FP33
Shure
FP33
Shure FP-33 Field Mixer
This 3-input, 2 output, portable stereo mixer is specifically designed for remote audio recording, electronic field production, electronic news gathering, and location film production. It has an exceptionally low self-noise and a wide dynamic range that are perfect for use with DAT and other digital recording media.
Dimensions: 7.25"H x 6.38"W x 2.25"D
Technical Tools
PDF Documents
- Product Manual - Shure - FP33 (728 KB)
Manufacturer Specs
Measurement conditions, unless otherwise specified
Operating Voltage: 18 Vdc
Full gain 1 kHz input signal.
Output terminations: Line 600Ω, Mic 150Ω
Tape Out: 50 kΩ
Headphone: 200Ω
Frequency Response:
20 to 20,000 Hz ±2.0 dB (channel controls centered).
Total Harmonic Distortion
0.25% THD at +4 dBm output, 50 to 20,000 Hz.
Equivalent Input Noise
–127 dBV with 150 Ω 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 Ω
Low–Cut 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
Operating Voltage: 18 Vdc
Full gain 1 kHz input signal.
Output terminations: Line 600Ω, Mic 150Ω
Tape Out: 50 kΩ
Headphone: 200Ω
Frequency Response:
20 to 20,000 Hz ±2.0 dB (channel controls centered).
| Voltage Gain | ||||
| Input | Line | Mic | Headphone | Tape |
| Low-Z Mic (150Ω) | 78dB | 28dB | 89dB | 66dB |
| Line | 28dB | -22dB | 39dB | 16dB |
| Monitor | -- | -- | 11 dB | -- |
| Inputs | |||
| Input | IMPEDANCE | Input Clip Level |
|
| Designed for | Actual | ||
| use with | (Internal) | ||
| Mic | 19 to 600Ω | 1 kΩ | -10 dBV |
| Line | ≤ 10 kΩ | 50 kΩ | +36dBV |
| Monitor | ≤ 1 kΩ | 10 kΩ | +21 dBV |
| Outputs | |||
| Input | IMPEDANCE | Output Clip Level |
|
| Designed for | Actual | ||
| use with | (Internal) | ||
| Mic | Low-Z inputs | 1 Ω | -31 dBV |
| Line | 600 Ω | 150 kΩ | +18 dBV |
| Tape | >10 kΩ | 2.2 kΩ | +3 dBV |
| Headphones | 8 to 200 Ω | 300 Ω | +11 dBV |
Total Harmonic Distortion
0.25% THD at +4 dBm output, 50 to 20,000 Hz.
Equivalent Input Noise
–127 dBV with 150 Ω 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 Ω
Low–Cut 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