Liberty Instruments, Inc.
Enthusiast Loudspeaker and Audio design/test links:
To suggest or request inclusion of other links here (even to competitors' sites), please Contact Liberty Instruments
Inclusion of links here is for our guests' convenience: no recommendation is necessarily implied by our listing of any links!
The Audio Engineering List
Generally better signal/noise ration than "Bass List": subscribe at
(there are a number of lists accessable there- sign up for Audio Engineering List)
DIY Loudspeakers Mailing list
(a.k.a. "The Bass List")
is a by-subscription discussion group about loudspeakers. Subscribe at:
The LAUD users
ESL Information eXchange
THE ESL CIRCUT
a web page all about Electrostatic Loudspeakers. Lots of information and interesting forums.
THE AUDIO CIRCUT
like the ESL CIRCUIT, but about other speaker types as well as other high-end audio devices
ETF (Room Acoustics
TOMY SOFTWARE: SAT
Tomy makes a basic MLS measurement system that can use most Windows soundcards, and can measure loudspeaker frequency responses. Low cost, or free working demo. Worth checking out.
IJData: LspCAD and LspCAD PRO. High capability speaker and crossover modelling and simulation software
Audio Xpress magazine
and Old Colony Sound Labs (magazines, technical books,
CLIO Lite software):
Harris Tecnologies, creator of the BassBox Pro
speaker box design software, X-over Pro passive crossover design software
and HT Audio Typeface Collection:
Acoustic Technology International,
SOLEN (drivers and components)
Audiomatica S.R.L. (noble
competition:, CLIO measurement system)
MCM (drivers, parts, components,
LinearX (noble competition: LMS,
North Creek Music (speaker and audio
SpeakerDirect Inc. (speakers,
speaker parts, kits)
Audua (Speaker Workshop
a very capable combined loudspeaker measurement/simulation package).
components and supplies)
Also be sure to check very active Audio discussion board at:
DRA Laboratories (the
groundbreaking "MLSSA" system)
(the SMAART testing system)
GSW (Loudspeaker LAB
For Electrostatic Loudspeaker (ESL) Supplies and Info:
Barry Waldron, through the ESL Information eXchange, makes available some of the difficult to obtain items required to make an electrostatic speaker system. These include the following: Mylar to make diaphragms Audio matching transformers Power supply transformers for the bias supply. (For both domestic and overseas markets.) Parts kits are available for a crossover/equalizer and a conventional power supply as well as a switching power supply. Other products are planned..
We are pleased that some designs have been published in "The Audio Amateur" and "Speaker Builder" magazines and have been well received. -B. Waldron
To download a copy of PKWARE's PKZIP/PKUNZIP program (for unzipping compressed files),
use this link: