TS15S - Subwoofer ALTO - Free user manual and instructions

Product Type	Powered subwoofer
Brand	Alto Professional
Model	TS15S
Speaker	15 inches
Power	2000 W peak
Frequency Response	35 Hz – 120 Hz
Audio Inputs	2 x XLR/TRS (L and R)
Audio Outputs	2 x XLR Thru (L and R)
Power Supply	Mains (power cable included)
Fuse	Replaceable, rating indicated below power input
Power Switch	Yes, with LED indicator
Volume Control	Rotary potentiometer
LED Indicator	Green (signal present), Red (limiter/protection)
Speaker Use Selector	Live, DJ, EQ Off
Phase Alignment	0°, 90°, 180°, 270°
Pole Mount	Yes, threaded pole socket
Caster Mounting	Possible (M6 x 1.0 mm sockets, casters not included)
Enclosure Material	Wood with coating
Protective Grille	Removable
Maintenance and Cleaning	Clean with a dry cloth, do not use solvents
Safety	Do not expose to rain or moisture; unplug before maintenance
Weight	Approximately 30 kg
Dimensions (W x H x D)	Approximately 50 x 45 x 50 cm

Frequently Asked Questions - TS15S ALTO

How do I connect the TS15S subwoofer to a mixing console?

Use XLR cables to connect the left and right outputs of the console to inputs 1 and 2 of the subwoofer. Then, connect the Thru outputs of the subwoofer to the main speakers.

What do the different positions of the Speaker Use selector mean?

The Speaker Use selector offers three modes: Live (slightly attenuated bass for kick drum and bass guitar), DJ (boosted low frequencies), and EQ Off (flat response).

How do I adjust the phase alignment on the TS15S?

Press the phase alignment button to toggle between 0°, 90°, 180°, and 270°. This compensates for low-frequency cancellation due to speaker placement.

What should I do if the LED stays red continuously?

A continuous red light indicates that the output limiter/protection is activated. Reduce the volume of the audio source until the light turns green.

Can I mount speakers on top of the TS15S?

Yes, the TS15S has a threaded pole socket. Ensure that the pole and the mounted speaker comply with weight and safety limits.

How do I replace the fuse of the subwoofer?

Turn off and unplug the unit. Lift the tab of the fuse compartment and replace it with a fuse of the same rating (indicated under the power input). Do not use a different rating fuse.

Can I add casters to the TS15S?

Yes, the TS15S has M6 x 1.0 mm threaded sockets to attach 76 mm casters with mounting plate. Use appropriate screws (not included with the subwoofer).

What cables are needed to connect the TS15S?

Use XLR cables for audio connections. TS/TRS cables are also compatible with the inputs. The power cable is included.

How do I clean the subwoofer?

Unplug the unit and clean it with a soft, dry cloth. Do not use solvents, alcohol, or abrasive products.

What safety precautions are important?

Do not remove the grille while the unit is plugged in. Place the subwoofer on a stable, flat surface. Avoid exposure to rain or moisture. Follow local electrical codes.

USER MANUAL TS15S ALTO

User Guide (English)

Introduction

Box Contents

TS Series Subwoofer

Power Cable

Registration Card

User Guide

Safety & Warranty Manual

Support

For this User Guide, the latest information about the product (system requirements, compatibility information, etc.), or product registration, visit altoprofessional.com.

For additional product support, visit altoprofessional.com/support.

Important Safety Precautions

Please note: Alto Professional and inMusic are not responsible for the use of its products or the misuse of this information for any purpose. Alto Professional and inMusic are not responsible for the misuse of its products caused by avoiding compliance with inspection and maintenance procedures. If choosing to install and use casters, you are responsible for the safe and proper installation. Alto Professional and inMusic take no responsibility if casters are used. Please also refer to the included safety and warranty manual for more information.

Caution: To reduce the risk of electric shock, do not connect the subwoofer to a power outlet while the grille is removed.

