35
Test Procedures
Required Equipment:
1.Cell phone with audio tones/music and
Bluetooth
®
2. XLR Plug and 1/4 inch phone jack
3. 1/8 inch audio cable
4. Audio Signal Generator
1. Power Switch and Front LED Test
1.1 Apply AC Power Switch.
1.2, Place the unit in the on position, verify the
front LED in the lower right corner is blue and the
power switch LED is blue.
2. Channel 1 and 2 Green Red LED Test
2.1 Connect a balanced XLR mic plug that is
connected to a signal generator into the channel
input.
2.2 Place the volume at Minimum. Treble, Bass at
Midrange, Tonematch o, Reverb o.
2.3 Apply a balanced 100mv, 80Hz, sinewave
signal from the signal generator.
2.4 Adjust the volume upward while observing the
LED change from Green to Red.
2.5 The Red LED should appear when the volume
is beyond midrange indicating clipping.
3. Audio Test, Channel 1 and 2
3.1 Perform procedure 2.1
3.2 Insert a 1/4 inch Phone Jack in to the line out.
3.3 Connect an oscilloscope or another S1 Pro to
the line out.
3.2 Apply a balanced 100 mv, 1KHz, +1Hz signal
to the input.
3.3 Rotate the volume clockwise to ensure audio
is present while monitoring line out for audio and
no distortion.
3.4 Adjust Treble and Reverb from minimum to
maximum and observe tone change.
4. Tonematch Switch Test Channel 1 and 2
4.1 Connect a Balanced XLR mic plug that is
connected to a signal generator into the channel
input.
4.2 Apply a 100mv, 1KHz, sinewave signal to
Channel 1.
4.3 Adjust volume to Mid/Center position.
4.4 Place the Tonematch switch to Guitar and
observe minimal change in volume and tone.
4.5 Place the Tonematch switch to Mic and
observe slight increase in volume and tone.
4.6 Repeat 4.1 thru 4.5 for Channel 2.
5. Frequency Sweep Test, Channel 1 and 2
5.1 Insert a 1/4 in Phone Jack that is connected to
a signal generator into the input.
5.2 Place the volume at Maximum. Treble, Bass at
Midrange, Tonematch o, Reverb o.
5.3 Apply a single-ended 100mv, 100Hz, sinewave
signal from the signal generator into Channel 1.
5.4 Sweep the generator from 20Hz to 20KHz.
There should be no extraneous noises such as
rubbing, scraping or ticking heard, if so, replace
driver and retest.
5.5 Repeat 5.1 to 5.4 for Channel 2.
6. Air Leak Test. Use Channel 1 or 2
6.1 Insert a 1/4 inch Phone Jack that is connected
to a signal generator into the input.
6.2 Adjust Volume to MAX, Bass, Treble at Mid/
Center. Tonematch o, Reverb o.
6.3 Apply a 70mv, 80Hz, sinewave to Channel 1.
6.4 Listen carefully around all gaskets and joints
for air leaks.
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