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View Full Version : New Open Baffle Project on the way


Fast1one
04-12-2009, 01:18 AM
Well, I have been doing lots of experiments with all kinds of drivers I had laying around. My favorite was 15 inch drivers and compression horns from a 1960s Magnavox in a simple baffle. Sounded phenomenal for what is was. Second favorite was my line arrays, which were a mistake (way to big).

So on that note, going to do a serious project this time around. Ill post some pictures when I'm done in a couple weeks. They consist of modified Fostex FF85KeN:

http://www.planet10-hifi.com/FF85KeN.html

Covering from 250hz-20khz. The midbass/subbass will be handled with four Pyle Pro PPA15 15 inch drivers in U-baffles. These have been used with great success over on diyaudio.com with very low extension for an open baffle system. Since this is on a budget, I will be using twin Audiosource Amp100s, actively powering the system.

Here are my first drafts. Key here is a simple build. if I had time, I would use multiply ply and add some more curvature. But alas, Im limited with time.

http://i28.photobucket.com/albums/c227/Fast1one/FF85KPPA15b-1.jpg
http://i28.photobucket.com/albums/c227/Fast1one/FF85KPPA15d.jpg
http://i28.photobucket.com/albums/c227/Fast1one/FF85KPPA15e.jpg

Im sure most of this is way some of your heads, but thats ok. Hope someone will appreciate it :) If anyone has any questions about dipoles, feel free to ask. And experiment!
JimJ
04-12-2009, 05:25 PM
Pyles are really better than the Eminence Alphas or Dayton cast frames? :D

Those Planet10 drivers definitely look interesting. He's done some amazing things with Fostexes...one of these days I'm going to build a Sachiko.
Fast1one
04-12-2009, 08:40 PM
Pyles are really better than the Eminence Alphas or Dayton cast frames? :D

Those Planet10 drivers definitely look interesting. He's done some amazing things with Fostexes...one of these days I'm going to build a Sachiko.
I chose the Pyles over the alphas because they have better extention (lower FS), higher motor strength which I prefer, and higher Xmax, plus lower price. The daytons generally don't have very good OB specs..

Im pretty exited about the FF85ks :)
ballstothewall
04-12-2009, 10:39 PM
Im pretty exited about the FF85ks :)


I have FF85k's in the dash of my car and I really like them. :)
DB-Audio
04-12-2009, 10:44 PM
looks like a sick build cant wait to see the finished box
Fast1one
04-12-2009, 11:35 PM
I have FF85k's in the dash of my car and I really like them. :)Dave at planet 10 brags about them all the time and I respect his opinion, both as a DIYer and a vendor.

Stoked to try something eNabled (or however thats spelled). Wondering what all the hype is about.


looks like a sick build cant wait to see the finished box

Hehe thanks. BTW, its not a box technically. Thats the whole point, removing coloration caused by enclosed alignments. Huge difference in midrange performance and the bass is very natural sounding.

The extreme curvature and small width of the top section has some issues. I revised the top section to remove a dip at 3khz and spike at 1.5khz. I'll still try to make it pretty though with (minimal) curvature :)

http://i28.photobucket.com/albums/c227/Fast1one/FF85KPPA15f.jpg