Audio Expansion Kits

17 products

  • Weatherproof Wall Speaker PA Expansion Kit

    Weatherproof Wall Speaker PA Expansion Kit

    Delivery in 1-3 days

    The ADPAK-17 extension kit is a flexible add-on solution designed to expand an existing PA or background music system with additional weatherproof loudspeaker coverage. The kit includes five 5.25"  loudspeakers making it ideal for extending audio into additional indoor or sheltered outdoor areas with consistent sound quality. If an extension of fifteen speakers were needed, simply add three kits to the basket! Supplied with 100 metres of speaker cable and an RCA-to-RCA interconnect lead, ADPAK-17 allows for straightforward integration into an existing system with minimal installation effort. The weather-resistant construction of the speakers provides added deployment flexibility, while the included cabling and interconnect ensure a clean, professional system expansion without the need for additional accessories.

    Delivery in 1-3 days

    £669.00

  • Adastra 100V Horn Speaker PA Expansion Kit

    Adastra 100V Horn Speaker PA Expansion Kit

    Delivery in 1-3 days

    The ADPAK-16 extension kit is a practical add-on solution designed to extend an existing 100V line PA system with high-impact outdoor or long-throw audio coverage with five 40W horn loudspeakers for enhanced speech intelligibility and projection. Multiple kits can be added to a single existing system with the right cabling. If an extension of fifteen speakers were needed, simply add three kits to the basket! Supplied with 100 metres of white LSZH speaker cable and an RCA-to-RCA interconnect lead, the kit enables straightforward integration into an existing audio system with minimal installation time. The horn speakers are optimised for demanding environments such as yards, loading bays, sports areas, and industrial sites, delivering focused sound dispersion and high efficiency, while the LSZH cabling supports safer installations in public and commercial buildings. ADPAK-16 provides a scalable, installer-friendly solution for rapidly increasing coverage and output where clarity and reach are the priority.

    Delivery in 1-3 days

    £799.00

  • Cloud High-Capacity Audio Expansion Kit – 16 × CS-C6 Ceiling Speakers with CA4250 Amplifier

    Cloud High-Capacity Audio Expansion Kit – 16 × CS-C6 Ceiling Speakers with CA4250 Amplifier

    Delivery in 1-3 days

    CLPAK-18 – Cloud Audio System Expansion Kit is a high-output add-on solution designed to extend an existing Cloud Electronics audio system where increased coverage is required using discreet ceiling-mounted loudspeakers. Supplied with the powerful Cloud CA4250 four-channel amplifier, sixteen CS-C6 ceiling speakers and 300 metres of speaker cable (3x100m reels), this kit enables substantial system expansion without altering the core system architecture. The system supports both high-impedance (100V line) and low-impedance operation, with up to four speakers connected per channel in low-impedance mode, making it ideally suited to larger retail, hospitality and commercial environments that demand scalable, high-performance audio with a clean, unobtrusive finish.

    Delivery in 1-3 days

    £2,919.00

  • Cloud High-Capacity Audio Expansion Kit – 16 × CS-S6 Wall Speakers with CA4250 Amplifier

    Cloud High-Capacity Audio Expansion Kit – 16 × CS-S6 Wall Speakers with CA4250 Amplifier

    Delivery in 1-3 days

    CLPAK-17 is a Cloud Audio System Expansion Kit, a high-output add-on solution designed to significantly extend an existing Cloud Electronics audio system where increased loudspeaker density or wider zone coverage is required. Supplied with the higher-powered Cloud CA4250 four-channel amplifier, sixteen CS-S6 wall-mount loudspeakers and 300 metres of speaker cable (3x100m reels), this kit provides a robust and scalable expansion path without impacting the core system design. The system supports both high-impedance (100V line) and low-impedance operation, with up to four speakers connected per channel in low-impedance mode, making it ideally suited to larger retail spaces, hospitality venues and commercial environments requiring consistent audio performance, flexibility and future growth capability.

    Delivery in 1-3 days

    £4,839.00

  • Cloud Commercial Audio Expansion Kit – 8 × CS-C6 Ceiling Speakers with CA2250 Amplifier

    Cloud Commercial Audio Expansion Kit – 8 × CS-C6 Ceiling Speakers with CA2250 Amplifier

    Delivery in 1-3 days

    CLPAK-16 is a Cloud Audio System Expansion Kit, a scalable add-on solution designed to extend an existing Cloud Electronics sound system where discreet, ceiling-mounted loudspeaker coverage is required within a zone. Supplied with a Cloud CA2250 two-channel amplifier, eight CS-C6 ceiling speakers and installation cabling, this kit enables straightforward system expansion without altering the core system architecture. The kit supports both high-impedance (100V line) and low-impedance operation, with up to four speakers connected per channel in low-impedance mode, making it well suited to retail, hospitality and commercial interiors requiring clean aesthetics, consistent audio performance and future-proof scalability.

