Daktronics Sportsound ssr-300 gen ii User manual

201 Daktronics Drive

Brookings, SD 57006-5128

www.daktronics.com/support

800.325.8766

SPORTSOUND®RACK

SSR-300 GEN II

OPERATION MANUAL

P1340

DD3631705

Rev 04

13 November 2020

responsibility for errors or omissions. No part of this book covered by the copyrights hereon may be reproduced or copied

in any form or by any means—graphic, electronic, or mechanical, including photocopying, taping, or information

storage and retrieval systems—without written permission of the publisher.

Daktronics trademarks are property of Daktronics, Inc. All other trademarks are property of their respective companies.

– i –

Table of Contents

1 Introduction��1

Important Safety Instructions...............................................................................................................1

Resources ..............................................................................................................................................1

Daktronics Nomenclature ...................................................................................................................2

2 SSR-300 Components ��3

Standard Equipment............................................................................................................................4

Audio Mixer��4

CD/Media Player��4

Announcer’s Interface ��4

Single-Muff Headset��4

Laptop Interface��5

Wireless Microphone System ��5

Feedback Reducer ��6

Distribution Amplier ��6

ADA Hearing Assist System��6

Wireless Personal Stereo Monitor System��6

High Gain Antenna Kit ��7

USB Audio Interface ��7

Optional Equipment.............................................................................................................................7

Self-Powered Monitor Speaker ��7

Signal Cables ........................................................................................................................................7

3 Setup & Operation ��9

Mixer Setup............................................................................................................................................9

Signal Out to Audio System .................................................................................................................9

Announcer Setup .................................................................................................................................9

Powering On .......................................................................................................................................10

Mixer Operation..................................................................................................................................10

Powering Off .......................................................................................................................................11

Wireless Mic System Operation .........................................................................................................12

Wireless Receiver��12

Single Receiver.............................................................................................................................12

Network Receivers .......................................................................................................................12

Wireless Mic & Bodypack Operation��13

Microphone Best Practices................................................................................................................14

Feedback ............................................................................................................................................15

Personal Monitor System Operation.................................................................................................16

Hearing Assist System Operation ......................................................................................................17

4 Maintenance & Troubleshooting��18

Maintenance ......................................................................................................................................18

Troubleshooting ..................................................................................................................................18

5 Replacement Parts ��20

SSR-300 Components .........................................................................................................................20

– ii –

Table of Contents

6 Daktronics Exchange and Repair & Return Programs ��22

Exchange Program ............................................................................................................................22

Repair & Return Program...................................................................................................................23

Daktronics Warranty & Limitation of Liability ...................................................................................23

A Reference Drawings ��25

B Supplementary Manuals��29

C Daktronics Warranty & Limitation of Liability��31

Introduction

1

1 Introduction

This manual explains the operation of the Sportsound®Rack (SSR) 300 Gen II. For

additional information regarding the safety, installation, operation, or service of this

system, refer to the telephone numbers listed in Section 6: Daktronics Exchange and

Repair & Return Programs (p�22). This manual is not specic to a particular installation.

Project-specic information takes precedence over any other general information found

in this manual.

Important Safety Instructions

• Read and understand all instructions before beginning the installation process.

• Do not drop the control equipment or allow it to get wet.

• Do not disassemble control equipment or electronic controls of the system; failure to

follow this safeguard will make the warranty null and void.

• Always turn off and/or unplug the control equipment when it is not in use. This keeps

equipment protected from power spikes and lightning.

• Never yank the power cord from the outlet. Grasp the plug and pull to disconnect.

• Do not let any power cord touch hot surfaces or hang over the edge of a table that

would damage or cut the cord. Arrange the cord with care so that it will not be

tripped over.

• Inspect control equipment for shipping damage such as rattles and dents, and verify

that all equipment is included as itemized on the packing slip. Immediately report

any problems to Daktronics; save all packing materials if exchange is necessary.

• Keep equipment covered when possible to protect from dust and debris.

Resources

Figure 1 illustrates a Daktronics drawing label.

This manual refers to drawings by listing the last

set of digits. In the example, the drawing would

be referred to as DWG-1007804. All references to

drawing numbers, appendices, gures, or other

manuals are presented in bold typeface. Any

drawings referenced in a particular section are

listed at the beginning of it as shown below:

Reference Drawing:

System Riser Diagram....................................................................................... DWG-1007804

Daktronics identies manuals by the DD or ED number located on the cover page.

