Active PA Subwoofers

An Active PA Subwoofer is crucial in experiencing the full scope of your audio output by highlighting low-end frequencies within sound. The subs are self-amplified and are used alongside a PA set up to boost the bass response to music. Audio setups are often designed to handle mid to high range frequencies, introducing an active PA subwoofer to your setup will elevate your sound extensively.

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  1. Vonyx SWA18 18" Active Subwoofer
    In stock
    £145.00
    Vonyx SWA18 18" Active Subwoofer
    • 250W RMS Power/500W Max Power/1000W Peak Power
    • Low frequency 18 inch driver driven by it's built-in amplifier that pushes a 500W continuous power output that peaks at a huge 1000W
    • Built-in active low-pass filter for splitting the frequencies between itself and a connected main speaker
    • Adjustable switch of 0-180 degrees for phase control when using with main speakers
    • IN/THRU connection for line signal chaining to multiple SWA18 subwoofers providing limitless power
    • Tough carpet cabinet covering and metal grill for extra added protection from damage
    Rating:
    84% of 100
    £145.00
    In stock

    Free delivery and weekend delivery available

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  2. Vonyx SWA15 15" Active Subwoofer
    In stock
    £120.00
    Vonyx SWA15 15" Active Subwoofer
    • 150W RMS Power/300W Max Power/600W Peak Power
    • Low frequency 15 inch driver driven by it's built-in amplifier that pushes a 150W continuous power output that peaks at a huge 600W
    • Built-in active low-pass filter for splitting the frequencies between itself and a connected main speaker
    • Adjustable switch of 0-180 degrees for phase control when using with main speakers
    • IN/THRU connection for line signal chaining to multiple SWA15 subwoofers providing limitless power
    • Tough carpet cabinet covering and metal grill for extra added protection from damage
    Rating:
    79% of 100
    £120.00
    In stock

    Free delivery and weekend delivery available

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  3. Vonyx SWP18 PRO 18" Active Subwoofer
    Sale
    In stock
    £269.00
    Vonyx SWP18 PRO 18" Active Subwoofer
    • 600W RMS Power/1200W Max Power
    • A powerful amplifier capable of pulling 1200 watts of power, makes this subwoofer ideal for medium to large PA installation
    • Built-in low-pass filter adjustable between 40Hz and 250Hz passing lower signals than it's cutoff frequency
    • Switchable phase control of 0 - 180 degrees for flipping the signal waveform positions
    • Daisy-chain linking multiple subwoofers via it's IN/THRU connections
    • PA Speaker mounting via it's 35mm top hat pole socket located on the top panel
    Rating:
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    £269.00
    In stock

    Free delivery and weekend delivery available

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  4. Vonyx SMWBA18MP3 18" Bluetooth Active Subwoofer
    In stock
    £190.00
    Vonyx SMWBA18MP3 18" Bluetooth Active Subwoofer
    • Active 500W subwoofer
    • 2 x 250W full range amplifier
    • Using Bluetooth wireless technology for audio streaming
    • USB port and SD/MMC for MP3 playback
    • Stereo RCA and 6,3mm Jack line inputs with Loop Thru function
    Rating:
    100% of 100
    £190.00
    In stock

    Free delivery and weekend delivery available

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  5. Vonyx SMWBA15MP3 15" Bluetooth Active Subwoofer
    Sale
    In stock
    £170.00
    Vonyx SMWBA15MP3 15" Bluetooth Active Subwoofer
    • Active 300W subwoofer
    • 2 x 150W full range amplifier
    • Using Bluetooth wireless technology for audio streaming
    • USB port and SD/MMC for MP3 playback
    • Stereo RCA and 6,3mm Jack line inputs with Loop Thru function
    Rating:
    100% of 100
    £170.00
    In stock

