audiokinesis
Responses from audiokinesis
| Rules for matching subwoofers to room size Eldartford, note that I specified "steep crossover". The typical 12 dB per octave lowpass filter is too shallow; you need a 24 dB per octave filter if the crossover point is going to be up around 80 Hz or so. I repeat that the ear cannot localize ... | |
| Rules for matching subwoofers to room size If a subwoofer has a steep crossover at 80 Hz or below you can place it anywhere in the room and not be able to hear its location. The reason is, at 80 Hz and below wavelengths are so long that the ear cannot tell what direction they are coming fr... | |
| Tips for designing listening room from scratch The author's name is "Earl Geddes". Sorry for the typo. | |
| Tips for designing listening room from scratch I recommend "Premium Home Theater: Design and Construction", by Earl Gedds.This is the best book I have found on the subject. Just ignore the video-centric chapters. The author is one of the world's foremost experts on small room acoustics and psy... | |
| Transmission line speakers I spent the better part of a decade building various DIY transmission lines (in SpeakerBuilder magazine issue #4 of 1986 you'll find one of my designs), and in my experience there's a tradeoff: Sufficient output from the end of the line to reinfor... | |
| Amp damping factor? High damping factors are often achieved through the use of large amounts of global negative feedback, which has negative sonic consequences that aren't obvious from the distortion specs (which themselves are virtually useless for evaluating sound ... | |
| Help with final choice of efficient speakers I'm not sure of the exact models that I've heard, but both Devore and Daedalus speakers have impressed me a great deal. I don't think there's a wrong choice between the two, but smooth and refined as the Devores are, my personal priorities still s... | |
| Top notch speakers with their own sub "PS Duke - is there pricing info on the Swarm and Planetarium systems? I didn't see any on your web site. Not that I'm thinking....." - MartyklYeah my website is a bit out of date. I have a forum on audiocircle.com that has more up to date info. T... | |
| 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'... |