Guys, received today the MXE-7150 mic 
!
It will be tricky to measure this 5 1/4 medium : http://www.diyaudio.com/forums/multi-way/240636-acoustical-filter-tweeters.html#post3592307
Luckilly it's a tri-Amped speaker, so mid can be feeded only !
Distance : 1 Meter ?
Could be fun to compare this mid with its passive filter to the others 5,1/4 " !
In Hollywood, don't we say : silly connes ?
!It will be tricky to measure this 5 1/4 medium : http://www.diyaudio.com/forums/multi-way/240636-acoustical-filter-tweeters.html#post3592307
Luckilly it's a tri-Amped speaker, so mid can be feeded only !
Distance : 1 Meter ?
Could be fun to compare this mid with its passive filter to the others 5,1/4 " !
In Hollywood, don't we say : silly connes ?
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Guys, received today the MXE-7150 mic
Congratulation (me envy) think you got a HQ microphone there that can run good precision even without correction file.
Is it possible compare a measurement to a cheaper or out dated microphone and share : )
Thanks BYRTT, I follow all your advices of the round 4 thread, seemed to me than this mic worth the extra : given also with a full like a semi-anechoic calibration !
Yes good idea, I have a non calibrayed ECM-8000 than I bought 50 euros in second hand when the new one was still 100 euros ! Measurements made with it on the Boston Lynnfield 400L in the link above are not accurate, and I changed of notch value since in the speaker of this thread ! (my main, having also a Kef 104.2 ref, and a Proac D15 (wooden carbon cone (one "n" only !).
Not having so much money to buy too much drivers, I think here the money is well spend for my Learning curve to understand more about drivers, speakers and room interraction ! I read you a lot guys !
Yes good idea, I have a non calibrayed ECM-8000 than I bought 50 euros in second hand when the new one was still 100 euros ! Measurements made with it on the Boston Lynnfield 400L in the link above are not accurate, and I changed of notch value since in the speaker of this thread ! (my main, having also a Kef 104.2 ref, and a Proac D15 (wooden carbon cone (one "n" only !).
Not having so much money to buy too much drivers, I think here the money is well spend for my Learning curve to understand more about drivers, speakers and room interraction ! I read you a lot guys
!
Because it comes from Alumina?
Lol because Aurum is Latin, not English?
I honestly have no idea lol. But the 'um's seem to be in the minority
But then we have Pb....Latin.
Is it me? Or is half the periodic table Latin and the rest English?
Why???? Its so annoying.
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Harmonic Distortion of All Drivers
HD data taken at 0.5m with ~96dB SPL for equivalent to 90dB at 1m. For reference, cursor was placed at 1kHz for HD values shown in the legend. The BMR was quite poor from this regard and the NE65W had an unfortuante bump near 1kHz. FR88EX has a wide bump near 6kHz. W2-852 has a spike at 1.7kHz and another smaller at 3.6kHz. The two leaders appear to be the TC7FD and Alpine in the low distortion department - could this partly be why they fared so well in votes?
Alpine:
TE BMR:
Fountek FR58EX:
Peerless NE65W:
Fountek FR88EX:
Tang Band W2-852SH:
Vifa TC7FD:
HD data taken at 0.5m with ~96dB SPL for equivalent to 90dB at 1m. For reference, cursor was placed at 1kHz for HD values shown in the legend. The BMR was quite poor from this regard and the NE65W had an unfortuante bump near 1kHz. FR88EX has a wide bump near 6kHz. W2-852 has a spike at 1.7kHz and another smaller at 3.6kHz. The two leaders appear to be the TC7FD and Alpine in the low distortion department - could this partly be why they fared so well in votes?
Alpine:
TE BMR:
Fountek FR58EX:
Peerless NE65W:
Fountek FR88EX:
Tang Band W2-852SH:
Vifa TC7FD:
Attachments
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X thanks plots, did know from comments back in time around FR88EX it have a good HD profile, in round 5 plots low cost TC7FD00-04 also not bad at HD.
Made me have a look at Zaph Audio website and Timothy Feleppa (TMM here diyA) website too, both have nice data FR88EX and TC7FD00-04 listed and if any interested they linked below.
Personally interested in speaker measurement above 20kHz, own a UMM-6 and UMIK-1 provided with calibration files and a ECM8000 without calibration file. Their spec say up to 20kHz and ask can these be calibrated by pro company above 20kHz. UMM-6 and UMIK-1 have USB sound device interface which suppose have stop-band filter at digital fs/2 that exclude them but then analog ECM8000 wired up a 192kHz sound card system. Zaph Audio and Timothy Feleppa show more bandwidth than plots by X, Zaph writes he use ECM8000 calibrated and the cal file includes the mic cable and the speaker cable and Feleppa a EMM-6 provided with an individualised frequency response calibration. Aware of Earthworks M30 and M50 but rather wont like to talk about them because of high cost at hobby level. When looking at www.isemcon.net where from Eldam got a nice new EMX-7150 all example calibration files show what ever they for EMX-7150 or ECM8000 only up to 20kHz, and confuse me when Zaph and Feleppa seems measure HF up quite high.
