---
product_id: 691727604
title: "ALTO TX18S 900W 18\" Subwoofer, DSP-Enhanced Powered PA Speaker with 3\" Voice Coil, Superior Bass, Easy Setup"
brand: "alto"
price: "R33833"
currency: ZAR
in_stock: true
reviews_count: 7
category: "Alto"
url: https://www.desertcart.co.za/products/691727604-alto-tx18s-900w-18-subwoofer-dsp-enhanced-powered-pa-speaker
store_origin: ZA
region: South Africa
---

# 18-inch Woofer Size 900W Power Output DSP-Enhanced EQ & Filters ALTO TX18S 900W 18" Subwoofer, DSP-Enhanced Powered PA Speaker with 3" Voice Coil, Superior Bass, Easy Setup

**Brand:** alto
**Price:** R33833
**Availability:** ✅ In Stock

## Summary

> 🎵 Own the bass, own the room — TX18S brings the boom your crowd craves!

## Quick Answers

- **What is this?** ALTO TX18S 900W 18" Subwoofer, DSP-Enhanced Powered PA Speaker with 3" Voice Coil, Superior Bass, Easy Setup by alto
- **How much does it cost?** R33833 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/691727604-alto-tx18s-900w-18-subwoofer-dsp-enhanced-powered-pa-speaker)

## Best For

- alto enthusiasts

## Why This Product

- Trusted alto brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built for the Road:** Rugged fiberboard cabinet with handles and caster-ready design for effortless transport.
- • **Massive 18" Woofer:** Feel every beat with deep, room-filling low frequencies.
- • **Plug & Play Simplicity:** Pro-level sound without the tech headache—perfect for DJs and event pros.
- • **Powerful 900W Amplifier:** Unleash thunderous bass that commands any venue.
- • **DSP-Enhanced Sound Control:** Seamlessly tailor your bass with selectable EQ and low-pass filters.

## Overview

The ALTO TX18S is a 900W powered subwoofer featuring an 18-inch dynamic driver and a 3-inch voice coil, engineered with DSP-based EQ and selectable low-pass filters for precise bass control. Designed for professional DJs, musicians, and event spaces, it delivers powerful, distortion-free low-end sound in a rugged, portable cabinet optimized for easy setup and transport.

## 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.

Review: The Review You Need (Excellent Speaker) - 1 - Other Bad Reviews: I'm would recommend ignoring some of the bad reviews about sound quality and blown speakers. These are budget speakers... not substitutes for QSC and EV speakers that cost twice as much if not more. 2 - Speaker Usage: I got the 15" speaker! I used just one as the main monitor for band in a 100 seat hotel conference room. Three mics, two keyboards, bass guitar and canon. Had a separate speaker as a floor monitor. But it did the job just fine. P.S. Would recommend just getting a second speaker and or/sub woofer for these smaller events for a fuller sound. 3 - Blown Speakers: The people blowing speakers are probably using them as if they are 2000 watt 15" speakers. Also if playing tracks where you are not aware of the frequencies, not applying EQ is probably what is blowing them. These are probably not the speakers to try to thumb the kick and bass with without a subwoofer. I have never had a problem with live sound with this speaker. 4. Sound Quality: Again only being 700 watt speakers and half the price of some competitors, what can you expect? Don't get me wrong, the sound is very good in these speakers. For the price it's great. Obviously the QSC and EV speakers sound much better. The only pitfall would be this: The EQ is a little odd in the speaker. They have an EQ button but it just boosts the high and low ends. Not very useful. Don't know many time's where you would want the highs boosted along with the lows. If you wanted lows boosted a subwoofer is probably the way to go. But for anything with vocals, the EQ button is useless to me. I wish it had EQ nobs. 5 - Size and Weight: Pretty light weight for the size. The 15" is pretty bulky the shape is little odd. But that's not very important for me. Overall: Excellent for there price. Great standalone speaker for live sound at smaller events. Would make an excellent stage monitor. Plan on getting a second pair and a subwoofer. Don't compare to speakers that cost twice or more of the price.
Review: Really, really great speakers... - I’m a touring sound man, with over 40 years of mixing experience. Even though I'm trying to retire, I still do local shows with friends. I even decided to recommission some parts of an old sound system I owned to do a small show here and there. I didn't have any good stage monitors... but for the occasional show, I didn't want to spend a lot of money getting some. There are plenty of good self-powered cabinets out there if you want to spend $600 apiece or more. Not interested. A friend has some Behringer B212Ds, which I've borrowed a few times. I thought this is the way I'd go but they just didn't have a great natural sound... no real low end and I had to crank the high tone controls just so they'd sound "normal." But there aren't a lot of cabinets that compete with them on price... until I saw a review of the Alto TX312s. I thought I'd give them a try. WOW! They just don't "sound great for the price," they sound GREAT!!! Of course, I got out my test audio setup to put them through their paces. I turned off their "contour" switch and found I might have to add just a bit of EQ to fill out the bottom and the top. But then I did something that I never do... I turned ON the "contour" switch. And this added EXACTLY what I had added on the graph to make them sound good. Here's my take on these: 1. High quality build- These DO NOT feel cheap. A solid thick plastic case construction with a full metal grille. 2. Simple inputs- A combo TRS / XLR input jack, a mic / line sensitivity switch and a level control. That all I would ever want. I don't need broad-band tone controls on a speaker... if I'm doing anything, I'll do it on a graphic EQ or the console. 3. Indicator lights- Again, simple. Power and a signal present light that turns red if you hit it so hard as to engage its protection circuitry. But in trying to test for the red threshold... O-M-G, these things were blasting! 4. Size and weight- Although not as small as some, definitely manageable and fairly light. 5. Other plusses- A fan for cooling, a pass-through XLR output, easy to deal with handles and a pole-mount hole (with a safety bolt). There's even a ground-lift switch if you have any AC issues. And oh yes... the cost. WOW! IMHO, this is hands-down the best value in a powered speaker. Sounds great, easy to deal with, simple operation, loud as heck... and VERY reasonably priced. I'm hoping they do well on the gig but confidence is high. NOW I'm thinking of getting a couple of the TX315s for the MAIN P. A. Yikes!

