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post #1 of 8 Old 02-02-2012, 04:17 PM - Thread Starter
 
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Whats the best free software?
What is everyone using?
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post #2 of 8 Old 02-02-2012, 04:41 PM
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Here's a great "getting started" site - http://techtalk.parts-express.com/sh...d.php?t=219617

Check the items under Essential Speaker Building Software. WinISD is pretty straightforward and easy to learn, although it might not handle everything.
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post #3 of 8 Old 02-02-2012, 09:45 PM
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I like UniBox and believe it's more accurate than WinISD.

WinISD allows you to compare systems with different drivers; UniBox only lets you compare the same driver in different kinds of boxes.

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post #4 of 8 Old 02-02-2012, 10:32 PM
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"I like UniBox and believe it's more accurate than WinISD."

except for inductance, don't both programs employ more or less the same equations for small signal response?

Listen. It's All Good.
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post #5 of 8 Old 02-03-2012, 10:08 AM
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Unibox...WinISD is unable to accurately model some drivers due to the inability to account for inductance. Simple as that.

On the other hand if you don't know what those parameters are then it won't really matter since you can't enter them into Unibox either.
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post #6 of 8 Old 02-03-2012, 12:34 PM
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Another, and long and oft repeated vote for Unibox. As well as working perfectly for a decade, it allows you to it allows to import and implement .frd files from the many other programs available at the FRD Consortium, which are also free.
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post #7 of 8 Old 02-03-2012, 01:49 PM
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Quote:
Originally Posted by LTD02 View Post

"I like UniBox and believe it's more accurate than WinISD."

except for inductance, don't both programs employ more or less the same equations for small signal response?

I don't know, but a professional designer I talked to says UniBox gives results much closer to predictions and measured results from Speak (IIRC).

Another odd thing is that in WinISD adding series resistance gives big increases in in low freq output, UniBox much less so.

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post #8 of 8 Old 02-03-2012, 05:44 PM
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I like both for different reasons. WinISD shows down to unity, it is very easy to add filters and eq, you can quickly compare designs and you can use more than 4 drivers.

Unibox allows for the better inductance model if you have that data available. You can also apply filters but it is a more convoluted process. I prefer its handling of passive radiators too.
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