Dolby CS136LF – Dual 15-Inch Low-Frequency Screen Speaker

What is the Dolby CS136LF?

The Dolby CS136LF is a dual 15-inch low-frequency screen channel speaker and the LF component of the Dolby Systems 131, 133 and 136. It is hand-built from quality wood and uses two high-performance 15-inch transducers designed with Finite Element Modeling (FEM). Massive magnetic motors and cast-aluminum baskets give it low distortion and deep, faithful bass.

How does the Dolby CS136LF work?

The two 15-inch drivers use 4-inch copper voice coils, FEM-optimized motors and suspensions, cooling systems and resonance-free cast-aluminum baskets. Exceptional internal bracing and a finely tuned port design reduce distortion and support years of dependable service. The cabinet covers 31 Hz to 400 Hz with 28 Hz usable response.

Rated at 1400 W @ 74.8 Vrms with 102 dB sensitivity, a single CS136LF reaches 133 dB continuous and 142 dB measured peak SPL at one metre. The advanced input plate's flip card selects 4-ohm parallel wiring or 8-ohm bi-wire operation. In System 136 two cabinets stack, with the lower unit run under Dolby's separate processing values at 900 W @ 60 Vrms.

Balance-centered handles, a shallow cabinet and a side-loading input plate make unpacking, installation and service easier. Pair it with a Dolby CP950A processor and a Dolby Multichannel Amplifier such as the DMA32301.

What are the key features of the Dolby CS136LF?

• FEM-designed 15-inch drivers — two high-performance woofers with massive motors and cast-aluminum baskets.
• 1400 W power handling — 133 dB continuous output from a single cabinet.
• Flip-card input plate — choose 4-ohm parallel or 8-ohm bi-wire operation.
• Braced, hand-built wood cabinet — tuned ports and internal bracing reduce distortion.
• Service-friendly design — balance-centered handles and a side-loading input plate simplify handling and access.
• Stackable — BKT.136 tie plates join cabinets in System 136; BKT.FLR floor brackets are sold separately.

Where is the Dolby CS136LF typically used?

• Premium large-format cinema auditorium
• Cinema auditorium (medium to large)
• Auditorium
• House of worship

Technical Specifications

Frequently Asked Questions

Which Dolby systems use the CS136LF?

One CS136LF forms the low end of System 131 (with the CS131MH) and System 133 (with the CS136MH). System 136 uses two CS136LF cabinets with one CS136MH.

Is it compatible with Dolby Atmos and the CP950A?

Yes. It is part of Dolby's immersive screen speaker line and runs from processors such as the CP950A or CP950 through Dolby Multichannel Amplifiers.

How is it wired?

The flip card selects 4-ohm parallel operation on one channel or 8-ohm bi-wire operation. Creation Networks matches the wiring to the amplifier plan.

How are stacked cabinets secured?

BKT.136 tie plates, included with the CS136MH, join stacked CS136LF cabinets, and the BKT.FLR floor-bracket kit (sold separately) anchors the stack to the floor.

What warranty and support are available?

The CS136LF carries Dolby's manufacturer warranty, confirmed with your quote. Creation Networks designs, installs and supports Dolby screen systems; see the Dolby Professional collection and request a quote.