I do be curious about a 3 inch coaxial speaker in it.
http://www.amazon.com/Polk-Audio-3-5-Inch-Coaxial-Speakers/dp/B000P0LRUM
http://www.amazon.com/Polk-Audio-3-5-Inch-Coaxial-Speakers/dp/B000P0LRUM
I do not have them, maybe a cheap car one for testing somewhere, I can test it here soon.
3.5 x 3.5 mic amp pcb is ready, now populate it.
regards
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I still have nice drivers I would like to test before going to budget drivers.
Visaton B80 (paper cone Nd motor)
Fountek FR88EX (al cone Nd motor)
TG9FD10-8 (fiberglass cone ferrite motor)
TPY03W06GO0111 (black Kevlar cone TG9 ferrite motor)
Visaton B80 (paper cone Nd motor)
Fountek FR88EX (al cone Nd motor)
TG9FD10-8 (fiberglass cone ferrite motor)
TPY03W06GO0111 (black Kevlar cone TG9 ferrite motor)
Does the F10 not the one with the less distorsions ?
And the TC9 : the most linear one ?
Does the horn can change the results of the last non horned tests ? Or do you mean the combo in synergy with the 6.5" drivers from the same horn can change the story (i.e. finding the best subjective mix between the bass drivers and the FR standalone one in the Trynergy horn ?)
(PS : guys I found today the adaptator scew to putt my mic on the Photography tripod ! I know Wesayso want a measurement of my aluminium 6.5 mid and the whole speaker 😉 )
And the TC9 : the most linear one ?
Does the horn can change the results of the last non horned tests ? Or do you mean the combo in synergy with the 6.5" drivers from the same horn can change the story (i.e. finding the best subjective mix between the bass drivers and the FR standalone one in the Trynergy horn ?)
(PS : guys I found today the adaptator scew to putt my mic on the Photography tripod ! I know Wesayso want a measurement of my aluminium 6.5 mid and the whole speaker 😉 )
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Yes, I would like to see what the Lynnfield can do too. Is it possible to do a measurement with and without the mechanical resonance absorber strut over the driver? I would really like to see quantitative data that it has an effect.
The 10F does indeed have the least distortion for the 3.5in class. But the 5MR450NDY has even less at same SPL but is 5 in class.
I am curious about other drivers as they may give good value and close in low HD but much lower prices.
Not possible for the mid : it is in the same aluminium part ! But it should be possible for the tweeter which has an other sort of passive (patented as well) filter ! I will post on my last thread about the passive filter of the Boston Lynnfield 400L I opened two years ago in the multi way section to no pollute both the presents thread and the FR section (it's a 3 ways, even if the mid is interressant with its 125 Hz to 2600 Hz FR use (no more width than the 3" but at least almost in FR on the voice range with the main first harmonics).
Well, to come back on the trynergy, I was surprised than the 10F was better than the last TC9 because I believed that the tractix horn would had provided more accentuation of the spl curve than the same raw driver ! And I remember than the TC9 was maybe the most linear and the one which climbs the most in the treble (nearer than 10 K in the on/off axis than a 10F which is more close to 5 K Hz !)
What could be interressant with the bigger PRV Audio is to measure it alone in the Trynergy horn at a certain spl value and idem without the horn exactly in the same place. Both output spl being the same at mic position : so you can compare the peaks and digs onthe sp curve for the both configuration and also the distorsions.
Could be done only with a PA driver which has enough spl output when raw or with the same sealed volume if back sealed horn ! E.G. : 100 dB spl at mic position : 1 meter and lsitening position (if the PA driver can do it at listening position around conventional 15° at 3 meters !)
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Are you sure you weren't looking at the EQ'd response? They are similar but 10F has less dips up high for some reason - better damped cone?
No, I talked on the brands datasheets !! : The TC9 spl curve is the most impressive I ever seen for this size (I mean in comparaison with the others brands' datasheets - no real measurements as the ones you done for instance- I assume all are I.E. baffle !)
What unit of measurement are these files in?
How do I scale them as you've said?
Is there a way to make it so that they print to size on a wide format printer?
Sorry I honestly have no clue. I've never done anything quite like this before. My friend in architecture is way too busy these days to help me. I don't know if I will be able to use the laser cutter or if I will have to pull out the old jigsaw.
