audiokinesis
Responses from audiokinesis
| The D'Appolito, MTM Configuration Joseph D'Appolito's original design had a few characteristics which have not made it into everything "MTM". He used an odd-order crossover (3rd order), which would have a lobe at 45 degrees above the tweeter axis in a normal tweeter-on-top two-w... | |
| Subwoofer speed is in the room, not the box @gdaddy1 wrote: "I couldn't find ONE room where anyone cut the main speakers with high crossed subs. Not one... "So the question is... If the high pass method makes the speaker sound so much better, wouldn't every speaker manufacturer use this ... | |
| Dd67000 crossover points? The JBL 4367 is a passive two-way (15" woofer and 1.4" throat horn) with a crossover at 700 Hz. Imo it’s a good idea to cover the range from about 1 kHz on up with a single driver, and crossing over a bit lower than that would be even better as l... | |
| Speakers for weird sized room..... Long wall or short wall? If it's the short wall, then dipoles come to mind. Dipoles can be placed right smack up against the sidewalls because they naturally have a nulls to their sides, but they do like to have a fair amount of distance behind ... | |
| Subwoofer speed is in the room, not the box @erik_squires wrote: "Installing 1 subwoofer correctly is a big deal and a lot more work than most audiophiles want to do. Tripling the number of speakers (from 2 to 6) for SWARM is also a big deal for many. Failing to do either well is what makes... | |
| Maggies and subwoofer integration @jjss49 wrote: "sure sub swarms of 3-4-5 subs work well, but in the op’s 11x13 room it might just be overkill..." Multiple subs might very well be impractical in this case because of space constraints, or cost, or for other reasons. But assuming ... | |
| Maggies and subwoofer integration My understanding is that the more distributed bass sources you have, the smoother the in-room bass. To a first approximation, a dipole can be thought of as two monopolar bass sources 180 degrees apart in phase, and separated by a path length. Thu... | |
| Subwoofer speed is in the room, not the box @erik_squires wrote: "The biggest problems I’ve heard/seen have been excessively large peaks in the subwoofer range. Sometimes those peaks put out 20x more power into a room than the rest of the subwoofer. Think about that!! Your 1000 W sub is pu... | |
| Class D Amplifier(s) for SWARM Subwoofer System @peter_s , it's not apparent to me where the lack of gain is coming from. With the JL Audio CR-1, do you have plenty of gain? The Dayton amp just has a single channel. The two sets of output terminals on the back are both connected in parallel ... | |
| Class D Amplifier(s) for SWARM Subwoofer System Hi @peter_s The Swarm with Dayton amps "not being able to keep up with" your 87 dB speakers puzzles me. I've use the Swarm with an Edgarhorn system, claimed efficiency 107 dB. The Dayton amps easily had enough gain. How are you getting... | |
| Legacy Focus plug rear ports? I make speakers that have multiple pluggable rear-facing ports, so imo plugging ports is a viable means of improving loudspeaker/room interaction in the bass region. Plugging some of the ports will lower the port tuning frequency, causing the low... | |
| Favorite Obscure Rock Song These are arguably trend more towards "progressive rock" than "mainstream rock". Apologies for not picking just one: "The Camera Eye", Rush "Moths", Jethro Tull "Astronomy", Blue Oyster Cult "11:59 PM October 30th", The Changelings "Rajah Kha... | |
| All speakers have a little EQ built in @akgwhiz wrote: "@audiokinesis can you expand on how low, or how much of the phase curve that’s low inductance, at low impedance is acceptable for most tube gear?" The interactions between the speakers’ impedance curves and the tube amps’ output... | |
| All speakers have a little EQ built in As one who occasionally dabbles in crossover design, often with one eye on the frequency response curve and the other on the impedance curve, I’d like to toss out an observation: Equalizing a frequency response anomaly without introducing an impe... | |
| Is Anyone Using Subwoofers the Same Size as Their Mids? I use four 10" diameter subs in my system. Depending on which speakers I'm using, my midwoofers range from 10" to 15" in diameter. In general, subwoofer drivers are optimized for subwoofer frequencies, and midbass drivers are optimized for midb... |