Extron electronics SSP 7.1 User Manual page 46

In the example below, the SPL readings for five channels are given in column 2.
Channel 4 has the lowest reading and is used as the zero reference point. The difference
between each speaker and the zero reference is calculated in column 3. This is the
adjustment that must be made to the output trim for that channel.
Channel SPL Reading
1 75
2 76
3 79
4 74
5 77
5. Use any of these methods to adjust the output trim for each speaker.
о
Grab and drag the slider bar to adjust output trim in 1 dB increments.
о
Click on one of the output trim slider controls to activate it and use the up and
down arrows beside the text box to adjust it in 1 dB increments.
о Click on one of the output trim slider controls to activate it and use the up and
down keys on the keyboard to adjust it in 1 dB increments.
о
Click on one of the output trim slider controls to activate it and use the page up and
page down keys on the keyboard to adjust it in 5 dB increments.
о
Highlight the value in the text box, type a number (omit the dB), and press Enter on
the keyboard.
The Reset button returns the output trim values for all speakers to the default value (0 dB).
Input and Output information bar
The Input and Output information bar is available from all GUI tabs and is described in detail
pages 28 and 29.
on
Output Trim Adjustment (dB)
-1
-2
-5
0 (zero reference channel)
-3
SSP 7.1 • Setup and Control Software 40