I made a new design with the Enviee driver that was lately much improved in the treble.
Tired of the problems that open baffles bring ( they have to be very big to have enough output in the lower reaches, there develops a notch in the fundamental tone area, hard to place in relation to the back wall ) i developed the " Acoustic Resistance Frame ".
More soon.
Tired of the problems that open baffles bring ( they have to be very big to have enough output in the lower reaches, there develops a notch in the fundamental tone area, hard to place in relation to the back wall ) i developed the " Acoustic Resistance Frame ".
More soon.
The main driver is an Enviee 2013.
I will show you a link.
I found that resonances on the baffle get down by 20dB with the tennis balls.
This is a bit counter intuitive but with hard coupling ( spikes ) the resonances are not evacuated but are bounced back from the floor into the baffle and go again to the floor and come back again, at infinitum.
I would not do that with a woofer but over 100Hz it works great.
I will show you a link.
I found that resonances on the baffle get down by 20dB with the tennis balls.
This is a bit counter intuitive but with hard coupling ( spikes ) the resonances are not evacuated but are bounced back from the floor into the baffle and go again to the floor and come back again, at infinitum.
I would not do that with a woofer but over 100Hz it works great.
http://www.enviee.de/en/files/data sheet - enviee with tweeter cone.pdf
I do a slight EQ with 3 parts to tame the 3kHz range.
You see this components hanging out at the back.
That way i get a response of plus-minus 2dB from 150Hz to over 20kHz.
Sensitivity is 95dB with over 8 Ohm impedance-
The total speaker is phase coherent and has a near ideal step and impulse response.
A 1kHz square is no problem.
I do a slight EQ with 3 parts to tame the 3kHz range.
You see this components hanging out at the back.
That way i get a response of plus-minus 2dB from 150Hz to over 20kHz.
Sensitivity is 95dB with over 8 Ohm impedance-
The total speaker is phase coherent and has a near ideal step and impulse response.
A 1kHz square is no problem.
This are mini Kisos.The cabinets are made by Takamine, the famous guitar maker.
I just put the tennis ball under and it is stable. funny, isn´s it ?
Sitting on the back wall has a lot of advantages.
One is that you sit in the pressure zone and you have much less trouble with standing waves in the fundamental tone area.
Imaging is great too because of the Haas effect. I hear nothing from the back, unless it is something like a Q sound recording. Roger Waters " Amused to Death" is an example where i hear a carriage rolling in my back from left to right.
i have done a joint AES paper about that in 2000.
I just put the tennis ball under and it is stable. funny, isn´s it ?
Sitting on the back wall has a lot of advantages.
One is that you sit in the pressure zone and you have much less trouble with standing waves in the fundamental tone area.
Imaging is great too because of the Haas effect. I hear nothing from the back, unless it is something like a Q sound recording. Roger Waters " Amused to Death" is an example where i hear a carriage rolling in my back from left to right.
i have done a joint AES paper about that in 2000.
Here is another done done by a researcher that worked for me at Audio Physic.
http://www.essex.ac.uk/csee/researc.../C74 Localization experiments in 3D audio.pdf
The experiments where done in a dark room so the test persions had not much of an idea about the setup.
http://www.essex.ac.uk/csee/researc.../C74 Localization experiments in 3D audio.pdf
The experiments where done in a dark room so the test persions had not much of an idea about the setup.
Here is a popular version in plain english done by Allen Perkins :
http://www.essex.ac.uk/csee/researc.../C74 Localization experiments in 3D audio.pdf
I am Chief Designer at Canalis.
http://www.essex.ac.uk/csee/researc.../C74 Localization experiments in 3D audio.pdf
I am Chief Designer at Canalis.