Daktronics has a searchable knowledgebase of common questions and troubleshooting

tips: www.daktronics.com/en-us/support/systems/Audio%20Systems

Visit the Daktronics Support YouTube channel to learn

how to properly operate Sportsound racks. Go to

www.youtube.com/DaktronicsSupport, and then click

on Playlists to locate the Daktronics Audio - SSR-300

Control System videos along with numerous other

support videos.

Drawing Number

Figure 1: Drawing Label

Introduction

2

Daktronics Nomenclature

Most display components have a white label that lists the part

number (Figure 2). Part numbers will also appear on certain drawings.

If a component is not found in Section 5: Replacement Parts (p�20),

use the label to order a replacement. Refer to Section 6: Daktronics

Exchange and Repair & Return Programs (p�22) if replacing or

repairing any display component.

Main Component Labels

Part Type Part Number

Individual circuit board 0P-XXXX-XXXX

Assembly; a collection of

circuit boards 0A-XXXX-XXXX

Wire or cable W-XXXX

Fuse F-XXXX

Transformer T-XXXX

Metal part 0M-XXXXXXX

Fabricated metal assembly 0S-XXXXXX

Specially ordered part PR-XXXXX-X

0P-1127-0024

SN: 2465

02/19/12 Rev. 1

Figure 2: Part Label

Accessory Labels

Component Label

Termination block for

power or signal cable TBXX

Grounding point EXX

Power or signal jack JXX

Power or signal plug for

the opposite jack PXX

SSR-300 Components

3

2 SSR-300 Components

Reference Drawing:

Audio; SSR-300; 40RU, TF1/TIO.......................................................................... DWG-3618761

Audio; SSR-300; 40RU, TF1/TIO, Layout............................................................ DWG-3618762

In Appendix A, refer to DWG-3618762 for component locations and DWG-3618761 for a

detailed wiring schematic. Figure 3 displays the various announcer’s rack components.

The mixer may be located up to 50' (15.2 m) away from the rack.

# Component Reference Supplementary Manual

1 System ON/OFF Key Powering On (p�10) &

Powering Off (p�11) N/A

2ADA Hearing Assist

System

Hearing Assist System

Operation (p�17)

Listen®LT-800, LR-400 & LA-122 Users

Manuals

3Wireless Personal Stereo

Monitor System

Personal Monitor System

Operation (p�16)

Shure®PSM®900 Personal Wireless

Monitor System User Guide

4 CD/Media Player N/A TASCAM CD-400U Owner's Manual

5 Wireless Receiver @2 Wireless Mic System

Operation (p�12)

Shure®QLX-D®Wireless System User

Guide

6 Feedback Reducer N/A Shure®Model DFR22 Installation Guide

7Distribution Amplier N/A Kramer VM-1610 User Manual

8 Storage Drawers @2 N/A N/A

9 Audio Mixer Mixer Operation (p�10) Yamaha Digital Mixing Console TF

Series Reference Manual

All supplementary manuals are listed in Appendix B.

2

1

5

3

69

4

8

7

Figure 3: SSR-300 Components

SSR-300 Components

4

Standard Equipment

Audio Mixer

The Yamaha TF1 Digital Mixer (Figure 4) provides the

performance and reliability of digital live sound in a

compact design. Main features include:

• 40 input mixing channels (32 mono + 2 stereo

+ 2 return)

• 20 AUX buses (8 mono + 6 stereo) + stereo + sub

• 16 analog XLR/TRS combo mic/line inputs + 2

analog RCA pin stereo line analog inputs

• 17 motor faders (16 channels + 1 master)

• Intuitive multi-touch screen with a simple touch and turn knob

CD/Media Player

The TASCAM CD-400U (Figure 5) is a professional rack-mount CD/Media Player with

exible le formats and inputs/outputs. Other features include:

• MP3, WAV, AAC, and WMA le playback

• Support for SD/SDHC cards and USB memory devices

• Wireless playback via BluetoothTM devices

• AM/FM radio tuner

• Balanced XLR and Unbalanced RCA outputs

Announcer’s Interface

The Daktronics Announcer’s Interface (Figure 6)

includes one (1) balanced MIC output, one

(1) balanced AUX input, and headphone

jacks; headphone volume control knob; and

momentary or continuous microphone activation

buttons. Microphone, stand, and headphones

are provided.

