FM-3

3 Channel Portable Mixer

Main Features

  • Balanced 3ch input and 2ch main outputs
  • Light but robust aluminum body construction
  • Metal axis fader pots using conductive plastic to extend its quality and durability

FM-3 3 Channel Portable Mixer

The FM-3 Portable Mixer offers a three-input, stereo output portable mixing solution and has been designed primarily for ENG (professional electronic news gathering) but is also at home in on-location film productions. It’s equipped with 3 balanced inputs (switchable phantom power), with a 2ch main output plus a wide variety of sub outputs.

Both the FM-4 and FM-3 are robust, rugged designs with all controls, inputs and outputs easily accessible on three main surfaces with no ‘round the back’ controls. Special care has been taken to ensure noise levels are kept extremely low, which makes these mixers perfect for use in any over-the-shoulder production application including digital transmission links or digital video and audio recording media.

With their low-noise circuitry, exceptional audio fidelity and unique feature sets the new Fostex Portable Mixer / Mic Pre are not only more than suitable for all professional broadcast and film applications, they set a new benchmark for portable on-location mixing devices.

Options

EX-BP2, Battery Pack for FM-3/FM-4
The exclusive battery pack for FM-3 and FM-4 containing 8 x AA batteries. It has more than 6 hours operation with alkaline batteries (phantom off). The same unit that is included in the FM-3 and FM-4 package.

AD15-4300, AC Adapter for FM-3/FM-4
15V 4.3A external power supply unit for FM-3 and FM-4 for long time stationary use.

SC-FM3,Carrying Case for FM-3
A carrying case is also available. Model SC-FM3 is manufactured from high-grade materials, is ultra-durable and includes pockets for accessories / batteries etc.

In Detail

Specifications

Inputs
FM-3 INPUT 1 through INPUT 3: 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
AIN OUT (L, R): 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)
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

Physical
External dimensions: 210 (W) x 57 (H) x 156 (D) mm (Including protrusions)
Weight: Approximately 1.2kg (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)

Document Downloads

The following documents are available to download in Adobe Acrobat format.

    Brochure

    Owners Manual

For more document downloads, check the manuals section in Technical Support

Recorders and Mixers

FM-3 : 3 Channel Portable Mixer