Loudspeaker Mounting

Always install subwoofoers in accordance with applicable electrical and building codes.
- When using a pole in the pole cup on top of the subwoofer cabinet to mount a loudspeaker, ensure the pole is rated to support the loudspeaker's weight. Also, observe all safety precautions specified by the manufacturer.
- Do not mount multiple loudspeakers on the same pole.
- Always verify that the subwoofer is on a flat, level, and stable surface that can support the weight of the subwoofer and any mounted loudspeaker and mounting equipment.
- Inspect the subwoofer, pole, and associated hardware before each use and do not use equipment with worn, damaged, or missing parts.
Always be cautious in windy, outdoor conditions. Do not attach banners or similar items to any part of a loudspeaker system. Such attachments could act as a sail and topple the system.
Unless you are confident that you can handle the subwoofer's weight, ask another person to help you with any setup needs related to the subwoofer and any mounted speakers and related accessories.
- Make sure your cables are out of the way of performers, production crew, and audience so they will not trip over them, pulling the loudspeaker off the stand or pole.

(Optional) Attaching Casters

In order to improve the experience of transporting our subwooers, the TS15S and TS18S come with inserts (M6 x 1.0 mm) for easily attaching casters to the rear of the cabinet. If casters are desired, please purchase 3-inch, 76 mm x 44 mm (3.00" x 1.73") mounting pattern, 150 lbs.-rated, swivel or non-swivel casters. Please follow all installation instructions from the caster manufacturer when installing.

Note: Do not reuse the screws provided with the TS Sub to install the casters. Please see the caster manufacturer's guidelines for selecting appropriate screws for M6 x 1.0 mm inserts.

Sound Level

Permanent hearing loss may be caused by exposure to extremely high noise levels. The U.S. Occupational Safety and Health Administration (OSHA) has specified permissible exposures to certain noise levels. According to OSHA, exposure to high sound pressure levels (SPL) in excess of these limits may result in hearing loss. When using equipment capable of generating high SPL, use hearing protection while such equipment is under operation.

Hours per day	SPL (dB)	Example
8	90	Small
6	92	Train
4	95	Subway
3	97	High level desktop monitors
2	100	Classical music concert
1.5	102	Riveting
1	105	Machine
0.5	110	Airport
0.25 or less	115	Rock concert

Quick Start

Items not listed under Introduction > Box Contents are sold separately.

Example A: 1 subwoofer & 2 loudspeakers

Using XLR cables, connect the left and right outputs of your mixer to the inputs of your subwoofer, and then connect the Thru Outputs of the subwoofer to the input of each loudspeaker.

Example B: 2 subwoofoers & 2 loudspeakers

Using XLR cables, connect the left and right outputs of your mixer to Input 1 of each subwoofer, and then connect the left Thru Output of each subwoofer to the input of each loudspeaker.

Features

Rear Panel

1. Power Input: Connect the included power cable to this input and connect the other end of the cable to a power source. Make sure the Power Switch is set to off when plugging and unplugging the cable.
2. Fuse: If the unit's fuse is broken, power off the subwoofer and disconnect it from the power outlet, and then lift this tab to replace the fuse. Replace it with a fuse that has the appropriate rating (printed under the unit's power cable input). Using a fuse with an incorrect rating can damage the unit and/or fuse.
3. Power Switch: Turns the subwoofer on/off. Make sure the Volume knob is set to - before turning it on.
4. Thru Output: Use standard XLR cables to connect these outputs to a loudspeaker. Input 1's signal is sent to the left Thru Out and Input 2's signal is sent to the right Thru Out.

1. Inputs: Use a standard XLR, TS, or TRS cable (not included) to connect your sound source to these inputs. 1 is the left input, and 2 is the right input.
2. Volume: Turn this knob to adjust the subwoofer's output volume.
3. Signal/Limit LED: This LED lights up green when an audio signal is sent to the subwoofer—it flashes at lower levels and lights solidly at higher levels. The LED lights up red when output limit/protection is active—if the LED is lit red continuously, reduce the volume of your audio source.
4. Speaker Use Button: Press this button to select the front-end EQ applied to the signal using these options: Live (slightly less extreme low-frequency with enhanced 60 Hz - 80 Hz for kick drum and bass guitar emphasis), DJ (enhanced low-frequency bump) or EQ Off (flat response).

