○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
10
SL-620 SYSTEM INITIALIZING PROCEDURE
Choose the input level. Switch to LOW for instrument or microphone in (use with low
level inputs such as piezo mics); this provides a 30dB boost in the FBX's input gain struc-
ture. Switch to HIGH for insert or line in (use with high level output instruments and signal
processors).
Choose the output level. Switch to UNITY (for level in=level out) for use with
amplifiers that accept low level signals, such as guitar amps. In the UNITY setting the SL-
620 has a system gain of 1 (input=output level). Switch to LINE (for line level out) if your
signal needs preamping. In the LINE setting the gain is adjusted between 0 and +35dB via
the clip level adjust.
Follow these steps to obtain the maximum gain before feedback without changing the tonal
quality of your program. Set up only one SOLO at a time. The following instructions are for
using the SOLO on the mains. For use with monitors, substitute monitor send and master
monitor control for input channel level fader and mixer master output. Be sure to turn off the
mains when initializing the SOLO in your monitor system.
11. Place the speakers and microphones in the positions where they
will be used during the program. Avoid placing microphones
directly in front of speakers.
2. Set the mixer master output, all channel level faders, and the
monitors to minimum.
3. Turn on the SOLO.
4. Turn on the mixer, any signal processing equipment, and finally the
power amp. Press the SOLO's RESET button until the LEDs stop
flashing to clear out filters set previously.
5. If you are using a graphic EQ, adjust it only for the desired tonal
qualities. DO NOT NOTCH FOR FEEDBACK.
6. Be sure the SL-620 is in active mode. The "BY" LED will light green to
indicate the SL-620 is active and red if it is in bypass mode.
7. Turn the SOLO's clip level adjust to the two o'clock position.
8. Set the mixer master output to a nominal level, and lower all channel
levels to minimum.
9. Slowly raise the input channel level fader for the channel being set
until feedback occurs. The SL-620 should quickly remove the
feedback. The first FILTER LED will then blink to indicate a filter has
been set.
10. Keep raising the level slowly until all FIXED FILTERS and one dynamic filter is set. Any
uninitialized dynamic filters will be set later if feedback occurs during the program.
11. Now lower the channel level fader slightly so that the system is not on the verge of
another feedback point. This is the maximum volume level that the SL-620 will be able to
provide. Higher levels will cause uncontrollable feedback.
12. Finally, during sound check, adjust the CLIP LEVEL ADJUST so that the red CLIP LED
blinks intermittently, as you would adjust the recording level of a tape recorder. The unit
will clip and distort the program if the CLIP LEVEL ADJUST is set too high. If it is set too
low, the signal-to-noise ratio will degrade and the system may hiss. The best adjustment
occurs when the clip levels of the SOLO and the final power amp are matched (when the
clip level indicators blink at the same time).
SM-620 SYSTEM INITIALIZING PROCEDURE
Choose the output level. In the LO setting, the SM-620 has unity gain (input=output);
use LO for mic level. In the HI setting, gain is adjustable between -15dB and +20dB using the
clip level adjust; use HI for line level, or when you need to preamp the signal.
INSTRUCTIONS FOR OPERATION
