El Pipe-O - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 24th December 2002, 06:00 PM   #1
The one and only
Nelson Pass's Avatar
Join Date: Mar 2001
Default El Pipe-O

El Pipe-O is available now at www.passdiy.com

This is the first of a series of speaker projects we plan.

Merry Xmas.
  Reply With Quote
Old 24th December 2002, 06:07 PM   #2
paulb is offline paulb  Canada
diyAudio Member
Join Date: Jun 2001
Location: Calgary
Thank you, Nelson. Merry Christmas to you as well.
  Reply With Quote
Old 24th December 2002, 06:15 PM   #3
fcel is offline fcel  United States
diyAudio Member
Join Date: Sep 2001
Location: LA County
Did not expect to have this much to read over the holidays. Thanks NP and Merry Christmas to you and your family.
  Reply With Quote
Old 27th December 2002, 10:20 PM   #4
diyAudio Member
Jimmy154's Avatar
Join Date: Jun 2002
Location: NH, USA
Your second design looks better (after you blew those 2 focals). No folds or box to mess up the sound, like you where saying folds are bad. No wonder they sound better. Drunks also like to break my speakers, sometimes me also though.
Try ----> gtlucko (4T) gmale
  Reply With Quote
Old 28th December 2002, 01:25 AM   #5
diyAudio Member
FrankDIY's Avatar
Join Date: Mar 2001
Location: Quebec City
After a one week break on the forum, I am surprised to see that Mr Pass has give us a nice christmas gift. Very interesting and funny article. Thank you.

I can not resist to build something similar with my left over sub. Unfortunatelly I do not have a 14' ceiling (nor an X1000) but I really want to get my parties a little less boring so I will find a solution
Imagination is more important than knowledge. knowledge is limited, imagination encircles the world. Albert Einstein
FrankDIY's Audio Corner
  Reply With Quote
Old 8th January 2003, 09:09 PM   #6
yup is offline yup
diyAudio Member
Join Date: Oct 2002
Location: Atlanta, GA
Default wavelength

Can you effectively create a soundwave in a room which is smaller than the wavelength in question?

Just wondering....

  Reply With Quote
Old 8th January 2003, 11:01 PM   #7
diyAudio Moderator
pinkmouse's Avatar
Join Date: Apr 2002
Location: Rotherham, England
Can you effectively create a soundwave in a room which is smaller than the wavelength in question?

It can be confusing, because at school we are all taught that sound waves all look like nice wobbly sine waves and have a nice neat wavelength.

This is true, but only part of the answer. Sound waves are actually waves of compression and rarefraction transmitted though a medium, and as such can travel in any size space at all. As long as you have a volume where the individual particles/molecules have free movement, they will respond to any stimulation of any wavelength.

If it was not so, we would be unable to hear anything lower in frequency than the wavelength of the human ear canal, so assuming this is 2cm long, we would be unable to hear below 16.5KHz
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 9th January 2003, 06:30 AM   #8
diyAudio Member
Join Date: May 2002
Location: Switzerland
You don't need to have a soundWAVE in order to hear sound.
Our ears are basically pressure receivers (this is not 100% correct, but close enough) so it is sufficient to have soundPRESSURE.
Any form of mechanical wave that propagates through a medium is consisting of motion and force. In the case of a soundwave this is sound pressure and velocity.

I think almost everybody has experienced the following once in a while: Somebody turns a car window down a little while driving, turning the car into a large Helmhotz resonator. At a certain speed it's resonance may be excited, resulting in a very annoying subsonic noise. This is usually below 10 Hz, if not even below 5 Hz. You can imagine how "loud" this must actually be, given the facts that it is clearly below our ear's "lower cutoff frequency" and how loud it is perceived.
One interesing phenomenon is that the "culprit" rarely notices what he's done while the other passengers complain: The one closest to the window is mainly exposed to the VELOCITY of the oscillation while the others are exposed to the sound PRESSURE.


  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Old, old, PVC pipe design... Ronmeister Multi-Way 6 5th June 2009 11:55 PM
el pipe-o mantisory Subwoofers 5 2nd February 2009 04:51 PM
El Pipe-O's as Art? Scott Stansbury Pass Labs 2 14th October 2008 06:42 AM
El-Pipe-O (El-Pipe-Mino) ??? JDeV Multi-Way 21 26th October 2005 09:00 AM
El-Pipe-O ??? JDeV Multi-Way 0 6th October 2003 09:30 PM

New To Site? Need Help?

All times are GMT. The time now is 05:15 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2