## Features

- 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
- Precision Engineered - This subwoofer and all other products in the TX Series are designed and tuned in the USA
- Easy Setup and Customization - No need for technical expertise to achieve optimal sound quality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DP7R7XQY |
| Audio Driver Size | 18 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #11,136 in Musical Instruments ( See Top 100 in Musical Instruments ) #6 in Stage Subwoofers |
| Color | Black |
| Compatible Devices | DJ Mixer, Powered Speakers |
| Control Method | Touch |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,315) |
| Date First Available | December 11, 2024 |
| Included Components | TX Sub; Power Cable (6 ft. / 183 cm); Quickstart Guide; Safety & Warranty Manual |
| Input Voltage | 120 Volts |
| Is Waterproof | False |
| Item Weight | 82.7 pounds |
| Item model number | TX18S |
| Manufacturer | inMusic Brands Inc. |
| Material | Wood |
| Model Name | TX18S |
| Mounting Type | Floor Standing |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 23"D x 23"W x 23"H |
| Recommended Uses For Product | For PA Systems, For DJ Setups, For Professional Audio Equipment |
| Shape | Rectangular Prism |
| Speaker Size | 18 Inches |
| Speaker Type | Subwoofer |
| Special Feature | DSP-based EQ, Selectable Low Pass Filter, Portable, Durable |
| Specific Uses For Product | Live performances, Events, Public spaces |
| Style | Subwoofer |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 18 Inches |
| Surround Sound Channel Configuration | 1.0 |
| UPC | 816311012355 |
| Unit Count | 1.0 Count |
| Warranty Type | Limited |
| Woofer Diameter | 18 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** ALTO
- **Connectivity Technology:** XLR
- **Frequency Response:** 100 Hz
- **Speaker Maximum Output Power:** 900 Watts

## Images

![ALTO TX18S 900W 18" Subwoofer, DSP-Enhanced Powered PA Speaker with 3" Voice Coil, Superior Bass, Easy Setup - Image 1](https://m.media-amazon.com/images/I/91CVs1z1CPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Review You Need (Excellent Speaker)
*by J***D on August 12, 2024*

