Re: [PSUBS-MAILIST] I NEED A SPEAKER!

[Gregc02@ibm.net]

Pat,

This post reminds me that I have to put something similar together in the next month; I need a 
speaker to put some "sonar" sounds in the water on the Torsk next month.

My plan "A" is to put a cheap Radio Shack speaker horn into a plastic jar and fill it with mineral 
oil or something similar and seal the top on and just let the plastic flex a little for compensation. 
The oil should transmit the sound real well into the water and with the sealed horn all the sound 
will come out of the front of the horn (with a cone type speaker, the sound off of the front and 
back tend to cancel out). If the horn stands up to this for awhile, I'll go to the next step and use 
the 100 watt University horn I've been saving for this and really put out a ping (or voice).

I'll let you know how it works.

Greg
ex STS 3 (SS)

From:           	"Captain Nemo" <vulcania@interpac.net>
To:             	"Personal \(Discussion\) Submersibles" <Personal_Submersibles@psubs.org>
Subject:        	[PSUBS-MAILIST] I NEED A SPEAKER!
Date sent:      	Wed, 29 Nov 2000 09:40:13 -0000
Send reply to:  	personal_submersibles@psubs.org

> Does anybody know where I can get a submersible 12 Volt underwater loudspeaker?  I want to hide a public address system under the aft-deck of the NAUTILUS, so I can talk to my support crew more easily (yelling is a drag, and the spectators don't understand).  It would also be cool to blast out 
sound effects like that "turbine whine" the Disney NAUTILUS made in LEAGUES, and such.
> 
> Gotta be fairly small (about 8 inch diameter at the horn mouth, maybe?) fully waterproof, and if I didn't have to take a second mortgage out on the house, that would be cool, too!
> 
> Or, and ideas on how to make one?
> 
> VBR
> 
> Pat
>