News!

21/08/2016

A new vintage power amplifier is available ON SALE.

 

23/06/2016

A new vintage preamplifier is available ON SALE.

 

14/02/2014

A new vintage amplifier is available ON SALE.

 

11/10/2013

Added a new folder, with restored vintage electronics ON SALE.

 

31/01/2013

Added, in SW folder, a workaround for Speaker Workshop under Seven.

 

4/08/2012

In the Projects folder there is a new article, about 2 power amplifiers building: The Hypex UcD180 and the My Ref.

 

6/02/2011

Added the search function inside the site.

 

02/12/2010

 Available in the Download folder an Excel file useful to calculate the Bin Rounded Frequency.

 

12/09/2010

 Updated the site graphics.

21/11/2009

 In the Projects folder there are two new articles: a DAC and a study on driver induced vibrations, both published on Audioxpress magazine.

 

7/12/2007

 The DCR speaker project is completed, with Auri article.

 

4/03/2007

 Updated the DATA CHECK Excel file: now it calculates the driver's Le at 1k and 10k Hz too.

 

23/10/2006

 Updated the SW NTF folder: it is now possible to measure the series network too.

 

01/01/2006

 Available in the Download folder the second version of Jay Butterman's SW manual, also downloadable at  http://www.audiodiycentral.com/

 

10/09/2005

 Activated the new HP address: http://www.claudionegro.com; made some adds in the SW Phase folder.

 

4/05/2005

 Added a new folder, SW Phase, where I illustrate how to overcame to possible phase problem with Speaker Workshop.

 

6/04/2005

 Added a new project, a Subwoofer for the Dipole Speaker, made measured and illustrated by Jose Sasian.

 

20/03/2005

 An update at all the site was performed. The new PDF of my tutorial is downloadable.

 

5/02/2005

 Added a new folder, SW NTF, where is described how to measure the Network Transfer Function using Speaker Workshop.

 

28/12/2004

 It's available in the download area a program written by Bruno Dalle Carbonare, that calculates T/S parameters starting from the free air impedance and the added mass or closed box one. The instructions are in the folder SW Impedance/Verify.

 

01/09/2004

 It's available the SW Manual, by Jay Butterman at this address:  http://www.audiodiycentral.com/

 

19/06/2004

Added a new project, a Dipole Speaker made, measured and illustrated by Jose Sasian.

 

5/02/2004

 Added a new folder, SW audio DB, that is a database of audio cards that works with SW .

 

19/01/2004

 Added a new generic calibration file for the ECM8000 mic. Added a new link.

 

23/12/2003

 Started the Projects folder, explaining the DCR and its Design.

 

22/11/2003

 Added Wallin's Jig II folder. 

 

21/11/2003

 The SW Acoustic Measure ended with the Not-Gated Far Field measurement. 

 

10/11/2003

 The Splice folder in the SW Acoustic Measure is ready. Added a new link.

 

6/11/2003

 After a long pause I am back! The Far-Field measurement is on the air, the gated folder is finished. Added a new file in the download section.

 

11/08/2003

 The Near Field measurement is ready. Added a new folder in SW Impedance, Speaker, that

shows how to measure the impedance of a driver mounted in a box.

 

8/08/2003

 The SW Acoustic Measures is started; the Cables section is ready.

 

20/07/2003

 The SW Impedance folder is complete.

 

19/07/2003
 Ended the SW Setup section

 

16/07/2003

 Added Cables and Volumes in the SW Setup folder.

 

9/07/2003
 Info, Links and Download areas are ready.

 

11/06/2003

The site just started.