WinISD Pro Tutorial and Download. Through the database supplied to see if WinISD already has the driver you want entered. It will go over entering driver data. Driver parameters can be a pain to enter into the database. If you're having trouble getting it to accept parameters, follow this advice from one of the authors. Try entering just Qms, Re, Mms, Cms, Bl, Sd, hg, hc, Xlim (optional) and Pe.
The WinISD Pro application was designed to be a freeware speaker designer software. You will be able to design Closed, Vented, Bandpass boxes and passive radiators with this program. It also allows you to calculate few different types of filters. Is freeware speaker designing software for Windows 9x/NT environment.
You can design Closed, Vented and Bandpass boxes with this program. It also allows you to calculate few different types of filters. WinISD Pro a free speaker designer software that also allows you to calculate few different types of filters.
What’s new in WinISD Pro 0.50 Alpha 7: New: If project file is changed, program now asks if user wants to save the project. (Juha) Added voice coil thermal simulation fields. Now you can simulate effect of voice coil heating based on temperature rise that you specify. You can also specify resistance temperature coefficient of voice coil material. (Janne) Added several alignment options for closed and vented box. Program now suggests different alignments based on Qts value.
(Janne) Box alignment calculation now considers external resistance and reduction of Q as box has some absorption loss. Leak losses are not considered when calculating alignments. (Janne) Added passive radiator extra mass dragging for passive radiator. Dragging vertically changes passive radiator extra mass = tuning frequency is changed.
This requires that you enter some initial extra mass for passive radiator for this to work. (Janne) Added showing of air density value to “Environment tab”. (Janne) Added option to “cross-calculate” vents. User can now specify physical vent properties, and tuning frequency is calculated according that length. This can help when studying existing boxes.
No more guesswork. (Janne) When changing environment values, physical vent dimensions stay constant, and box tuning is recalculated.
This allows you to investigate temperature sensitivity of your design. (Janne) Added calculation of first port resonance frequency.
This shows frequency of first “organ pipe” resonance. Others are multiplies of this frequency. (Janne) Added option to change end correction factor.
(Janne) Added drawing of -3 dB line. (Janne) Added drawing of excursion limit. (Janne) Added option to configure rms, peak or peak-to-peak excursion and air velocities. (Janne) Added calculation of off-axis responses. User can now specify off-axis angle. (Janne) Added simulation of various types of prototype filters.
This is very nice feature, since now you can add various combinations of these filters, and see their combined impact on frequency response (magnitude and phase), cone excursion and group delay. You can also plot frequency response or group delay of equalizer/ chain. EQ/Filter transfer function magnitude plot has its own plot limits. (Janne, Juha) Added option relative cursor readings. Just doubleclick in plot window after setting to reference point to enable relative cursor readings. (Janne) Added option to change and specify voice coil connection mode, all VCs in parallel or in series.
(Janne) Added apparent power graph. This shows apparent power taken from the feeding amplifier, to assess amplifier loading. (Janne) Added parameter tracking to the driver editor.
Now driver editor tracks which parameters were entered and which were calculated. (Janne) Driver editor now internally recalculates all calculated parameters, when user enters new value for already entered parameter. This makes easy to correct entries. (Janne) Driver editor now checks all parameters by calculating through all relations between parameters. This assures that data is always correct.
(Janne) Changes: Moved “check internet for new version” under “Help/online” menu (Juha) Changed online support to point forums instead of email (Juha) Changed text “Frc” to “Fsc” for more consistency, like Qts = Qtc. (Janne) Calculation of models rewritten for better clarity. (Janne) Bugs fixed: ‘New project’-window now remembers last driver (Juha) Many cosmetic fixes. (Juha) Fixed toolbar colours if user was using customized colour scheme. (Juha) Fixed bug where certain editboxes were hard to edit by hand (program was overwriting what you just typed) (Juha).
Make sure you download the Pro variant. The current alpha version (0.50a7) calculates box volumes for ported and sealed enclosures using an easy to use interface and also calculates port lengths. Many graphs are available, including the three used in the section, ie Sound Pressure Level, Vent Air Velocity and Cone excursion, all relative to frequency. An extensive database of drivers is included and it is easy to add your own entries. This lets you compare different drivers before you go out and spend any money. It is surprising how the final box size and response varies with the driver chosen.
Bigger and dearer isn't always the best. Choose wisely, grasshopper! Screenshots The main interface. Whilst you can only have one graph window open at a time, you can have multiple projects open. This makes it easy to compare different designs. SPL changing with different values for Q The second step is to set the correct System input power.
WinISD takes whatever you set as the System Input Power and then adds the boost. The result of this process must not exceed the maximum power of your system.
This means that the System Input Power must be set lower than the maximum power by an amount equal to the boost. The following table shows how much to reduce the power for a given boost Boost in dB Divide maximum power by: 1 1.3 2 1.6 3 2.0 4 2.5 5 3.1 6 4.0 7 5.0 8 6.3 9 7.9 10 10.0 As an example, the is designed for 240w maximum power and has a boost of 6dB. For 6dB, we must divide the maximum power by 4, so we set the System Input Power to 60w.
Boosted vs Unboosted Signal Generator A signal generator is also included for testing speakers via your sound card and has a range of control options including selecting the frequency from the cursor position on the response graph. If using this function, be careful not to overdrive the output The generator allows you to produce a single frequency, or a sweep across a range.
For the single frequency option, you can manualy specify the frequency, or you can use the cursor to pick the frequency from on of the WinISD graphs. Unlike some other products, this one doesn't produce any clicks during sweep mode. There is also an output attenuator, allowing control of the signal level. Not Clipping Setting the Attenuation control to 6 was enough to restore a pristine sine wave. Your results may vary Now, whenever I use the tone generator, I use TrueRTA to make sure I'm not getting a clipped signal Flanged vs flared ports Some people get confused as to the difference between flanged ports and flared ports. A flanged end is an end that terminates in a flat panel, such as the wall of an enclosure.
A flared end is one that has an expansion section, typically one quarter of a circle in cross-section, to control port noise. WinISD can factor in flanged ends by applying an end-correction factor. The current version cannot handle flared ends. Here are some examples. Quick Tip: Entering driver parameters Driver parameters can be a pain to enter into the database. If you're having trouble getting it to accept parameters, follow this advice from one of the authors. Try entering just Qms, Re, Mms, Cms, Bl, Sd, hg, hc, Xlim (optional) and Pe.
Do not change any parameters the program calculates. That way the data is consistent.
You can of course add the dimensional parameters if you like If you can't get that to work, user Soho54 from AVSforum swears by the following. Enter the numbers in this order: Sd, Re, Le, Fs, Qes, Vas, Qms, xmax, and then Pe. That's it, now save Case Study used to prototype the illustrates the use of WinISD Additional WinISD resources. Steve Dart's excellent including entering driver parameters without errors. A few observations about the various graphs can be found in this. Janne Ahonen, one of the authors of WinISD, has published describing how WinISD compares with other software when it comes to calculating port lengths.
There are quite a few subwoofer driver files at. If you're having troubles finding T/S parameters, give a go!. If you have only some of the required T/S parameters, and can't find the missing ones anywhere, you may find it useful to try this. If you don't have windows, you can use an. It takes Vas, Qts and Fs, and gives you designs for sealed, ported, 4th and 6th order bandpasses.