I appreciate YOU.
But the interest is just not there for me. I get off on reading your work and the work of others and putting together pieces of information that others don't think are even related. Neurological studies of the brain is more down my alley. And so I can think about the perceived nearfield of the auditory cortex's relationship to slightly out of the critical distance due to the Haas Effect, and acoustical and electrical engineers suddenly think I'm speaking Mandarin Chinese.
- Techtalk Speaker Building, Audio, Video Discussion Forum
This will take you to it. I'm currently cannibalizing the woofers for the new downstairs system. My wife would prefer something smaller for the woofers and I'm going to build a couple of 8 or 10 inchers in a lower cabinet for this system. I do have lots of other pictures but I don't know how to upload pictures here.
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Do you EQ your tweeters or FR'rs? What's the efficiency of each tweeter and each FR driver? You need more sub woofers, like an array going half way up your tower. IMO
I have a en equalizer, planned to use it, found it was un-necessary. The efficiency of each tweeter is not needed to be known since the total sensitive of the tweeter array is up near 98 db---what happens when you put 32 tweeters in a row. The same goes for the midranges. Yes they are full rangers but I only run them in this system from 165-2300, which is actually 4 octaves. The do really fine since the cross in 24db L-R, and each one only has to handle 1/17 of the total mid per side.
I don't need more subs. The 12 incher, is a dual voice coil model with a 15.2 mm xmax attached to a 375 watt/ch full range amplifier. It hits 29hz in the ported design. Since I only listen to music, and am not interested in duplicating gunshots or cannon, there is very very little music below 42hz. But with two of them I can rattle the walls, and make the sound scary. People have told me that it is scary.
I don't need more subs. The 12 incher, is a dual voice coil model with a 15.2 mm xmax attached to a 375 watt/ch full range amplifier. It hits 29hz in the ported design. Since I only listen to music, and am not interested in duplicating gunshots or cannon, there is very very little music below 42hz. But with two of them I can rattle the walls, and make the sound scary. People have told me that it is scary.
You're not that different from me 🙂. I'm puzzling to find my own way to learn what works for my brain's interpretation of these stereo waves.
It is a fun and rewarding journey! Each time getting closer to the performance with everything I learn. Lots of mistakes on the way too, how else are we going to discover anything!
Ah ok. That explains your desire... I prefer sci-fi and high speed/revving engine and wind sounds at high SPL for a short period of time (for performance testing, but I actually listen to everything), just to make it real, not to torture the neighbors. Ken Block's video of his race through LA is incredible when his stereo mic's picked up the wind sound along with his high RPM engine going close to 150MPH and then his brakes screeching. Also, 2nd is The Matrix movies, sub 20Hz in the final movie... Anyway, thanks for sharing man! Both of them I feel it in my feet, with nothing that even sounds like clipping.
EDIT: BTW each of my stereo pair subs I have wired for 2ohms per side since those audiosource amps can handle it, and the FR towers wired at 16ohms per side.
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Are you using passive crossovers or active? Using active crossovers, with a separate amp for each range in a 4-way makes it quite different---especially in the bass range since there is no clipping of the amp---PERIOD.
Active crossover. I'm using an old PioneerVSX-D812 to handle the 16 ohm arrays since it's a mass produced 'cheap'er amp that does 7.1 surround and does output a single subwoofer output. I wouldn't trust it for lower ohm load, but I do like it because it does handle the optical in/SPDIF. It's difficult to find a good amp with optical inputs... I may be searching for a new class AB amp soon for the arrays. Any recommendations?
I use that single subwoofer output to power 2 Audiosource Amp3's to power the stereo 8 8" subwoofers. There's a choice of crossover at 100Hz, 150Hz, or 200Hz. Currently I use 150Hz.
The Richard Clarke test has never given anyone the $10,000. This test is to prove that anyone can tell the difference when listening to music between any amplifier. As long as the amps are balanced in output, and not driven into clipping, no one has ever been able to tell any amp apart in any consistent way.
Since running a three or four way crossover, with a separate amp for the bass, mid and tweeters, I never drive into clipping.
So I just look for the best deal on ebay. My current downstairs system has a Linear Tech full range amp which puts out 375 RMS/ch for the woofers. They are rated only at 250, but it guarantees that no transient will cause clipping, and since I'm going to be equalizing up about 6db at 25hz in a sealed sonotube, I will need the available power. For the upper three ranges, I have a Rane 6 channel amp, with six separate power supplies for each amp.
I took the Linear tech from the upstairs system since I stole the woofers from that system. I will need a new woofer upgrade for them some time in the future, when I figure out what is wrong with them. They didn't travel well from Pennsylvania on the Moving van 650 miles north.
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