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Your search for 1/4λ, 1/4 wavelength found the following documents (of 61488 documents searched):
Displaying documents 1-10 of 87, with best matches first:

1. PiSpeakers Forum - Reflex cabinets, transmission lines and basshorns - Wayne Parham, November...

 Transmission lines are similar to vented speakers in that they employ a resonator to load the woofer at a low frequency....
URL: http://audioroundtable.com/PiSpeakers/messages/20582.html

2. HighEfficiencySpeakers Forum - Re: Need help with room placement - Wayne Parham, June 08, 2006...

Watch out for nulls though. When a boundary is 1/4λ away, a null forms at that frequency. Two feet is 1/4λ of 140Hz, three...
URL: http://audioroundtable.com/HighEfficiencySpeakers/messages/3073.html

3. General Forum - Searches that include special characters - Wayne Parham, October 12, 2007 at...

 Searches that include characters like "Ω" are supported. However, the search engine does not automatically convert "ohm" to...
URL: http://audioroundtable.com/General/messages/4818.html

4. PiSpeakers Forum - π cornerhorn behavior - Wayne Parham, June 26, 2008 at 19:18:49

 The π cornerhorn reaches pretty high because of its simple design. It provides useable output over the woofer's entire...
URL: http://audioroundtable.com/PiSpeakers/messages/22584.html

5. PiSpeakers Forum - Re: Xover thoughts... - Wayne Parham, January 12, 2007 at 00:45:45

I would use a 2.5-way crossover, measure it and see how it goes. I can't see any reason it wouldn't provide everything you...
URL: http://audioroundtable.com/PiSpeakers/messages/20799.html

6. PiSpeakers Forum - Re: How many subs are enough? - Wayne Parham, December 03, 2008 at 19:14:12

 Outdoors, I would prefer the subs packed close together, ideally within 1/4λ from each other and from the mains. The idea...
URL: http://audioroundtable.com/PiSpeakers/messages/23261.html

7. ArraySpeakers Forum - Re: Symetrical Array (and crossover issues...) Griffen? Craig? - Duke,...

Rather than me telling you where I think a crossover ought or ought not to be, I'll show you my source. Click in the link...
URL: http://audioroundtable.com/ArraySpeakers/messages/1954.html

8. PiSpeakers Forum - Re: Can you guess horn cut-off by dimension only? - Wayne Parham, February...

 1/3λ is a fairly safe cutoff frequency estimate. 1/4λ would be a drop dead value, one that I would not expect any acoustic...
URL: http://audioroundtable.com/PiSpeakers/messages/23593.html

9. PiSpeakers Forum - Re: 2Pi Towers - Wayne Parham, January 22, 2005 at 19:18:27

Transmission lines use standing waves as their primary tuning method. They usually have a pipe that is 1/4 wavelength of the...
URL: http://audioroundtable.com/PiSpeakers/messages/16250.html

10. PiSpeakers Forum - Re: 2Pi Towers - Wayne Parham, January 22, 2005 at 19:18:27

Transmission lines use standing waves as their primary tuning method. They usually have a pipe that is 1/4 wavelength of the...
URL: http://audioroundtable.com/PiSpeakers/messages/16250.html

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