1 - Other Bad Reviews: I'm would recommend ignoring some of the bad reviews about sound quality and blown speakers. These are budget speakers... not substitutes for QSC and EV speakers that cost twice as much if not more. 2 - Speaker Usage: I got the 15" speaker! I used just one as the main monitor for band in a 100 seat hotel conference room. Three mics, two keyboards, bass guitar and canon. Had a separate speaker as a floor monitor. But it did the job just fine. P.S. Would recommend just getting a second speaker and or/sub woofer for these smaller events for a fuller sound. 3 - Blown Speakers: The people blowing speakers are probably using them as if they are 2000 watt 15" speakers. Also if playing tracks where you are not aware of the frequencies, not applying EQ is probably what is blowing them. These are probably not the speakers to try to thumb the kick and bass with without a subwoofer. I have never had a problem with live sound with this speaker. 4. Sound Quality: Again only being 700 watt speakers and half the price of some competitors, what can you expect? Don't get me wrong, the sound is very good in these speakers. For the price it's great. Obviously the QSC and EV speakers sound much better. The only pitfall would be this: The EQ is a little odd in the speaker. They have an EQ button but it just boosts the high and low ends. Not very useful. Don't know many time's where you would want the highs boosted along with the lows. If you wanted lows boosted a subwoofer is probably the way to go. But for anything with vocals, the EQ button is useless to me. I wish it had EQ nobs. 5 - Size and Weight: Pretty light weight for the size. The 15" is pretty bulky the shape is little odd. But that's not very important for me. Overall: Excellent for there price. Great standalone speaker for live sound at smaller events. Would make an excellent stage monitor. Plan on getting a second pair and a subwoofer. Don't compare to speakers that cost twice or more of the price.

### ⭐⭐⭐⭐⭐ Really, really great speakers...
*by P***Y on March 24, 2022*

I’m a touring sound man, with over 40 years of mixing experience. Even though I'm trying to retire, I still do local shows with friends. I even decided to recommission some parts of an old sound system I owned to do a small show here and there. I didn't have any good stage monitors... but for the occasional show, I didn't want to spend a lot of money getting some. There are plenty of good self-powered cabinets out there if you want to spend $600 apiece or more. Not interested. A friend has some Behringer B212Ds, which I've borrowed a few times. I thought this is the way I'd go but they just didn't have a great natural sound... no real low end and I had to crank the high tone controls just so they'd sound "normal." But there aren't a lot of cabinets that compete with them on price... until I saw a review of the Alto TX312s. I thought I'd give them a try. WOW! They just don't "sound great for the price," they sound GREAT!!! Of course, I got out my test audio setup to put them through their paces. I turned off their "contour" switch and found I might have to add just a bit of EQ to fill out the bottom and the top. But then I did something that I never do... I turned ON the "contour" switch. And this added EXACTLY what I had added on the graph to make them sound good. Here's my take on these: 1. High quality build- These DO NOT feel cheap. A solid thick plastic case construction with a full metal grille. 2. Simple inputs- A combo TRS / XLR input jack, a mic / line sensitivity switch and a level control. That all I would ever want. I don't need broad-band tone controls on a speaker... if I'm doing anything, I'll do it on a graphic EQ or the console. 3. Indicator lights- Again, simple. Power and a signal present light that turns red if you hit it so hard as to engage its protection circuitry. But in trying to test for the red threshold... O-M-G, these things were blasting! 4. Size and weight- Although not as small as some, definitely manageable and fairly light. 5. Other plusses- A fan for cooling, a pass-through XLR output, easy to deal with handles and a pole-mount hole (with a safety bolt). There's even a ground-lift switch if you have any AC issues. And oh yes... the cost. WOW! IMHO, this is hands-down the best value in a powered speaker. Sounds great, easy to deal with, simple operation, loud as heck... and VERY reasonably priced. I'm hoping they do well on the gig but confidence is high. NOW I'm thinking of getting a couple of the TX315s for the MAIN P. A. Yikes!

### ⭐⭐⭐⭐⭐ Review
*by A***A on September 29, 2025*

GREAT quality, exceeded my expectations and delivery was timely

## Frequently Bought Together

- ALTO TX18S - 900W 18-inch Subwoofer, DSP-Enhanced Powered PA Speaker with 3-inch Voice Coil, Superior Bass, Easy Setup
- Amazon Basics XLR Male to Female Microphone Cable for Speaker or PA System, All Copper Conductors, 6MM PVC Jacket, 6 Foot, Black
- Amazon Basics Speaker Stand, Holds up to 99.2 lbs, Adjustable Height 52" to 73", Steel, Black

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-13*