8 – ALIGNMENT with ULTRA STEREO JSX1000
Equipment required: Pink Noise Card, Real Time Analyser (RTA)
1. SET UP REAL TIME ANALYSER
Set up a Real Time Analyser and position the
microphones in the auditorium.
2. PRE-SET SP23 OUTPUT LEVELS
Turn all four output trimmers on the SP23
anticlockwise until you feel a slight click.
3. SWITCH SP23 TO BYPASS
Switch the SP23 to bypass mode (Red Bypass
button IN).
4. SET THE JSX-1000 SURROUND
EQUALISERS TO FLAT
Remove the surround equaliser card (if fitted)
and set all controls to the mid position. This
should be done as accurately as possible.
5. INSTALL PINK NOISE CARD
Remove the Synthesiser card (if fitted) from
the sound processor and install the pink noise
generator in it’s place.
6. SELECT “SYN/AUX” FORMAT
Select “Syn/Aux” format on sound processor to
output pink noise to the auditorium.
7. SET PROCESSOR VOLUME TO “7”
Set the sound processor volume control to
level “7” and keep it there for all subsequent
adjustments.
8. CHECK SPL LEVELS ON ALL
`CHANNELS
Check that the SPL levels for all of the
channels are correct (85dBC per channel). If
not, adjust the output level trimmers on the
equaliser modules for a level of 85dBC from
each channel.
9.
SELECT “DIGITAL/EXT” FORMAT
Select the sound processor to DIGITAL/EXT
format. Check that the red “DECODE-ON”
LED is illuminated on the SP23
10. REMOVE AUTOMATION
CONNECTION
Disconnect the D25 automation cable from the
SP23. (This is to prevent the sound processor
from switching the SP23 back to Optical
mode)
11. SELECT “SYN/AUX” FORMAT
Select the sound processor to Syn/Aux format
(to send pink noise to the outputs).
To Next Page
Loading...