10/09/10-We're trying the blog again--
03/28/10-Added a brief set of sections
on the Linkwitz transform and why distortion testing is helpful.
03/28/10-It's getting closer to the DIY. See
my personal ramblings.
is a brief set of measurements on the feasibility of using an RS28F
on a Parts Express 8" waveguide. Looks promising for my RS225
is a zip file containing the FR and impedance curves for the
Peerless woofer and the Vifa tweeter used in the budget project
below. The link goes to a compressed file containing an FR graph, a
notes file, and FR and impedance for both drivers in the box.
02/06/10-You can find updates on Charlie's 2 way budget
01/09/10- Northern CA audio DIY. It's coming in
April. see www.ncdiyaudio.com
and the threads at the Parts Express board and HTguide. I'm going to
try to work with Charlie to have a really good turnout, with
multiple high quality speakers to audition. We'll post these as
folks sign up. I'll have my measurement setup so you can measure
your speakers, even if you don't want to demo them. We'll have some
nice door prizes, and some talks on various audio topics by some
well respected, but currently anonymous guests. Come one, come all.
I will have the ER18DXT, RS22528A and my old Mini, which I've
temporarily pulled out of storage for a low output unit for my wife.
I actually like it a lot, when you aren't uber cranking the SPL's.
I'll do my best to have the RST dipole up and running. I really want
to experiment with the RS28 soft dome and maybe, the DXT horn for
this. Of course, this means remeasuring. This is no easy task-it has
to be done outdoors, 10 feet or so up in the air...
01/09/10-Blog purged due to underemployed mischievous teenagers
11/1/09-ER18DXT design info in my blog.
7/22/09-ER18DXT second order two way preliminary design-see my
home blog page
3/15/09-Updates on 5" midwoofers-See the measurements page under
midrange group 3.
12/25/08-Updates on the RS22528A, additional tests the 7" Scan
revelator, Seas ER18, SB acoustics, as well as a test of the Tang
Band 3" midrange done.
The 7" woofer test can be found on my measurements page under
"Woofer test group 9."
The Tang Band TB75-1558SE can be found on the measurements page as
The RS22528A updates can be found at the beginning of the
Yes, the RS28a updates are here! Again, see the measurements page.
I'm trying the latest blog version again. We'll
give it a whirl. It's much easier to ruminate audio on the fly than
constantly feeding and watering this website. Tests and projects
will still be here, but speaker drivel has a new home...