audiokinesis

Responses from audiokinesis

What would your "perfect speaker" sound like.
"The highest rated loudspeaker is the least flawed, not the most virtuous." - Floyd Toole  
Flat frequency response
Back when I was an avid amateur speaker builder, I borrowed some test equipment from a technician so I could fine-tune a crossover design, my target being the "holy grail" of flat frequency response. As I got closer and closer to "flat", the sound... 
The mistake armchair speaker snobs make too often
Imo loudspeaker design is a competition of ideas, a vital part of which is the implementation of those ideas.  Given that most companies have finite resources to invest in product development, it only makes sense to develop and perhaps manufacture... 
Question: Sub with Fs 54, but response remains above 95dB down to 27: How can I best build
@hsbrock , I used Bassbox Pro by Harris Technologies.  I have a couple of other progams but they are no longer available.   
Question: Sub with Fs 54, but response remains above 95dB down to 27: How can I best build
@hsbrock , the modeled response that I described up-thead checks out.  It assumes 3 dB from boundary reinforcement at 40 Hz, and 6 dB from boundary reinforcement at 20 Hz, and a lowpass filter frequency no higher than 80 Hz.  It also assumes the T... 
Question: Sub with Fs 54, but response remains above 95dB down to 27: How can I best build
@hsbrock , I want to double-check something.  It might take me a couple of days.  Duke  
Question: Sub with Fs 54, but response remains above 95dB down to 27: How can I best build
@hsbrock I didn't use that 27 Hz figure; I just used the T/S parameters and a modelling program and estimated the boundary reinforcement from placement in or near a corner.   I don't claim my suggestion is perfect, but it should be "in the ballpa... 
Question: Sub with Fs 54, but response remains above 95dB down to 27: How can I best build
Thanks for posting the T/S parameters, @hsbrock . You might try 7 cubic feet net internal volume tuned to about 24 Hz. This plus some boundary reinforcement should get you down to 21 Hz ballpark in-room.  
Question: Sub with Fs 54, but response remains above 95dB down to 27: How can I best build
@hsbrock , do you have the other T/S parameters?   Qes, Qms, and Vas at a minimum?  Imo 54 Hz is an unusually high free-air resonance for a 15" home audio subwoofer.  Is this a car audio subwoofer?  Or a prosound driver?   
Question: Sub with Fs 54, but response remains above 95dB down to 27: How can I best build
"I've got a driver with free air Fs at 54 1w/1m, but free air response remains fairly even down to 27Hz above 95dB" This sounds unusual to me.  What woofer is this?   
Interesting Read From a Recording Engineer about EQ
IF you decide to use equalization, DO NOT equalize the in-room response of the left and right channels independently. You want the first-arrival sound to be identical from both channels for a variety of reasons, including image stability. Apply th... 
Your experience of moving to two subs
According to acoustics and psychoacoustics researcher Earl Geddes, the in-room bass smoothness increases in proportion to the number of independent bass sources. So two subs can theoretically be twice as smooth in-room as one sub; four subs can th... 
Wolcott
@m104amg, the New Orleans area technician has retired.  
Best Way four Bass Array
@hleeid wrote: "I am also interested in your satellite speaker. Where does it crossover?" The satellite speaker rolls off south of 60-70 Hz or so, depending on how close it is to the wall and how many ports are open. No protective highpass filte... 
Horn speakers with Imaging?
Wow, seeing this thread pop up is a trip down memory lane. Eighteen years ago I wrote the first reply of this thread, and then-unnamed prototype speaker I mentioned was the magnificent Summa by Earl Geddes. Earl ended up selling his designs direc...