AtlasIED TSD-ML22VCA Users Guide

Owner’s Manual

2x2 Mic/Line Preamp & VCA

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

TSD-ML22VCA

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

AtlasIED.com – 1 –

Specifications are subject to change without notice.

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

Owner’s Manual

Description

The AtlasIED TSD-ML22VCA is a 2 input, 2 output true VCA with enhanced features including a high

quality microphone pre amplier. VCA’s inserted prior to amplication provides a far more efcient
solution than transformer-based attenuators for volume adjustment in high power music applications.
The dual channel design can provide level control for two separate discrete zones or stereo sources
and is perfect for use in sports bars, restaurants, hotels or other installations.

The TSD-ML22VCA also provides two high quality, low noise mic pre-amps, which allows
simplication of designs that require remote microphone level adjustment. Switchable phantom
power is provided for powering condenser microphones and a 12dB/octave @ 125Hz high pass lter
is available on each mic input to minimize bass rumble and low frequency feedback in the system
ensuring focus and clarity for the voice spectrum.

The TSD-ML22VCA is part of a full line of AtlasIED Time Saving Devices. These compact
(1.5" x 4" x 2.75") units are designed to solve some of the common audio system problems in the
easiest and in the most efcient 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-proof security covers. The TSDs are highly efcient and meet Energy Star™
standards as one 24V DC power supply (available separately) can power multiple AtlasIED Time
Saving Devices.

Features

• Two (2) Selectable Balanced Mic or Line
Inputs

• High Gain Mic Input 50dB

• 12dB/Oct @ 125Hz Low Cut Filter Per Input

• Phantom Power Per Input

• Two (2) Balanced Mic/Line Outputs

• Separate Channel VCAs for Remote Level

Control via Wall Plate or Programmable
External DC

• Input Peak Indicator Per Channel

• Input Signal Indicator Per Channel

• High Gain Output for Long Distance

Applications

• Cable Management System

• Multiple Mounting Congurations

• Separate Ground Connections

• Removable Phoenix Style I/O Connectors

• Security Covers Included for All Front
Panel Controls

• Meets Energy Star™ Standards

• Compact Chassis Design

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Audio Applications

• Mic Preamp

• Line Preamp

• Line Drive

• Choirs

• Remote System Controller

Installation

• Churches

• Restaurants

• Sports Bars

• Schools

• Industrial Facilities

• House of Worship

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Owner’s Manual

2x2 Mic/Line Preamp & VCA

TSD-ML22VCA

Front Panel Description

4

5

3

1 2

1. Input 1-2 Level Controls - Adjusts the gain of the independent input signals. 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.

2. Output 1-2 Level Conrols - Adjusts the gain of the independent output signals. Turn clockwise to
increase the signal level and counter-clockwise to decrease it. Note: The Output Level Control
knobs can be removed and replaced with a supplied security cover to prevent unauthorized
adjustment.

3. Power LED - Illuminates Blue when 24VDC is present.

4. Input Peak LEDs - Illuminates Red when the input signal reaches 3dBV below when signal clipping
will occur. Occasional ashing is normal but if this indicator is continuously On, then reduce the
input level using the output level controls on the front panel. There is an LED for each input
channel.

5. Signal LEDs - Illuminates Green when the input signal strength reaches 25mV to verify a signal
path. There is an LED for each input channel. Note: The LED will not illuminate if the output Level is
turned Off.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

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TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

Owner’s Manual

Rear Panel Description

55

5 5

1 2 3

TSD Input/Output connections are removable for easy system wiring. The connector has 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 specications
on current requirements in milliamps to match with the appropriate power supply. 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. Balanced Mic/Line Input 1-2 - Connects to balanced line or mic level sources. Your connection
must be mated properly to the input connector or signal loss and/or noise may occur. For gain or
source input type selection, refer to the “Dip Switch Function Identication” chart for proper
input setting. Note: Unbalanced line level inputs can be inserted with proper wire conguration by
connecting the (G) and (-) terminals together.

