Atlas TSD-MIX42RT User manual

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com– 1 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
TSD-MIX42RT
4x2 Mic/Line Mixer with
Priority Sense and Remote Control

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com – 2 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Description
The versatile Atlas Sound TSD-MIX42RT 4x2 mic/line mixer is ideal for applications where paging,
priority music override and/or remote input selection with level control are required. Use alone or in
conjunction with amplifiers in meeting rooms, digital signage, luxury suites, and/or other applications
requiring versatile, stereo or mono multi source mix control.
The unit includes one mic/balanced line input via removable Phoenix style connector and three
stereo 3.5mm inputs. Switchable phantom power is provided for the mic input to facilitate condenser
microphones. The high quality, low noise internal mic preamps ensure clarity and quiet operation
without unwanted coloration. A 12dB/octave high pass filter @ 125Hz also is available on the mic
input to minimize bass rumble and low frequency feedback.
Priority paging can be accomplished via contact closure or VOX trigger on Input 1 that will mute
Inputs 2, 3, or 4 (assignable). A remote level control feature allows use of the Atlas Sound AAVC-10K
or WPD-VC10K decorative wall plate control for convenient remote adjustment of either the entire
Master mix bus or Inputs 2, 3, or 4.
Remote Input selection and level control can be accomplished by using the optional WPD-MIX42RT
wall controller. The WPD-MIX42RT can be placed up to 200 ft away from the TSD-MIX42RT. The audio
quality is not affected by the distance because no audio is present at the WPD wall controller. All that
is needed to obtain maximum system control are 8 conductors, a TSD-MIX42RT and a WPD-MIX42RT.
There are several installations that require audio override sensing for applications such as a Juke
Box’s playback or digital signage advertisement. The TSD-MIX42RT is ideal for these types of
installations. When Input 3 is assigned to Juke Box Override and receives a signal, it mutes stereo
Inputs 1 and 2. When the audio is not present on Input 3 for 20 seconds, Inputs 1 and 2 fade back in
and resumes play.
A variable output limiter provides system protection by reducing clipping and distortion - which is
especially useful when mixing mic and/or line sources with varying volumes.
The TSD-MIX42RT is part of a full line of Atlas Sound Time Saving Devices. These compact
(1.5" x 4" x 2.5") units are designed to solve some of the common audio system problems in the easiest,
most efficient, and cost-effective way. All models are made from high quality components and
include removable individual I/O connectors for quick and precise wiring, separate ground terminals
for all I/Os assuring secured connections, and removable level controls that can be replaced with
tamper-resistant security covers. The TSDs are highly efficient and meet most energy standards as
one 24V DC power supply (available separately) can power multiple Atlas Time Saving Devices.

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com– 3 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Features
 • StereoorMonoConfigurations
 • OneBalancedMic/LineInput
 • Switchable24VPhantomPower
 • ThreeUnbalancedStereoLineInputs3.5mm
 • VoxSenseandContactClosure,PriorityMute
 • VariableOutputLimiter
 • RemoteLevelControl
 • 12dB/OctaveLowCutFilter@125HzMic/Line
 • RemoteControlInputSelect&LevelControl
 • AudioAutoSensingJukeBoxOverride
 • InputSignal&PeakIndicatorLEDs
 • HighGainOutputforDrivingLongBalancedLines
 • SeparateGroundConnections
 • SecurityCoversIncludedforAllFrontPanelControls
 • CableManagementSystem
 • Multiple Mounting Configurations
 • RemovablePhoenixStyleI/OConnectors
 • MeetsMostEnergyStandards
 • CompactChassisDesign
Audio Applications
 • Mixer
 • MicPreamp
 • LinePreamp
 • StereoSummingPreamp
 • LineDrive
 • RemoteLevelControl
 • PriorityPaging
 • MusicOverride
 • DigitalSignalAutoSense
Installation
 • Restaurants
 • SportsBars
 • Schools
 • IndustrialFacilities
 • HouseofWorship

