XTD-33 I
NSTRUCTION
M
ANUAL
U
LTRA
★
S
TEREO
L
ABS
, I
NC
.
- 20 -
4) Adjust the output level of the Cinema Processor Left Output Level
Control until the Channel Signal Level LED on the XTD just turns
yellow (The Signal Level LEDs will be Green
±
0.5dB above or below
0dB, Yellow within
±
0.5dB of 0dB, and Red when above +23dB and
in danger of clipping)
5) Repeat for the Center and Right Channels.
Setting Output levels
Note: The XTD Volume Controls are factory-set fully counterclockwise (off
or zero) for shipping to prevent accidental damage to your speakers.
1) Set up a Sound Pressure Meter, set to “C” weighting, and a Spectrum
Analyzer in the audience area.
2) Turn on the Left Channel Low Frequency Amplifier. NOTE: The
amplifier volume should be set as it would normally be set. Some
facilities merely set the amplifier volume to maximum (or other
standard level) to facilitate amplifier swap out.
3) Adjust the XTD Left Channel Low Frequency Volume pot until the
Sound Pressure Level is approximately 80dB.
4) Turn off (or down all the way) the Low Frequency Amplifier.
5) If you are using a two-way system, skip the mid range adjustment and
leave the mid volume fully counter-clockwise.
6) Turn on the Left Channel Mid Frequency Amplifier.
7) Adjust the XTD Left Channel Mid Frequency Volume pot until the
Sound Pressure Level is approximately 80dB.
8) Turn off (or down all the way) the Mid Frequency Amplifier.
9) Turn on the Left Channel High Frequency Amplifier.
10) Adjust the XTD Left Channel High Frequency Volume pot until the
Sound Pressure Level is approximately 80dB.
11) Turn on the Low, Mid, and High Frequency Amplifiers.
12) Re-adjust Left Channel volumes for the best flat response.
13) Repeat Steps 2-12 for the Center and Right Channels.
14) EQ the room per the Cinema Processor or room equalizer instructions
(without further adjustment of the XTD).
15) Install the Access Panel Cover.
Emergency Bypass setup
- None. Refer to Installation section.
