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B&H# SHFP33 Mfr# FP33
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The Shure FP33 3-Channel Stereo Mixer is a field mixer rugged enough to handle the elements and flexible enough for professional working environments. It is suitable for electronic news gathering (ENG), field production (EFP), film, television and recording for sound design. The FP33 features 3 XLR inputs and left/right XLR outputs. The inputs and outputs can be switched between mic and line level signal. There are additional 3.5mm Monitor and Tape connections as well as both 1/4" and 3.5mm headphone outputs.

The FP33 has panning and level controls on channels 1-3, and the headphone monitor dial provides monitoring of either left or right, dual mono, or stereo signal. Both 48V and 12V phantom power are available and two 9 volt batteries provide up to 8 hours of use. The FP33 can also use AC power from a Shure PS20 or PS20E power supply.

The FP33's Mix Bus output jack allows users to cascade multiple FP33 mixers for simultaneous use, and the professional analog VU meters have proven much more durable against the elements than LED, LCD, or fluorescent meters. The VU meters feature timed or toggled backlighting and are multifunctional. There's also a built-in tone oscillator for calibration needs, and the Monitor In and modified Slate Mic/Tape Out jacks can be used for 2-way isolated talk back.

Main Features

High Quality Inputs and Outputs
The FP33 features balanced XLR inputs and outputs, switchable between mic and line level signal. In addition the FP33 features 3.5mm Monitor input and Tape output jacks.
Quiet Audio Signal
Transformer balanced inputs and outputs result in superior rejection of RFI and electromagnetic hum.
48 and 12 Volt Phantom Power
Both 48 and 12 Volt Phantom power is supported allowing up to 8 hours of use on two 9 Volt batteries.
Mix Bus Output
The Mix Bus output jack allows users to cascade multiple FP33 mixers for simultaneous use. Also allows tandem use with the Shure FP32A.
Professional VU Meters
Professional analog VU meters are more durable against elements than LED, LCD, or fluorescent meters. The meters feature timed or toggled backlighting and are multifunctional.
Built-In Tone Oscillator
The FP33 provides a 1kHz test tone oscillator for calibration of tape machines, meters etc.
Isolated Two-Way Talk Back
Isolated two-way talk-back using Monitor In and modified Slate Mic/Tape Out jack.
4 Headphone Monitor Modes
Headphone Monitor switch allows monitoring of Left, Left + Right (Mono), Right and Stereo audio signals. Perfect for isolating either "mid" or "side" signal when using stereo microphones.
Compact Rugged Design
The Compact rugged plated metal chassis is made to withstand extreme heat and cold for full operation under harsh conditions.

Additional Features

  • Dynamic range greater than 100dB
  • Wide range input gain controls handle hot signal levels
  • Link switch gangs inputs 2 and 3 to control a stereo microphone
  • Switchable low-cut filters on each input
  • Bi-color LED signal presence and peak indicator for each input
  • Dual-clutched Master gain control for versatile output level adjustment
  • Bi-color LED limiter and peak indicator for each output
  • Two linkable output peak limiters with adjustable thresholds and release times
  • Slate microphone and slate tone with selectable functions
  • Mixer/Monitor In switch (locking and momentary)
  • Internal Monitor defeat switch for split-feed headphone operation
  • 1/4" and 3.5mm headphone outputs
  • Regulated voltage rails provide exceptional headroom
  • Battery check switch and low battery warning LED
  • External power operating range of 12 to 30VDC
  • Rugged, plated metal chassis
  • Operates for 8 hours on two 9 V alkaline batteries
  • Includes carrying case, shoulder strap, and mix bus cable
  • Customized operation via internal DIP switches, trim pots, slide switches, and optional jumpers
Connectivity
Inputs 3 x Balanced XLR inputs
Output 2 x Balanced XLR outputs (1 x L/R)
Headphone Outputs 1 x 1/4" TRS stereo
1 x 3.5mm TRS stereo mini
ALT I/O 1 x 3.5 mm TRS stereo mini - Monitor In
1 x 3.5 mm TRS stereo mini - Tape Out
Link Input/Output "MIX BUS" connection: 3-Pin mini-XLR connector
Performance
Input Impedance Mic: 1kΩ internal; use with 19 to 600Ω source; -10 dBV clip level
Line: 50kΩ internal; use with ≤ 10kΩ source; +36 dBV clip level
Monitor: 10kΩ internal; use with ≤ 1kΩ source; +21 dBV clip level
Output Impedance Mic: 1Ω internal; use with Low-Z source; -31 dBV clip level
Line: 150Ω internal; use with 600Ω source; +18 dBm clip level
Tape: 2.2kΩ internal; use with >10kΩ source; +3 dBV clip level
Headphones: 300Ω internal; use with 8 to 200Ω source; +11 dBV clip level
Gain Low-Z Mic Input: Line 78 dB, Mic 28 dB, Headphone 89 dB, Tape 66 dB
Line: Line 28 dB, Mic -22 dB, Headphone 39 dB, Tape 16 dB
Monitor: Headphone 11 dB
Frequency Response 20 to 20,000 Hz ± 2.0 dB (channel controls centered)
THD 0.25% THD @ +4dBm output, 50 to 20,000 Hz
Equivalent Input Noise -127 dBV with 150Ω source, 20 to 20,000 Hz
Output Noise Master level fully CCW: ≤ -100 dBV, 20 to 20,000 Hz
Master level fully CW: ≤ -80 dBV, 20 to 20,000 Hz
Common Mode Rejection Ratio 65 dB @ 100 Hz, -20 dBV input
Polarity Mic/Line to Mix Bus: inverting
all other signal paths are non-inverting
Overload Protection Shorted outputs, even for prolonged periods, cause no damage. Microphone inputs of up to 3 Vrms cause no damage. The Line and monitor inputs can withstand signals of up to 30 Vrms.
Output Clipping Level ≥ -18 dBm @ line output into 600Ω
Oscillators Tone Oscillator: 1 kHz ±10%
Slate Tone Oscillator: 400 Hz ±10%
Limiter Threshold: adjustable; 0 dBm to +15 dBm
Attack time: 1 mS
Release time constant: selectable; 100 mS or 1 second
Indicator: green when limiting by 1 dB or more
Microphone Power 12V Phantom through matched 680Ω
48V Phantom: through matched 6.8kΩ
12V T (A-B): through matched 180Ω
General
LED Indicators Input Channel Bi-Color LEDs:
Green: Signal presence; visual indication of mix level
Red: 6 dB below clipping level

Output Peak/Limiter Bi-Color LEDs:
Green: Output being limited by 1 dB or more
Red: Output peak threshold reached; factory set at +17 dBm; user adjustable from 0 to 17 dBm
VU Meter VU Left/Right Channel Output Level Meters: 0 VU preset at +4 dBm output level
Operating Temperature Operating: 0 to 60° C (32 to 140° F)
Storage: -40 to 85° C (-40 to 185° F)
Power Internal: two 9V alkaline batteries
External: 12-30 VDC to DC In jack; non-polarized
Current Drain Approximately 41 mA (idle) at 18V
Battery Life 8 hours minimum, typical
Dimensions (H x W x D) 2.26 x 7.24 x 6.33" (58 x 184 x 161 mm)
Weight 3.5 lb (1.6 kg)
Shure FP33 3-Channel Stereo Mixer
  • Carrying Case
  • Shoulder Strap
  • Mix Bus Cable
  • Set of Rubber Feet
  • Spare Fuse
  • Limited 1-Year Warranty