    Free delivery and weekend delivery available

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  6. Vonyx SWP15 PRO 15" Active Subwoofer
    Sale
    In stock
    £200.00
    Vonyx SWP15 PRO 15" Active Subwoofer
    • 200W RMS Power/400W Max Power/800W Peak Power
    • The inbuilt amplifier features selectable phase adjust and an active low pass filter to help the large 15 inch woofer to perform at it's absolute best at all times.
    • The wide frequency response of 40Hz - 250Hz is significantly enhanced by the dense MDF constructed enclosure which eliminates unwanted resonance to help give deep bass
    • Easy connection to another subwoofer via the THRU output and choice of XLR and RCA / Phono inputs for the source. Easy direct connection from your mixer or line level device
    • Lightweight at just 19.9kg makes the SWP15 a perfect choice for the mobile DJ, live bands and solo performer, with the recessed handles making lifting simple
    • Built in output clipping limiter warning and ground lift switch to allow you to dial the system in for optimum performance in any location or situation. The tough resin finish cabinet and punched metal grille will ensure the SWP15 performs time and time again.
    Rating:
    100% of 100
    £200.00
    In stock

    Free delivery and weekend delivery available

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  7. Vonyx SWA18 18" Active Subwoofer Pair
    In stock
    £259.00
    Vonyx SWA18 18" Active Subwoofer Pair
    • 250W RMS Power/500W Max Power/1000W Peak Power
    • Powerful 18 inch active subwoofer set with 2 x Vonyx SWA18 units
    • Each SWA18 features an onboard 250W RMS amplifier with adjustable EQ and crossover with frequency cut-off
    • Classic design with carpet covered wood enclosure, metal corners and punched metal grille
    • XLR input and Output with RCA/Phono line level input
    • Perfect as additions to standard PA speakers giving sub-bass capability. Ideal for mobile DJs, live bands and performers
    £259.00
    In stock

    Free delivery and weekend delivery available

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  8. PD PD615SA 15" Active Subwoofer
    In stock
    £339.00
    PD PD615SA 15" Active Subwoofer
    • 500W Active subwoofer 15"
    • Efficient class-D amplifier
    • Plywood housing with strong rubber coating
    • XLR Balanced line input
    • Loop through for connection to second amplifier
    £339.00
    In stock

    Free delivery and weekend delivery available

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  9. PD PD618SA 18" Active Subwoofer
    Sale
    In stock
    £479.00
    PD PD618SA 18" Active Subwoofer
    • 500W RMS Power/700W Max Power/1400W Peak Power
    • Powerful 18 inch subwoofer driver delivering a staggering 130dB at 350W RMS for an amazing bass reproduction
    • Solid plywood constructed enclosure finished in textured rubberised paint with punched metal grille and recessed side carry handles make the PD618SA as durable as you could need for touring and mobile work or installation
    • Professional XLR / Jack inputs with XLR direct line out for feeding to a second subwoofer, and cross-over filtered XLR outputs with adjustable frequency cut for the connection of satellite top speakers
    • Simple to operate with 0-180 degree phase switch and master volume control, the PD618SA really is a plug and play unit that can be setup by anyone
    • Cabinet features insets to the top for the easy location of additional PD618SA should you wish to stack a second unit. There is also the industry standard 35mm top hat insert for installation of a speaker pole for using a satellite top speaker
    £479.00
    In stock

    Free delivery and weekend delivery available

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  10. Vonyx SMWBA18 Amplified 18" Active Subwoofer
    In stock
    £209.00
    Vonyx SMWBA18 Amplified 18" Active Subwoofer
    • Active 500W subwoofer
    • 2 x 250W full range amplifier
    • Stereo line inputs with Loop Thru function
    • Microphone input with echo function
    £209.00
    In stock

    Free delivery and weekend delivery available

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  11. Vonyx SWP18 PRO 18" Active Subwoofer Pair
    In stock
    £429.00
    Vonyx SWP18 PRO 18" Active Subwoofer Pair
    • Built-In Active Low-Pass Filter
    • Deep Resonance-Free Bass
    • Phase Adjustable
    £429.00
    In stock

    Free delivery and weekend delivery available

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  12. Studiomaster Drive 15SA Active Subwoofer
    In stock
    £309.00
    Studiomaster Drive 15SA Active Subwoofer
    • 15 inch Active subwoofer
    • Excellent low end clarity for bass frequencies
    • Fairly heavy but has side handles for transportation
    • On board crossover
    • 6 XLR Inputs
    Rating:
    100% of 100
    £309.00
    In stock

    Free delivery and weekend delivery available

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  13. Skytec SMWBA15 Amplified 15" Active Subwoofer
    In stock
    £175.00
    Skytec SMWBA15 Amplified 15" Active Subwoofer
    • Active 300W subwoofer
    • 2 x 150W full range amplifier
    • Stereo line inputs with Loop Thru function
    • Microphone input with echo function
    £175.00
    In stock

