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Fostex FM-4 Owner'S Manual Download Page 1

Thank you very much for purchasing the Fostex FM-4 portable mixer.

To  ensure  the  best  performance,  read  this  manual  thoroughly  before  using  the  unit.  Keep  this 

manual handy for future reference.

Table of contents

Safety Instructions  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .2
Precautions  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .4

 

Precautions before using  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 4

 

Precautions on installation  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 4

Main features  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .5
Basic operations   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .6

 

Preparation of power supply   .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 6

 

Prepararion of input channels   .  .  .  .  .  .  .  .  .  .  .  .  .  . 7

 

Preparation of output channels  .  .  .  .  .  .  .  .  .  .  .  .  . 7

 

Preparation of metering   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 7

 

Preparation of monitoring  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 8

 

Master fader reference setting  .  .  .  .  .  .  .  .  .  .  .  .  .  . 8

 

Master fader reference setting  .  .  .  .  .  .  .  .  .  .  .  .  .  . 9 

 

Audio setting  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 9

Block diagram   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .10
Names and functions   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .11

 

Front panel  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 11

 

Left side panel  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 14

 

Right side panel  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 15

Display 

  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  17

 

Adjusting the display brightness  .  .  .  .  .  .  .  .  .  .  . 17

 

Selecting the meter mode   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 18

 

Selecting the status display  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 18

 

Input status display  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 19

 

 

T12 power supply mode setting  .  .  .  .  .  .  .  . 19

 

Output status display  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 20

 

 

Status information details   .  .  .  .  .  .  .  .  .  .  .  .  . 21

 

 

Limiter parameter setting  .  .  .  .  .  .  .  .  .  .  .  .  .  . 21

 

Meter status display  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 22

 

 

Parameter setting procedure  .  .  .  .  .  .  .  .  .  .  . 22

 

 

Parameter details  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 23

 

 

 

Peak meter on/off   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 23

 

 

 

VU meter reference level  .  .  .  .  .  .  .  .  .  .  . 23

 

 

 

Lighting level of peak over indicator  .  . 23

 

 

 

Internal battery selection  .  .  .  .  .  .  .  .  .  .  . 23

 

System status display  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 24

 

 

Initializing the flash memory .  .  .  .  .  .  .  .  .  .  .  . 24

Specifications  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .25
External dimensions  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .27

8289670000

 (505068)

FM-4

 PORTABLE MIXER

Owner’s Manual

Summary of Contents for FM-4

Page 1: ...der reference setting 9 Audio setting 9 Block diagram 10 Names and functions 11 Front panel 11 Left side panel 14 Right side panel 15 Display 17 Adjusting the display brightness 17 Selecting the meter mode 18 Selecting the status display 18 Input status display 19 T12 power supply mode setting 19 Output status display 20 Status information details 21 Limiter parameter setting 21 Meter status displ...

Page 2: ...point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUGTOWIDESLOT FULLYINSERT ATTENTION POUR EVITER LES CHOCS ELECTRIQUES INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE...

Page 3: ...ones and headphones can cause hearing loss 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this apparatus near water 6 Clean only with dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other appar...

Page 4: ...g the AC adaptor and remove batteries and consult your dealer or the nearest FOSTEX service station Do not drop the unit or give it a strong shock The in ternal circuits display or panels may be damaged To prevent possible electric shock and damage to the unit do not remove the cover or reach the inside of the unit Precautions on installation Do not install the unit in the following conditions In ...

Page 5: ...lect the meter display mode from stereo mono left and mono right The unit can be operated on battery or AC power You can fit the battery box with eight AA alkaline or nickel hydride batteries inside the unit or connect the optional AC adaptor or external battery Note that no battery is supplied with the unit Up to five hour continuous operation is possible us ing alkaline batteries Note that the a...

Page 6: ...ed nickel hydride batteries of the same model and same capacity Note Insert the battery box to the battery box compartment in thecorrectdirectionbymatchingthe symbolonthebatterybox tothe symbolonthepaneloftheunit Symbol Battery box Memo You can set the battery type alkaline or nickel hydride to be used from the meter display By default it is set for alkaline batteries If you use nickel hydride bat...

Page 7: ...k The nominal output level of this jack is fixed to 10 dBV Memo The stereo buss signal is output from the TAPE OUT jack You can turn on the unit by setting the POWER switch on the front panel to INT upper position or EXT lower position When you operate the unit on internal battery power set the switch to INT When you operate the unit on external power set it to EXT When you turn on the unit for th...