Single-Muff Headset

The professional single-muff headset (Figure 7) may be used in

place of the standard announcer’s interface wired microphone and

headphones. Other features include:

• Ambient noise attenuation

• Neodymium magnet system for high reproduction precision

• Soft, circumaural ear pad

• Cardioid condenser microphone

Figure 4: Audio Mixer

Figure 5: CD/Media Player

Figure 6: Announcer’s Interface Kit

Figure 7: Single-

Muff Headset

SSR-300 Components

5

Laptop Interface

This portable, durable balanced audio converter allows

connection of a laptop or MP3/music player into pro-level

mixers (Figure 8). Other features include:

• 1/8" (3.5 mm) male input

• Balanced XLR male output

• Adjustable output volume control

• Black powder-coated aluminum chassis

Wireless Microphone System

The Shure®QLX-D®is a professional UHF wireless microphone system. Dual receivers in the

audio rack allow operation of two wireless transmitters simultaneously (Figure 9). Over

60 compatible channels per frequency band and up to 17 compatible systems per 6

MHz TV channel are available. Automatic Frequency Selection technology detects the

clearest frequencies in the area. Other features include:

• Effective Range: 328' (100 m) under optimal conditions

• Audio Frequency Response: 20Hz to 20kHz, ±2dB

• Total Harmonic Distortion: <0.1%

• RF Sensitivity: -97 dBm at 10-5 BER

Figure 9: Wireless Mic & Bodypack Transmitter w/ Mute Switch, Lapel Mic, and Headset

Figure 8: Laptop Interface

SSR-300 Components

6

Feedback Reducer

The Shure®DFR22 is a two-input, two-output digital audio processor with feedback

reduction. The 2 x 2 matrix mixer allows either or both inputs to be routed to either or both

outputs, with additional controls for levels and polarity. The unit stores sixteen presets and

provides 24-bit conversion, 48kHz sampling, and a minimum dynamic range of 100 dB.

Distribution Amplier

The Kramer VM-1610 Distribution Amplier is a four-input, twenty-output splitter/distribution

amplier capable of providing twenty discrete balanced outputs from two or four

balanced line-level inputs. Channel 1 L/R and 2 L/R Level controls affect the overall level

of each input.

ADA Hearing Assist System

The Listen®LT-800 Stationary Transmitter in the audio

rack allows individuals to experience every word at

an event. This system is designed to broadcast the

audio signal throughout the facility. It is capable

of transmitting to multiple receiver types and its

adjustable receivers allow each user to have full

volume control.

The Listen LT-4200 Portable FM Receiver (Figure 10)

provides users with the choice of 57 channels

and accessory options ideal for a wide range of

applications. The receivers are digitally tuned so

transmission will not drift, assurance that when you

select a channel it stays on the channel.

Note: If more receivers are required and the transmitter is already

installed, additional receiver packs and headphones are

available to purchase.

Wireless Personal Stereo Monitor System

The Shure®PSM®900 Wireless in-ear monitor system is used for on-eld/

on-stage talent. The system includes a transmitter in the audio rack

and a receiver (Figure 11) worn by the performer that allows for

personal adjustment of mix and volume and compensates for delay

from the sound system.

Sound travels at 1120' (341 m) per second. This produces a

noticeable delay as one moves away from the speaker. Even

experienced performers have trouble adjusting to this delay. A

wireless in-ear monitor system provides a real-time signal to the talent

and blocks the sound delay from their ears.

Note: If more receivers are required and the transmitter is already

installed, additional receiver packs and headphones are

available to purchase.

Figure 10: Portable FM

Receiver w/ In Ear Speaker

Figure 11: PSM

Receiver

SSR-300 Components

7

High Gain Antenna Kit

The Shure®PA805 (Figure 12) is a directional antenna

for increased range and reduced interference. The

“gain” of this antenna enables it to receive signals from

a greater distance than at typical “whip” type antenna.

The antenna allows for increased performance of wireless

microphones with 6 db of gain. The directional antennas

may be located up to 50' (15.2 m) away from the

announcer’s rack.