    Free delivery and weekend delivery available

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  14. Vonyx SMWBA18 Amplified 18" Active Subwoofer Pair
    In stock
    £409.00
    Vonyx SMWBA18 Amplified 18" Active Subwoofer Pair
    • Active 500W subwoofer
    • 2x 250W full range amplifier
    • Stereo line inputs with Loop Thru function
    £409.00
    In stock

    Free delivery and weekend delivery available

    More Info
  15. Vonyx SWP15 PRO 15" Active Subwoofer Pair
    Sale
    In stock
    £359.00
    Vonyx SWP15 PRO 15" Active Subwoofer Pair
    • Built-In Active Low-Pass Filter
    • Deep Resonance-Free Bass
    • Phase Adjustable
    £359.00
    In stock

    Free delivery and weekend delivery available

    More Info
  16. Vonyx SWA15 15" Active Subwoofer Pair
    In stock
    £239.00
    Vonyx SWA15 15" Active Subwoofer Pair
    • 2x Vonyx 170.795 15 Inch Active DJ Subwoofer 600W
    £239.00
    In stock

    Free delivery and weekend delivery available

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  17. Studiomaster Drive 15SA Active Subwoofer Pair
    Sale
    In stock
    £599.00
    Studiomaster Drive 15SA Active Subwoofer Pair
    • 15 Inch Active Subwoofer 1000 Watt RMS (Each Sub)
    • Frequency Response: 35Hz-200Hz (Each)
    • Max SPL: 127dB (Each)
    £599.00
    In stock

    Free delivery and weekend delivery available

    More Info
  18. Skytec SMWBA15 Amplified 15" Active Subwoofer Pair
    In stock
    £309.00
    Skytec SMWBA15 Amplified 15" Active Subwoofer Pair
    • Active 300W subwoofer
    • 2x 150W full range amplifier
    • Stereo line inputs with Loop Thru function
    £309.00
    In stock

    Free delivery and weekend delivery available

    More Info
  19. Skytec 15" Active Subwoofer

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    £139.99
    Skytec 15" Active Subwoofer
    • Large 15 " woofer
    • Built-in active low-pass filter
    • Built-in amplifier
    • Deep resonance-free bass
    £139.99

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    Free delivery and weekend delivery available

  20. RCF SUB 708-AS II Active Subwoofer

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    £1,130.00
    RCF SUB 708-AS II Active Subwoofer
    • 1400 Watt Digital Amplifier
    • 18" Woofer, bass reflex housing
    • Stereo crossover
    • Switchable crossover frequencies
    £1,130.00

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    Free delivery and weekend delivery available

  21. RCF SUB 708-AS II Active Subwoofer Pair

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    £2,199.00
    RCF SUB 708-AS II Active Subwoofer Pair
    • 2x RCF SUB 708-AS II Active Powered 18" DJ Club Portable PA Sub Subwoofer 1400W Max
    £2,199.00

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    Free delivery and weekend delivery available

  22. Vonyx SMWA18 18" Active Subwoofer

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    £229.99
    Vonyx SMWA18 18" Active Subwoofer
    • A subwoofer with adjustable low-pass filter between 40Hz and 150Hz.
    • Features a 1000W amplifier, a phase switch to let the sub acoustically play along in phase with the main speakers, reproducing an excellent deep bass sound ¡nd an IN/THRU connection for parallel operation of line signals.
    £229.99

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    Free delivery and weekend delivery available

  23. Skytec 12" Active Subwoofer

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    £130.00
    Skytec 12" Active Subwoofer
    • Large 12" (30cm) woofer
    • Built-in active low-pass filter
    • Built-in amplifier
    • Deep resonance-free bass
    £130.00

    This product is currently out of stock or unavailable. Contact our sales team for more info.

    Free delivery and weekend delivery available

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Active subs will boost the lower frequencies in your sound without needing a separate amplifier to do so. As the amplifier is already built within the sub, these systems deepen your low-end sound output while simultaneously taking the strain off your tweeters for a well-rounded, balanced sound. We offer a variety of Active Subwoofers from brands such as Studiomaster, Vonyx and Power Dynamics, in sizes from 12 to 18 inches.

