Dolby 118-I-BK – 18-Inch Flyable Installation Subwoofer

What is the Dolby 118-I-BK?

The Dolby 118-I-BK is a high-performance, flyable 18-inch subwoofer for cinema auditoriums and professional installations. Integrated rigging points let it hang from the ceiling or a side wall, which makes it a strong choice for bass-management surround duty in Dolby Atmos rooms. Its 18-inch driver uses a neodymium magnet structure for low weight and a high-temperature voice coil with a large Xmech rating for reliable operation.

How does the Dolby 118-I-BK work?

In a Dolby Atmos auditorium the cinema processor routes low-frequency content from the surround and overhead arrays to bass-management subwoofers. The 118-I-BK fills that role from an elevated position, close to the surround speakers it supports. It is a passive cabinet driven by an external amplifier channel at 8 ohms and is rated at 600 W (64 V).

The operating range is 35 Hz to 160 Hz with 99 dB sensitivity, and the calculated maximum output is 127 dB continuous and 133 dB peak at one metre. Angled woofer placement keeps the front surface area small, so the cabinet is less visually intrusive on the wall. The 13-ply wood enclosure is extensively braced, and sixteen M10-1.5 threaded inserts provide rigging points for flying or wall mounting.

Signal usually comes from a Dolby CP950A processor through a Dolby Multichannel Amplifier such as the DMA16302. Connections land on Dolby's advanced spring-loaded input plate.

What are the key features of the Dolby 118-I-BK?

• Flyable design — sixteen M10-1.5 threaded rigging points allow ceiling or side-wall suspension.
• Lightweight neodymium driver — the 18-inch woofer's neo motor keeps the cabinet at 82 lb.
• High-temperature voice coil — a large Xmech rating supports reliable operation at high output.
• Angled woofer — a minimal front surface area suits visible surround and overhead positions.
• Braced 13-ply wood cabinet — extensive internal bracing controls cabinet resonance.
• Spring-loaded input plate — Dolby's advanced input plate speeds wiring during installation.

Where is the Dolby 118-I-BK typically used?

• Dolby Atmos cinema auditorium
• Screening room
• Auditorium
• House of worship
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

Is the 118-I-BK suitable for Dolby Atmos bass management?

Yes. Dolby describes the 118-I-BK as well suited to bass-management surround duty in Dolby Atmos rooms, fed from a Dolby processor such as the CP950A or CP950.

How is the 118-I-BK mounted?

It has sixteen M10-1.5 threaded inserts for flying from the ceiling or mounting on a side wall. Rigging hardware and the structural support must be selected by a qualified installer following Dolby's owner's manual.

What amplifier does it need?

The 118-I-BK is passive with an 8-ohm nominal impedance and 600 W (64 V) power handling. A Dolby Multichannel Amplifier channel is a common choice.

Is there a dual-driver version?

Yes. The Dolby 218-I-BK uses two 18-inch drivers for 1200 W handling and 133 dB continuous output in the same flyable format.

What support does Creation Networks provide?

The 118-I-BK carries Dolby's manufacturer warranty, confirmed with your quote. Creation Networks designs, rigs, tunes and supports Dolby cinema systems; see the Dolby Professional collection and request a quote.