3. Balanced Mic/Line Output 1-2 - Provides output when an input signal is present for connection
to balanced mic or line level devices. Your output connections must be connected properly to
the connectors or loss and/or noise may be introduced into the signal. For gain or source input
type selection, refer to the “Dip Switch Function Identication” chart for proper output setting.
Note: Unbalanced line level devices can be used with proper wire conguration by connecting the
(G) and (-) terminals together.

4. VCA - Remotely control the audio levels via VCA technology. Connect one side of a 10K linear taper
pot to the terminal marked DC10V, the other side of the pot to the (G) terminal, and the wiper to the
Control 1 terminal. Set the switch to the correct channel terminal. Control 1 will adjust input
channel 1 and Control 2 will adjust input channel 2.

5. Cable Management Retainer Points - Each TSD includes two cable retainer straps for securing
the included cable management retainers. Remove one of the rear panel screws, align the
panel hole with a retainer and rmly tighten the screws.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

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Owner’s Manual

2x2 Mic/Line Preamp & VCA

TSD-ML22VCA

Dip Switch Function Identication

SWITCH FUNCTIONS

Switch Position

• DIP SW # 1 - 24VDC Phantom Power applies power for condenser mic operation. Down
position is On.

• DIP SW # 2 - Input Mic or Line Select for input gain selection. Up position is Line, down position
is Microphone.

• DIP SW # 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 each input. Ideal for vocal
microphones to reduce low frequency energy and to increase intelligibility. Down position is On.

• DIP SW # 4 - Output Mic or Line Select for ouput gain selection. Up position is Line, down
position is Microphone.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

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Specifications are subject to change without notice.

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

Owner’s Manual

Cable Management

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. Small pliers may
be required to remove the knobs. Align the security cover to the level control panel hole. Push the
cover into the hole until it snaps into place. Do not force or damage may occur to the potentiometer.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

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Specifications are subject to change without notice.

Owner’s Manual

2x2 Mic/Line Preamp & VCA

TSD-ML22VCA

Mounting

Listed below are the ways to mount the TSD and the optional accessories that can be purchased.

1. Velcro™ - Each unit includes two 2" x 2" pieces of industrial-grade Velcro™ with adhesive backing
to adhere to any at surface. Clean all surfaces before applying the adhesive side of the Velcro™.

2. Multi Mount Plate - Each TSD includes a versatile multi-position mounting plate. This plate
allows the TSD to be mounted to any surface; but is ideal for use with rear rack rails or side rack
hat channels. Use the included M3 x 4mm screws to install the plate on the TSD. Note: Only use
the included M3 x 4mm screws as other screws may be too long and will cause internal damage
to the TSD. The multi-position mounting plate is a new addition being included with TSDs. If the
TSD being used did not include the mounting plate, contact AtlasIED customer service at
1-800-876-3333.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

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Specifications are subject to change without notice.

(M3 x 4mm)

(M3 x 4mm)

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

Owner’s Manual

Optional Mounting Accessories

1. TSD-RMK 19" Width Rack Mount Kit - For 19" rack mounting, AtlasIED offers an optional rack
mount kit, the TSD-RMK. This rack mount kit can support up to four TSD units. The kit includes
three blank panels designed to ll any unused slots. Use the included hardware to mount the TSD
into the rack mount kit using the top mount screw holes on the TSD.

2. TSD-RMKHR Half Width Rack Mount Kit - AtlasIED offers an optional rack mount kit that can
be used in half width rack applications including the AtlasIED WMA-HR and AWR-HR models.
The TSD-RMKHR can support up to two TSDs. Included is an extra blank panel to ll one of the
spaces if only one TSD is being used.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

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Owner’s Manual

3. TSD-RRMK Rear Rack Mounting Kit - For complete exibility in mounting a TSD or TSD external
power supplies the optional TSD-RRMK is available. The TSD-RRMK can support mounting of
either two larger TSDs with external power supplies or up to 4 TSD models. Note: Only use the
included M3 x 4mm screws as other screws may be too long and will cause internal damage to
the TSD.

