Source-audio Hot Hand Wah User Manual download pdf (Page 9)

Hot Hand Theory of Operation

While it is certainly possible to use Hot Hand without much technical back-

ground, a few words about how it works will allow you to quickly understand

how hand position and hand motion impact the sound.

The Hot Hand sensor senses acceleration. This means that both hand

position and hand motion will cause the Hot Hand to react and send signals

to the control box.

Hand Position

Since gravity is an acceleration, the Hot Hand is always measuring the pull

of the Earth’s gravitational force. To illustrate this, try strumming a chord

and pointing your hand with the sensor attached straight at the ground. By

bending your arm at the elbow, slowly move your forearm up until your hand

is pointing at the ceiling. You should hear the ﬁlter sweep from low to high

following the position of your arm. When the INVERT light is on, the opposite

will be true and the same gesture will sweep the ﬁlter from high to low. You

don’t need to move your entire arm to accomplish this. The same effect can

be achieved changing your hand position by bending at the wrist or by leaning

back and moving your hand and the guitar together. Hand position can range

from subtle movement to the not so subtle. If subtlety is not your thing, dra-

matic motions will open the door for showmanship as your hand shapes the

sounds from your guitar. We must point out that the Hot Hand will respond

differently in Outer Space!

When you are using hand position and larger hand or arm motions to control

the Hot Hand, we recommend turning the MOTION knob towards FLAIL. This

will prevent the Hot Hand from responding to small variations and sounding

too “jittery”.

Hand Motion

In addition to measuring gravitational force, the sensor also measures

movement. The more the hand moves, the more the signal will change. To

illustrate this, strum a chord and shake your hand quickly. You should hear

the ﬁlter sweep back and forth following your hand motion. Experiment with

moving your hand in different directions and at different speeds to ﬁnd the

method that works best for you. Use the MOTION knob to control how quickly

an effect will respond to your hand motion. In the most sensitive position

(PICK) the Hot Hand will detect even the slightest motion of the picking hand

and the result will sound like an auto-wah. In the STRUM position, the Hot

Hand will react more slowly. Try strumming some chords normally and listen

to how the Hot Hand reacts.

SAVE

PRESET

EFFECT MOTION

PRESET

ON/OFF

VOLUME SWELL

STRUM

FLAIL

PICK

BAND PASS

LOW PASS

AUTO WAH

CALIBRATE INVERT SENSOR

FREQUENCY

CLASSIC WAH

MULTI PEAK

MOTION CONTROLLED WAH FILTERS

ON/OFF

SELECT

Saving Presets

The PRESET feature of this product has been designed to be simple. This

product allows you to save 4 different conﬁgurations so that they may be eas-

ily recalled from the standing position. When you receive your product from

the factory, we have selected what we think are 4 useful conﬁgurations. You

may either keep these or replace any of them with your own settings. Should

you wish to return to the original factory presets, the conﬁgurations and other

ideas are located on our website, www.sourceaudio.net.

01 : Select and edit a preset

By stepping on the SELECT pedal you can select one of four user presets. Edit

a preset by changing values for FREQUENCY, EFFECT or MOTION. Any time that

you change the knob positions of a given preset, that LED will blink slowly to

indicate that the preset is being edited.

02 : Press and hold the SAVE button for two seconds

The LED will blink rapidly to signal that the saving process has begun. When

the light becomes solid, the save process is complete. Note that this process

will over-write any setting that we previously stored in this location.

ADVANCED USER NOTE

It is possible to save different calibration settings for each preset. The procedure is described in the

CALIBRATE section on page 10.

01 02

Hot Hand Theory of Operation | 1716 | Saving Presets

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Source-audio Hot Hand Wah User Manual Page 9

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