Thanks, I could totally settle for 80hz, but if it's possible to get 60hz that allows me to crossover to my subs at 60hz and 80hz and has more options. Always good to have more options, right?
Does a compression driver need its own enclosure within the enclosure or is it able to just exist in the same enclosure as the woofer? It will help when I try to model the woofer and see what I need to do to get what I want with enclosure size and the vent tuning, etc.
Edit: Was just reading the compression driver doesn't even have to be in an enclosure, so I could even just mount it on top of a woofer cabinet via a baffle. I like that idea.
Very best,
Does a compression driver need its own enclosure within the enclosure or is it able to just exist in the same enclosure as the woofer? It will help when I try to model the woofer and see what I need to do to get what I want with enclosure size and the vent tuning, etc.
Edit: Was just reading the compression driver doesn't even have to be in an enclosure, so I could even just mount it on top of a woofer cabinet via a baffle. I like that idea.
Very best,
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Phew, so now I wonder.... which waveguide for the home theater context application?
Just modeled the Beta 12A II and I like what I'm seeing in a 3 ft^3 enclosure with a 50hz port tuning frequency. It only approaches xmax at around 75 watts and has 105db output from 60hz and up at 3 meters.
Very best,
Just modeled the Beta 12A II and I like what I'm seeing in a 3 ft^3 enclosure with a 50hz port tuning frequency. It only approaches xmax at around 75 watts and has 105db output from 60hz and up at 3 meters.
Very best,
Long historical build from Audiokarma late-great speaker builder, Zilch. Here is a summary page I just found with Google:
http://redspade-audio.blogspot.com/2010/11/introducing-econowave-speaker.html?m=1
Crossover PCBs are in Swap Meet:
https://www.diyaudio.com/community/threads/fs-zilchlab-econowave-crossover-pcbs.308422/
Search for Econowave here and find lots of posts.
http://redspade-audio.blogspot.com/2010/11/introducing-econowave-speaker.html?m=1
Crossover PCBs are in Swap Meet:
https://www.diyaudio.com/community/threads/fs-zilchlab-econowave-crossover-pcbs.308422/
Search for Econowave here and find lots of posts.
Read up on Michael's Condor and Osprey designs. They may be of interest.
https://ampslab.com/WP_SPK/spk_projects.htm
https://ampslab.com/WP_SPK/spk_projects.htm
Here’s a few Celestion kits that might fit your application needs - if you don’t like the floor wedge design you can change as you like as long as the baffle width and volume stay the same.
https://celestion.com/blog/build-this-compact-10-two-way-pa-speaker-design/
https://celestion.com/blog/build-this-compact-12-two-way-pa-cabinet-design/
https://celestion.com/blog/build-this-12-inch-coaxial-floor-monitor/
https://celestion.com/blog/build-this-compact-10-two-way-pa-speaker-design/
https://celestion.com/blog/build-this-compact-12-two-way-pa-cabinet-design/
https://celestion.com/blog/build-this-12-inch-coaxial-floor-monitor/
Ideally do a plan view of the completed room and find the max off axis point (deg) where it covers the entire listening position(s) (LP), yet doesn't bounce off any walls till a little behind everyone's ears and then have a diffuse sound field to damp them with heavy, weighted, drapes or a mishmash of items in a large bookcase (my fave), various frequency BW traps/whatever.
Don't forget floor/ceiling bounce either, not too mention any tables/whatever between the LP, sound wall or at least covered with heavy moving blankets/whatever, so ideally the mids/HF speakers will be up high angled down and if behind screen then the HF will be vertically aligned at 2/3 screen height where close up head scenes are located; otherwise on top of the screen or ideally W.E.'s Cinema Palace speaker system with specially designed separate top and bottom screen systems. A nightmare for them as it turned out, but with my limited knowledge of DSP capability probably solves all its intrinsic problems.
Also, if not pure CD, speakers are historically focused to cross over in front of the center LP or between the rows of seats or for large HT/small cinemas (numerous rows) it's at 2/3 LP distance.
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You can use that Dayton horn I linked here earlier. That can be mounted in the cabinet, but I think it would sound better if you made a separate enclosure for it. The plastic doesn't bode well for the woofer. In my opinion, when you build your 3 cubic foot cabinet for the Beta, just make an enclosure in the top for that horn and tweeter.
The coax option is a good one as well. I did this build using a Eminence Beta 10CX with an Eminence CT on the back. I don't recall which CT, this was years ago but I can find out. If I recall this was in 1.5 cubic feet. But, in my opinion the Beta 12 / Selenium D220 sounded better.
Indeed. The huge majority of HF drivers are sealed, and I would dare to go a step further and say that all current PA HF drivers are sealed. Use them in or on your boxes as you please, but good luck in finding the displacement volume of a horn flare from any manufacturer!
The only caveat is that very large horns are thought by some to be not sufficiently rigid to be used in large and very high power bass/mid enclosures. Not a problem in your scale of build.
Finding the displacement of a flare is simple. Put it in a bucket hold it down while you fill it with water up to some mark you know. Take out the flare and record the new water level. The delta and the diameter gives you the volume with standard geometric formulas 😉
A little basic geometry and math will get you close enough; it's simply not all that critical.
Hrm,
So it's better to put the horn in its own enclosure? Is it due to vibration or resonance with the woofer when sharing?
With the drivers mentioned here, primarily the compression driver, does voice sound natural? Instruments sound natural? Is there a particularly better compression driver with that in mind?
Very best,
So it's better to put the horn in its own enclosure? Is it due to vibration or resonance with the woofer when sharing?
With the drivers mentioned here, primarily the compression driver, does voice sound natural? Instruments sound natural? Is there a particularly better compression driver with that in mind?
Very best,
Interesting thanks! I like some of those; would definitely prefer to just make my own, but I enjoy some inspiration to build from!
Very best,