Fostex LM16 manual Connecting sources, Adjusting the input level, Selecting channel source

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Model LM16 [Mixer basics]

Connecting sources

• Connecting sources to the input connectors

Each of mixer channels 1 through 16 provides a combo type -- a combined XLR connector and phone jack in one. You can connect a microphone to the XLR connector or connect a line signal to the phone jack. (The phone jack can accept both balanced and unbal- anced signals.)

You can adjust the input gain using the [TRIM] control on each mixer channel strip.

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INSERT

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K

 

 

 

 

 

K

 

 

 

 

 

 

PHANTOM

POWER

 

 

 

<Note>: When you turn on the phantom power, make sure that the [TRIM] controls on the corresponding mixer channels are set fully left (minimum) or the LM16 is pow- ered off.

Usually phantom power does not damage a dynamic microphone, however, do not con- nect an old ribbon microphone to an input connector to which phantom power is sup- plied.

• Selecting channel source

On each of input channels 15 and 16, the [SOURCE (INPUT/SUB IN)] select switch is provided. When the switch is in the INPUT () position, a signal from the [INPUT] con- nector is selected. When the switch is in the SUB IN ( ) position, a signal from the [SUB IN] jacks (L for channel 15, R for channel 16) is selected (see page 34 for details).

• Phantom power supply setting

48 V phantom power can be supplied to the XLR input connectors. For most of condenser microphones, the phantom power is required.

You can turn on or off phantom power using the [PHANTOM] switches in eight channel groups (1-8 and 9-16) using these switches.

 

 

 

 

 

 

PHANTOM

INSERT

INSERT

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CONTROLLER

 

 

 

 

 

 

 

 

PHANTOM

POWER

 

 

 

<Memo>: When the [PHANTOM] switch is set to ON, the corresponding [PHANTOM] indi- cator on the control panel is illuminated.

<Note>: When you turn off phantom power, the indicator is not immediately turned off, however, phantom power is immediately turned off.

Adjusting the input level

The [TRIM] control adjust the head amp gain of each input signal. To get the optimum gain, set this control appropriately so that the [PEAK] indicator lights at the maximum in- put level.

By adjusting this control appropriately, the LM16 can accept a signal within -60dBu and -12dBu for an XLR connector is connected, while it can accept a signal within -40dBu and +8dBu when a phone plug is connected.

<Memo>: It is important to set the [TRIM] con- trol appropriately. Otherwise, the signal may be distorted or noisy.

Optimum gain

Too high

Too low

Clipping level

Clipping level

<Note>: The [TRIM] control the gain of the head amplifier with a two-stage pre-amp and there is a point where the gain is switched (at approx. -35 dBu for XLR input, -15 dBu for phone input). At this point, a noise may be generated.

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Contents Model LM16 Safety Instructions Important Safety Instructions Table of contents Signal flow of the mixer Connecting sources Adjusting the input level Low-cut filter Limiter EqualizerUpgrading the software About power supply Precautions on installationAbout version upgrade IntroductionCleaning the exterior CondensationAbout damage About CAT-5 cableOverview Main features Before using the unit Unpacking the cartonSetting the main unit and control unit separately Usage examples of LM16Integrating the main unit and control unit Mounting the main unit and control unit on the rackIntegrating the control unit and main unit Necessary itemsRack mount adaptor After attaching the adaptor Connecting the power cord Preparation of power supplyConnection to external devices Connection example live stageConnection example home recording MTRBalanced and unbalanced inputs/outputs BalancedNames and functions Control unit input channel 1 through POST/PRE switch Mute switch14 ST/1-2/3-4 assign switches Solo switchSUB in jacks / SUB in control Control unit Master channelMonitor section Internal effects section Phantom 1-8, 9-16 indicatorsControl section AUX Send controls / Solo switches 24 27 EFF Send control / Solo switchAssign to Stereo OUT switches Output Limiter switchControl unit rear panel Main unit rear panelPhantom 1-8, 9-16 switches Controller connectorGroup OUT 1, 2, 3, 4 connectors Stereo OUT L, R connectorsSignal flow of the mixer Mixer basicsConnecting sources Adjusting the input levelConnecting sources to the input connectors Phantom power supply settingGain adjustment while monitoring EqualizerLow-cut filter LimiterUsing an external effect processor Using AUX 1, 2Pre-fader Post-faderUsing Insert Using the internal effects processorApplying the internal effects Monitoring About the effect typesChannel grouping Solo monitorSet the Source switches on channels 15 and 16 to TRK Using SUBSet the ST assign switches on channels 15 and 16 to on Block diagram Showing date information Showing version informationR peak indicators R meters between 7Specifications Inputs/OutputsPhysical dimensions Power Consumption approx WGeneral Main unitMMC Command List Midi Implementation Chart Model LM16Declaration of EC Directive Forthe US Customers only Fostex America Limited Warranty Shipping Index Effect processorMemo Page Fostex CO