Shure FP33 - Manual (Page 9)

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7
MIXER SETUP
Prepare the FP33 stereo mixer for operation as follows:
1. For internal battery operation, lift the latch on the top
panel and open the battery compartment. Install two 9 V
alkaline batteries, making sure the polarity (+/–) is cor-
rect. Select the proper microphone powering for each in-
put via the slide switches. Close the compartment door
and secure the latch. For external power operation, plug
a 12 to 30 Vdc source into the External Power jack on
the right side panel of the FP33.
2. Connect the microphone, wireless receiver, or other
audio source to the desired Input Channel connector
on the left side panel.
Note:
When using a stereo microphone, such as the
Shure VP88, connect it to Channels 2 and 3. Use the
front panel LINK switch to make Inputs 2 and 3 a stereo
pair. In the LINK mode: Channel 2 = Left or Mid; Chan-
nel 3 = Right or Side.
3. Position each Mic/Line Input switch based on the level
of the incoming source.
4. Connect the camcorder, DAT machine, wireless trans-
mitter, or other equipment to the Left and Right Output
XLR connectors on the right side panel of the FP33.
5. Position each Mic/Line Output switch based on the in-
put level requirements of the equipment connected to
the FP33 outputs.
6. If a “tape return” or Monitor In feed into the FP33 is re-
quired, connect a 3.5 mm stereo male plug into the
Mon In connector on the right side panel. The signal
on this plug typically comes from the audio output of
whatever device is being fed by the FP33. See
NO TAG.
GROUND
GROUND
LEFT AUDIO
RIGHT AUDIO
Figure 7
RIGHT AUDIO
LEFT AUDIO
7. If an unbalanced output feed is desired, connect a
3.5 mm stereo male plug into the Tape Out connector
on the right side panel. This would typically feed a cas-
sette recorder or a DAT machine. Refer to NO TAG.
8. Plug headphones into the stereo 1/4 in. phone or
3.5 mm mini–phone jacks on the right side panel.
Note: The two headphone output connectors may be
used separately, simultaneously, or as auxiliary feeds
to other equipment.
9. To interconnect two mixers, plug the supplied Mix Bus
cable into the Mix Bus connectors of both mixers.
Note: When two FP33 or FP32A mixers are intercon-
nected via the Mix Bus, the Master Gain on either mixer
can be adjusted without affecting the other mixer’s out-
put level. This provides the equivalent of a six–input
stereo mixer with two separate Master output sections.
10. Set the Master Gain, Headphone Volume, and all In-
put Gains fully counterclockwise (off).
OPERATION
To operate the FP33 stereo mixer, proceed as follows:
1. Apply power to the mixer by sliding the On/Off switch
to the On position. The green Power On LED will flash
at a constant rate to indicate that the mixer is turned on.
2. Check the mixer power status by moving the front panel
Battery Check switch downward toward the battery icon.
The needle on the top VU meter will swing to the sloped
red BATT indication. If the needle falls below the red
BATT indication, the unit is not receiving adequate power
from the internal 9 V batteries or the external dc supply.
3. Move the front panel MON toggle switch to the center
position to route FP33 audio to the headphones. Set-
ting this switch to the left or right routes the Monitor In
audio to the headphones. The right position is mo-
mentary, for quickly checking the Monitor In audio.
4. Slide the LIM switch to the desired position: Up to turn
the output limiters on, Down to turn them off. Keep the
limiters on to protect against output overload.
5. Position the Low-Cut Filter switches for each Input: Up
for low-cut off, Down for low-cut on.
6. For an initial gain setting, rotate the Master Gain knob
to “0 dB” (2 o’clock). This provides unity gain for the
output stages. Note: the Master Gain can be adjusted
during mixer operation as input levels vary.
7. Activate the 1 kHz tone oscillator by sliding the switch
to the On (up) position. Use the tone to set the input
level control of the device following the FP33. Once
the input level of the following device is set, slide the
switch to the Off (down) position to turn off the tone.
Note: The tone oscillator of the FP33 is not used to set
the controls of the FP33. Those are set according to
the input signals coming into the FP33.
8. Rotate the Headphone Monitor Mode knob to the ST
(Stereo) position.
9. Put on headphones and carefully adjust the headphone
volume control.
WARNING: The headphone circuit is capable of
producing loud levels that can damage the user’s
hearing. Be sure the headphone volume setting is
low (fully CCW) before putting on the headphones.
10. Adjust the Input Gain and Pan controls based on the
incoming signal levels. The Input LEDs should flicker
red only on the loudest input peaks. After these set-
tings have been made, the Pan knobs can be pressed
flush to the front panel to avoid accidental movement.
11. Observe the output on the VU meters and adjust the
Master Gain to obtain the desired levels. Try to keep
the average levels around “0 VU.”
Note: To illuminate the VU meters, move the front
panel toggle switch up toward the light bulb symbol.
12. Press the Slate button to insert a momentary 400 Hz
Slate tone into the FP33 output for “take” identification
purposes. The FP33 mixer is now ready for use.
Note: If desired, vocally identify the “take” via the
Slate Mic while pressing the Slate button.
CONNECTING FP33 TRANSFORMER
BALANCED OUTPUTS TO TELEPHONE LINES
In the Line position, the Left and Right XLR outputs can be
used to drive dc-biased, “dialed up” telephone lines,