audiokinesis
Responses from audiokinesis
| Top notch speakers with their own sub Jax2, in my opinion fairly flat in-room response is the goal in the bass region, and above the bass region, I prefer a gently downward-sloping curve. If I have to choose between too much and too little bass energy, I'll choose too little because t... | |
| Top notch speakers with their own sub Equalizing peaks and nulls becomes more practical with a distributed multisub system. Before equalization the peaks are less peaky, the nulls are less nully, and there is less spatial variation (meaning that the response doesn't change as much fro... | |
| Opinions on Full-Range/single driver speakers Drew, one of my very best friends walked away from a career in a rock band to become a woodworker. My first commercial model was an "augmented fullrange"; that is, I used a Fostex fullrange driver in a sealed box with a built-in subwoofer to help ... | |
| Opinions on Full-Range/single driver speakers Thanks for clarifying; I mis-took the phrase "that is not the type of information I am seeking" to be referring to our favorite speakers. My favorite fullrange driver is the 8" Supravox field-coil unit. One feature is that you can fine-tune the ma... | |
| Top notch speakers with their own sub Thanks for the kind words, Jax2.The distributed multisub concept is something I learned from Earl Geddes. Here's a brief synopsis in his words:"The modal response of rooms at low frequencies causes large peaks and dips in the overall response of a... | |
| Opinions on Full-Range/single driver speakers "So your opinions are appreciated.""I would prefer if you did not advise me to purchase your favorite speaker as that is not the type of information I am seeking."So you want my opinion, but don't want to know what my favorite fullrange drivers ar... | |
| Passive sub for Magnepan 3.6r? Well Marty, the resolution of Greene's posted measurement is pretty low, showing 1/3 octave bands in one dB averaged increments. So I doubt that the actual curve stayed within +/- 4 dB... but that's still impressive in-room performance (which isn'... | |
| Passive sub for Magnepan 3.6r? Hi Marty,Well I can't discount your experience, especially since you were taking actual measurements, nor can I explain it. In an AES paper entitled "Dipole Loudspeaker Response in Listening Rooms", researcher James M. Kates compares the response ... | |
| Passive sub for Magnepan 3.6r? Hi Martykl,Thanks for your comments.A dipole can be modelled as two monopoles separated by a path length (the wrap-around distance) with the polarity reversed on one of them. In fact, that's what a dipole is! Take a Maggie and build it into a wall... | |
| Passive sub for Magnepan 3.6r? The discrepancy you heard between what the Maggies are doing in the bass region, and what the subs is doing, is primarily an acoustic room-interaction issue.A single monopole subwoofer will produce a peak-and-dip pattern at the listening position,... | |
| speakers with a "smooth" impedance curve Daedalus, what you describe is what I do in my speakers, instead of using an outboard impedance equalization filter. And I would estimate that designing for a smooth impedance curve as well as a smooth frequency response curve roughly quadruples t... | |
| speakers with a "smooth" impedance curve Hi Trelja,Yeah we finally disagree. It's about time, don't you think??The circuit I used is nothing you won't find in the Loudspeaker Design Cookbook, and it flattens an impedance peak somewhere around 2 kHz (the specifics are foggy now). I've use... | |
| speakers with a "smooth" impedance curve Having used a particularly load-sensitive tube amplifier in designing fairly high-efficiency loudspeakers, in my experience smoothing the impedance curve via additional crossover componentry does not have a downside. Electrically, the amplifier se... | |
| What matters most in speaker design? Up until the analog signal reaches the loudspeakers, it's a two-dimensional signal: Variations in intensity (voltage) over time. The loudspeaker has to deal with six dimensions: Variations in intensity (SPL) over time, across three dimensions of s... | |
| What matters most in speaker design? Ojgalli makes a very good point: "The first consideration is the design concept."I agree. Doing a thing well isn't enough; it must be the right thing.Duke |