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Returnable until 31 Jan 2026
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  • VIDEO
ALTO - TX4 FamilyInMusic Canada ULC
  • ALTO TX18S 900W 18" Subwoofer, DSP-Enhanced Powered PA Speaker with 3" Voice Coil, Superior Bass, Easy Setup
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ALTO TX18S 900W 18" Subwoofer, DSP-Enhanced Powered PA Speaker with 3" Voice Coil, Superior Bass, Easy Setup

2.5 out of 5 stars (2)

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Returnable until 31 Jan 2026
  • For the 2025 holiday season, eligible items purchased between 1 November and 31 December 2025 can be returned until 31 January 2026.
Read full return policy
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About this item

  • Sonic Might for Your PA System - 900W subwoofer with 18-inch high-output woofer, 3-inch voice coil and ultra-efficient Class-D amplifier, extending the low-end frequencies, adding bass to your sound
  • Rock-Solid Sound - Featuring DSP-based EQ and protection, and selectable Low Pass Filters to switch the frequency response and seamlessly integrate with any speaker
  • For DJs and Musicians Alike - Selectable Music/Live voicing modes easily handle deep bass frequencies and project them into any large-scale venue, nightclub, house of worship, or place of business
  • The Anchor of Your Sound - Extended thunderous bass and selectable DSP Low Pass Filter of 80Hz/100Hz/120Hz at 24dB per octave; hook up to powered speakers or DJ setup and shake your crowd every time
  • Optimized for Portability - This active sub comes with convenient side handles and caster threads at the rear of the cabinet for easy transportation even at 87.7 lbs/39.8 kg (casters sold separately)
  • Built to Last - Rugged, front-ported cabinet made from durable, resonant-free fiberboard, with heavy-use splatter-spray finish and full metal grille, integrated 36mm pole socket, overload protection
  • Input Power - TX18S works in countries with 100/120V; 50/60 Hz

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This item: ALTO TX18S 900W 18" Subwoofer, DSP-Enhanced Powered PA Speaker with 3" Voice Coil, Superior Bass, Easy Setup
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Product information

Technical Details

Input voltage ‎120 Volts
Mounting type ‎Floor Standing
Material ‎Wood
Model name ‎TX18S
Speaker type ‎Subwoofer
Special feature ‎DSP Based EQ, Selectable Low Pass Filter, Portable, Durable
Recommended uses for product ‎For Live Performance, For PA systems, For professional audio setup
Compatible devices ‎DJ Mixer, Powered Speakers
Subwoofer diameter ‎18 Inches
Unit count ‎1.0 Count
Surround sound channel configuration ‎1.0
Colour ‎Black
Included components ‎TX18S
Product Dimensions ‎58.5D x 58.5W x 58.5H Centimetres
Item weight ‎37.6 Kilograms
Is waterproof ‎False
Warranty type ‎Limited
Number of Items ‎1
Control method ‎Touch
Speaker size ‎18 Inches
Power source ‎Corded Electric
Manufacturer ‎inMusic Brands Inc.
Model ‎TX18S
Part Number ‎TX18S
Special features ‎DSP Based EQ, Selectable Low Pass Filter, Portable, Durable
Speaker Amplification Type ‎Active
Batteries included ‎No
Batteries Required ‎No
Material Type ‎Wood
Manufacturer ‎inMusic Brands Inc.
Item model number ‎TX18S
ASIN ‎B0DP7R7XQY

Additional Information

Date First Available Jan. 31 2025
Customer Reviews
2.5 out of 5 stars (2)

2.5 out of 5 stars
鶹 Rank

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ALTO TX18S 900W 18" Subwoofer, DSP-Enhanced Powered PA Speaker with 3" Voice Coil, Superior Bass, Easy Setup


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Product description

The Alto Professional TX18S subwoofer is engineered for those who demand powerful, deep bass and pristine sound clarity. Perfect for large venues, nightclubs, houses of worship, or even commercial spaces like restaurants and gyms, this 900W 18-inch subwoofer delivers a robust low-end response that you can feel and hear. Whether you're a DJ, musician, or event coordinator, the TX18S is built to withstand the rigors of transport and integrates effortlessly into any audio setup. Designed with ease of use in mind, the TX18S combines simple controls with superior performance, making it ideal for both professional sound engineers and beginners alike. With a powerful 18-inch driver and a 3-inch voice coil, the TX18S ensures deep, nuanced bass response that fills large spaces with vibrant low-end frequencies. Its 900W onboard amplifier provides distortion-free sound, even at maximum volume, while advanced circuitry and overload protection keep the subwoofer running smoothly. From its rugged, durable enclosure to its reliable performance in any setting, the TX18S stands out as the go-to subwoofer for sound professionals and venue owners alike.