They use CAD or RHINO files on the laser cutter, do you have the files in that format in the lucky case I can get the fab lab to cut them?
Thank you!!
How do I scale them as you've said?
Is there a way to make it so that they print to size on a wide format printer?
Sorry I honestly have no clue. I've never done anything quite like this before. My friend in architecture is way too busy these days to help me. I don't know if I will be able to use the laser cutter or if I will have to pull out the old jigsaw.
They use CAD or RHINO files on the laser cutter, do you have the files in that format in the lucky case I can get the fab lab to cut them?
Thank you!!
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Nice mic 🙂 would you mind sharing correction file from that CD as "Import Frequency Response" into REW with X axis 2/30kHz Y axis 11/-13dB (SPL) 540/-540 (Phase).
Picture 1 is EMX-7150 response from brochure.
Picture 2 is my S/N correction file for UMIK-1 in REW "SPL & Phase" window.
Picture 3 is my S/N correction file for UMM-6 in REW "SPL & Phase" window.
Picture 4 is UMIK-1 and UMM-6 in REW "All SPL" window.
Look picture 2/3 UMM-6 has phase data added in correction file UMIK-1 has not.
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Ok,
I will ask you how to do when I will re open the thread (soon as now I have all the stuffs : just need to install REW on the old XP laptop which has already Rew, and uploaded the semi-anechoic calib correction file; I have also the old ECM-8000 as well as an other point of view - without calib-)
I surmise more a difference above 800 to 1000 Hz (room modes)....
I will ask you how to do when I will re open the thread (soon as now I have all the stuffs : just need to install REW on the old XP laptop which has already Rew, and uploaded the semi-anechoic calib correction file; I have also the old ECM-8000 as well as an other point of view - without calib-)
I surmise more a difference above 800 to 1000 Hz (room modes)....
X BMR drivers rumored to have better HF power response, would you predict those to be a mess when fire ring into Tractrix horn or do you think could perform better and or easyer to develop simpler throat entrance/phase plug tech.
If you take them to Kinko's ask the guy to print them to a certain actual scale. Use the throat dimension and compare to a ruler.
If you do it yourself, select the "tile print" feature in Acrobat or Acrobat reader. Adjust the scale until a test page of the throat prints at 2.00 inches. Then print all of them (3x3 pages of 8.5x11) and tape together to make plan.
A bit of trial and error to do yourself.
Kees,
You make nice PCB's! No wonder you are so good at custom amps.
Yes I am better with amps, loudspeakers are quite new for me, but I have to learn that also to get go further.
these are pcb ready for 1e mike amp a la Siegfried and 2e my own jig for speaker measurement having also a 10 watt class amp on it.
Last one is for later.
regards
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I have done measurements with the new amplifier and corrected mike.
Holmimpulse looks to do better then REW in my case, maybe trouble because of windows 10?
I think windows 10 is now so nice for this, and the audio codec on my pc has effects in them who maybe do not get off completely, seen the fall off below 100 hz can be caused that the mike is damaged or leaking, so I have ordered some new ones and a real usb soundcard so I have no more trouble with windows anymore. Or make a speacial pc for this kind of things with old windows version or linux.
regards
Holmimpulse looks to do better then REW in my case, maybe trouble because of windows 10?
I think windows 10 is now so nice for this, and the audio codec on my pc has effects in them who maybe do not get off completely, seen the fall off below 100 hz can be caused that the mike is damaged or leaking, so I have ordered some new ones and a real usb soundcard so I have no more trouble with windows anymore. Or make a speacial pc for this kind of things with old windows version or linux.
regards
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kees52,
You made nice PCBs thanks sharing, regarding errors in woofer measurements in the plots you write "free air", wouldn't they then make weird canceling patterns and look strange and need a simple baffle to be better.
You made nice PCBs thanks sharing, regarding errors in woofer measurements in the plots you write "free air", wouldn't they then make weird canceling patterns and look strange and need a simple baffle to be better.
I don't know if a flat cone would be better or worse. My guess is you want a curved cone that is round to make a phase plug have equal radial distances. Also back reflection into cone from bass driver might reflect less.
I did'nt now if speakers in a factory be measured that way, you are right using a baffle for good tests.
But you have a point, see link.
This explanes that tweeter do well in previous measurement.
https://www.jensentone.com/what_is_frequency_response_chart
Thanks, I ghet the hang of it now, no not myself.
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