Page 8: ... Adjust the display brightness if required When the unit is shipped the display brightness is set to Level 3 You can change it to the optimum brightness ac cording to the circumstance See page 17 for de tails Stereo metering Mono metering L 1 Connect headphones to the 1 4 inch PHONES jack on the front panel or the mini phone PHONES jack on the right side panel You can use both the 1 4 inch and min...

Page 9: ... sound level 3 Raise up the channel fader of each channel gradually until the meter shows the proper level 4 Set the pan and HPF controls of each input channel appropriately if required Memo The HPF cuts the unnecessary low fre quency range such as wind blowing 5 If you want to apply the EQ to input channels set the EQ switches and controls appropri ately To use the EQ select the input channels yo...

Page 10: ..._OUT_L T12 P48 MIC POWER LINE MIC LINE MIC MIC POWER MIC MIC P48 LINE T12 LINE MIC POWER MIC MIC P48 LINE T12 LINE 4 0 10 60dBu 4 0 10 60dBu 4 0 10 60dBu TAPE OUT MAIN OUT L MAIN OUT R SUB OUT L AUX MIX SW AUX IN CH1 IN CH2 IN CH3 IN AUX OUT1 10 60dBV LINE 4 20dBu MIC 30 70dBu LINE 4 20dBu MIC 30 70dBu LINE 4 20dBu MIC 30 70dBu PAN PEAK DET 4dBu RTN R HP VOL L R L R AUX R RTN L L R PHONE1 L L R AU...

Page 11: ...x 64 dot matrix display using organic LED devices shows the VU needle and peak bar graph meters battery status etc When you first turn on the unit after purchasing the stereo VU and peak meters are shown 1 PFL Pre Fader Listen keys 1 through 4 While pressing down the key the pre fader signal before the input channel fader is output from the PHONES jacks In this condition the display shows the PFL ...

Page 12: ...ction is disabled the limiter circuit is bypassed LINK The limiter function is enabled with the left and right channels linked If either of left and right channel signals exceeds the threshold both the left and right channel limiters work in the same way The limiter parameters are factory preset as shown below You can change the threshold level and ratio from the output status display see page 21 ...

Page 13: ... by arrows below When the limiter is working LIM flashes The following shows display examples of the stereo meter display When the switch is set to OFF When the switch is set to ON or LINK LIM icon LIM icon 19 HPF controls 1 through 4 Each control sets the high pass filter function At the left most position OFF position the HPF circuit is bypassed Rotating the control knob clockwise switches on th...

Page 14: ...o 24 V 1 2 3 4 GND Lch HOT Lch COLD Rch HOT 5 Rch COLD 1 2 3 GND HOT COLD 1 2 3 4 GND NC NC DC 7 2 V to 24 V 4 Input select switches LINE MIC Each switch should be set appropriately according to the input signal source of the corresponding IN PUT connector DM P48 No microphone power is supplied When you connect a dynamic microphone set the switch to DM 48 volt phantom power supply mode A 48 V powe...

Page 15: ...ct the reference level of these connectors from 4 dBu 0 dBu 10 dBu and 60 dBu 5 Battery compartment You can set the battery box that houses eight AA alkaline or nickel hydride batteries see page 6 When you use internal battery power set the POWER switch to INT 6 EJECT LOCK lever This lever locks or unlocks the battery box When you remove the battery box slide down this lever to unlock the battery ...

Page 16: ...s are output Note When you select the DIRECT position you cannot apply the limiter to the output signals of the MAIN OUT connectors 11 TAPE OUT jack This jack outputs the unbalanced stereo buss sig nal The reference level is fixed to 10 dBV Connector 3 5 mm stereo mini phone jack 12 RTN jack This jack accepts a 10 dBV stereo signal Connector 3 5 mm stereo mini phone jack 13 PHONES jack You can con...

Page 17: ...the unit If you initialize the flash memory using the system status display it is reset to the default setting see page 24 Display Memo When the brightness adjustment bar is shown pressing the key long enough sets the brightness to OFF while pressing the key returns the brightness to the previous level be fore entering the brightness adjustment mode When the brightness is set to any level lower th...

Page 18: ...mode setting remains even after you turn off the unit If you initialize the flash memory using the system status display it is reset to the default setting see page 24 1 Press the METER key long enough to enter the meter select mode The meter mode icon is shown at the bottom of the display 2 Press the or key to select the desired meter mode 3 Immediately after selecting the desired meter mode pres...

