Need help with 2 way fullrange project.

[natural sound]

Hello. I am working on my lastest project for a friend of mine. I have gotten a pair of 3 inch fullrange speakers. They go from 92hz to 32khz. I was wondering were I can put a cap to these drivers and use them as a mid/tweeter/super tweeter. Now I thought on adding a fullrange woofer to this project. I am looking at a 5 inch fullrange from fostex. It is the
ff125wk speakers. I will build the port box fostex has plans for this driver. Now for the smaller driver I plan on doing in open baffle on the top part. I would like to be able to play these 3 inch fullrange driver fairly loud. oo the drivers I am breaking in right now is the ff85wks. So please let me know what you think? I need all the help I can get.

P.s. is there a diffrence between a non-polarized capacitors and film and foil and metallized polypropylene caps? I have used t he dayton audio caps and they are really nice. I have also used the audio caps as well and the auricaps too. I know that is it 132uf for 125hz cap and it would be alot of money and I would like to use the most cheapest most natural way of making thses speakers sound real. Thanks again. jd

[jimbro]

Take a look at this - http://homepage.mac.com/tlinespeaker...TLs-280411.pdf. It uses el166s as the woofs and I think your ff85wks would plug right in. Reviewed very well by those who have built them (I'm not one).

[jimbro]

Page 3 on that link by the way.

[GM]

Originally Posted by natural sound

I would like to be able to play these 3 inch fullrange driver fairly loud. oo the drivers I am breaking in right now is the ff85wks. So please let me know what you think? I need all the help I can get.

P.s. is there a diffrence between a non-polarized capacitors and film and foil and metallized polypropylene caps?

Greets!

Indeed there is! The "Sound" of Capacitors

Well, its linear excursion at rated power limits it to a ~500 Hz XO at best, so if they were mine, I’d put them on a ~ 4.8” wide OB capped off at 1.0 kHz [or higher if I could see the driver move hardly at all at rated power].

GM

[chrisb]

If budget and physical space permit, and you still want to stick with Fostex for the woofer, I'd suggest either the 165 or 205 WK. As a mid/tweet in either separate enclosures or isolated within something like the MTM/MLTL that jimbro referenced, the FF85WK is silly good. Passive Series XO about 320-350Hz IIRC. If you've got or care to build multiple amp channels, PLLXO has lots of advantages.

[dewardh]

Why use a "full range" for the woofer at all? Just use a woofer . . . and cross it into the full range drivers you've got at maybe 300Hz. (which leaves plenty of overlap to use a simple low order crossover).