Links TC7FD00-04:
Zaph Audio frequency response - http://www.zaphaudio.com/temp/Vifa-TC7FD00-04-FR.gif.
Zaph Audio harmonic distortion - http://www.zaphaudio.com/temp/Vifa-TC7FD00-04-HD.gif.
Zaph Audio cumulative spectrum decay - http://www.zaphaudio.com/temp/Vifa-TC7FD00-04-CSD.gif.
Timothy Feleppa frequency response - http://feleppa.com.au/pics/speaker_imgs/plots/TC7_FreqResp.png.
Timothy Feleppa harmonic distortion (RAW) - http://feleppa.com.au/pics/speaker_imgs/plots/TC7_RawHarm.png.
Links FR88EX:
Zaph Audio frequency response - http://www.zaphaudio.com/temp/Fountek-FR88-EX-FR.gif.
Zaph Audio harmonic distortion - http://www.zaphaudio.com/temp/Fountek-FR88-EX-HD.gif.
Zaph Audio cumulative spectrum decay - http://www.zaphaudio.com/temp/Fountek-FR88-EX-CSD.gif.
Timothy Feleppa frequency response - http://feleppa.com.au/pics/speaker_imgs/plots/FR88_FreqResp.png.
Timothy Feleppa harmonic distortion (RAW) - http://feleppa.com.au/pics/speaker_imgs/plots/FR88_RawHarm.png.
Main page Zaph Audio - Zaph|Audio.
Main page Timothy Feleppa - Timothy Feleppa's Pages.
Made me have a look at Zaph Audio website and Timothy Feleppa (TMM here diyA) website too, both have nice data FR88EX and TC7FD00-04 listed and if any interested they linked below.
Personally interested in speaker measurement above 20kHz, own a UMM-6 and UMIK-1 provided with calibration files and a ECM8000 without calibration file. Their spec say up to 20kHz and ask can these be calibrated by pro company above 20kHz. UMM-6 and UMIK-1 have USB sound device interface which suppose have stop-band filter at digital fs/2 that exclude them but then analog ECM8000 wired up a 192kHz sound card system. Zaph Audio and Timothy Feleppa show more bandwidth than plots by X, Zaph writes he use ECM8000 calibrated and the cal file includes the mic cable and the speaker cable and Feleppa a EMM-6 provided with an individualised frequency response calibration. Aware of Earthworks M30 and M50 but rather wont like to talk about them because of high cost at hobby level. When looking at www.isemcon.net where from Eldam got a nice new EMX-7150 all example calibration files show what ever they for EMX-7150 or ECM8000 only up to 20kHz, and confuse me when Zaph and Feleppa seems measure HF up quite high.
Links TC7FD00-04:
Zaph Audio frequency response - http://www.zaphaudio.com/temp/Vifa-TC7FD00-04-FR.gif.
Zaph Audio harmonic distortion - http://www.zaphaudio.com/temp/Vifa-TC7FD00-04-HD.gif.
Zaph Audio cumulative spectrum decay - http://www.zaphaudio.com/temp/Vifa-TC7FD00-04-CSD.gif.
Timothy Feleppa frequency response - http://feleppa.com.au/pics/speaker_imgs/plots/TC7_FreqResp.png.
Timothy Feleppa harmonic distortion (RAW) - http://feleppa.com.au/pics/speaker_imgs/plots/TC7_RawHarm.png.
Links FR88EX:
Zaph Audio frequency response - http://www.zaphaudio.com/temp/Fountek-FR88-EX-FR.gif.
Zaph Audio harmonic distortion - http://www.zaphaudio.com/temp/Fountek-FR88-EX-HD.gif.
Zaph Audio cumulative spectrum decay - http://www.zaphaudio.com/temp/Fountek-FR88-EX-CSD.gif.
Timothy Feleppa frequency response - http://feleppa.com.au/pics/speaker_imgs/plots/FR88_FreqResp.png.
Timothy Feleppa harmonic distortion (RAW) - http://feleppa.com.au/pics/speaker_imgs/plots/FR88_RawHarm.png.
Main page Zaph Audio - Zaph|Audio.
Main page Timothy Feleppa - Timothy Feleppa's Pages.
I had the same question before buying the mic because having myself an aluminium tweeter climbing to 30 Khz with a passive physical patented filter in front of the tweeter which is a notch setuped around 20 K hz to break the typical peak hard cones have ! But as Stereophile measured a higher peak on the same driver in the Boston Lynnfield 500 L, I would have liked to have a 30 k hz mic... but their price are much more expensive !
Hi,
I've been following this thread for awhile and also about BMR
System Overview | Tectonic Audio Labs
(Please read the Feedback Control section)
I'm really curious that perhaps BMR and recording microphone doesn't work well together
What do you guys think?
I've been following this thread for awhile and also about BMR
System Overview | Tectonic Audio Labs
(Please read the Feedback Control section)
I'm really curious that perhaps BMR and recording microphone doesn't work well together
What do you guys think?