USB Audio Interface

The Radial®Engineering USB-Pro™ (Figure 13) provides an interface

from laptop computers to balanced outputs. Other features include:

• 24-bit, 96 kHz quality audio

• Two balanced XLR outputs (left and right)

• 3.5mm TRS headphone output

• Ground lift and mono-sum switches

Optional Equipment

Self-Powered Monitor Speaker

The Yamaha MSP3 monitor speaker (Figure 14) features a compact

bass reex cabinet, with a 3.94" (100 mm) two-way cone speaker

and a 0.87" (22 mm) dome speaker. Other features include:

• Three inputs: one 1/4" phone, one RCA, one XLR

• Tone control (High/Low)

Signal Cables

Cable specications are as follows:

• 30' (9.1 m) XLR cable from rack to ber box or wall plate (part # 0A-1340-0301)

• 50' (15.2 m) snake harness from rack to remote mixer (part # W-3627434)

• 5' (1.5 m) XLR cable for auxiliary audio input (part # W-1627)

• 15' (4.6 m) XLR cable from announcer’s interface to wall plate (part # W-2074)

• 25' (7.6 m) XLR cable for connecting additional wired microphones (part # W-1560)

• 3' (1 m) USB A to B cable between USB audio interface and a computer (part #

W-1635)

Figure 12: Directional Antenna

Figure 13: USB

Audio Interface

Figure 14: Self-

Powered Speaker

SSR-300 Components

8

Notes:

• Keep unbalanced cable lengths under 6' (1.8 m) to prevent unwanted noise from being

picked up. Use appropriate converters, such as the LTIBLOX Laptop Interface, to convert to

balanced cables (Figure 15) for longer cable runs if necessary.

• Run audio cables away from power cables to prevent noise.

• Audio cables must be kept separate from current loop (scoreboard control) signal cables.

Figure 15: Balanced/Unbalanced Cable Comparisons

Setup & Operation

9

3 Setup & Operation

All connections are made upon installation. Some equipment may be connected and

disconnected each time it is used. Note that every project is unique, so be sure to follow

any site-specic riser drawings and documentation for the facility to determine the exact

layout of system components.

Mixer Setup

Open the rear rack door to nd a 50'

(15.2 m) snake harness coiled in the

bottom of the rack. Cut the intact cable

tie holding the loose end of the harness,

and route the 5 plugs down through the

hole in the bottom of the rack and out of

the knockout/strain relief (Figure 17).

Route the harness to the desired mixer

location and connect the plugs to the

rear of the mixer according to Figure 16

and the table below:

Snake Harness Plug Mixer Jack

POWER AC IN

DANTE PRI Dante PRIMARY

OMNI OUT 16 16(R)

NETWORK (not currently used

in standard systems)

SPARE

Power on the mixer using the rear rocker switch.

Note: Since the cable harness provides power to the mixer, it can be left powered on,

with the key switch (Figure 18) used to turn it on and off together with the rack.

Signal Out to Audio System

Route the provided 25' (7.6 m) XLR cable into the rack through the knockout/strain relief

(Figure 17). Connect one end of the XLR cable to the TO FIBER BOX end of the snake

harness still cable tied inside the rack. The other end of the XLR cable will typically be

routed and connected to a Fiber Conversion Box.

Announcer Setup

The Announcer’s Interface equipment is typically kept in the bottom storage drawers

along with other accessories. Follow the steps below to properly reconnect it to the rack.

For more information, refer also to the quick guide (DD3083838) shipped with the device.

1� Connect the 2' (610 mm) XLR cable between the microphone and MIC 1 INPUT jack.

2� Connect headphones to the 1/4" or 1/8" jack.

3� Connect the provided 12 VAC wallpack transformer to the power input jack, and

then plug the other end into a standard 120 VAC outlet. Use the tab above the

power jack as a strain relief for the power cord.

4� Connect the 15' (4.6 m) XLR cable from MIC 1 & AUX 1 on the announcer’s interface

to Mic 1 & Aux 1 on the announcer’s plate.

Figure 16: Mixer Connections

Setup & Operation

10

Powering On

Open the rear rack door to nd the power cord in the lower-left corner (Figure 17). Route

the plug down through the hole in the bottom of the rack and out of the knockout/strain

relief. Connect the power cord into a standard 120V grounded outlet.

Figure 17: Power Cord & Strain Relief

Turn the SOUND SYSTEM key switch (Figure 18) to the ON (vertical) position.