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com – 4 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Front Panel Description
1. Power LED - Illuminates Blue when 24VDC power is present.
2. Signal LED-IlluminatesGreenwhentheinputsignalstrengthreaches25mVtoverifyasignal 
path. Note:TheLEDwillnotilluminateiftheinputlevelisturnedOff.
3. Input Peak LED - Illuminates Red when the output signal reaches 3dBV below when signal clipping
will occur. Occasional flashing is normal but if this indicator is continuously On, then reduce the
input level using the input level control on the front panel.
4. Limiter LED-AdjustmentoftheLimiterfeatureshouldbedoneaftertheinputgain(s)havebeen 
 properlyset.EachInputshouldbeadjustedsotheOutputLimitercontrolcanbesetsothisLED 
flashes to indicate that the limiter circuit is active.
5. Input Level Controls 1, 2, 3, and 4 - Independently adjust the level of input signals 1 through 4. Turn
clockwise to increase the signal level and counter-clockwise to decrease it. Note:TheInputLevel
Control knobs can be removed and replaced with a supplied security cover to prevent
unauthorized adjustment.
6. Bracket Retainer Points-EachTSDincludestwomountingbracketsforsecuringtheTSDtoa
cabinet or wall. Remove screws and align the bracket with the panel hole before firmly tightening
the screws.
2
4
3
1
5
66
6 6

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com– 5 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Rear Panel Description
TSD Input/Output connections are removable for easy system wiring. The connectors have a 3.5mm
pitch between pins.
1. DC Power Input-EachTSDthatrequiresDCpowercomeswitha2positionconnectorforan 
external 24VDC power supply (sold separately). Because of the TSD’s low power consumption, a
single external power supply may power more than one TSD. Please refer to the specifications
on current requirements in milliamps to match with the appropriate power supply. Please observe
the polarity of the wiring to this connector. Note: It is acceptable to exceed the current
requirements of the TSDs but NOT safe to use a power supply that is below the current
requirement of the device.
2. Mic/Line Input 4-Connectstobalancedlineormiclevelsources.Forgainorsourceinputtype 
 selection,refertothe“DipSwitchFunctionIdentication”chart.Note: Unbalanced line inputs can
 beinsertedwithproperwirecongurationbyconnectingthe(G)and(-)terminalstogether.
3. Unbalanced Inputs 1 & 2 Stereo 3.5mm (1⁄8") - Stereo Unbalanced Audio Signals.
4. Unbalanced Input 3 - Stereo Unbalanced Audio Signal. Input 3 is also the auto sense Juke Box
Override input. Note: Juke Box Override will not work when Remote Wall Plate is activated.
5. Remote Mute - To mute Input 1, 2, or 3 via a remote switch, assign which channels you want to be
muted via the dip switch provided and short the two terminals together using a dry contact closure.
6. VOX Sense - Adjusts the sensitivity of the Mute circuit for priority pages. Assign the input to be
muted via the corresponding dip switch.
7. Balanced Left & Right Output - Provides output for connection to balanced line level devices.
Note: Unbalanced line level devices can be used with proper wire configuration by connecting
 the(G)and(-)terminalstogether.Monoorstereocongurationsareassignedviatheassociated 
dip switch.
1 4
5 2 6 10 11 12
99
9 9
87 3

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com – 6 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
8. Output Limiter Control - Sets peak output levels by increasing or decreasing the sensitivity.
 TheLimiterLEDonthefrontpanelindicateswhenlimiterisinuse.
9. Cable Management Retainer Points - Use the rear panel screws for connecting the included cable
 retainers.EachTSDcomeswithtwocableretainersforsimpliedcablemanagement.
10.Remote Level-Forremotegaincontrol,connecttheAtlasSoundAAVC-10K(orequal)wallplateto
this terminals. Set dip switch 10 to control a mixed signal or Inputs 1, 2, and 3 signal only.
11.DC Output (Remote LED)-A12VDCoutputisprovidedtopoweraremotesystemONLEDIndicator
on the WPD-MIX42RT wall controller.
12.Wall Plate Interface Input Selection - Inputs 1, 2, and 3 can be remotely selected by shorting the
terminals 1, 2 or 3 to ground. The WPD-MIX42RT provides proper connectivity to easily do this.
Wall Plate Interface
The TSD-MIX42RT is designed to mate with the optional wall plate WPD-MIX42RT. This control
accessory allows you to select Inputs to be sent to the Output, along with a system level control and
a remote system on power indicator. To activate the input selection section, you must assign the
corresponding dip switch. Note: Placement of the WPD-MIX42RT can be placed up to 200 ft away
from the TSD-MIX42RT. The audio quality is not affected by the distance because no audio is present
at the WPD wall controller. All that is needed to obtain maximum system control is 8 conductors,
TSD-MIX42RT and a WPD-MIX42RT. Cat5 cable is ok to use. Note: Juke Box Override will not work
when Remote Wall Plate is activated.

