Alto Professional TX18S 18 inch Active PA Subwoofer

Alto Professional TX18S 18 inch Active PA Subwoofer

The Alto Professional TX18S is a powerful active subwoofer designed for DJs, musicians, and event organisers who need deep, impactful bass. Its 900W Class-D amplifier and 18-inch high-output woofer ensure strong, well-defined low frequencies that enhance any sound system.

With DSP-based EQ and selectable Music and Live voicings, you can tailor the sub's response to suit different applications. A selectable Low Pass Filter (80Hz, 100Hz, or 120Hz) lets you integrate it seamlessly with different speakers.

The TX18S features a rugged, internally braced MDF cabinet with a durable splatter-spray finish, built to withstand frequent use. Side handles and a 36mm pole socket make it easy to set up and transport.

Product Ref: 326580

Full Description

Deep, powerful bass

The TX18S delivers impressive low-end performance with its 900W ultra-efficient Class-D amplifier. The 18-inch high-output woofer, paired with a 3-inch voice coil, produces punchy and well-defined bass, making it ideal for live music, DJ performances, and event sound reinforcement.

Its ported design enhances bass response, ensuring rich, full-bodied sound that fills the room.

Customisable sound shaping

With DSP-based EQ and selectable Music and Live voicings, the TX18S adapts to different setups with ease. The selectable Low Pass Filter (80Hz, 100Hz, or 120Hz) lets you fine-tune how the sub integrates with your main speakers.

A polarity reverse switch helps correct phase alignment issues, ensuring smooth, balanced bass in any environment.

Flexible connectivity

The TX18S offers versatile input and output options, including two XLR + 1/4-inch combo line inputs and two balanced XLR line outputs. This makes it easy to connect to a variety of audio sources and expand your sound system.

Whether used as part of a PA setup or a DJ rig, the TX18S integrates seamlessly with different configurations.

Built to last

Designed for frequent use, the TX18S features a rugged MDF cabinet with internal bracing for added durability. Its full metal grille provides extra protection, while the splatter-spray finish resists wear and tear, keeping it looking great over time.

Side handles ensure easy transport, and the 36mm pole socket allows for simple speaker mounting, making setup quick and hassle-free.

Specifications

• LF Driver: 18” Woofer / 3” VC

• Power Amp: 450 W RMS / 900 W Peak Class-D

• Frequency Response: 36 Hz – 115 Hz (-3 dB)

• Max SPL: 126 dB @ 1m

• Connectors: (2) XLR/TRS Combo Inputs, (2) Balanced XLR Line Outputs, (1) IEC Power Cable Input

• Power Connection: IEC

• Voltage: 100-120 | 220-240 VAC, 50/60 Hz

• DSP LPF: 80 Hz / 100 Hz / 120 Hz @ 24 dB Per Octave

• Handles: 2 Side Handles

• Enclosure: Internally Braced Front-Ported MDF Cabinet With Black Splatter Spray, Metal Grille, Rubber Feet

• Mounting: 36 mm Pole Socket

• Dimensions: 23.0” x 23.0” x 23.0” (585 x 585 x 585 mm)

• Weight: 87.7 lbs / 39.8 kg

Learn more about Alto Professional

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