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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: Re: How about a Klipsch corner horn? posted by Antonio Tucci on May 3, 2002 at 00:12:30:
The K-Horn bass unit requires a single 15 inch woofer (per cabnet). Klipsch uses a K-33 by Eminence I believe with a magnet in the 60-80? oz. range. A very large "pro" style woofer is not needed and not desired. Basically you can use any medium priced ($100-$200) 15 inch woofer (with the correct F, Q, and so on, I have the details writen down but not in my head), as it is a horn, the cone does not move nearly as much as a "normal" bass driver, the horn does the rest of the amplification (about 12dB, thus a 92dB driver becomes 104dB). The driver is not the issue, the cabnet is!, with over 100 plywood parts per cabnet, it is over 3 feet high and 2 feet wide and deep and wieghts in at about 200 pounds (each). To function propertly it MUST be placed (bolted better, extreamist set in cement!) in 2 corners perferably along a common wall (best in a large room of over 200sf along the short wall). If you are not up to the DIY work just buy a used one, however if you are, use Baltic Birch A/A Plywood for better results.I plan on using the "Oris 150" ($2500-$4000 depending on components 107dB/W/m, made in Europe, search on the web - Welbourne Labs - importer in Colorado) which is a DIY 22-inch diameter PVC spherical (think of a trombone's bell shape, made out of an auto bumper like material) horn kit that uses a Lowther 8" driver mounted in a special tube. A Oris 200 model (smaller) is also available. The Oris 150 goes down to about 180 Hz, below which it drops off like a stone as do all horns, below thier "mouth size". Lowther drivers have thier own cult following in Europe primarily for use in full range large "vertical-spiral" wooden horns (see web - Lowther - they even have Lowther Clubs!). The Oris can be used for all frequencies above 180 Hz (as intended), however the response becomes somewhat errantic (but not real bad) in the higher frequencies before dropping after 16K or so (I have a frequency response graph).
My plan is to later use a Pioneer TAD 4001? 1-inch compression driver into a homemade 5-inch diameter spherical horn tweeter, similar to the Avant Guarde's.
As for crossovers, my planned crossover frequencies are about 180 Hz and about 2000 Hz. The 180 Hz is as above, 2000 Hz is due to most horns only having about 3 octaves of "flat" response (thus octives: 200/400, 400/800, 800/1600 mid, and 2K/4K, 4K/8K, 8K/16K for tweeter). However I plan to "play" with the crossover points until I find a point I like best, then make a DIY quality crossover (active). If you wish Welbourne Labs can sell you a premade crossover at arround 160-200 Hz.
All of this is off the top of my head, so the numbers are approximate. If you are REAL serious, I will dig up the actual specs for you, from my boxes of audio info.
Hope this helps!
-Mark
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Follow Ups
- Driver details - haugenmarka@hotmail.com 05/3/0223:34:43 05/3/02 (2)
- Re: Driver details - Antonio Tucci 03:06:34 05/4/02 (1)
- K-Horn & Oris with Tubes - haugenmarka@hotmail.com 08:29:49 05/4/02 (0)
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