SoundTraxx Tsunami Steam Users Guide - Manual (Page 39)

Tsunami Steam Sound User’s Guide Page 36
CV 128, Master Volume Control
Primary Audio Mixer CVs are as follows:
CV 129, Whistle mixer level
CV 130, Bell mixer level
CV 131, Exhaust mixer level
CV 132, Airpump mixer level
CV 133, Dynamo mixer level
CV 134, Blower mixer level
CV 135, Rod clank mixer level
CV 136, Steam hiss mixer level
Secondary Mixer CVs:
CV 137, Coupler Clank mixer level
CV 138, reserved
CV 139, Brake squeal mixer level
CV 140, Brake release mixer level
CV 141, Snifter valve mixer level
CV 142, Johnson Bar/Power reverse mixer level
CV 143, Pop Valve mixer level
CV 144, reserved
CV 145, Blower draft mixer level
CV 146, Water stop mixer level
CV 147, Injector mixer level
CV 148, Coal Shoveling mixer level
CV 149, Wrenches mixer level
CV 150, Oilcan mixer level
CV 151, Grease gun mixer level
CV 152, reserved
Using the Tsunami Equalizer
Tsunami’s built-in equalizer (or “EQ” as the audio guys like to call it) is
much like that you’d on your home stereo system. The equalizer allows you
to selectively cut and boost sound levels by +/-12dB over seven selected
frequency ranges and provides the “ultimate” tone control.
When most people hear about Tsunami’s equalizer, their first reaction is
“Great, now I can really crank up the bass!” What they don’t realize is that the
equalizer is also there to cut out the low frequencies as well.
Every speaker has a limit to the lowest frequency it can efficiently reproduce.
This is determined by a number of factors and in particular, the speaker’s
physical size. To reproduce a low frequency sound at high volume requires
the ability to move a lot of air, and hence a large diameter diaphragm.
On the other hand, the electromagnet at the base of the speaker cone will
react just fine to even the deepest bass. So if we try to drive a low frequency
sound signal thru a small speaker, the speaker still physically reacts to the
signal - we just don’t hear it very well because only a small amount of air is
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