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From: david@tekig.UUCP (David Hayes)
Newsgroups: net.audio
Subject: Re: Speaker building
Message-ID: <2520@tekig.UUCP>
Date: Fri, 22-Mar-85 13:30:47 EST
Article-I.D.: tekig.2520
Posted: Fri Mar 22 13:30:47 1985
Date-Received: Tue, 26-Mar-85 06:35:10 EST
References: <2300018@hp-pcd.UUCP> <90@vice.UUCP> <23457@lanl.ARPA>
Organization: Tektronix, Beaverton OR
Lines: 28



I have a question regarding the physics of reproducing sound,
regarding the Bose 901 speakers.

The speaker building info I have read speaks of some effort
to use speakers in their optimum frequency range, to increase
accuracy and reduce coloration.  This means you probably do 
not want to crossover your 15 inch woofer at 1500 Hz, like some
JBL's I've known.

In the 901s, I can see some advantage in the low end of having
9 smaller drivers for quick tight bass, but getting 5 inch drivers
to reproduce high frequencies, even getting the cone to move 
fast enough, explains why most high frequency drivers are 
physically smaller.  Then, on top of this, 8 of the drivers
point rearward to produce that "direct-reflected" full sound.
Does this mean if the orchestra all played towards the back
of the stage it would sound the same or better??

You may have guessed I do not own 901s, but they will play
extremely loud with a small amount of power, and their
size is not overbearing in the living room.

So how about it, can you equalize a 5 inch driver to give
you accurate response at high frequencies?

tektronix!tekig!david