a) Use of a PC with sound card and free / affordable / medium priced software
b) Simple devices like the Hifish Controller (for room acoustics measuring)
c)Affordable measuring systems with hardware (PC card, microphone) like e.g. Clio lite
d) Professional systems like Clio by Audiomatica, highly recommendable and the
lowest priced in this category Interesting for commercial use: Clio.
Most measuring attempts fail because:
1) The measuring system is not set-up properly (contact problems),
2) By mistake the room acoustics are measured, instead of the loudspeaker.
Are you an electronics student or you have plenty of time, know how to check
out a measuring system and understand the term Fourier transformation, then
we recommend solution a) using programmes like Audiot or Audua (available on
If you are unsure what or how much to measure or if you would rather like
to measure the room acoustics we suggest b). Should you want to develop loudspeakers
we recommend a), c) or d).
We have found a reasonably priced solution in section d) which we would like
to introduce to you: Clio by Audiomatica.
This measuring system is absolutely fascinating. Even professional loudspeaker
manufacturers think that way. To familiarise yourself with Clio we give you
Both Clio hardware measuring systems consist of a switch controller/measuring box:
Descriptions and handbooks as downloadable PDF files:
the Clio FW
Quality control for speakers production
and if you don't have a main amp the amplifier
A downloadable demo
version (V7) is also available
Please give us a call if you have questions or don't understand something.
On our tools page you'll find some examples Clio and its use:
more details to Clio Pocket
... affordable hardware based measuring systems are:
V2.3, German (5 Mbytes)
V2.3, English (5 Mbytes)
V2.31, German (0,15 Mbytes)
CD (27 Mbytes)
HiFish Audio Test-CD ACD Price
EUR 14,90 excl. VAT: € 12.52 / $ 14.15
Every home-made speaker may be optimised (not designed and developed). Even
the sound of purchased speakers, may be improved on, since this system is
capable of measuring the influence of bookshelves, wing chairs, damping carpets
Well, if this is not enough, there will be additions to the system that may
be integrated into your current hi-fi, enabling an analysis without dismantling
your speakers. A programmable crossover and a high-end pre-amp have been announced
The technology is not yet available for 64-bit systems.
Summary of review in Hobby HiFi 2/2001:
"A terrific gadget, this Audio Controller by HiFish: sound level measuring
is done in a jiffy and with the use of the test CD even extensive frequency
response tests and room acoustics analysis are performed without a hitch.
The accurate calibration of a home cinema system is as easy as the determination
of the ideal positioning of the speakers and establishing the hot spot. It's
a useful tool in setting-up Helmholtz absorbers (so-called bass traps) and
crossover networks. Short and sweet: a tool too good to miss in a hi-fi home.
A docking station is also available now. The station generates the test signals
itself, thus replacing the CD player. The station's frequency response is
16 Hz to 20 kHz and is able to generate single tones, sine sweeps and stepped
Price EUR 179,00 excl. VAT: € 150.42 / $ 169.97