    Delivery in 1-3 days

    £2,299.00

  • Cloud Commercial Audio Expansion Kit – 8 × CS-S6 Wall Speakers with CA2250 Amplifier

    Cloud Commercial Audio Expansion Kit – 8 × CS-S6 Wall Speakers with CA2250 Amplifier

    Delivery in 1-3 days

    The CLPAK-15 is a Cloud Audio System Expansion Kit, designed to be a flexible add-on solution to extend an existing Cloud commercial audio system where additional loudspeaker coverage is required within a zone. Supplied with a Cloud CA2250 two-channel amplifier, eight Cloud CS-S6 surface-mount loudspeakers available in black or white and 200m (2x100m reels) of speaker cabling, this kit enables straightforward system growth without the need to redesign the core infrastructure. The system can be configured in either high-impedance (100V line) or low-impedance operation, with up to four speakers connected per channel in low-impedance mode, making it ideal for retail, hospitality and commercial environments that demand scalable, professional-grade audio performance.

    Delivery in 1-3 days

    £2,639.00

  • Optimal Audio Subwoofer Extension Kit - 2x 10" Subwoofer

    Optimal Audio Subwoofer Extension Kit - 2x 10" Subwoofer

    Delivery in 1-3 days

    The Optimal Audio OAPAK-22 is a high-performance low-frequency extension kit designed for commercial venues that demand substantial bass impact and increased headroom. Ideal for larger bars, restaurants and hospitality environments, this kit builds on the dual-subwoofer concept by utilising larger, higher-power subwoofers for maximum low-end authority. OAPAK-22 employs two Optimal Audio SUB10 subwoofers, powered by the Smart Amp 20, delivering significant low-frequency output while maintaining a controlled and professional sound profile. The dual-subwoofer configuration improves bass distribution across the venue, reducing localisation and providing a more consistent listening experience. Designed as an add-on rather than a standalone system, OAPAK-22 integrates seamlessly with existing Optimal Audio ZONE or Smart Amp installations, offering a straightforward upgrade path for venues seeking increased low-frequency performance.  To complete installation, only balanced twin-conductor audio cable (microphone cable) is required to feed audio to the Smart Amp 10. This is available by the metre in black, allowing precise specification for each project.

    Delivery in 1-3 days

    £2,529.00

  • Optimal Audio Subwoofer Extension Kit - 2x 6" Subwoofer

    Optimal Audio Subwoofer Extension Kit - 2x 6" Subwoofer

    Delivery in 1-3 days

    The Optimal Audio OAPAK-21 is a powerful low-frequency extension kit designed for commercial venues that require increased bass output while maintaining a discreet, space-efficient footprint. Ideal for restaurants, bars, hospitality and leisure environments where low-end impact is desired without deploying large-format subwoofers, this kit delivers controlled, scalable performance as an add-on to existing Optimal Audio systems. OAPAK-21 utilises two Optimal Audio SUB6 6" subwoofers powered by the Smart Amp 20, creating a compact dual-subwoofer solution with enhanced headroom and improved low-frequency distribution. By deploying multiple smaller subwoofers rather than a single large unit, the system achieves greater bass presence, smoother coverage and improved placement flexibility. Designed as an extension rather than a standalone system, OAPAK-21 integrates seamlessly with existing Optimal Audio ZONE or Smart Amp-based installations, providing a straightforward upgrade path for venues seeking more impactful background music performance. To complete installation, only balanced twin-conductor audio cable (microphone cable) is required to feed audio to the Smart Amp 10. This is available by the metre in black, allowing precise specification for each project.

    Delivery in 1-3 days

    £2,299.00

  • Optimal Audio Subwoofer Extension Kit - 1x 10" Subwoofer

    Optimal Audio Subwoofer Extension Kit - 1x 10" Subwoofer

    Delivery in 1-3 days

    The Optimal Audio OAPAK-20 is a high-performance low-frequency extension kit designed to enhance existing Optimal Audio background music systems with greater bass impact and headroom. Intended for venues with higher ambient noise levels or larger spaces, this kit builds on the OAPAK-19 concept by upgrading to a more powerful subwoofer solution, whilst keeping a compact form factor. OAPAK-20 combines the Optimal Audio SUB10 subwoofer with the Smart Amp 10 to deliver controlled, authoritative low-frequency reinforcement. Designed as an add-on rather than a standalone system, the kit integrates seamlessly with existing Optimal Audio ZONE or Smart Amp installations, adding depth and warmth without disrupting the core audio architecture for small to medium sized applications. The SUB10 offers higher power handling than smaller subwoofer formats, making it suitable for larger hospitality venues and spaces where greater audio presence is required. Flexible installation is supported through the included wall-mount bracket, while rack ears allow neat amplifier integration in equipment racks or back-of-house locations. To complete installation, only balanced twin-conductor audio cable (microphone cable) is required to feed audio to the Smart Amp 10. This is available by the metre in black, allowing precise specification for each project.

