ALA15T - Speaker Atlas Sound - Free user manual and instructions

Product Type	Professional Loudspeaker
Model	ALA15T
Brand	Atlas Sound
Transformer Power (70.7V)	60W with selectable taps: 7.5, 15, 30, 60W
Low Impedance Operation	8Ω or 6Ω (with jumper removed)
Input Connectors	Barrier terminal strip and NL4 Speakon connector
Mounting	Wall-mounted with adjustable wall brackets (short, medium, long)
Horizontal Adjustment	Yes, via sliding mount blocks and bolts
Angle Adjustment	Yes, using speaker bracket length and wall bracket spacing (see manual tables)
Safety Precautions	Risk of hearing damage; secure mounting required; qualified installer needed for overhead installation
Compliance	Must adhere to local building codes and safety standards
Included Accessories	Wall brackets, sliding mount blocks, bolts and washers
Tools Required	Level, appropriate wall anchors, screwdriver, wrench
Wiring	Run from amplifier to speaker; ensure amplifier is off during connection

Frequently Asked Questions - ALA15T Atlas Sound

How do I connect the ALA15T speaker to an amplifier?

Ensure the amplifier is powered off. Use the barrier terminal strip for 70.7V or low impedance connections. For low impedance (8Ω or 6Ω), remove the jumper on the terminal block. Alternatively, use the NL4 Speakon connector for low impedance. Select the appropriate power tap (7.5, 15, 30, or 60W) for 70.7V systems.

What are the available power taps on the transformer?

The built-in 60W 70.7V transformer offers taps at 7.5, 15, 30, and 60 watts. Select the tap that matches your system requirements.

Can I use the ALA15T as a low impedance speaker?

Yes. Remove the jumper on the barrier terminal block to enable low impedance operation at 8Ω or 6Ω. You can also use the NL4 Speakon connector for direct low impedance connection.

What safety precautions should I follow during installation?

Always turn off the amplifier before making connections. The speaker can produce high sound pressure levels that may cause permanent hearing damage; avoid prolonged exposure. Overhead mounting must be performed by qualified installers following local building codes.

How do I mount the speaker to a wall?

Attach the wall bracket to the wall using appropriate anchors (not included). Use a level to ensure it is straight. Attach the speaker bracket to the sliding mount block, then connect to the wall bracket. Adjust horizontal position and tighten bolts. Refer to the manual for angle adjustment tables.

What is the difference between the short, medium, and long speaker brackets?

The bracket lengths determine the tilt angle of the speaker. Use the short bracket for parallel mounting, medium for lower tilt angles, and long for higher tilt angles. See the manual for exact angle vs. bracket spacing calculations.

Is the ALA15T suitable for outdoor use?

The manual does not specify outdoor rating. It is designed for indoor commercial/industrial use. For outdoor installation, consult Atlas Sound technical support.

What hardware is not included with the speaker?

The wall anchors and screws for attaching the wall bracket to the wall are not included. You must provide appropriate hardware for your wall type.

How do I adjust the horizontal position of the speaker after mounting?

Loosen the bolts on the sliding mount blocks, slide the speaker to the desired position, then retighten the bolts. Ensure the assembly is secure.

What should I do if I need further assistance?

Contact Atlas Sound Tech Support at 800-876-3333. Keep the manual for future reference.

USER MANUAL ALA15T Atlas Sound

Installation Instructions

Safety Instructions

Please read carefully before installing or operating.

• Read all instructions carefully
• Heed all warnings
  • Assure that the speaker is securely mounted
  • Always assure amplifier power is off before making any connections
• Keep instructions for future reference

- Should any questions arise after reading this document, please call Atlas Sound Tech Support at 800-876-3333

Hearing Damage

CAUTION: All professional loudspeaker systems are capable of generating very high sound pressure levels. Use care with placement and operation to avoid exposure to excessive levels that can cause permanent hearing damage.

Suspension and Mounting

Installing speaker systems requires training and expertise. Improper speaker installation may result in injury, death, equipment damage, and legal liability. Installation must be carried out by fully qualified installers, in accordance with all required safety codes and standards at the place of installation.

Legal requirements for overhead installation vary by municipality, please consult the Building Inspector office before installing any product and thoroughly check any laws and bylaws prior to installation. Installers that lack the skills, training, and proper ancillary equipment to install a speaker system should not attempt to do so.

