What is the peak power rating of the Alto TS15S?

The Alto TS15S features a peak power rating of 2500 watts, making it the most powerful subwoofer currently offered by Alto Professional.

What size is the driver in the TS15S?

The unit is equipped with a 15-inch driver that includes a 3-inch high-temperature voice coil for improved heat dissipation and durability.

What type of amplifier does the TS15S use?

It uses a high-efficiency Class D amplifier, which provides high output while keeping the weight manageable compared to traditional Class AB designs.

What material is the cabinet made from?

The cabinet is constructed from rugged, internally-braced MDF (medium-density fibreboard) to provide a solid acoustic platform.

How is the cabinet finished to prevent damage?

The TS15S features a mark-resistant splatter-spray finish designed to withstand the scrapes and bumps associated with regular transport.

Does the TS15S have built-in protection circuits?

Yes, it includes electronic clip, thermal, and transducer overdrive protection to safeguard the internal components during intense use.

Can I adjust the phase of the subwoofer?

Yes, the TS15S includes a phase alignment selector switch to ensure the sub and top speakers are perfectly synchronized for optimal bass response.

Are there different sound modes available?

The subwoofer offers user-selectable EQ tunings, allowing the operator to fine-tune the low-end character for different venues and music styles.

Is the cabinet ported or sealed?

The TS15S uses a front-ported cabinet design, which helps improve low-frequency efficiency and air movement.

What is the typical price range for this model?

The Alto Professional TS15S typically retails for approximately £499, though prices may vary by retailer.

How does the TS15S handle heat?

The unit utilizes a high-temperature voice coil and built-in thermal protection to manage heat during long periods of high-volume operation.

What type of applications is this subwoofer best suited for?

It is designed for live sound reinforcement, DJs, and bands who require a powerful yet portable 15-inch subwoofer to provide 'thunderous' bass.

Gear article

Alto Professional TS15S 15" Active PA Subwoofer

The Alto Professional TS15S is a 2500-watt active PA subwoofer featuring a 15-inch driver and a high-efficiency Class D amplifier. Housed in a rugged, internally-braced MDF cabinet, it is designed to provide high-output low-end reinforcement for live sound applications.

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Overview

The Alto Professional TS15S is a high-power active subwoofer designed to complement full-range PA speakers by extending the low-frequency response of a sound system. It represents the most powerful subwoofer in the Alto Professional catalogue, offering 2500 watts of peak power. The unit is built around a 15-inch driver equipped with a 3-inch high-temperature voice coil, intended to handle high volumes without mechanical failure.

Design and Construction

Durability is a central feature of the TS15S design. The cabinet is constructed from medium-density fibreboard (MDF) and features internal bracing to reduce unwanted resonances and vibrations. The exterior is finished with a mark-resistant splatter-spray coating, protecting it from the rigours of transport. The front-ported design assists in low-frequency extension, while the physical interface includes integrated handles for easier handling during setup and teardown.

Electronics and Protection

The TS15S utilizes a high-efficiency Class D amplifier to provide clean, consistent power. To ensure longevity during demanding performances, the subwoofer includes a suite of electronic protections:

Electronic clip protection
Thermal protection
Transducer overdrive protection

These systems work in tandem to prevent damage to the driver and amplifier when the unit is pushed to its maximum operating limits.

Acoustic Tuning

To accommodate different acoustic environments and various full-range companion speakers, the TS15S provides user-selectable EQ tunings. These presets allow for quick adjustments to the frequency response. Additionally, a phase alignment selector switch is included to ensure that the subwoofer stays in phase with the main tops, preventing frequency cancellation at the crossover point.

Market Comparison

Within the live sound market, the TS15S occupies a mid-tier position. While more compact than 18-inch models like the QSC KLA181, its 2500W output allows it to compete with larger units in terms of raw power. It is frequently paired with 15-inch full-range speakers like the RCF ART 735-A MK5 or the dB Technologies B-Hype 15. For smaller installations, users might consider alternatives such as the AVCOM 8" Active Subwoofer, though the TS15S offers significantly higher SPL and low-end extension.

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Frequently asked questions

What is the peak power rating of the Alto TS15S?: The Alto TS15S features a peak power rating of 2500 watts, making it the most powerful subwoofer currently offered by Alto Professional.
What size is the driver in the TS15S?: The unit is equipped with a 15-inch driver that includes a 3-inch high-temperature voice coil for improved heat dissipation and durability.
What type of amplifier does the TS15S use?: It uses a high-efficiency Class D amplifier, which provides high output while keeping the weight manageable compared to traditional Class AB designs.
What material is the cabinet made from?: The cabinet is constructed from rugged, internally-braced MDF (medium-density fibreboard) to provide a solid acoustic platform.
How is the cabinet finished to prevent damage?: The TS15S features a mark-resistant splatter-spray finish designed to withstand the scrapes and bumps associated with regular transport.
Does the TS15S have built-in protection circuits?: Yes, it includes electronic clip, thermal, and transducer overdrive protection to safeguard the internal components during intense use.
Can I adjust the phase of the subwoofer?: Yes, the TS15S includes a phase alignment selector switch to ensure the sub and top speakers are perfectly synchronized for optimal bass response.
Are there different sound modes available?: The subwoofer offers user-selectable EQ tunings, allowing the operator to fine-tune the low-end character for different venues and music styles.
Is the cabinet ported or sealed?: The TS15S uses a front-ported cabinet design, which helps improve low-frequency efficiency and air movement.
What is the typical price range for this model?: The Alto Professional TS15S typically retails for approximately £499, though prices may vary by retailer.
How does the TS15S handle heat?: The unit utilizes a high-temperature voice coil and built-in thermal protection to manage heat during long periods of high-volume operation.
What type of applications is this subwoofer best suited for?: It is designed for live sound reinforcement, DJs, and bands who require a powerful yet portable 15-inch subwoofer to provide 'thunderous' bass.