Buy Active Subwoofers

An active sub will greatly improve your overall sound output, these speakers working to boost the bass signals within your music. Utilising the built-in amplifier, any bass-heavy music will sound far clearer as the low-end frequencies are channelled through the speaker driver. This leaves far more room for your tweeters to deal with the high and mid frequencies, balancing your sound much more professionally.

Active subwoofers work by delivering a better balance between low and high frequencies in the selected music, this is mostly a genre sensitive personal preference. While a small degree of individual knowledge is needed to refine the sound it is easy to integrate it smoothly with a mixing console and/or other PA speakers. Human ears cannot tell where bass frequencies are being emitted from and will often relate them to wherever other sounds are being made.

Active subwoofers have the capability to widen the scope of your mix, offering a new level of deepness to the final master audio you require. For reference, think of your active subwoofer as a loft conversion, homes run just fine without conversions but spending a little extra will give you a lot more room to manoeuvre. Relate this to sound design and you'll realise how important an active subwoofer can be, allowing you to explore many different styles of music uninterrupted by distortion.

Discover Active PA Subwoofers

As with any sound enhancements, a personal comparison must be made to determine the quality of the sound itself, remember that the appropriate quantity is crucial. A lot of nightclubs or street racers with large subwoofers in the boot of their cars tend to overwork bass frequencies and if pushed too far this can lead to an inaudible humming noise. This is where quantity comes in, you only want the bass to accentuate your mids and trebles as this increases clarity and volume of sounds.

Higher power subs are preferred by many professionals as the larger wattage denotes the overall power of the driver itself. The size of the inner speaker driver does not always mean it is the better choice, this comes down to power and wattage alone. For instance, subwoofers at 600W do not necessarily need to be used six times as loud as a 100W sub, it is just an indicator of the subs potential and not necessarily a finish line so to speak.

The real measure of a decent quality sub is experiencing a fuller sound without necessarily taking too much notice of the bass signal. It should always complement and enhance the existing sound as opposed to totally overpowering the system until it sounds very muffled and effectively inaudible.

Home Active Sub

Active subs are often used domestically in the home as part of an advanced home cinema system, giving TV movies and video games an additional audio edge. Of course, those that love these types of media are only experiencing around 70 per cent of the actual sound design of the visual. Some 30 per cent is lost from only making use of the generic TV speakers built into the TV itself, that is not the case for all TVs but sadly a great deal of them.

Subwoofers accentuate and refine the lower end frequencies of the audio mix intended by the original sound designer. TV speakers are equipped to handle mostly mid to high range frequency, you may have noticed televisions in the past making a short crackling sound, during explosion scenes for example. The TV speakers are trying to give listeners the full soundscape of a big booming sound but as the speakers are operating at 70 per cent, this tends to overloads them, giving the crackling sound as a result.

Subs connected to a television provide a far more effective sonic clarity, a connection is simple to do and it will immediately improve the sound quality of all TV-based entertainment. The above does depend on the quality of your TV, you may have an expensive system with excellent built-in speakers but lesser TVs tend to sound rather tinny, especially during movies. As mentioned, a subwoofers main purpose is refining bass tones, but coupled with lesser speakers you can get the very best out of your existing equipment by incorporating one into your home.

Does a subwoofer need a power source?

Only passive subwoofers need a separate power source, their active counterparts already have one built inside. Passive subs must be connected to a separate power amplifier to work efficiently where an active subwoofer draws its own power directly from the mains.


Ordering your active subwoofer

When an active PA subwoofer is ordered they can be very heavy during delivery, naturally, the size of the driver tends to bulk up the size and weight of the sub itself. In some rare cases, a smaller sub could be heavier than a larger one if it has additional electronics built within. We ask customers to be careful during transport and always request the assistance of another as you move your sub by hand, they can be awkward to carry.

You may be perfectly fine to carry the speaker around unassisted but only ever do this in confidence, misjudging your limits and overexerting yourself can lead to physical issues later down the line. Additionally, if your sub order is to frequently play some bass-heavy music, consider browsing for some in-ear protection or other noise-cancelling devices. Boosting low frequencies too far too often can cause latent problems with hearing, enjoy your music sensibly and remember that a huge amount of bass is not necessarily a positive thing.