How is the effective piston area of a cone calculated? - diyAudio
 How is the effective piston area of a cone calculated?
 User Name Stay logged in? Password
 Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read Search

 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
 21st June 2004, 07:57 PM #1 diyAudio Member   Join Date: Jan 2004 Location: Toronto, ON, Canada How is the effective piston area of a cone calculated? It probably isn't pir^2... Anybody know?
 21st June 2004, 08:06 PM #2 diyAudio Moderator Emeritus     Join Date: Jan 2002 Location: Michigan Usually the diameter is measured as the actual cone diameter plus half of the surround on both sides. Then it's pi X (dia/2)^2 __________________ Rodd Yamashita
diyAudio Member

Join Date: Jun 2002
Location: USA, MN
Yes, it is:
Sd = pi * radius ^2

Sd = pi*(Dia/2)^2 = (pi*(Dia)^2)/4

As Rodd says, you should include half of the surround. The easiest way to measure diameter is to measure across the diameter on opposite sides of the surround. See picture.
Attached Images
 drawing2.gif (9.4 KB, 147 views)
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. —Aldous Huxley

 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 OffTrackbacks are Off Pingbacks are Off Refbacks are Off Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post newtothis Car Audio 1 11th June 2015 06:15 AM musgofasa Full Range 9 25th July 2008 08:16 PM mstar Multi-Way 14 22nd June 2006 05:50 AM Will Multi-Way 8 26th March 2006 06:45 AM

 New To Site? Need Help?

All times are GMT. The time now is 01:16 AM.

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