From the brand


From the manufacturer

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

MUCH MORE THAN SHEER SONIC FORCE

HEAR THE DREAM

Engineered for those who demand powerful, deep bass and pristine sound clarity, the TX18S subwoofer comes equipped with an ultra-efficient 900W Class-D amplifier, ready to deliver a robust low-end response that you can feel and hear.

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Worry Less, Play More

Whether enhancing your live sound setup, upgrading your club or restaurant’s audio system, or looking for a reliable subwoofer for mobile gigs, the TX18S is the solution you’ve been waiting for.

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

Sonic Might and Reliability

With a powerful 18" driver and a 3" voice coil, the TX18S ensures deep, nuanced bass response that fills large spaces with vibrant low-end frequencies, seamlessly integrating with any speakers.

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

Built to Perform

A 900W onboard amplifier provides distortion-free sound, even at maximum volume, while advanced circuitry and overload protection keep the subwoofer running smoothly, no matter the environment.

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

Versatile and Easy to Use

Fully equipped with a metal grille, convenient side handles, 36mm pole socket for PA speaker mounting, XLR and 1/4" combo inputs, the TX18S is easy to integrate into any sound system or venue setup.

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

  1. DSP-Enhanced Sonic Might - Thanks to an 18" high-output driver with a 3" voice coil, the TX18S can handle the nuanced, deep bass frequencies that are all too commonly lost when using standard full-range speakers
  2. Multiple Output Modes - Two different Live and Music EQ voicing modes allow users to switch the subwoofer's frequency response to seamlessly integrate in music playback or DJ settings and live performance settings
  3. Selectable Low Pass Filter - Select the center frequency of the LP Filter (120 Hz, 100 Hz, or 80 Hz) to match any speaker with the press of a button as opposed to having to fuss with complicated, multifaceted controls
  4. Polarity Reverse - Press this button to reverse the phase of the subwoofer output to compensate for low-frequency cancellation
  5. Built to Last - Rugged, internally braced front-ported MDF cabinet with 36mm pole socket and full metal grille for premium style and protection; splatter-spray finish retains sleek appearance even with heavy use
  6. Optimized for Portability - TX18S comes with convenient side handles and caster threads at the rear of the cabinet for easy caster attachment. Casters not included; if desired, they must be 3", 76 x 44 mm, 150 lbs-rated

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

Ground-Shaking Bass

Low-end frequencies so rich and powerful, that your audience not only hears, but feels too.

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

Travels Well

Calling all DJs and musicians carrying equipment from location to location - the TX18S is here!

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

Straight-Out-of-the-Box

Make TX18S a permanent fixture of your restaurant, bar, cafe or gym - see how easy it is to use.

subwoofer active subwoofer DJ subwoofer outdoor subwoofer

DSP-Based Equalization

Circuitry and overload protection ensure your low end is clean and clear even at full blast.

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Customer Reviews
2.5 out of 5 stars 2
4.5 out of 5 stars 2,259
4.5 out of 5 stars 84
4.4 out of 5 stars 46
4.5 out of 5 stars 74
Output Power 900W peak, Class D 900W peak, Class D 2500W peak 2500W peak 2500W peak
Transducer Low/ Maximum SPL 18" woofer / 126 dB 12" woofer / 126 dB 12" woofer/ 130 dB 15" woofer/ 132 dB 18" woofer/ 137 dB
Frequency Response 36 Hz – 115 Hz (-3dB) 46 Hz – 115 Hz (-3dB) 44 Hz – 140 Hz (- 3 dB) 36 Hz – 110 Hz (- 3 dB) 29 Hz – 100 Hz (- 3 dB)
Dimensions (HxWxD)/ Weight 585 x 585 x 585 mm / 39.8 kg 22.4 kg 510 x 405 x 405 mm / 22.4 kg 39.8 kg 454.7 x 459.7 x 505.5 mm/ 25.9 kg 541 x 523 x 627 mm/ 39.51 kg 678.2 x 530.9 x 627.4 mm/ 42.2 kg
Caster Mounts* Yes/ *Casters Not Included No/ *Casters Not Included No/ *Casters Not Included Yes/ *Casters Not Included Yes/ *Casters Not Included