF105WK, Radio Shack (Foster FE103) 40-1197, 69 cent wonders
fourth row: PRV 5MR450NDY-8, NSB (no stinkin' badges), Mark Audio CHN-70
If the B80 doesn't show up soon, we may have to go onto Round 2 without it...
Round 2 will include: Scan Speak 10F/8424, Vifa TG9FD10-8, Tang Band W4-1320SB, Fostex FF105WK, Peerless 830986, AHE7, Mark Audio A7.3, Visaton B80, and a surprise entry.
From bottom left to right: Dayton RS100P-4, Dayton PS95-8, Peerless 830986, AHE7,
second row (from front): Scan Speak 10F/8424, Vifa TG9FD10-8, Vifa TC9FD18-8, Faital Pro 3FE22 r16
third row: Tang Band W4-1320SB, Fostex FF105WK, Radio Shack (Foster FE103) 40-1197, 69 cent wonders
fourth row: PRV 5MR450NDY-8, NSB (no stinkin' badges), Mark Audio CHN-70
If the B80 doesn't show up soon, we may have to go onto Round 2 without it...
Round 2 will include: Scan Speak 10F/8424, Vifa TG9FD10-8, Tang Band W4-1320SB, Fostex FF105WK, Peerless 830986, AHE7, Mark Audio A7.3, Visaton B80, and a surprise entry.
Attachments
Last edited:
- Status
- Not open for further replies.