Note: Keep keys in a safe location to prevent theft/tampering of rack equipment!

Figure 18: Power Key Switch

Before continuing, be sure to also power on the speaker cabinet(s)�

Mixer Operation

Basic startup instructions are described below. For more

information about audio mixer operation, refer to the

Yamaha Digital Mixing Console TF Series Reference

Manual.

1� Under USER DEFINED KEYS, press the button labeled

“B” (Figure 19).

Note: Custom keys (presets) may have been set up during training. Press the desired

key as needed for a specic application. The creation of additional presets is

recommended for advanced users only.

2� Ensure all source equipment is turned on and operational (refer to the appropriate

sections of this manual and/or manufacturers’ manuals).

Figure 19: User Dened Keys

Setup & Operation

11

3� Ensure the ON buttons for the channels in use and for the STEREO output are

illuminated; also verify no CUE buttons are illuminated (Figure 20).

4� Bring faders up slowly and listen for the signal (Figure 21).

5� The signal should be visible on the output meter (Figure 22):

• The amber LEDs indicate that the level is near clip.

• The red LEDs indicate that the signal has reached the digital limit.

REMEMBER: Bad input = bad output. No adjustment on the mixer can make a poor

source sound better. For best results, be sure to use high-quality audio les from your MP3

player or laptop, and set the device to near full volume.

Whenever red LEDs are illuminated on the mixer, this is generally a sign that input settings

need to be lowered. For example, if red LEDs are lit in the output meter or PEAK LEDs are

lit, the channel gain and/or fader needs to be lowered. If lowering the fader does not

stop the PEAK LED from illuminating, the gain must be lowered. PROLONGED OVERLOAD

SIGNALS WILL DAMAGE THE AUDIO SYSTEM!

Powering Off

1� Under USER DEFINED KEYS, press the button labeled “A” (Figure 19).

2� Turn the SOUND SYSTEM key switch to the OFF (horizontal) position.

3� If the system will not be used for some time, unplug the power cord.

4� Place all accessories back in the appropriate slots of the storage drawers to keep

them safe and organized.

5� Power off the speaker cabinet(s).

Figure 20: Channel Buttons Figure 21: Channel Faders Figure 22: Output Meter

Setup & Operation

12

Wireless Mic System Operation

Basic instructions are described below. For more information about wireless mic system

operation, refer to the Shure QLX-D Wireless System User Guide.

Wireless Receiver

PowerIR Window

a

e

b c

dg

fh

Power

ON/OFF

Power

ON/OFF

IR Window

Figure 23: Wireless Receiver LCD & Controls

The unit displays the following information (Figure 23):

a� Transmitter Battery Life

b� TV Channel

c� Frequency

d� Group Number

e� Channel Number

f� RF Signal Strength

g� Transmitted Audio Level

h� Gain Level

Single Receiver

1� Ensure all transmitters are powered off� Press the power button to turn on the receiver

if it is not already on.

2� Press menu until “scan” displays on the LCD.

3� Press enter to start frequency scan. When scan is complete, Group and Channel will

display on the LCD.

Network Receivers

1� Ensure all transmitters are powered off� Turn on all receivers and wait one minute to

allow time to connect to the network.

2� Press menu on one receiver until group number ashes.

3� Use the arrow buttons to select a group to scan.

4� Press enter, wait for channel, and then press enter again

5� Press menu until “network scan” displays on the LCD.

6� Press enter twice to deploy channels to other receivers.

Note: Perform a scan on all of the wireless units just minutes before the game! If a scan

is performed too far ahead of time, frequencies set up by the media later on may

interfere with previously congured wireless microphone settings.

Setup & Operation

13

Wireless Mic & Bodypack Operation

PowerIR Window

a

e

b c

dg

fh

Power

ON/OFF

Power

ON/OFF

IR Window

Figure 24: Wireless Mic & Bodypack Controls

1� Open the battery cover. Insert new or fully-charged AA batteries prior to each use,

and always have spares on hand.

2� Power on the transmitter device (Figure 24).

3� Hold the transmitter device up close to one receiver in the rack, ensuring the infrared

(IR) windows are aligned.

4� Press sync on the receiver; “good” will display if sync was successful.

5� Repeat steps 1–4 to pair another transmitter device with an additional receiver (if

present).

