I am currently thinking of working on field coil drivers in OB ,so i wanted to know from your experience with various drivers .
can you PM .
Thanks
Mekr
"My god, they're full of stars."
Breathtaking. I would love to listen. Congrats.
+1 on great looking and probably great sounding horns. They probably give +10dB boost but my experience is that a front horn will put some peaks and dips in an otherwise flat driver response - although not unpleasantly so. Here is a much smaller 3.5 in driver in a front horn and a spiral sealed TL for the back chamber.
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here is a discussion dealing with 8'' Sabas .. http://www.lencoheaven.net/forum/index.php?topic=8668.0 but i'm not sure the exact plans are there.
Those famous Rullit squares are more waveguided baffles that a real front horn.. and something like a 'fullrange horn' doesn't exist, these things are more like OBs with a little augmentation in lower mids when speakers ten do start to fall down. And in this case, straight, non-curved walls might work even better.
Thank you. There are some nice cardboard horns tried out there at the link alas no plans. He seems to approximate a horn curve by hand. He had the depth the mouth and throat sizes. He used freehand to draw the exponential curve as far as I understood.
I can get bendable plywood and try to hear an approximation of the Rullit's horn like OB
I really like how it looks. I just need plans to try it out with some 8" drivers. I may add woofers and tweeters too...
I can get bendable plywood and try to hear an approximation of the Rullit's horn like OB
I really like how it looks. I just need plans to try it out with some 8" drivers. I may add woofers and tweeters too...
I think about changing my nick ... sounds good "Buzz Killington"
You really want to hear my opinion ? Will not please you:
Eight inches diameter is too big for fullrange. To achieve a balanced
presence region seems fairly difficult with drivers > 4" .
If you have to displace air, let the subwork to someone with more
cone area or use more of the small ones.
I disagree completely, what the cone can't produce the whizzer cones will make up for.
These are my dream speakers. I'm sure they sound truly amazing. 8 inches is perfect for almost anything.
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if there were demand in large numbers, it seems like Eminence or perhaps MISCO could produce reasonably priced field-coil speakers. Of course they might share cone character with their permanent magnet brethren. Some years ago, Angela Instruments was selling 15" field coil new production Jensen - think for under $200 ea. (?)
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