TS18S - Subwoofer ALTO - Free user manual and instructions

Brand	Alto Professional
Model	TS18S
Category	Subwoofer
Subwoofer Type	Powered (active)
Power	Power input with fuse, on/off switch
Audio Inputs	2 combo XLR/TRS/TS inputs (left and right)
Audio Outputs	2 XLR Thru outputs (left and right)
Volume Control	Volume knob (from -∞ to full)
Clipping Indicator	Green LED (signal present) / red LED (limiter/protection active)
Speaker Use Button	Live, DJ, or EQ Off (preset EQ)
Phase Alignment Button	0°, 90°, 180°, 270° (phase compensation)
Replaceable Fuse	Yes, rating indicated under the power input
Pole Mount	Pole socket (threaded base) for speaker mounting
Optional Casters	M6 threaded bases at the rear for casters (not included)
Box Contents	Subwoofer, power cable, registration card, user guide, safety instructions
Safety Instructions	Do not expose to rain, use on stable surface, keep cables away, hearing protection
Warranty	Refer to the included safety instructions and warranty information guide

Frequently Asked Questions - TS18S ALTO

How to connect the TS18S 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 to do if the clipping indicator turns red?

If the red LED lights up, it means the output limiter or protection is activated. Lower the volume of the audio source until the LED turns green again.

How to use the Speaker Use modes (Live, DJ, EQ Off)?

Press the Speaker Use button to choose between Live (less low bass to emphasize kick drum/bass), DJ (boosted bass) or EQ Off (flat response). Use the same setting as your main speakers if possible.

What is the phase alignment button for?

It allows adjusting the output phase in 90° steps (0°, 90°, 180°, 270°) to compensate for low-frequency cancellation due to the subwoofer's position relative to the speakers.

Can I mount a speaker on the TS18S subwoofer?

Yes, the subwoofer is equipped with a pole socket. Ensure that the pole can support the weight of the speaker and that the subwoofer is placed on a stable surface.

How to install casters on the subwoofer?

The TS18S has M6 threaded bases at the rear. Purchase 76 mm casters with a 76x44 mm mounting plate supporting 68 kg. Use appropriate screws (M6) and follow the caster manufacturer's instructions.

What types of audio cables can I use with the inputs?

The inputs accept XLR, TS (unbalanced) or TRS (balanced) cables. Use good quality cables to minimize noise.

What to do if the fuse is damaged?

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

How to protect my hearing during use?

Exposure to high sound levels can cause hearing loss. Follow OSHA recommended exposure times (e.g., 8 hours at 90 dB). Use hearing protection if necessary.

Where to find the user guide and warranty information?

The user guide is included in the box. You can also download the manual and warranty information from altoprofessional.com.

USER MANUAL TS18S ALTO

ALTO PROFESSIONAL

TS12S TS15S TS18S

User Guide

English (2 - 5)

Guía del usuario

Español (6 - 9)

Guide d'utilisation

Français (10 - 13)

Guida per l'uso

Italiano (14 - 17)

Benutzerhandbuch

Deutsch (18 - 21)

Appendix

English (22 - 23)

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 subwoofers 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 subwoofers, 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.

graph TD
    A["Loudspeaker"] --> B["Subwoofer"]
    B --> C["Mixer"]
    C --> D["Power"]
    B --> E["ALTO"]
    E --> F["TS125"]
    F --> G["Power"]
    B --> H["ALTO"]
    H --> I["WE1202"]
    I --> J["Power"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#ffc,stroke:#333
    style F fill:#cfc,stroke:#333
    style G fill:#fcc,stroke:#333
    style H fill:#ffc,stroke:#333
    style I fill:#cfc,stroke:#333
    style J fill:#fcc,stroke:#333

Example B: 2 subwoofers & 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.

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.
5. 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.
6. Volume: Turn this knob to adjust the subwoofer's output volume.
7. 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.
8. 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.

ALTO PROFESSIONAL TS125 2500-WATT 12" POWERED SUBWOOPER 8 9 6 7 5 4 3 2 1 2 ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON

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 cableInput Voltage: 100-120, 50/60 Hz; 220-240 VAC 50/60 HzConsumption: 1600WFuse: 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 panelCaster Insert Thread Gauge: M6 x 1.00 mm
Power	Connection: Standard IEC cableInput Voltage: 100-120, 50/60 Hz; 220-240 VAC 50/60 HzConsumption: 1600WFuse: 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 panelCaster Insert Thread Gauge: M6 x 1.00 mm
Power	Connection: Standard IEC cableInput Voltage: 100-120, 50/60 Hz; 220-240 VAC 50/60 HzConsumption: 1600WFuse: 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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