Model Forum / Radio Controlled / Water Models / September 2003

Hello Crazywolf,
   I have built many boats for my customers and have had good
luck with the RAM line of sound modules. Occasionally I use the
Robbe sound boards ($52 list).  Most hobby shops will give you a
discount on the RAM units if you are a regular customer. I run a
hobby shop and usually give 20% off their $49 list price.
   There are dozens of schematics available on the web if you are
the build it yourself modeler. The real secret to any sound system
is the amplifier and the speaker. I use an 18 watt BTL unit that only
costs about $10 in kit form from MPJA on the web. The speakers
are rated anywhere from 25 to 40 watts, have a rubber or cloth
surround, and a massive magnet. I build an acoustic chamber that
resonates the low frequencies and glue it to the speaker. You can
usually get nice small 4 ohm speakers for free from TV repair shops,
but will have to dig for good ones that have the rubber or cloth.
   I tailor the sound with the controls on the RAM PC board, and
usually add non-polarized capacitors and low pass filters to the
speaker to get a deep sounding rumble to the sound.
Hope this gives you a few ideas, good luck!

"CrazyWolf" <crazyhorse@somewhere.com

news:zdiab.494145$4UE.414926@news01.bloor.is.net.cable.rogers.com...

A company by the name of "Ram" makes some
I believe "Robbe" make some also.

Some of the best ones I have heard come fro the model train industry.
However they run about $150 U.S. and up.
There are a couple of companies that make desiel sound chips for
trains, but the only one I can think of off hand is "Pheonix".

It is also a good Idea to listen to some of the different engines
available as not all desiel engines sound the same.

I pulled a sound bit off of the cd for "microsoft train simulator".
However I haven't decided on how to play it in the boat just yet.

--
Umi_Ryuzuki

Nyow!
/
=^o^=
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I have previously used a 30second voice recorder and recorded the
sound bytes I wanted off the web( ships horn ).The one I prevoiously
used seems to be not made any more so I have bought in a couple of 20
sec voice recorders and had them made up.
for the ships engine I have had an electronic diesel sound generator
made up on which I can alter the volume and the engine speed with a
potentiometer.
With the speed on full Its sounds like a genuine diesel engine
hammering along and for my container ship I just have the revs
constant as for a variable pitch prop.
If you need a little more infom Email me
Malcolm  NZ
Regards, Malcolm

go to the Hobby Lobby website - and look for the Graupner Navy Sound Module...
it is the best one you can get