Fostex FM-3 - Manual (Page 21)

21
PHONES
• Connectors : 1/4” stereo phone jack and ø3.5mm stereo
mini-phone jack
• Applicable load impedance: 8Ω or more
• Maximum output power: 50mW (at 32Ω load, THD: 0.1% or
less）
DC IN
• Connector: XLR-4-32 type (male)
• Input voltage: DC10V to DC 24V
DC OUT
• Connector: Hirose 4 pin (female)
* Applicable plug: Hirose HR10A-7P-4P
• Output voltage: DC7.2V - 24V (Max. 0.5A)
MAIN OUT (L, R)
• Connector: XLR-3-32 type (transformer balanced)
• Applicable load impedance: 600 Ω or more
• Nominal output level: +4, 0, -20 or -60 dBu (switchable)
• Maximum output level: +24, +20, 0 or -40 dBu (switchable)
SUB OUT
• Connector: XLR-5-52 type (electronically balanced)
• Applicable load impedance: 10 kΩ or more
• Nominal output level: +4, 0, -20 or -60 dBu (switchable)
• Maximum output level: +24, +20, 0 or -40 dBu (switchable)
TAPE OUT
• Connector: ø 3.5mm stereo mini-phone jack (unbalanced)
• Applicable load impedance: 10 kΩ or more
• Nominal output level: -10 dBV
• Maximum output level: +10 dBV
AUX OUT
• Connector: ø3.5mm stereo mini-phone jack (unbalanced)
• Applicable load impedance: 10 kΩ or more
• Nominal output level: -10 dBV or -60 dBV (switchable)
• Maximum output level: +10 dBV or -40 dBV (switchable)
INPUT 1 through INPUT 3
• Connector: XLR-3-31 type (transformer balanced)
• Input impedance: 10 kΩ or more
• Nominal input level: -20 dBu to +4 dBu
• Maximum input level: +29 dBu
• Input impedance: 2 kΩ or more
• Nominal input level: -70 dBu to -30 dBu
• Maximum input level: -5 dBu
AUX IN
• Connector: XLR-5-51 type (electronically balanced)
• Input impedance: 20 kΩ or more
• Nominal input level: +4 dBu
• Maximum input level: +29 dBu
RTN
• Connector: ø3.5mm stereo mini-phone jack (unbalanced)
• Input impedance: 10 kΩ or more
• Nominal input level: -10 dBV
• Maximum input level: +15 dBV
Specifications
Inputs/Outputs
* 0dBu = 0.775Vrms
Frequency response
• LINE IN - MAIN OUT:
20Hz to 20kHz +/- 1dB (reference level)
• MIC IN - MAIN OUT:
40Hz to 20kHz +/- 1dB (reference level)
• HEADPHONES (32Ω 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
0.1％ or less at 1 kHz
Headphones residual noise (PHONES level control at minimum)
-72 dBV or less (A-weighted)
Crosstalk:
-70 dB or less at 1kHz
Performance
Others
Phantom power:
P48 (phantom 48V) and T12 (A-B 12V)
power supply circuit for each input
channel.
* T12 power supply can be disabled or enabled using the
status mode.