The Tectonic Audio Labs in the link: System Overview | Tectonic Audio Labs
is a different company than Tectonic Elements Ltd, the manufacturer of the TE BMR driver tested here: http://www.parts-express.com/pedocs...9111X1517312Xf9228fa38c2a5ae8f67f86a4d3ec7a31
The BMR driver here is a flat diaphragm as Perceval said, whereas the other is a distributed mode loudspeaker (DML). There is a DML thread in this forum, btw.
http://www.diyaudio.com/forums/full-range/272576-study-dmls-full-range-speaker.html
is a different company than Tectonic Elements Ltd, the manufacturer of the TE BMR driver tested here: http://www.parts-express.com/pedocs...9111X1517312Xf9228fa38c2a5ae8f67f86a4d3ec7a31
The BMR driver here is a flat diaphragm as Perceval said, whereas the other is a distributed mode loudspeaker (DML). There is a DML thread in this forum, btw.
http://www.diyaudio.com/forums/full-range/272576-study-dmls-full-range-speaker.html
I hope to be cutting wood again soon. I am adding a buyout Jamo 1" dome tweeter to the Vifa PC9 on the 19"x19" open baffles I use on top of H-frames. I am also cutting holes into another baffle for my old Fostex 168z plus Radio Shack 1310 super tweeter. I'm adding tweeters to full range drivers these days.
In the meantime I'm still enjoying the Dayton PS95 - sans tweeter.
In the meantime I'm still enjoying the Dayton PS95 - sans tweeter.
Has anyone tried a GRS 3FR-4? They seem to have a decent sized magnet and nice shape. $4.88ea may be worth it for some test projects or kitchen K'nator speakers/Bluetooth box. Looks very promising and may be worth throwing in to your next order from PE.
GRS 3FR-4 Full Range 3" Speaker Driver 4 Ohm
GRS 3FR-4 Full Range 3" Speaker Driver 4 Ohm
I believe you will have a lot of difficulty to find better than the 10F/8 ohms ! Maybe the Fountek, but how to tame the high peaks in the high end (at least with or mic which are not going above 20K ?)
A question to to you please, I posted already but I re ask with some others parameters as I'm intrigued : it's about the 8 x bass drivers and how to source them !
My understanding is you need a VAS below 20 liters by driver for the 9 liters two drivers cabinet ! Am I correct ? the lesser VAS, the better ?
Is there an ideal Qts for them ? more around 0.3 or more around 0.5/0.6 just because the load is a sealed one ?
The motivation of the question is how to match (as usual) the speed of the driver at the apex of a horn with the drivers below ! I assume the 4 bass drivers help for the dynamic behavior as well ! But how do you wire them : in // .... 2 ohms load ???? Where am I wrong here please ?
It's off topic here and it's more a personal question : if I only use the Trynergy for the 10F, could the imaging be worse if I use a direct driver (Active EQ and phase FIR) between 80 hZ and the 400 Hz XO ?
Btw what is the expansion of the tatrix please ? 90° ?
Many question in once not to pollute the thread too much...
Tommorrow I should start my measurements....
Vive la musique !
! Maybe the Fountek, but how to tame the high peaks in the high end (at least with or mic which are not going above 20K ?)A question to to you please, I posted already but I re ask with some others parameters as I'm intrigued : it's about the 8 x bass drivers and how to source them !
My understanding is you need a VAS below 20 liters by driver for the 9 liters two drivers cabinet ! Am I correct ? the lesser VAS, the better ?
Is there an ideal Qts for them ? more around 0.3 or more around 0.5/0.6 just because the load is a sealed one ?
The motivation of the question is how to match (as usual) the speed of the driver at the apex of a horn with the drivers below ! I assume the 4 bass drivers help for the dynamic behavior as well ! But how do you wire them : in // .... 2 ohms load ???? Where am I wrong here please ?
It's off topic here and it's more a personal question : if I only use the Trynergy for the 10F, could the imaging be worse if I use a direct driver (Active EQ and phase FIR) between 80 hZ and the 400 Hz XO ?
Btw what is the expansion of the tatrix please ? 90° ?
Many question in once not to pollute the thread too much...
Tommorrow I should start my measurements....
Vive la musique !
Not the GRS but I will purchase these on my next PE order. I may make a Madisound order too as the holidays are coming... Fostex FF85WK (unless I decide $45 is nuts).
Visaton FRS8-8 3.3" Full-Range Speaker 8 Ohm
I'm using these on OB and the Visaton looks interesting.
Fountek FE85 3" Full Range Speaker Driver
Unless someone convinces me the Fountek 88 is worth the extra cost.
Attached are sims with XBaffle for a few 3" drivers. The Vifa eeks out a db or two before rolling off like the rest.
Eldam, in honor of France I updated my signature but it's not showing. Can anyone tell me why?
Visaton FRS8-8 3.3" Full-Range Speaker 8 Ohm
I'm using these on OB and the Visaton looks interesting.
Fountek FE85 3" Full Range Speaker Driver
Unless someone convinces me the Fountek 88 is worth the extra cost.
Attached are sims with XBaffle for a few 3" drivers. The Vifa eeks out a db or two before rolling off like the rest.
Eldam, in honor of France I updated my signature but it's not showing. Can anyone tell me why?
Attachments
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