Note: Plug the referee mute switch into the jack on top of the bodypack unit and

plug headphones/lapel mic into the referee mute switch.

Verify Reception: With a transmitter and the receiver both turned on and having

matching GROUP and Channel numbers, the RF meter on the receiver should be

indicating signal. Speak into the microphone and the TX AUDIO meter should indicate

signal presence.

Additional Tips:

• Perform a group and channel scan to obtain the best available channel for

microphones.

• Check that battery levels are adequate to prevent wireless equipment from

powering off during use.

• Program one microphone per receiver; multiple microphones on the same channel

will cause interference and microphones will drop out.

• Always use quality batteries to prevent battery leaks that can corrode and shorten

the life of the equipment.

Setup & Operation

14

Microphone Best Practices

• Keep handheld microphones 4-6" (102-152 mm) from the mouth (about the width

of a hand). “P-pops” are loud sounds created by the release of breath when

saying letters like “p” or “b”. To avoid P-pops, keep handheld microphones below

the mouth, angled toward the nose at a 45° angle. Do not point the front of the

microphone straight at the mouth.

• Position headset microphones as close to the mouth as comfortable.

• The softer or louder the speaker’s voice, move the microphone closer or further

away, respectively.

• Never hit or intentionally blow into a microphone as it could quite easily be

damaged.

• The referee bodypack kit includes both head-worn and lapel microphones. In

general it is recommended to use the headset mic for best results. If the lapel mic is

desired, clip it onto a lapel, as close to the center of the chest as possible.

• Head-worn: Best choice for feedback rejection; capable of more gain before

feedback since microphone can be positioned close to the mouth. Placement

on head should be taken into consideration; mic boom should be on same side

of point source sound system for proper cancellation. More susceptible to wind

noise than omnidirectional microphones.

• Omnidirectional Lapel: Susceptible to feedback from sound system; least

affected by wind noise

• Cardioid Lapel: Better feedback rejection versus omnidirectional lapel, but more

wind noise. For maximum wind noise reduction, use both the snap-on windscreen

AND the furry windjammer on the lapel mic as shown in Figure 25.

Figure 25: Proper Ref Mic Setup

Setup & Operation

15

Feedback

Feedback is a high-pitched noise caused when the sound through a speaker is picked

up again by the microphone. The SSR-300 rack is equipped with a Feedback Reducer,

but if there is still feedback in the system, it can be removed/reduced with the tips below:

• Practice proper microphone placement. The mic should be as close as possible

to the mouth. Use a headset whenever possible; lapel mics are more prone to

feedback.

• Practice proper setup of the gain structure throughout the system. Start from the

source (wireless mic system) and ensure all levels are good.

• Make sure to use the windscreens on the microphones.

• Try a different mic. Cardioid mics will have a higher gain before feedback than

omnidirectional mics. However, Cardioid mics will have more wind noise versus

omnidirectional. When it comes to choosing between wind noise or feedback, it’s the

lesser of two evils to listen to wind noise.

• Be aware of areas prone to feedback, such as from the 20 yard line and in.

Communicate to the referee that they shouldn’t be making announced calls past a

certain point on the eld.

For additional recommendations for reducing wireless microphone dropouts and

feedback, refer to the Wireless Mic Best Practices (DD3871886), available online at

www.daktronics.com/manuals.

Setup & Operation

16

Personal Monitor System Operation

Basic instructions are described below and shown in Figure 26. For more information, refer

to the Shure PSM900 Personal Wireless Monitor System User Guide.

1� Flip the transmitter POWER switch to ON if it is not already on; ensure the RF switch to

the left of it is OFF at this time.

2� Power on the handheld receiver using the volume knob.

3� Attach the antenna and earphones to the top of the handheld receiver.

4� Flip open the battery cover to expose the control buttons. Press SCAN and the display

will show “SYNC NOW”.

Note: Insert new or fully-charged batteries prior to each use, and always have

spares on hand.

5� Hold the bodypack up to the transmitter with the sync IR windows facing each other,

and press the SYNC button on the transmitter. The display will show “SYNC SUCCESS”

when nished.

6� Flip the transmitter RF switch to ON. The blue LED on the receiver should illuminate to

indicate that it is detecting the transmitter.

1

5 6

3

2

4

Figure 26: Optional Personal Stereo Monitor System

Daktronics SPORTSOUND SSR-300 GEN II User manual

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