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In Reply to: How does a 10" direct radiator mid mate with a 1" compression driver? posted by Stephen K. on January 19, 2007 at 00:13:31:
I use a 10" woofer & 1" compression driver (on DDS waveguide) crossed passively at 1.7 kHz. Seems to work okay.That 18Sound elliptical waveguide is pretty small; you'll probably start to lose directional control below 2.5 kHz or so. Assuming your mid driver is still clean when crossed over that high, it should work.
Duke
Follow Ups:
Duke do you still offer that model? Looks like a very fair price.Is that walnut veneer? Any 07 CES pics?
Hi John,Thanks for asking!
Yup, I still offer that one. Bumped the price up to $4.2k because of more expensive capacitors in the compression driver's signal path (switched from Solens to Sonicaps).
The front is solid 3/4" walnut backed by 3/4" Baltic birch, and the other panels are 3/4" veneered MDF. Most of the other panels use constrained layer damping to reduce panel vibration.
My room at T.H.E. Show was actually a two-room mini-suite, so I had two systems going at once (playing the same music 98% of the time). I swapped speakers back and forth between the rooms, so which speakers are in which room depends on which day the photographer came by. So far a few pics of my room have appeared:
http://positive-feedback.com/Issue29/ces071.htm (scroll down about 4/5 of the way; nice blurb.)
http://positive-feedback.com/Issue29/ces072.htm (scroll down about 3/4 of the way - this is a floorstanding version of the previously stand-mounted Stormbringer. Larger woofer than the Jazz Modules, but a bit less expensive.)
I probably shouldn't count my chickens before they hatch, but I might get a mention in StereoTimes.com's coverage of T.H.E. Show when it comes out.
In the link below, the last photo is a close-up of one of four small subwoofers I had scattered around the room, driven by a single plate amp. I will probably demo a satellite-subwoofer system using the four-box subwoofer setup at a future show.
Duke
Nice work Duke think you will do well but as you know doing well doesnt mean much in audio sales;) Love the walnut finish, noticed DDS wave guides in a few CES systems. The multi sub idea is interesting bet folks might like large bass without taking up so much room, (like my giant bass horns do still the mighty pressure they produce is something you need to hear feel to understand).Your the 1st I know who have thought of multiple subs off one amp for commercial sale.You might be on to something with so much HT sales going on you can cover both audio and HT with one product. Bet folks could start with 2 subs and add more as needed....$$$. Heres an idea for you how about a in wall DDS with a 10in? Might be more affordable to build bet you could charge the same as floorstanders would think the wave guide or horn would do very well as a in wall.
hey Duke - looks like 'someone could lighten those pix with $10 software?
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