Support for the DIY speaker builder

 
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dlr
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Version release v1.510 - Polar response improvements, UI changes and small bug fixes

Sat Aug 24, 2013 9:55 pm

This thread will be used primarily to announce new releases. It will be a bit redundant, the WinPCD section at my web site will always have full details.

The topic will be updated, new updates will be in additional posts. This will provide something of a history. Go to the last posts to see the most recent information.

Dave
 
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dlr
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Re: Version release notifications

Sat Aug 31, 2013 12:53 pm

A bug was reported for saving session files. While fixing that bug, I found another issue related to session files. That's now been fixed. The current version it v1.106 and should be downloaded with an uninstall/reinstall. I'm disappointed that these issues got by me, but they are fixed and have been tested. If you have any issues at all, please contact me or post in the feedback thread.

Dave
 
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dlr
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Version 1.2 available

Mon Nov 11, 2013 10:02 pm

I've just posted v1.200 for download. The major change is to the schematic window. You can now make changes to the schematic element values directly from the window. The main window will be updated as will all calculations and any related graphs.

All change details are available at the WinPCD web site.

Dave
 
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dlr
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Version 1.3 available

Sat May 10, 2014 10:16 am

This is a small update with a couple of changes made from requests and a couple of bug fixes. When two midranges or woofers are used, they can now be connected in parallel (default) or series. Each has its own set of measurement files already. Before this, series connected drivers would have to be connected and measured together which also meant that the spatial aspect (off-axis response) was not accurate. It now will be.

The other change is to the schematic overlay screen. The inductor and capacitor values now display to three decimal places. The tabbed sections on the main window are unchanged. The data was always maintained if entered to more than two decimal places, but it was rounded to two for display.

The bug fixes are described at the WinPCD site.

Dave
 
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dlr
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Version 1.301 available

Thu May 15, 2014 3:18 pm

One more set of changes is in this, primarily having to do with targets. The midrange targets are no longer fixed to be symmetric. Each leg is independent. Other changes are described at the WinPCD web site. Requests finally prompted me to do this. I put it off long enough.

dlr
 
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dlr
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Re: Version release notifications - v1.4 available

Sun Oct 12, 2014 5:19 pm

The changes are primarily in the user interface and the off-axis (polar) response section. See the thread for v1.4 below for details.
 
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dlr
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v1.402 - Bug fix release

Wed Nov 12, 2014 10:12 am

A user found a problem with the midrange lowpass. A third or fourth order electrical lowpass with non-zero in the fourth element (second capacitor) had an error from an editing typo. This appears to have been long-standing, so I highly recommend that you get the latest release if you may want a midrange bandpass of higher than second order electrical. To emphasize, this has to do with the electrical order (number of lowpass elements), not the acoustic order. The acoustic order is separate from the electrical order.

Dave
 
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dlr
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v1.403 - Auto Calcs added

Sun Jan 04, 2015 8:14 pm

The automatic calculations for the crossover sections (textbook values), the Before/After circuits and the circuits in parallel with the driver have all been added. Each of these requires the user to enter two or three values.

The crossover calcs are based on the type of crossover target selected (L-R, Butterworth or Bessel) and the electrical order. The electrical order selected must be valid for the crossover type. That is, Butterworth has 1-4, Bessel has 2-3 and L-R can only be 2 or 4. Keep in mind that these calculations are only for the electrical crossover, the user will then have to tweak it to attain the desired acoustic response.

The Before/After calcs are only for the LCR combination. This provides a resonant notch centered on the frequency selected by the user.

The calcs for the circuits in parallel with the driver are for the LCR or the Zobel (RC). The LCR is the same dialog as for the Before/After while the RC is an approximation based on the driver Re and Les.

Dave
 
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dlr
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Version release notification v1.410 Relative Acoustic Offset

Fri May 22, 2015 11:40 am

There is a new tab section in WinPCD to make it easier and, I hope, more intuitive for finding relative acoustic offset. This could already be done using the main design section, but that was not as intuitive and a bit clunky since it requires re-use of design section input. The new section is free-standing in that you can use it just for finding the offsets, then use those files and the offsets in other software with the caveat that you have to know how the z-axis is handled, whether positive values for offset place the center in front of or behind the baffle. WinPCD is, I believe, in sync with Jeff's PCD on this. Negative values place the position behind the baffle, more correctly, behind the origin (0,0,0).


Dave
 
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dlr
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Version v1.500 - Listening Window Average for front hemisphe

Wed Aug 26, 2015 7:33 pm

A new window has been added to calculate and display "listening window" averages. A more detailed description is available at the Versions page. I highly recommend that you read that before trying it. What you see will make more sense afterwards.

Dave

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