Installation

1. Run the wiring from the power amplifier to the location desired for mounting the ALA Series speaker.
2. Attach the wall bracket to the wall. Use a level to be certain that the wall bracket is straight. Secure the wall bracket to the wall. Be sure to use the appropriate wall anchors when attaching the bracket. Use all four screw holes for maximum integrity and safety.
   Note: Hardware for attaching the wall bracket to the wall is not included.

Technical line drawing of a mechanical bracket assembly with bolt holes (no text or symbols)

Fig. 1

1. Attach the upper wall bracket as required.

A. The location of the upper wall bracket will vary according to the angle that the speaker will be used.
B. If the speaker will be parallel to the wall, the upper wall bracket can be located 25" to 38" center to center. Two short speaker brackets, one on the top and one on the bottom will be used. Refer to figure 2a.
C. For an angled installation, please refer to the tables and figures below to determine the center to center distance for the wall brackets.
D. For higher angles of tilt, use the long speaker bracket. Refer to figure and table 2b.
E. For lower angles of tilt, use the medium speaker bracket. Refer to figure and table 2c.

Fig. 2a

ALA15T / ALA20T
ANGLE C-C IN
26.06° 19'
24.67° 20'
23.42° 21'
22.30° 22'
21.28° 23'
20.35° 24'
19.50° 25'
18.72° 26'
18.01° 27'
17.34° 28'
16.73° 29'
16.15° 30'
15.62° 31'
15.12° 32'
14.65° 33'
14.21° 34'
13.80° 35'
13.41° 36'
13.04° 37'
12.69° 38'
12.36° 39'
12.04° 40'
11.75° 41'
11.46° 42'
11.19° 43'
10.93°	44'
10.69°	45'
10.45°	46'
10.23°	47'
10.01°	48'

Fig. 2c
Table. 2b

1. Attach the short speaker bracket to the lower sliding mount block.

A. Position the short speaker bracket over the lower sliding mount block as shown in Fig. 3.
B. Insert the 100mm M8 bolt through the short speaker bracket and the lower sliding mount block. Be sure to include the plain washers and one lock washer as shown.

Note: For angled installation, skip step 4C and proceed to step 4D.

Technical line drawing of two mechanical components with no visible text or symbols

Fig. 3 (Sliding Mount Block shown not attached to speaker for clarity)

C. If the speaker will be parallel to the wall, repeat steps 4A and 4B for the upper sliding mount block.
D. Position the medium or long speaker bracket over the upper sliding mount block as shown in Fig. 4a or Fig. 4b.
E. Insert the 100mm M8 bolt through the speaker bracket and the sliding mount block. Be sure to include the plain washers and one lock washer as shown.

Technical line drawings of mechanical brackets and mounting fixtures (no text or symbols)

Fig. 4a and 4b (Sliding Mount Block shown not attached to speaker for clarity)

1. Attach the speaker bracket to the wall bracket.

A. Insert the 20mm M8 bolt through the short speaker bracket and the lower wall bracket as shown in Fig. 5. Be sure to include the plain washers and one lock washer as shown.

Technical line drawing of a mechanical assembly with mounting bracket and housing (no text or symbols)

Fig. 5 (Sliding Mount Block shown not attached to speaker for clarity)

B. Insert the 20mm M8 bolt through the medium or long speaker bracket and the upper wall bracket as shown in Fig. 6a and 6b. Be sure to include the plain washers and one lock washer as shown.

C. Adjust horizontal position of the speaker and torque all bolts sufficiently to hold position.

Technical line drawing of three mechanical assembly components with mounting brackets and mounting holes (no text or symbols)

Fig. 6a and 6b (Sliding Mount Block shown not attached to speaker for clarity)

1. Establish electrical connection. All models include a built-in, high efficiency 60 Watt 70.7V transformer with 7.5, 15, 30, and 60 Watt taps as shown in Fig. 7.

Note: A removable jumper and additional pole on the terminal block is included for transformer operation. The jumper must be removed for low impedance (8Ω or 6Ω) direct coupled operation.

Connections are provided on the terminal for both transformer and low impedance connection. An NL4 Speakon ^ connector is included for low impedance (8Ω or 6Ω) direct coupled operation.

Note: When using the Speakon ^® input connection, the jumper must be removed from the barrier terminal.

Fig. 7

ALA15T Dimensions

ALA20T Dimensions

©2015 Atlas Sound L.P. and Innovative Electronic Designs, LLC. All Rights Reserved. Atlas Sound is a trademark of Atlas Sound L.P. IED is a registered trademark of Innovative Electronic Designs, LLC. All other trademarks are the property of their respective owners. All specs are subject to change without notice. ATS005302 RevB 11/15