Note: If you are using TS4 mains, please match the Speaker Use settings between the TS4 top and TS4 Sub for optimal performance. If you are using TS4 mains with a custom EQ, please choose whichever TS Subs Speaker Use setting sounds best with the custom EQ that you are using.

1. Phase Alignment Button: Press this button to adjust the phase of the output by 90, 180, or 270 degrees to compensate for low-frequency cancellation.

Technical Specifications

TS12S

Output Power	2500 W peak @ 4 Ω
Transducer Low	12" (305 mm) woofer; 3" (76.2 mm) high-temperature voice coil
Frequency Response	44 Hz – 140 Hz (-3 dB)
Frequency Range	38 Hz – 152 Hz (-10 dB)
Maximum SPL	130 dB (@ 1 m)
Connections	(2) XLR+1/4" (6.35 mm) inputs; (2) XLR outputs; (1) IEC power cable input
External Controls	Volume control, signal/clip limiter with LED, speaker use button, proximity button, power switch with LED
Electronic Protections	Electronic clip, thermal and transducer overdrive protection
Enclosure	Internally braced MDF cabinet; 36 mm mounting pole socket on top panel
Power	Connection: Standard IEC cable Input Voltage: 100-120, 50/60 Hz; 220-240 VAC 50/60 Hz Consumption: 1600W Fuse: 100-120V, T15AL AC250V; 220-240V, T8AL AC250V
Dimensions (height x width x depth)	17.9" x 18.1" x 19.9" / 454.7 x 459.7 x 505.5 mm
Weight	57.1 lbs. / 25.9 kg

TS15S

Output Power	2500 W peak @ 4 Ω
Transducer Low	15" (381 mm) woofer; 3" (76.2 mm) high-temperature voice coil
Frequency Response	36 Hz – 110 Hz (-3 dB)
Frequency Range	31 Hz – 123 Hz (-10 dB)
Maximum SPL	132 dB (@ 1 m)
Connections	(2) XLR+1/4" (6.35 mm) inputs; (2) XLR outputs; (1) IEC power cable input
External Controls	Volume control, signal/clip limiter with LED, speaker use button, proximity button, power switch with LED
Electronic Protections	Electronic clip, thermal and transducer overdrive protection
Enclosure	Internally braced MDF cabinet; 36 mm mounting pole socket on top panel Caster Insert Thread Gauge: M6 x 1.00 mm
Power	Connection: Standard IEC cable Input Voltage: 100-120, 50/60 Hz; 220-240 VAC 50/60 Hz Consumption: 1600W Fuse: 100-120V, T15AL AC250V; 220-240V, T8AL AC250V
Dimensions (height x width x depth)	21.3" x 20.6" x 24.7" / 541 x 523 x 627 mm
Weight	87.1 lbs. / 39.51 kg

TS18S

Output Power	2500 W peak @ 4 Ω
Transducer Low	18" (457 mm) woofer; 3" (76.2 mm) high-temperature voice coil
Frequency Response	29 Hz – 100 Hz (-3 dB)
Frequency Range	27 Hz – 111 Hz (-10 dB)
Maximum SPL	137 dB (@ 1 m)
Connections	(2) XLR+1/4" (6.35 mm) inputs; (2) XLR outputs; (1) IEC power cable input
External Controls	Volume control, signal/clip limiter with LED, speaker use button, proximity button, power switch with LED
Electronic Protections	Electronic clip, thermal and transducer overdrive protection
Enclosure	Internally braced MDF cabinet; 36 mm mounting pole socket on top panel Caster Insert Thread Gauge: M6 x 1.00 mm
Power	Connection: Standard IEC cable Input Voltage: 100-120, 50/60 Hz; 220-240 VAC 50/60 Hz Consumption: 1600W Fuse: 100-120V, T15AL AC250V; 220-240V, T8AL AC250V
Dimensions (height x width x depth)	26.7" x 20.9" x 24.7" / 678.2 x 530.9 x 627.4 mm
Weight	93.0 lbs. / 42.2 kg

Trademarks & Licenses

Alto Professional is a trademark of inMusic Brands, Inc., registered in the U.S. and other countries. All other product or company names are trademarks or registered trademarks of their respective owners.

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