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3. Input High Red LED: Should flicker only on loud speech
peaks.
4. Flat (—)/Low–Cut (/ ) Slide Switches: Provide low–frequen-
cy rolloff to reduce undesirable low–frequency signals such as
wind noise.
5. MASTER Rotary Control: Determines the level of the com-
bined input signals at Mic/Line, Tape and Phones outputs.
PULL FOR 1 kHz TONE position activates 1 kHz tone oscilla-
tor (tone level is determined by Master control setting). Oscilla-
tor signal appears at all outputs. When oscillator is not in use,
knob should be pushed in.
6. PEAK/VU Output Level Meter: Meter function is selected by
adjacent PEAK/VU slide switch. In PEAK switch position, me-
ter indicates peak signal levels. In VU position, it indicates av-
erage signal levels, simulating a true VU meter.
7. BATTERY TEST Momentary Slide Switch: Operates in con-
junction with PEAK/VU Meter to indicate battery condi-
tion.With POWER switch on and switch in momentary–on po-
sition, new set of batteries lights all green LEDs. Number of
green LEDs lit indicates approximate battery life remaining
when alkaline batteries are used. NOTE: POWER LED begins
flashing when total battery supply voltage drops to 10 Vdc (one
green LED lit).
8. MANUAL/AUTO Slide Switch: Selects manual or automatic
microphone operating mode. In MANUAL position, unit oper-
ates as a conventional microphone mixer. In AUTO position,
unused microphones automatically turn off.
9. LIMITER IN Slide Switch: Activates fast–acting, peak–res-
ponding limiter circuit to cut overload distortion during loud
program intervals without affecting normal program levels.
The red limiter LED indicates limiting action.
10. PHONES
1
/
4
–inch and 3.5 mm Phone Jacks: Permit moni-
toring mixer output through most stereo or mono headphones.
PULL FOR MONITOR switch applies signal from rear–panel
MON IN 3.5 mm phone jack to headphones amplifier. When
switch is activated, mixer output signal does not appear in
headphones output. PHONES rotary control determines
headphone level in either case.
11. POWER Slide Switch: Applies ac or battery power to mixer
circuitry. Adjacent green LED indicates power–on status and,
in battery operation, flashes when total battery voltage drops
to 10 Vdc..
12. 230 VAC, 50/60 Hz 8W 3–Pin Power Connector: For con-
nection to 230 Vac, 50/60 Hz power outlets.
13. OUTPUT 3–Pin Male XLR Connectors: For connection to
one or two amplifiers, recorders or other mixers. Output signal
levels are individually switchable to Line level or low–impe-
dance Mic level by adjacent individual MIC/LINE slide
switches. Both jacks provide the same signal information but
are electrically isolated.
14. TAPE OUT 3.5 mm Phone Jack: Provides output signal to
feed unbalanced aux–level inputs of most tape recorders and
amplifiers.
15. LINK IN/OUT 8–Pin miniature DIN Jacks: Using link
cables, these jacks permit virtually unlimited number of
FP410E mixers to be stacked to achieve additional input ca-
pacity. Jacks carry audio signals, MaxBus and Last Mic Lock–
On information.
16. MON IN 3.5 mm Phone Jack: Sends external Aux or Line–
level source to headphones amplifier without interrupting other
mixer functions. Jack is activated by pulling front–panel PULL
FOR MONITOR knob outward.
17. PHANTOM ON/OFF Slide Switch: Controls application of
14 Vdc phantom power for condenser microphones to all in-
puts. With switch on and INPUT MIC/LINE switches in MIC po-
sition, +14 Vdc is applied to pins 2 and 3 of each input XLR con-
nector. NOTE: Phantom power can be internally set to 48 Vdc
(see
Modifiable Functions section). When using other than
Shure condenser microphones, verify that voltage and source
resistance requirements are compatible (see
Specifications).
18. INPUT 1–4 Female 3–Pin XLR Connectors: Permit con-
nection to balanced, low–impedance microphones or line–le-
vel sources. Adjacent MIC/LINE slide switches adjust inputs to
match source levels.
19. Battery Compartment: Accepts two 9–volt batteries for re-
mote operation or as automatic backup in the event of ac pow-
er failure.
PLEASE NOTE
This product is not completely disconnected from the mains
supply when the power switch is Off.
INSTALLATION AND OPERATION
Mixer Installation
Install the FP410E as follows. If the unit is to be placed on a
horizontal surface, attach the four supplied bumpers to the cor-
ners of the chassis bottom to prevent marring the surface.
If the FP410E is to be rack–mounted in a standard 483 mm
(19–inch) audio equipment rack, remove the two Phillips head
screws from each FP410E side panel, place the rack “ears” in
position at the sides (rack–mount holes facing forward), and
secure the ears with the previously removed Phillips head
screws. NOTE: The rack ears are asymmetrical; the
wider ear
should be on your right (as you face the front panel) to permit
access to the battery compartment while the FP410E is in the
audio equipment rack. Install the rack–mounted FP410E in the
equipment rack and secure it with the four supplied rack–
mount screws.
Make electrical connections as follows.
1. For battery operation, compress the release latches of the
battery drawer with thumb and forefinger, and withdraw the
drawer from the compartment. Observing battery polarity
markings, insert two fresh 9–volt batteries in the drawer
slots. With the Power switch on, slide the Battery Test switch
to the right to determine battery condition. IMPORTANT:
Battery operating life is reduced when microphones are
phantom–powered—especially by 48 Vdc phantom power-
ing. For ac operation, connect the power cord to a 230 Vac,
50/60 Hz source.
2. Connect the microphones and/or line–level signal sources
to the Mic Input connectors (use conventional 2–conductor