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From: tet@uvaee.UUCP (Thomas E. Tkacik)
Newsgroups: net.audio
Subject: Speaker Sensitivity
Message-ID: <480@uvaee.UUCP>
Date: Sun, 27-Oct-85 19:18:48 EST
Article-I.D.: uvaee.480
Posted: Sun Oct 27 19:18:48 1985
Date-Received: Tue, 29-Oct-85 01:39:03 EST
Reply-To: tet@uvaee.UUCP (Thomas E. Tkacik)
Organization: EE Dept., U of Virginia, Charlottesville
Lines: 15
Summary: 

Does anyone know how the speaker configuration (vented, sealed, etc.)
affects a woofers sensitivity?  Acoustic suspension speakers are known
for being less efficient than bass reflex speakers :-)
Is this because IT IS an acoustic suspension speaker, or is it because
the drivers used are less efficient than drivers used in vented speakers?
Why would this be the case?

I have also seen a statement which helps a builder decide wether a particular
woffer will work better in a sealed or vented cabinet.
If fs/Qe (resonence frequency divided by electrical Q) > 100 use a vented
speaker.  If it is less than 100 use a sealed speaker.
Does anyone know how to decide if a driver will work in a TL or horn?

				Tom Tkacik
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