[Ricci]

Oh goody... I get to post first. :bigsmile:

These are the properties that I'd like to see on a line of HT drivers. I'm one of the people who is willing to pay a bit for some extra quality so budgetary concerns aren't really on my radar.

High displacement for the low bass in soundtracks and low distortion, with high SQ and good upper end bass extension for blending with the mains. Versatility so that they can be used in resonant and sealed designs, with an emphasis on small sealed box requirements. 30mm or more one way would be great and the more the better. It doesn't need to be as crazy as a XXX, but massive displacement headroom and clearances like that is a plus. Keep it linear and low distortion too. I'd like to see a linear motor system used (split coil maybe/ counter coil?) to that end. Quiet high excursion operation. Also low and well controlled inductance through whatever means necessary(shorting rings/ counter coil, whatever). Solid venting and cooling with high thermal power handling. High BL to keep the efficiency up and the box sizes reasonable. I know that using a linear motor automatically hurts you there but it can be done. I'd like to see it have a neo based motor too. Finally, keep it plain and classy looking. Offer it all the way up to a 21 or 22" like the one we already discussed.

That'll only be what? About $1500 per driver? :thud:

Abbreviated version...

1. Extreme linearity/High displacement
2. High BL
3. Well controlled inductance
4. High thermal power handling/venting/cooling
5. Low self noise at high excursion
6. Rugged
7. Reasonable box size requirements
8. Versatile
9. Classy looking

Perhaps you could do 60% of that in a more budget oriented line?

 

[Ricci]

I want better than an LMS for whatever it cost it takes to make that happen. :whistling: If something with 70% of that performance can be done at a decent cost that'd be cool too.

 

[Ricci]

Do it Scott! I'll buy them...and so will others... patents schmatents... they'll never know on something with this kind of volume if you don't advertise exactly what is going on in that part of the design.:cunning: . .Maybe...onder:

 

[Ricci]

Scott,
I was kidding about the patent thing. I'll have to look up that Alumapro design...


Robseyes,

Getting decent efficiency (low mms, High BL), really long linear throw and low inductance all in one is the ticket...usually tricky and expensive to do. Some of these fight against each other.

 

[Ricci]

:thankyou: I'm still really proud of that subwoofer. I'm kind of stalled out on wrapping up the sealed XXX's. I was going to go IB with them :T, but I decided that my place doesn't really lend itself to that. I'll get to it eventually. Busy, Busy.

 

[Ricci]

Lol... I definitely dont work that way. I give credit where it is due, or figure another solution. I had heard mention that there was a patent on the Alumapro M16 style basket for its construction. I havent found anything, but will absolutely exhaust my search ability and that of my patent attorneys before I sell a single thing. While my design is no where near the same as theirs, I do need to see what the patent covers should there actually be one.

I checked out that M16 driver and it looks pretty nice. I can't believe I've never even heard of that one. Looks like it's either DD or split coil, field serviceable, machined frame and all of that. I really couldn't find too much info on it. Just a few pictures. Woofersetc show it in stock though. I don't see how they could patent that basket construction method really. It's a nice frame but it's not like it's an invention or anything. It's just a machined frame instead of the usual methods. You obviously wouldn't copy it just build yours the same way.