Atlas IED TSD-DA28 User manual

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com– 1 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
TSD-DA28
2x8 Balanced Line
Distribution Amplifier

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.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 AtlasIED TSD-DA28 2x8 distribution amplier is designed to provide clean, isolated signal
distribution locally or to remote locations. The unit allows two independent balanced line level source
inputs to be distributed to eight isolated variable outputs making it a perfect solution for applications
including convention centers, houses of worship, restaurants/sports bars and industrial facilities.
Isolation between outputs prevents crosstalk, removes miss matched input impedance concerns
and allows for adjustable levels on each connected device. All I/O is via Phoenix style connectors for
installation convenience and inputs may be easily paralleled for 1 in / 8 out conguration.
The TSD-DA28 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 Atlas Time Saving Devices.
Features
• Two (2) Balanced Line Inputs
• Eight (8) Isolated Balanced Line Outputs
• Signal & Peak Indicator LEDs For Each
Channel
• High Gain Output for Driving Long
Balanced Lines
• Security Covers Included for All Front
Panel Controls
• Multiple Mounting Congurations
• Cable Management System
• Separate Ground Connections
• Removable Phoenix Style I/O Connectors
• Meets Energy Star™ Standards
• Compact Chassis Design
Audio Applications
• Line Preamp
• Line Drive
• Zone Divider
• Broadcast
Installation
• Churches
• Restaurants
• Sports Bars
• Schools
• Industrial Facilities
• House of Worship

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com– 3 –
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. Input Level Controls - Adjust the gain of the source audio signal that is applied to the DA28
circuitry. Turn clockwise to increase the signal level and counter-clockwise to decrease it.
Note: The Input Level Control knob can be removed and replaced with a supplied security cover to
prevent unauthorized adjustment.
2. Output Level Controls - Adjust the level of each of the eight outputs using these individual controls.
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 supplied security covers to prevent
unauthorized adjustment.
3. Power LED - Illuminates Blue when 24VDC is present.
4. Input Peak LED - 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 input level control on the front panel.
5. Signal LED - Illuminates Green when the input signal strength reaches 25mV to verify a signal
path.
3
5
4
12

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com – 4 –
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 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 Line Input - Connects to a balanced line level source. Your connection must be mated
properly to the input connector or signal loss and/or noise may occur. Note: Unbalanced line level
inputs can be inserted with proper wire conguration by connecting the (G) and (-) terminals
together.
3. Balanced Line Output - Connections to provide output when an input signal is present for
connection to balanced line level devices. Your output connections must be connected properly to
the connectors or loss and/or noise may be introduced into the signal. Note: Unbalanced line level
devices can be used with proper wire conguration by connecting the (G) and (-) terminals
together.
4. 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.
3
1
44
4 4
2 3

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com– 5 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
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.

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com – 6 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
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.
(M3 x 4mm)
(M3 x 4mm)

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com– 7 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
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.

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com – 8 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
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.

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.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
G
–
+
OUTPUT 1
G
–
+
INPUT 1
G
–
+
INPUT 2
OUTPUT 1 LEVEL
ON FRONT PANEL
INPUT 1 LEVEL
ON FRONT PANEL
INPUT 1 LEVEL
ON FRONT PANEL
G
–
+
OUTPUT 2
OUTPUT 2 LEVEL
ON FRONT PANEL
G
–
+
OUTPUT 3
OUTPUT 3 LEVEL
ON FRONT PANEL
G
–
+
OUTPUT 4
OUTPUT 4 LEVEL
ON FRONT PANEL
G
–
+
OUTPUT 5
OUTPUT 5 LEVEL
ON FRONT PANEL
G
–
+
OUTPUT 6
OUTPUT 6 LEVEL
ON FRONT PANEL
G
–
+
OUTPUT 7
OUTPUT 7 LEVEL
ON FRONT PANEL
G
–
+
OUTPUT 8
OUTPUT 8 LEVEL
ON FRONT PANEL
PEAKSIGNAL
PEAKSIGNAL
DC 24V
24V
POWER SHOW
LED

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com – 10 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Specications
Description 2 x 8 Line Distribution Amplifier
Chassis Color Black
Chassis Material Aluminum
Inputs
Type Qty 2, Balanced Line
Connection Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 10KΩ Balanced, 5KΩ Unbalanced
Line Input Level 1V (0dBV) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 6V (15dBV)
Outputs
Type Qty 8, Balanced
Connection Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 300Ω Balanced, 150Ω Unbalanced
Line Output Level 1V (0dBV) In = 2V (+6dBV) Balanced, Maximum Output 6V (15dBV)
Controls
Input Level Control Qty 2, Removable Knobs with Security Covers
Output Level Control Qty 8, Removable Knobs with Security Covers
Indicators
Input Signal Green, 25mV On Threshold
Input Peak Red, -3dB Before Clip
Power Blue
Electrical
Frequency Response 20Hz - 20kHz (±1dB)
THD .06% & 1kHz
Signal to Noise 90dB
Power Requirements
Voltage 24VDC
Power Consumption 80mA
Power Consumption 1.92W
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 10
Level Control Security Covers Qty 10

Owner’s Manual
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com– 11 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
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
TSD-DA28
2x8 Distribution Amplifier
AtlasIED.com – 12 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis,Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
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.
IED is a registered trademark of Innovative Electronic Designs LLC. All Rights Reserved.
All other trademarks are the property of their respective owners. All specs are subject to change without notice. ATS003937 RevB 4/17