Fostex X-24 service manual Definition, Mixer Section

Page 4

X-24

1. SPECIFICATIONS

DEFINITION

Specification Unit

Normal Fader Position

Input fader

Condition

Master fader

Condition

MIXER SECTION

Standard Input

MIC IN

Connector

Input level

Impedance

LINE IN / INSERT (RCV)

Connector

Input level

Impedance

Standard Output

TAPE OUT 1 ~ 4

Connector

Output level

Load impedance

LINE OUT L, R

Connector

Output level

Load impedance

INSERT (SEND)

Connector

Output level

Load impedance

Phones Max. Output Level

Level Indication

Frequency Response

MIC IN (Input Level: -50 dBV)

MIC IN (Input Level: -10 dBV)

LINE IN (Input Level: -10 dBV)

S / N (shorted by 150 Ω resistor)

MIC IN (MIC GAIN: MIC)

MIC IN (MIC GAIN: LINE)

0 dBV = 1 Vrms

At 8 ± 1 position

LINE IN / INSERT: -10 dBV / 1 kHz

Recorder: Input Monitor mode (REC - PAUSE)

Adjust input fader for -10 dBV at TAPE OUT.

PAN: L (R)

At 8 ± 1 position

LINE IN / INSERT: -10 dBV / 1 kHz

Recorder: Input Monitor mode (STOP)

Adjust master fader for -10 dBV at LINE OUT.

PAN: L (R)

Phone (unbalanced) / XLR (balanced) -50 ~ -10 dBV

10 kΩ or more

Stereo phone (tip) -10 dBV

10 kΩ or more

RCA pin -10 dBV

10 kΩ or more

RCA pin -10 dBV

10 kΩ or more

Stereo phone (ring) -10 dBV

10 kΩ or more

20 mW or more (1 kHz, 16 Ω load)

0 dB is indicated by 5-dot LED bargraph meter when input / output level is -10 dBV with the above standard input / master fader position settings.

40 ~ 20 kHz ± 3 dB at LINE OUT

20 ~ 20 kHz ± 3 dB at LINE OUT

50 ~ 10 kHz ± 2 dB at PHONES (10 mW / 16 Ω)

66 dB or more at LINE OUT (DIN AUDIO)

68 dB or more at LINE OUT (IHF A)

73 dB or more at LINE OUT (DIN AUDIO)

75 dB or more at LINE OUT (IHF A)

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Contents Model Safety Instructions Table of Contents Definition Mixer SectionMixer Section Recorder SectionRecorder Section CONTROLS, Indicators & Connectors Routine Maintenance Cleaning Head Front PanelDemagnetizing Procedures Test Equipment and Adjusting ToolsCapstan and pinch roller DemagnetizingTape Travel Check and Adjustment Volume & SW settingCheck and Adjusting of Head Azimuth Tape Speed Check and AdjustmentErase Current Adjustment Coarse Bias AdjustmentPlayback Frequency Response Calibration Record Level CalibrationOverall Frequency Response Adjustment 14. T.H.D. MeasurementErasure Measurement Cross Erasure Measurement18. S/N Measurement Sync crosstalk measurementClick Noise Measurement Overall Exploded View & Parts List Table of Adjusting ItemsTransport Exploded View & Parts List Overall Exploded View Transport Exploded View PCB Pattern Drawing Regulator PCBs Parts List Mixer PCBJack PCB PCBVT, DSK10C-BT Regulator PCB AbbreviationBlock Mixer / Jack PCBsRegulator PCBs PCBBlock Diagram REC TRK