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Your search for 1/4λ found the following documents (of 61488 documents searched):
Displaying documents 11-20 of 53, with best matches first:

11. PiSpeakers Forum - Re: 9π midhorn, perhaps - Wayne Parham, August 08, 2007 at 10:40:07

 Yes, midhorns have to be fairly long. Their length should be at least 1/4λ of the cutoff frequency. The 9π midbass horn,...
URL: http://audioroundtable.com/PiSpeakers/messages/21613.html

12. PiSpeakers Forum - Re: Partitioning layer of insulation - Wayne Parham, March 16, 2006 at...

It's hard to say. In general, the thinner the layer, the less it does. Absorbent material is best spaced out 1/4λ from the...
URL: http://audioroundtable.com/PiSpeakers/messages/19326.html

13. PiSpeakers Forum - Re: 8 Pi Question ? - Wayne Parham, November 21, 2006 at 12:24:28

 You can make the port in a different shape, and positon doesn't matter as long as it doesn't cause standing wave pipe...
URL: http://audioroundtable.com/PiSpeakers/messages/20555.html

14. PiSpeakers Forum - Re: 7Pi slim - Wayne Parham, August 10, 2007 at 15:00:45

 Lots of changes there. I'm not sure I can give you much help other than general help. Here are a collection of thoughts,...
URL: http://audioroundtable.com/PiSpeakers/messages/21637.html

15. Pi Speaker Forum - Relevant info - Wayne Parham, August 09, 2003 at 16:04:13

 Relevant info The relevant issue is constructive summing in the listening area. If outdoors or in a large space, this is...
URL: http://audioroundtable.com/PiSpeakers/messages/11993.html

16. PiSpeakers Forum - Horns in groups, radiating into constrained space and room modes - Wayne...

 You can certainly make horns smaller that will be used in groups or boundary loaded. Making them smaller on this assumption...
URL: http://audioroundtable.com/PiSpeakers/messages/21650.html

17. PiSpeakers Forum - Re: Time Alignment - Wayne Parham, October 04, 2006 at 16:01:12

In my experience, use of the phrase "time alignment" has always been a marketing device. It isn't realistic to expect perfect...
URL: http://audioroundtable.com/PiSpeakers/messages/20385.html

18. ArraySpeakers Forum - Re: Combing and distance: an odd question - Wayne Parham, November 02,...

 Here's 2¢ worth of info about arrays with respect to interference, said simply. If you have a small number of sound sources...
URL: http://audioroundtable.com/ArraySpeakers/messages/1234.html

19. General Forum - Re: More on time alignment. Wayne? - Wayne Parham, August 31, 2006 at 09:21:32

Elliot is talking about keeping sound sources within 1/4λ, not zero phase offset. There's a big difference. As an example, the...
URL: http://audioroundtable.com/General/messages/3815.html

20. HighEfficiencySpeakers Forum - Re: Time Alignment - Horn/Compression & Woofer - Wayne...

If interaction of sound sources causes frequency anomalies - cancellation at certain frequencies - then you'll notice an...
URL: http://audioroundtable.com/HighEfficiencySpeakers/messages/2794.html

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