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Fostex FM-4 Field Mixer With 4-Channel Input And 2-Channel Main Outputs

Product Code FOFM4
Manufacturer Fostex

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Description

As a 4-channel portable audio mixer designed specifically for EFP, broadcast, on-location TV and film applications, you would expect exceptional audio performance with flexible output options and the FM-4 does not disappoint. Each of the 4 balanced XLR inputs can accept mic or line level inputs and features 12T and 48V Phantom power, an ultra-low noise pre-amp design with high quality custom transformers and switchable Hi Shelving EQ and Mid Sweep EQ. Metering is taken care of by an easy to read, highly visible organic LED display with high resolution metering offering both VU and peak level indication, battery level and selectable stereo and mono modes.

Specifications

Inputs

INPUT 1 through INPUT 4: XLR-3-31 type (transformer balanced)

MIC input

Input impedance: 2 k Ohm or more

Nominal input level: -70 dBu to -30 dBu

Phantom Power: P48V or T12V (selectable)

LINE input

Input impedance: 10 k Ohm or more

Nominal input level: -20 dBu to +4 dBu

AUX IN: XLR-5-51 type (electronically balanced)

Input impedance: 20 k Ohm or more

Nominal input level: +4 dBu

RTN IN: Connector: ø3.5mm stereo mini-phone jack (unbalanced)

Input impedance: 10 k Ohm or more

Nominal input level: -10 dBV

 

Outputs

MAIN OUT (L, R) / DIRECT OUT (CH1-2): XLR-3-32 type (transformer balanced)

Applicable load impedance: 600 Ohm or more

Nominal output level: +4, 0, -10 or -60 dBu (FM-4) / +4, 0, -20 or -60 dBu (FM-3) (switchable)

FM-4 SUB OUT / DIRECT OUT (CH 3-4): XLR-5-52 type (electronically balanced)

FM-3 SUB OUT: XLR-5-52 type (electronically balanced)

Applicable load impedance: 10 k Ohm or more

Nominal output level: +4, 0, -20 or -60 dBu (switchable)

TAPE OUT: Connector: ø 3.5mm stereo mini-phone jack (unbalanced)

Applicable load impedance: 10 k Ohm or more

Nominal output level: -10 dBV

AUX OUT: Connector: ø3.5mm stereo mini-phone jack (unbalanced)

Applicable load impedance: 10 k Ohm or more

Nominal output level: -10 dBV or -60 dBV (switchable)

PHONES: Connectors : 1/4” stereo phone jack and ø3.5mm stereo mini-phone jack

Applicable load impedance: 8 Ohm or more

LIMITER:

Attack time: approx 5 msec. Release time: approx 200 msec.

Threshold level: +6, +9 or +12dBu (FM-4) / +6 or +12dBu (FM-3) output level

Ratio: 3:1 or 5:1 (level and ratio can be selected using the status mode)

DC IN: XLR-4-32 type (male). Input voltage: DC10V to DC 24V

DC OUT: Hirose 4 pin (female). Applicable plug: Hirose HR10A-7P-4P. DC7.2V - 24

 

Performance

Frequency response:

LINE IN - MAIN OUT: 20Hz to 20kHz +/- 1dB (reference level)

MIC IN - MAIN OUT: 40Hz to 20kHz +/- 1dB (reference level)

HEADPHONES (32 Ohm load, 25mW output power): 20Hz to 20kHz +/- 3dB

S/N ratio (A-weighted):

LINE (INPUT GAIN: +4 dBu): 80dB or better

MIC (INPUT GAIN: -70dBu: 55dB or better (equivalent input noise: -125 dBu)

Total harmonic distortion:

LINE: 0.1% or less at 1 kHz (Input Gain +4dBu)

MIC: 0.1% or less at 1kHz (Input Gain -70dBu)

Headphones residual noise: (PHONES level control at minimum)

-72 dBV or less (A-weighted)

Crosstalk: -70 dB or less at 1kHz

HPF: 40Hz to 200Hz, -12dB/oct. The cutoff frequency is continuously sweepable.

EQ: HI: 10kHz fixed, +/-12dB MID: 200-8kHz variable, +/-12dB

 

Physical

External dimensions: 274 (W) x 57 (H) x 180 (D) mm (Including protrusions)

Weight: Approximately 1.5kg (not including the internal batteries)

 

Internal batteries: Eight AA batteries (alkaline: 12V, nickel hydride: 9.6V)

Power requirement: DC7.2 to 12V

External power supply: Optional AC adaptor (AD15C / AD15-4300)

Equipment available to buy from this site is for professional use only. Please note in certain countries some products listed may not be available from A.C. Entertainment Technologies Ltd.

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