QRDude - Diffuser Calculator - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 18 Old 10-05-09, 06:11 PM Thread Starter
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QRDude - Diffuser Calculator

QRDude is a calculator for designing QRD diffusers.

In standard mode, it provides similar functionality to existing calculators, although it adds a few features, such as support for inverse panels.

In advanced mode, it supports the design of panels that have had their wells shifted downwards, leading to savings in panel depth or lower design frequencies. Smart well width options can yield better bandwidth.

Supports metric and imperial units.

The software was developed during discussions on another forum, but since "The Shack" is a supporter of my site, it's release is being announced here.

Screenshot of advanced mode:


Available from the QRDude page

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Last edited by collo; 11-15-09 at 01:13 PM.
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post #2 of 18 Old 10-05-09, 11:47 PM
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re: QRDude - Diffuser Calculator

well done collo, you should be proud of yourself.

it IS the best qrd calculator available.
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post #3 of 18 Old 10-06-09, 03:38 AM Thread Starter
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re: QRDude - Diffuser Calculator

Thanks Terry,

couldn't have done it without the help of others (mentioned on the About form..)

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post #4 of 18 Old 10-08-09, 09:10 AM
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re: QRDude - Diffuser Calculator

Great job and have already spread the word!!!!!!

Glenn Kuras - GIK Acoustics

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post #5 of 18 Old 10-08-09, 03:56 PM Thread Starter
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re: QRDude - Diffuser Calculator

Thanks Glenn - I appreciate that.

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post #6 of 18 Old 11-07-09, 03:09 PM Thread Starter
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re: QRDude - Diffuser Calculator

Version 2 supports 2D QRD panels...


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post #7 of 18 Old 11-15-09, 04:28 AM Thread Starter
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re: QRDude - Diffuser Calculator

Version 2.03 released to fix a bug - the text report for 2D diffusers incorrectly stated the physical well depth for normal (non-inverse) panels.

Hopefully didn't spoil the plans of too many budding QRD builders...
Thanks to TerryJ for spotting that one!

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post #8 of 18 Old 11-22-09, 02:12 PM
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Re: QRDude - Diffuser Calculator

Great piece of software! Thank you :-)
Definitely very useful for me!
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post #9 of 18 Old 12-09-09, 04:32 AM
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Re: QRDude - Diffuser Calculator

Very nice tool.
Been using the mh-audio qrd calculator, but this is a lot better.
Thanks for sharing!
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post #10 of 18 Old 03-24-10, 03:25 PM
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Re: QRDude - Diffuser Calculator

Hello friends:
Im new at this forum, Ive read a lot of QRD diffusser ,
but Ive never found information about the a recomended
desing frequency,
Iwant to Know
whats is there any common frequency desing for multiporpose aplication.

Sorry about my english (I do sepak spanish)
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