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com– 7 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Dip Switch Function Identification
Switch Position
 • DipSwitch#1-24VDCPhantomPowerappliespowerforcondensermicoperationto 
corresponding input terminal. Down position is ON.
 • DipSwitch#2-InputMicorLineSelectforinputgainselectionforInput4.UppositionisLine, 
down position is Microphone.
 • DipSwitch#3-LowCutFilterengagesat125Hzwitharolloffrateof12dBperoctave.Thislter
  operateseitherintheLineorMicmodeandisavailableonInput4.Idealforvocalmicrophones
to reduce low frequency energy and to increase intelligibility. Down position is ON.
 • DipSwitch#4-Input3canbeusedasanAudioOverridetoMuteInputs1&2.Whensettothe
ON position, if Input 3 receives a signal it will mute Inputs 1 or 2 if they are set to Mute Receive
ON. This is also known as a Juke box Override feature. See DIP SW 5 for delay settings. If the
  switchisintheOFFposition,standardmixsummingInputs1,2and3canbedone.Note:VOX&
Remote CC will also Mute Inputs 1, 2, and 3 if they are assigned to Mute Receive.
 • DipSwitch#5-CorrespondswithDIPSW4ONsettings.WhenInput3receivesasignalto 
mute Inputs 1 or 2, you need to select the length of time needed to sustain the mute. This will
depend on the application and/or audio source material triggering the Override function at
Input 3; you may want short or long Mute Delay (hold) time after the signal has stopped at
Input 3 to assure a smooth transition from Input 3 to inputs 1 or 2.
 • DipSwitch#6-Input3willbemutedwhenaudioispresentatInput4orwhenthemuteCC 
pins are shorted together. Down position is mute receive ON.
 • DipSwitch#7-Input2willbemutedwhenaudioispresentatInput4orwhenthemuteCC 
pins are shorted together. Down position is mute receive ON.
 • DipSwitch#8-Input1willbemutedwhenaudioispresentatInput4orwhenthemuteCC 
pins are shorted together. Down position is mute receive ON.
 • DipSwitch#9-Outputsleftandrightcanbeconguredforstereoleftandrightorcombined 
into a summed mono output. Up position is stereo and down is summed mono.
 • DipSwitch#10-Remotelevelsetswhethertheremotevolumecontroladjustsallinputsmixed
(Inputs 1, 2, 3, and 4) or Inputs 1, 2, and 3 only. Up position is all Inputs, down position is Inputs
1, 2, and 3.
 • DipSwitch#11-WallPlateActivation-ThisswitchisusedfortheoptionalWPD-MIX42RT 
  remotewallcontroller.WhentheswitchisintheUPposition,itisOFF,meaningthatallinputs
are active to the outputs. When in the ON position the wall controller selects Inputs 1, 2, or 3 to
be at the output of the TSD. Note: Input 4 is always present at the outputs in either mode. Note:
Juke Box Override will not work when Remote Wall Plate is activated.
 • DipSwitch#12-NotUsed

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com – 8 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Knob and Security Cover
All front panel level controls feature a removable knob that can be replaced with an included security
cover.Followthesestepstopreventpotentiometerdamageorunwantedchanges.
1. Knob Installation - Turn the potentiometer shaft fully counter-clockwise. Align the knob indicator
to the lowest setting on the panel and the potentiometer shaft slot. Carefully press the knob onto
the potentiometer shaft. Do not force or damage may occur to the potentiometer.
2. Security Cover Installation - Remove the knob from the panel and insert the cover. Do not force or
damage may occur to the potentiometer. Small pliers may be required to remove the knobs.
Mounting
There are three ways to securely mount this TSD:
1. Velcro™-Eachunitincludesindustrial-gradeVelcro™ with adhesive backing to adhere to any
flat surface.
2. Brackets-Eachunitincludestwomountingbracketstosecuretoacabinetorwall.
3. Rack Mount Panel - The optional TSD-RMK rack mount panel supports up to four TSDs in a
1RU space.