    Delivery in 1-3 days

    £1,509.00

  • Optimal Audio Subwoofer Extension Kit - 1x 6" Subwoofer

    Optimal Audio Subwoofer Extension Kit - 1x 6" Subwoofer

    Delivery in 1-3 days

    The Optimal Audio OAPAK-19 is a dedicated low-frequency extension kit designed to enhance existing Optimal Audio background music systems. Engineered for venues that require greater depth and impact at lower frequencies, this kit provides a simple and scalable method of introducing sub-bass reinforcement without redesigning the core audio system. OAPAK-19 pairs the Optimal Audio SUB6 6" subwoofer with the Smart Amp 10, creating a self-contained low-frequency reinforcement solution that integrates seamlessly with existing Optimal Audio ZONE or Smart Amp-based installations. Thanks to power sharing between the output channels, the Smart 10 amplifier will auto-configure full power to the single connected subwoofer, offering a cost-effective but high quality option to extend bass frequencies in a BGM system. Nothing else should be connected to the secondary output channel on the amplifier to power the subwoofer adequately. The subwoofer is avaibale in both black and white. Designed as an add-on rather than a standalone system, the kit allows integrators to introduce controlled bass extension to background music systems in restaurants, bars, hospitality venues and retail environments where fuller sound is desired. Flexible mounting options are supported via the included wall bracket for the subwoofer, while rack ears are supplied for amplifier integration in AV racks or back-of-house installations. To complete installation, only balanced twin-conductor audio cable (microphone cable) is required to feed audio to the Smart Amp 10. This is available by the metre in black, allowing precise specification for each project.

    Delivery in 1-3 days

    £1,379.00

  • Optimal Audio Wall Speaker Extension Kit - 6x 5" Wall Speakers

    Optimal Audio Wall Speaker Extension Kit - 6x 5" Wall Speakers

    Delivery in 1-3 days

    The Optimal Audio OAPAK-18 is a high-coverage add-on speaker kit designed to extend existing Optimal Audio systems built around the ZONE series mixer-amplifiers. Developed for commercial venues requiring broader sound distribution and increased audio presence, this kit offers a robust and scalable solution using high-output surface-mount loudspeakers. OAPAK-18 is powered by the Optimal Audio Smart Amp 10 and features six CUBOID5-TX surface-mount loudspeakers, delivering strong output, improved low-frequency response and wide, even coverage. The system is designed to operate as a 100V line configuration, making it well suited to distributed audio applications where speaker quantity, cable efficiency and future scalability are key considerations. As part of the OAPAK add-on range, this kit integrates seamlessly with any existing Optimal Audio ZONE-based installation, providing dedicated amplification and expanded loudspeaker coverage without altering the core system. To complete installation, only balanced twin-conductor audio cable (microphone cable) is required to feed audio to the Smart Amp 10. This is available by the metre in black, allowing precise specification for each project.

    Delivery in 1-3 days

    £1,819.00

  • Optimal Audio Wall Speaker Extension Kit - 4x 5" Wall Speakers

    Optimal Audio Wall Speaker Extension Kit - 4x 5" Wall Speakers

    Delivery in 1-3 days

    The Optimal Audio OAPAK-17 is a streamlined add-on speaker kit designed to expand existing Optimal Audio systems built around the ZONE series mixer-amplifiers. Targeted at venues requiring increased audio presence without deploying a larger speaker array, this kit offers a balanced approach to coverage, output and installation efficiency. OAPAK-17 is powered by the Optimal Audio Smart Amp 10 and includes four CUBOID5-TX surface-mount loudspeakers, delivering strong output and enhanced low-frequency performance in a compact deployment. The system is designed to operate either as a 100V line or low impedance system, making it ideal for distributed audio applications where reliability, cable efficiency and scalability are priorities. As with the wider OAPAK add-on range, this kit integrates seamlessly into existing ZONE-based installations, adding dedicated amplification and loudspeaker coverage without impacting the primary system configuration. To complete installation, only balanced twin-conductor audio cable (microphone cable) is required to feed audio to the Smart Amp 10. This is available by the metre in black, allowing precise specification for each project.

    Delivery in 1-3 days

    £1,579.00


You have seen 12 out of 17 products

Audio expansion kits are designed to extend or upgrade existing sound systems by adding additional speakers, amplification, or coverage areas. Rather than replacing your current setup, these kits allow you to scale your system to suit changing requirements, whether that’s expanding into new rooms, increasing output, or improving overall coverage.

The AV Barn offers a range of audio expansion kits suitable for hospitality venues, retail spaces, education environments and commercial premises. Each kit includes commercial loudspeakers along with the essential components required to integrate seamlessly with an existing system, such as speaker cable and connection leads where required.

Expansion kits are commonly used to extend audio into new rooms, outdoor areas or additional zones while maintaining consistent sound quality across the entire venue. Many systems are designed to work with standard 100V line or low impedance installations, allowing installers to scale systems efficiently as business requirements grow.

These professionally matched kits provide a practical solution for expanding background music systems, paging systems or public address installations without the complexity of a full system redesign.

If you are unsure which expansion kit is compatible with your existing system, use our AV system design page to submit your requirements and our team will recommend a suitable solution.

© 2026 The AV Barn is a trading name of Essex Sound & Light Limited.

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