2x2 Mic/Line Preamp & VCA

TSD-ML22VCA

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

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Specifications are subject to change without notice.

2x2 Mic/Line Preamp & VCA

INPUT 1 FUNCTION SET

Block Diagram

+
–

INPUT 1

G

+
–

INPUT 2

G

TSD-ML22VCA

1

2

3

4

MIC

OFF

ON

PEAK

3

MIC

OFF

ON

OUTPUT

OUTPUT

1 2 3 4

LINE

MIC

4

1 2 3 4

LINE

MIC

PHANTOM

INPUT

LOW CUT

OFF

LINE

ON

MIC

MIC/LINE

LOW CUT

125Hz -12dB

INPUT 1

LEVEL

INPUT 2 FUNCTION SET

1

2

PHANTOM

INPUT

LOW CUT

OFF

LINE

ON

MIC

MIC/LINE

LOW CUT

125Hz -12dB

INPUT 2

LEVEL

PEAK SIGNAL

SIGNAL

Owner’s Manual

MIC/LINE

+

VCA

OUTPUT 1

LEVEL

FROM VCA CTRL 10V DC

MIC/LINE

VCA

OUTPUT 2

LEVEL

–
G

DC 10V OUT (20mA MAX)
CHANNEL 1 VCA CTRL
CHANNEL 2 VCA CTRL
GND

MINI

PHOENIX

+
–
G

CHANNEL 1
OUTPUT

CHANNEL 2
OUTPUT

20 V TO PREAMP

POSITIVE REGULATORS
FILTER, ANTI-JAMMING

10 V TO VCA CTRL

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

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Specifications are subject to change without notice.

DC 24V

Owner’s Manual

2x2 Mic/Line Preamp & VCA

TSD-ML22VCA

Specications

Description 2 x 2 Mic/Line Preamp with VCA Control

Chassis Color Black

Chassis Material Aluminum

Inputs

Type Qty 2, Balanced Mic or Line Selectable
Connection Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 1.2KΩ Balanced, 600Ω Unbalanced
Phantom 24VDC Defeatable
Low Cut Filter 125Hz/12dB Defeatable
Line Input Level 1V (0dBV) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 6V (+15dBV)
Mic Input Level 46dB Gain, 10mV (-40dB) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 40mV (-27dBV)

Outputs

Type Qty 2, Balanced Mic or Line Selectable
Connection Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 300Ω Balanced, 150Ω Unbalanced
Line Output Level 1V (0dBV) In = 2V (+6dBV), Maximum Output 6V (15dBV)
Mic Output Level 10mV (-40dBV) In = 80mV (-21dBV),
Maximum Output 300mV (-10dBV)

Controls

Input Level Control Qty 2, Removable Knobs with Security Covers
Output Level Control Qty 2, Removable Knobs with Security Covers
VCA Control Port Channel 1 & 2, +10VDC Return Design,
Removable 4 Position Captive Screw 3.5mm Spacing
Dip Switch Function • Qty 2, Phantom Power 24VDC

• Qty 2, Input Mic/Line Select

• Qty 2, Input 125Hz/12dB High Pass Filter

• Qty 2, Output Mic/Line Select

Indicators

Input Signal Green, 25mV On Threshold, Qty 2
Input Peak Red, -3dB Before Clip, Qty 2
Power Blue

Electrical

Frequency Response 20Hz - 20kHz (±1dB)
THD .06% & 1kHz
Signal to Noise Line to Line: 85dBV
Mic to Line: 70dBV
Line to Mic: 55dBV
Mic to Mic: 55dBV

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

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Specifications are subject to change without notice.