Page 19: ...ng enough The icons change to the fast flashing icons You can now edit enabled disabled setting of the T12 power supply function shows Enable setting which is the default Note In the following description it is assumed that the input select switches LINE MIC are set to MIC and the Microphone power supply switches are set to DM on the left side panel In this condition the input status display looks...

Page 20: ...e SOURCE SEL switch setting the display looks as below When the SOURCE SEL switch is set to MIX The display shows the status of the switches shown below as well as the output sources The following shows the default setting when the unit is shipped You can set the threshold and ratio of the limiter from this display Output status display Memo The T12 disabled enabled setting re mains even after you...

Page 21: ... Icon Status information details Upper AUX 1 Lower AUX 2 Limiter parameter setting 1 While the output status display is shown press the EDIT key long enough the current THRE value starts flashing quickly You can now edit the threshold level Note In the following description it is assumed that the LIMITER switch on the front panel is set to ON and the input status display looks as below 2 By pressi...

Page 22: ...N OFF You can enable or disable the peak meter function for the left and right channels independently 2 VU meter reference 0 VU level You can set the reference level for the left and right channels indepen dently 3 Threshold level of the peak over indicator You can set the peak threshold level for the left and right channels independently 4 Internal battery type You can set the battery type betwee...

Page 23: ...nd 18 dB in 1 dB steps Internal battery selection When you use alkaline batteries select this op tion When you use nickel hydride batteries select this option Note This setting allows the EMPTY indicator and the alert for battery exchange work correctly according to the battery type When you operate the unit on internal battery power this item should be set correctly Battery life depends on the ba...

Page 24: ...of primary battery e g alkaline gets shorter 3 Power on time This item shows the elapsed time since the unit is powered on The time display is running in realtime Initializing the flash memory You can initialize the flash memory to the condition when the unit is shipped from the factory To initialize the flash memory press and hold down the EDIT key for 10 sec onds or more while the system status ...

Page 25: ...impedance 10 kΩ or more Nominal output level 10 dBV or 60 dBV switchable Maximum output level 10 dBV or 40 dBV switchable AnalogInputs INPUT 1through INPUT 4 Connector XLR 3 31 type transformer balanced LINEinput Input impedance 10 kΩ or more Nominal input level 20 dBu to 4 dBu Maximum input level 29 dBu MICinput Input impedance 2 kΩ or more Nominal input level 70 dBu to 30 dBu Maximum input level...

Page 26: ...ference only The actual operation time depends on the operational condition or circumstance Note 2 The more time the nickel hydride battery is charged or discharged the maximum capacity de creases Note 3 The data shown above is measured using nickel hydride batteries that has been fully charged just before Because a nickel hydride battery self dis charges it is recommended to charge nickel hydride...

Page 27: ...27 External dimensions 274 252 180 57 ...

Page 28: ...28 Memo ...

Page 29: ...ghton Essex IG10 3NY U K TEL 44 20 8418 0778 FAX 44 20 8418 0624 AUSTRIA NAME ATEC Audio u Videogeraete VertriebsgesmbH ADD Im Winkel 5 A 2325 Velm Austria TEL 43 2234 74004 FAX 43 2234 74074 BELGIUM NAME General Audio ADD Raymond Pelgrimslaan 101 B 1702 Groot Bijgaarden Belgium TEL 32 2 4630650 FAX 32 2 4661500 DENMARK NAME Benum Nordic A S ADD Meterbuen 18 Skovlunde 2740 Denmark TEL 45 4451 8900...

Page 30: ...esulting from accident misuse abuse or neglect 7 Damage resulting from failure to perform routine maintenance and or calibration procedures 8 Damage resulting from failure to follow instruction in the owner s manual 9 Damage resulting from repair or attempted repair or by someone other than a Fostex America Service technician or a technician at an authorized Fostex America service station 10 Damag...

Page 31: ...particularity to allow Fostex America to inspect or adjust the problem 3 All accessory items appurtenant to that problem LIMITATIONS OF IMPLIED WARRANTIES AND EXCLUSIONS OF CERTAIN DAMAGES Unless considered unenforceable or unlawful under applicable law A All implied warranties including warranties of merchantability and fitness for a particular purpose are limited in duration to term of this warr...

Page 32: ...32 FOSTEXCO 3 2 35 Musashino Akishima shi T okyoJapan 196 0021 PRINTED IN JAPAN JULY 2009 8289670000 505068 ...

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