BSB118 BishopSound 18" Passive Subwoofer

BishopSound 18-Inch Passive Subwoofer – Powerful, British-Engineered Sub Bass

The BishopSound BSB118 18-inch Passive Subwoofer delivers deep, precise bass with the reliability and clarity that professional audio environments demand. Featuring the BWP18 cast alloy 18-inch driver with a 5-inch (125mm) voice coil, housed in a rugged 18mm birch plywood enclosure with a durable black finish, the BSB118 is built to perform, endure, and impress.

A British-made perforated, impact-resistant powder-coated metal grille protects the driver, while optimised ports enhance efficiency and minimise turbulence, ensuring clean, punchy bass at every volume. Designed and manufactured in Great Britain, the BSB118 prioritises longevity, reliability, and authentic British sound, in stark contrast to subwoofers made overseas from lower-quality materials.

Every BishopSound product features a Digital Product Passport powered by Tazaar, supporting a net-zero, low-carbon, circular economy. Manufactured in solar-powered, sustainable factories, the BSB118 combines professional-grade performance with environmental responsibility

The BishopSound 18” Subwoofer is fitted on the top is an M20 1.4” (35 mm) pole-mount fitting for seamless integration with other loudspeakers.

Ergonomic side handles make handling easy, and rubber feet on the base align with top-surface recesses to provide secure, stable stacking.

When paired with the BishopSound Twin 8, frequencies between 30Hz and 20,000Hz can be delivered to an audience, embracing the rich, true and moving British sound that is globally recognised.

Because of its substantial build, this product will be shipped on a pallet for safe transport. To celebrate the launch of our new 18" subwoofer, delivery is on us. 

Engineered for Versatility and Ease of Use

The BSB118 is designed for flexible deployment:

• Pole-mounted via the top M20 35mm fitting for seamless integration with other loudspeakers
• Ergonomic side handles for easy handling
• Rubber feet and top-surface recesses for secure, stable stacking
  

Paired with the BishopSound Twin 8, the system delivers a full frequency response from 30Hz to 20kHz, producing the rich, true, moving British sound that has become globally recognised.

Applications for Every Professional Environment

Portable Sound Reinforcement
Optimised for use with 15”, 12”, 10”, and Twin 8” speakers. Crossover points are set between 96Hz and 105Hz, depending on the venue and room size. Outdoor setups may require additional cabinets for consistent coverage.

Live Music Clubs & Stages
Hidden under seating or flown in corners, the BSB118 enhances the listening experience at any volume, delivering tight, musical bass.

Bars, Restaurants & Hospitality
Non-directional sub-bass ensures placement flexibility, delivering warm, rich, immersive low-end that keeps audiences engaged without overpowering the room.

Nightclubs & Dance Venues
Equipped with the BWP18 cast-alloy driver, the BSB118 handles extreme dynamics with exceptional cooling, producing bass that punches and energises the dance floor.

Corporate AV, Conferences & Event Hire
With 18mm birch plywood enclosures and Neutrik Speakon connections, the BSB118 provides durable, reliable performance for rental companies operating in competitive, high-demand markets.

Weddings, Parties & Festivals
Portable, easy to manoeuvre, and powerful, the BSB118 keeps dance floors full and delivers the consistent, punchy sound that DJs and bands trust.

Houses of Worship, Leisure Centres & Retail Outlets
Designed for audiences to feel the sound, not just hear it, the BSB118 delivers rich, immersive bass, trusted by generations of venues worldwide.

Features

• Compact, direct-radiator subwoofer
• 1 x 18” (460mm) driver with 5” (125mm) voice coil
• Peak SPL of 138dB (146dB for crest factor 4)
• 18mm durable plywood enclosure
• Slot ports for reduced air noise
• Perforated powder coated metal grille
• M20 / 1.4” (35mm) Top located pole-mount socket
• 8Ω nominal impedance
• Integral ergonomic handles
• Two NL4 connectors