Shure VP88 User Manual page 2

Battery Power
If phantom power is not available, turn the Battery On/Off
control to the Batt On position. The adjacent LED will flash
momentarily, indicating that at least five hours of useful bat-
tery life remain. If the LED does not flash, the battery should
be replaced.
NOTE: If phantom power is applied with the control in the
Batt On position, there will be no battery drain.
Installing and Replacing the Battery
The VP88 uses a 6V cylindrical camera battery available
at most camera shops. Average battery life depends on the
type of battery: 70 hours is typical for silver oxide or lithium
batteries, 40 hours is typical for alkaline batteries. A list of
replacement batteries is presented in the following table.
SPEC. AGENCY/ SILVER
MANUFACTURER OXIDE
NEDA 1406SOP
IEC 4SR44
Duracell PX28
Eveready 544
Kodak KS28
Panasonic 4G13
Radio Shack –
Varta V28PX
To install or replace the battery, proceed as follows:
1. Disconnect the microphone cable and unscrew the VP88
lower handle.
2. Carefully slide the lower handle away from the grille, ex-
posing the battery compartment. If necessary, remove
the old battery.
3. Insert the new battery, observing the polarity marking in
the battery compartment.
4. Slide the lower handle back into position and tighten.
CONNECTIONS
Use the supplied Y–splitter cable to connect the VP88 to
two inputs of a mixer or console. The red connector, marked
"M" and "L", carries the Mid signal (in MS mode) or left sig-
nal (in stereo mode). The green connector, marked "S" and
"R", carries the Side signal (in MS mode) or right signal (in
stereo mode).
For stereo mode operation, connect the left (L) splitter
connector to the Channel 1 input and the right (R) splitter
connector to the Channel 2 input of the mixer or console.
Set the Channel 1 pan pot to full left and the Channel 2 pan
pot to full right.
MANGANESE
LITHIUM
ALKALINE
5005L 1414A
2CR1/3N 4LR44
PX28L –
L544 A544
K28L K28A
– 4LR44
– 23–469
V28PXL V4304PX
When the VP88 is set for stereo mode operation (H, M, or
L), the left and right signals should remain fully seperated
and kept at equal levels to maintain a balanced stereo effect.
NOTE: Use the Shure C110 Extension Cable (available as
an accesory) for extended cable runs between the VP88
and the mixer or console.
USING AN ADDITIONAL MICROPHONE
A second (mono) microphone can be used for interview-
ing or close miking. Turn its channel pan pot to the center
position and set its level independently.
MONITORING
Monitor sound in mono mode, as well as in stereo, to
check the balance for the mono listener. The mono output
will be equal to the cardioid Mid cartridge signal only, re-
gardless of the side level control setting, since the side sig-
nal is cancelled in mono.
PREVENTING WIND NOISE
The integral wind and pop filter provides protection against
moderate breath or wind noise. Use the supplied wind-
screen in high wind conditions, or with "problem" talkers.
LOW-FREQUENCY ROLLOFF
A low-frequency rolloff (12 dB per octave cut below 80
Hz) rolloff can be useful in reducing pickup of low-frequency
noise and vibration.
Set the upper control switch on the VP88 to either of the
two low-frequency rolloff positions, depending on whether
phantom or battery power is being used. See Figure 1.
PHANTOM BATT ON
(BATT OFF)
Rolloff with
Phantom Power
ROLLOFF SELECTION SWITCH
OUTPUT MODE
The lower control sets the VP88 to either MS Mode or to
one of three Stereo modes. (L, M, or H). See Figure 3.
MS
OUTPUT MODE SELECTION SWITCH
2
PHANTOM BATT ON
(BATT OFF)
Rolloff with
Battery On
FIGURE 1
SIDE
L
LEVEL
H M
O
E
S T E R
FIGURE 2