SHURE FP33 มิกเซอร์ 3-Channel Stereo Mixer

The FP33 is a 3-input, 2 output, portable stereo mixer specifically designed for remote audio recording, electronic field production, electronic news gathering, and location film production.

FP33 features include: High-quality, sealed input potentiometers, Dynamic range of over 100dB 48V phantom, 12V phantom power, and 12V T (A-B) power, LED indicators of input levels, output peaks, limiter action, and low battery. Pop-up pan pots and a link switch to couple inputs 2&3 into a stereo pair, Mix Bus to connect an additional FP33 or FP32A, comprehensive headphone monitoring control including headphone MS stereo matrix, internal DIP switches for over 4,000 customized setups. The FP33 has an exceptionally low self-noise and a wide dynamic range that are perfect for use with DAT and other digital recording media.

New: Ability to link with the Shure FP24 mixer using the A33LK accessory cable to create a highly portable 5 x 2 audio production system.

• Exceptionally quiet design, suitable for use with DAT and other digital formats
• Extended frequency response of 20 Hz–20 kHz
• Dynamic range greater than 100 dB
• Transformer balanced inputs and outputs for superior rejection of RFI and electromagnetic hum
• Three selectable mic/line inputs
• Two selectable mic/line outputs
• Wide range input gain controls handle hot signal levels without attenuators
• 48 V phantom, 12 V phantom, and 12 V T (A-B) microphone power
• Pop-up pan pots
• 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
• Professional VU meters with selectable timed or toggled backlighting
• Dual clutched Master gain control for simultaneous or separate adjustment of output levels
• 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
• Isolated two-way talk-back using Monitor In and modified Slate Mic/Tape Out jack
• High tolerance 3.5 mm jacks for stereo Tape Out and Monitor In
• 1 kHz tone oscillator
• Mix bus jack and cable to link FP33 or FP32A mixers
• Headphone monitor mode switch to select L, L+R (Mono), R, or Stereo
• Internal headphone level adjustments to balance post–master audio levels and Monitor In levels at the headphone output
• Selectable M/S decoding circuit for headphone monitor.
• Mixer/Monitor In switch (locking and momentary)
• Internal Monitor defeat switch for split-feed headphone operation
• Headphone volume control
• 1/4 in. and 3.5 mm jacks for stereo headphone outputs.
• Customized operation via internal DIP switches, trim pots, slide switches, and optional jumpers
• Regulated voltage rails (±15 Vdc) provide exceptional headroom
• Bi-color power On/Off LED
• Battery check switch and low battery warning LED
• Non-polarized external power jack
• External power operating range of 12 to 30 Vdc
• Soft-touch, color coded control knobs with raised position indicators
• Metal XLR input and output connectors
• Rugged, plated metal chassis
• Operates for 8 hours on two 9 V alkaline batteries
• Includes carrying case, shoulder strap, and mix bus cable

 Specifications

Measurement conditions, unless otherwise specified:

Operating Voltage: 18 Vdc Full gain

1 kHz input signal.

Output terminations: Line 600 ohms;Mic 150 ohms;

Tape Out 50 kilohms, Headphone 200 ohms

Frequency Response

20 to 20,000 Hz +/- 2.0 dB (channel controls centered).

Voltage Gain

Inputs

Outputs

Total Harmonic Distortion

0.25% THD at +4 dBm output, 50 to 20,000 Hz.

Equivalent Input Noise

­127 dBV with 150 ohm 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 at 100 Hz, ­20 dBV input.

Polarity

Mic/Line In to Mic/Line Out Non-Inverting

Mic/Line In to Headphones Non-Inverting

Mic/Line In to Tape Out Non-Inverting

Mic/Line to Mix Bus Inverting

Monitor In to Headphones Non-Inverting

Overload and Shorting

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.

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.

Output Clipping Level

+18 dBm at line output into 600 ohms

Low­Cut Filters

6 dB down at 150 Hz; 6 dB/octave slope.

Pan Attenuation Level

45 dB.

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 s.

Indicator: Green when limiting by 1 dB or more.

Microphone Power

12 V Phantom: 12 V through matched 680 ohms

48 V Phantom : 48 V through matched 6.8 kilohms

12 V T (A­B):12 V through matched 180 ohms

Mixer Power

Internal: Two 9 V alkaline batteries.

External: 12­30 Vdc to dc In jack; non­polarized.>

Current Drain: Approximately 41 mA (idle) at 18 V.

Battery Life: 8 hours minimum, typical.

Temperature Range

Operating: 0 degrees to 60 degrees C (32 degrees to 140 degrees F).

Storage: ­40 degrees to 85 degrees C (­40 degrees to 185 degrees F).

Overall Dimensions (H x W x D)

58 mm x 184 mm x 161 mm (7­1/4 x 6­3/8 x 2­1/4 in.).

Net Weight (without batteries)

1.6 kg (3.5 lbs).