HomeAlto TS18S

Alto TS18S

18 inch Active Subwoofer

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£699.00 inc. VAT
Expected: 28/05/2024
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Special Offers Added:

SKU: DJK18687106 EAN: 0816311012126

Special Offers When bought with this product

Key Features

The Alto TS18S active subwoofer is built on years of experience from their previous models. The TS18s packs a serious punch thanks to the built in 2500w amp pushing out a whopping 137 dB spl.

Rock-Solid Sound from the Bottom, Up

The best performances need the best in sound reinforcement at all ends of the sonic spectrum. For tight, punchy low-end look no further than the Alto Professional TS18S powered subwoofer. When added to your full-range speaker setup, the TS18S subwoofer delivers powerful but controlled low-end presence to your PA configuration for a full and complete listening experience for the modern public music space. With a powered subwoofer, any musical performance will take a giant leap into the realm of tonal balance with the perfect blend of hi, mid, and extended low-end frequencies.

The Most Powerful Subwoofer Yet

Sound reinforcement needs can change from night to night but the best in the business count on reliable power at their disposal whenever it’s needed. The TS18S is Alto Professional’s most powerful subwoofer yet, packing an incredible 2500 watts of power to make concert halls come alive, night clubs punch and pump, houses of worship lift-up instrumental performances, and more. Thanks to its high-efficiency Class D amplifier, TS18S adds the necessary heft and weight to any public performance for a balanced representation of musical artistry in any environment.


Carefully Built for Quality Performance

A structure is only as good as its foundation and your sound is no different. The TS18S subwoofer is built with reliable durability in mind to be the anchor of your setup and the anchor of your sound. Built with superior materials, the TS18S is engineered with a premium internally braced composite cabinet enclosure for tight, controlled sound. Enjoy all the thump and bump without the unnecessary rumbles and rattles. The key to low-end is clear definition for impactful sonic transmission and a carefully crafted enclosure ensures a truly unbiased sound delivery. With a premium 18-inch driver featuring a 3-inch, voice coil transducer, rest assured, the TS18S subwoofer is built to handle the rigors of live performance whether permanently installed or as part of a traveling setup, night after night.

A Subwoofer for Any Setting

What good is a sub if it doesn’t play along nicely with the rest of your speaker setup? The TS18S is designed and engineered to fit into any system thanks to the versatile onboard electronics switches. Quickly bounce through the User-selectable EQ tunings to enable, boost, or bypass low end accentuation appropriately as different shows require. Use the intuitive Phase Alignment function as needed to make sure your tops and subs perform well no matter the setting or setup. With dedicated input and output paths, seamlessly connect your companion Alto Professional full-range loudspeakers or any other standard loudspeaker units. 


2500W of Thunderous Bass

  • High-efficiency Class D amplifier

  • Transducer: 18-inch driver with 3-inch high-temperature voice coil A Subwoofer That’s Built to Last

  • Rugged, internally-braced front-ported MDF cabinet with integrated

    36mm pole socket

  • Mark-resistant splatter-spray finish always looks good, even with heavy use

  • Electronic clip, thermal and transducer overdrive protection

    The Perfect Match for Your Live Sound Setup

• (2) XLR+1/4-inch combo inputs + (2) balanced XLR line outputs
• (2) XLR thru outputs for linking
• User-selectable EQ tunings (Off, Live, DJ)
• Phase Alignment selector switch (0°/90°/180°/270°) 


* Please note - due to the size and weight of this product it is not available for a guaranteed next day delivery. We will contact you once ordered to discuss delivery details.





Product Description

Technical Specifications

Output Power

2500Wpeak@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)


(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


Internally braced MDF cabinet; 36 mm mounting pole socket on top panel Caster Insert Thread Gauge: M6 x 1.00 mm


Connection: Standard IEC cable
Input Voltage: 100-120, 50/60 Hz; 220-240 VAC 50/60 Hz Consumption: 1600W Fuse: 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


93.0 lbs. / 42.2 kg


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Do you own the Alto TS18S? Why not write a review based on your experience with it.
8 May, 2024
OMG the Bass is Incredible!!!
I already had the TS415s Tops which at 2ohms kick out significant Bass on there own BUT once I connected them to the TS18S I was astounded at the range of Bass I could have only imaginined until then... The Bass on these units is incredible!!! I had to turn them down on my mixer to 1 as it was so loud and even then they were still so loud. Many people have already commented on the clarity and depth of the sound which is fantastic. One very happy DJ :-)
0 found this helpful
16 November, 2023
By combining two of these subs with two TS415 the end sound quality is absolutely outstanding
The delivery and customer service experience for the usual exceptional standard from the djkit.com team who always impress.
0 found this helpful


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Alto TS18S

Delivery And Stock Information

Free next working day delivery on orders over £100 placed before 3:30pm Monday to Friday.

Orders placed at the weekend or after 3.30pm on Friday will be delivered on the following Tuesday (excluding Bank Holidays).

Larger items / orders e.g large bass speakers or multiple speakers may have to be shipped via a pallet service which may take 1-2 days.

Please check the estimated delivery date on the product, some items can take 2-7 days to be delivered. 

Free next day delivery applies only to the UK mainland for orders over £100. Other locations will be charged as follows

    • Highlands and Islands 2-3 Days* + £25
    • Northern Ireland 2-3 Days* +£10
    • Deliveries will be made subject to the terms and conditions of the courier company. djkit.com will not be held responsible for late deliveries.

In the event that the items ordered are unavailable for next day delivery, you will be contacted by djkit.com to arrange a suitable delivery date.

"In stock" means that the product displayed is either in stock with ourselves or our suppliers and is available for delivery. Stock levels are subject to change without prior notice.


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Finance Available!

Finance options may be available, subject to status
Representative 0% APR Finance on all orders over £280
10% deposit then 6 months payment of £104.85
12 months 0% may also be available

You can apply for finance to purchase this item. A minimum 10% deposit is required and you can opt for either 24 or 36 monthly payments thereafter representative 16.9% APR.

Alto TS18S
from £22.03/month

Representative Example

Cash price £699.00, deposit £69.90. Borrowing £629.10 over 36 months with a representative APR of 16.9% fixed APR, the monthly payments will be £22.02 and the total amount payable will be £862.62

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