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

Power Requirements

Voltage 24VDC
Power Consumption 70mA
Power Consumption 1.68W

Dimensions H 1.5" (39mm) x W 4" (101mm) x D 2.75" (70mm)

Weight 6oz, .165kg

Included Accessories

Velcro™ Industrial-Grade
Multi-Mount Plate Qty 1, Includes Two (2) M3 x 4mm Screws

Cable Retainers Qty 2

Level Control Knobs Qty 4
Level Control Security Covers Qty 4

Optional Accessories

TSD 24VDC Power Supply
TSD-RMK 1 RU 19" Width Rack Mount Panel (Supports 4 TSD Units)
TSD-RMKHR 1 RU Half Rack Width Panel (Supports 2 TSD Units)
TSD-RRMK Rear Rack Mounting Kit

Safety and Certifications

External Power Supply cUL, CE, RoHS, TUV

Owner’s Manual

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

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Specifications are subject to change without notice.

Owner’s Manual

Notes:

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

AtlasIED.com – 13 –

Specifications are subject to change without notice.

Notes:

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

Owner’s Manual

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

AtlasIED.com – 14 –

Specifications are subject to change without notice.

Owner’s Manual

Notes:

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

AtlasIED.com – 15 –

Specifications are subject to change without notice.

TSD-ML22VCA

2x2 Mic/Line Preamp & VCA

Owner’s Manual

Limited Warranty

All products manufactured by AtlasIED are warranted to the original dealer/installer, industrial or
commercial purchaser to be free from defects in material and workmanship and to be in compliance
with our published specifications, if any. This warranty shall extend from the date of purchase for
a period of three years on all AtlasIED products, including SOUNDOLIER brand, and ATLAS SOUND
brand products except as follows: one year on electronics and control systems; one year on
replacement parts; and one year on Musician Series stands and related accessories. Additionally,
fuses and lamps carry no warranty. AtlasIED will solely at its discretion, replace at no charge or
repair free of charge defective parts or products when the product has been applied and used in
accordance with our published operation and installation instructions. We will not be responsible
for defects caused by improper storage, misuse (including failure to provide reasonable and
necessary maintenance), accident, abnormal atmospheres, water immersion, lightning discharge,
or malfunctions when products have been modified or operated in excess of rated power, altered,
serviced or installed in other than a workman like manner. The original sales invoice should be
retained as evidence of purchase under the terms of this warranty. All warranty returns must comply
with our returns policy set forth below. When products returned to AtlasIED do not qualify for repair
or replacement under our warranty, repairs may be performed at prevailing costs for material and
labor unless there is included with the returned product(s) a written request for an estimate of repair
costs before any nonwarranty work is performed. In the event of replacement or upon completion of
repairs, return shipment will be made with the transportation charges collect.

EXCEPT TO THE EXTENT THAT APPLICABLE LAW PREVENTS THE LIMITATION OF CONSEQUENTIAL
DAMAGES FOR PERSONAL INJURY, ATLASIED SHALL NOT BE LIABLE IN TORT OR CONTRACT
FOR ANY DIRECT, CONSEQUENTIAL OR INCIDENTAL LOSS OR DAMAGE ARISING OUT OF THE
INSTALLATION, USE OR INABILITY TO USE THE PRODUCTS. THE ABOVE WARRANTY IS IN LIEU OF
ALL OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.

AtlasIED does not assume, or does it authorize any other person to assume or extend on its behalf,
any other warranty, obligation, or liability. This warranty gives you specific legal rights and you may
have other rights which vary from state to state.

Service

Should your Atlas TSD require service, please contact the AtlasIED

warranty department at 1-877-689-8055, ext. 277 to obtain an RA number.

AtlasIED Tech Support can be reached at 1-800-876-3333 or support.atlasied.com.

Visit our website at www.AtlasIED.com to see other Atlas products.

©2017 Atlas Sound L.P. The Atlas “Circle A”, Soundolier, and Atlas Sound are trademarks of Atlas Sound L.P.

All other trademarks are the property of their respective owners. All specs are subject to change without notice. ATS003944 RevC 4/17

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IED is a registered trademark of Innovative Electronic Designs LLC. All Rights Reserved.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: [phone] • Fax: [phone]

Specifications are subject to change without notice.