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Optimal Audio

Optimal Audio Sub 18 18" Subwoofer 800W

SKU: SUB18-B
Optimal Audio Sub 18 18″ Subwoofer 800W
Optimal Audio Sub 18 18″ Subwoofer 800W
Optimal Audio Sub 18 18″ Subwoofer 800W
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    £1,050.00 inc VAT
    £875.00 ex VAT

    6 available online
    FREE delivery by MondayOrder by 3pm
    Click & Collect tomorrow ›Collect from our warehouse in Wembley, London
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    3 Year Manufacturer Warranty Included
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    Optional Add-Ons
    Optimal Audio M8 Eye Bolt for Cuboid and Sub Loudspeakers M8 Eye Bolt
    £32.00 inc VAT
    £26.67 ex VAT
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    About this Product

    The Optimal Audio Sub 18 is the flagship subwoofer in the range, featuring an 18-inch driver with 800W power handling and 136 dB peak SPL. Built for large-scale commercial installations, nightclubs, live music venues, and event spaces, it delivers the deep, powerful bass foundation needed when serious low-frequency output is non-negotiable.

    18″
    Driver · Woofer
    800W
    Power Handling · Continuous
    136 dB
    Peak SPL · Peak output
    Bass-Reflex
    Design · Ported enclosure
    Features
    18″ driver with 800W continuous power handling, the most powerful sub in the Optimal Audio range
    Bass-reflex design for efficient, deep low-frequency extension
    136 dB peak SPL for large venues, nightclubs, and live music applications
    Plywood enclosure for touring-grade durability and low resonance
    M8 threaded inserts for flexible rigging and mounting configurations
    Integrates with Optimal Audio SmartAmps and Zone controllers for complete system management
    Black finish as standard
    Specifications
    Driver 18″
    Type Passive subwoofer, bass-reflex
    Power Handling 800W
    Peak SPL 136 dB
    Enclosure Material Plywood
    Mounting M8 threaded inserts
    Colour Black
    SKU SUB18-B
    Compare the Range
    Optimal Audio Sub 18 18″ Subwoofer 800W
    Sub 18
    £1,050.00 inc VAT
    £875.00 ex VAT
    • 18" / 800W
    • High Power Passive
    Viewing Now
    Optimal Audio Sub 6 6″ Subwoofer 250W
    Sub 6 Black
    £341.00 inc VAT
    £284.17 ex VAT
    • 6" / 250W
    • Ultra Compact
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    Optimal Audio Sub 10 10″ Subwoofer 250W
    Sub 10
    £428.00 inc VAT
    £356.67 ex VAT
    • 10" / 250W
    • Compact Passive
    View →
    Optimal Audio Sub 15 15″ Subwoofer 500W
    Sub 15
    £824.00 inc VAT
    £686.67 ex VAT
    • 15" / 500W
    • Performance Passive
    View →

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    More Information

    • Compact size
    • Powerful sub-bass support down to 42Hz (± 3dB)
    • High power handling

    Manuals & Downloads

    PDFDatasheetPDF

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    Frequently Asked Questions

    We’re a working touring and events production company founded in 2019 by sound engineers with many years of experience. 

    We’re very selective about the products we sell. Everything we supply we use ourselves on our tours, events and productions. This means we can offer a level of buying advice and aftersales support that can’t be beaten.

    We’re official dealers of brands such as Allen & Heath, Audio Technica and sE Electronics. We also stock other leading brands including Shure, Sennheiser, Martin Audio and Chauvet Professional.

    We accept Debit & Credit Cards, Apple Pay, Android Pay and Paypal. We also offer finance through Paypal Credit and Klarna.

    Business Customers can choose to receive a Proforma Invoice on checkout to pay by bank transfer.

    Yes. We run an AV production business and have AV Engineers on hand to provide advice and technical support during our operating hours.

    The quickest way to contact us for advice and support is through WhatsApp or Email.

    We're an AV production company as well as a retailer. Sharing staff and premises between the two allows us to keep our costs down.

    As AV Engineers ourselves, our mission is to provide high quality equipment to other AV Professionals at reasonable prices.

    Please see our Returns page for information on our returns policy and to start a return online.

    Generally if you change your mind you can return your item for a full refund within 14 days of purchase - as long as the product is unopened and unused. 

    If an item is faulty or damaged we will arrange collection free of charge and repair/replace it as quickly as possible.

    Estimated delivery times are shown on the product page. For items in stock we aim to get your order to you within 1 - 3 working days.

    Some items are ordered directly from the manufacturer. These may have longer lead times which will be estimated on the product page. Please contact us for a more accurate lead time.

    Yes. You can collect from our Production Space in Wembley, London. Please note that only a small range of our products are stored here, items showing as in stock may need to be transferred from our warehouse. If the item is in stock it will usually be ready to collect the same or next working day.

    Yes. We can install across the UK. 

    We've been involved in installation projects ranging from large capacity Music Venues to Coffee Shops, Churches and Council Offices.

    Please click here to contact us to learn more about our installation service.

    Guides on this kit