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com– 9 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Block Diagram
INPUT 3 INPUT 2 INPUT 1
L
R
L
R
L
R
L
SDA
CLK
VOX
SENS
MUTE CONTROL
VOLUME
ADJUSTMENT
MASTER
VOLUME
MCU
LIMITER
CONTROL
INPUT 1
LEVEL
ON FRONT
PANEL
INPUT 4
LEVEL
ON FRONT
PANEL
RMT
LEVEL
OUTPUT INPUT
G 12V
+12V
+5V
3 2 1 GND
INPUT 2
LEVEL
ON FRONT
PANEL
INPUT 3
LEVEL
ON FRONT
PANEL
OUTPUT
LIMITER LIMITER
SIGNAL PEAK
OUTPUT
STEREO/MONO
24V
POWER SHOW
LED
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
OUTPUT R
G
–
+
INPUT 4
MUTE
CC
G
+5V
MIC/ LINE
LOW CUT
125Hz -3dB
–
+
OUTPUT L
G
–
+
DC24V
–
+
1 2 3 4 5 6 7 8 9 10 11 12
1
INPUT 4
PHANTOM
OFF
ON
2
LINE
MIC
INPUT 4
3
OFF
ON
4
INPUT 3
JUKE OR
OFF
ON
5
20 SEC
3 SEC
6
INPUT 3
MUTE RCV
OFF
ON
7
INPUT 2
MUTE RCV
OFF
ON
9
STEREO
MONO
10
MASTER
INPUT 1,2,3
11
OFF
ON
8
INPUT 1
MUTE RCV
OFF
ON
12
NC NC NC NC
INPUT 4
125Hz/12dB
LOW CUT
INPUT 3
JUKE
MUTE DELAY
OUTPUT
STEREO/
MONO
REMOTE
LEVEL
WALL
PLATE
DIP SWITCH FUNCTION SET

Owner’s Manual
TSD-MIX42RT
4x2 Mic/Line Mixer
AtlasSound.com – 10 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Specifications
Description 4x2StereoLineMixerwithPrioritySense&RemoteLevel
Chassis Color Black
Chassis Material Aluminum
Inputs
Type Qty 3, Unbalanced
Connection 3.5mm Stereo
Impedance 10kΩ
InputLevel 316mV(-10dB)=2V(+6dBV)BalancedOutput,
Maximum Input 1.6V (4.1dBV)
Type Qty1,BalancedMicorLineSelectable
Connection Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 1.2kΩBalanced, 600ΩUnbalanced
Phantom 24VDC Defeatable
LowCutFilter 125Hz/12dBDefeatable
LineInputLevel 1V(0dBV)Balanced=2V(+6dBV)BalancedOutput,
Maximum Input 6V (6dBV)
MicInputLevel 46dBGain,10mV(-40dB)Balanced=2V(+6dBV)BalancedOutput,
Maximum Input 40mV (-27dBV)
Outputs
Type Qty2,BalancedLine,Left&Right
Connection Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 300ΩBalanced, 150ΩUnbalanced
LineOutputLevel 1V(0dBV)In=2V(+6dBV),MaximumOutput6V(15dBV)
Controls
InputLevelControl Qty4,RemovableKnobswithSecurityCovers
Mute CC Contact Closure, Removable 2 Position Captive Screw
3.5mm Spacing
VOX Mute Sens Trim Adjust for Mic Sensitivity
OutputLimiter ThresholdAdjust
RemoteLevel ControlPort10kΩExternalPot,Removable2PositionCaptive 
Screw 3.5mm Spacing
DC12VOutput 12VDCtopowerwallcontrollerLED,Removable2PositionCaptive
Screw 3.5mm Spacing
Wall Controller Interface Connects to optional WPD-MIX42RT wall controller, Removable 4
Position Captive Screw 3.5mm Spacing
Note: Juke Box Override will not work when Remote Wall Plate is
activated.