Martin Audio CDD15B – 15" Passive Coaxial On-Wall Speaker (Black)

Product Overview

The Martin Audio CDD15B is a high-output passive two-way loudspeaker designed for medium-to-large room installations that demand maximum sonic performance from a single enclosure in black (RAL9005). Its coaxial drive unit combines a powerful 15" (380mm) / 3" (75mm) voice coil LF driver with a 1.4" (35mm) exit HF compression driver fitted with a 3" pure titanium diaphragm, delivering exceptional output capability and wide dynamic range from a birch plywood enclosure. The CDD15B targets installations in houses of worship, auditoriums, multi-purpose rooms, and large commercial venues where very high SPL and Coaxial Differential Dispersion coverage consistency are both required. Explore the full Martin Audio loudspeaker range at Creation Networks.

Product Description

The Martin Audio CDD15B occupies the top position within the CDD Indoor passive range, combining the Coaxial Differential Dispersion coverage technology found across the series with a driver assembly scaled for high-power, large-room applications. The 15" LF driver uses a 3" voice coil and a powerful motor system, while the HF section employs a 1.4" exit compression driver with a 3" pure titanium diaphragm — a material choice that combines high thermal tolerance with low mass for extended high-frequency response and reduced distortion under sustained high-SPL operation. The birch plywood enclosure reflects the acoustic demands of the larger driver complement, providing the enclosure stiffness and mass needed to control resonance at the power levels the CDD15B handles. As with other CDD models, the coaxial driver achieves point-source summation at the crossover frequency, eliminating off-axis frequency response irregularities in the transition band. The static waveguide maintains the Differential Dispersion pattern through the high-frequency range, preventing the HF beaming that narrows the effective coverage area of conventional large-format coaxials. The user-rotatable drive unit allows the installer to select horizontal or vertical dispersion orientation by removing the screw-free perforated steel grille. The CDD15B can be suspended via eyebolt mounts built into the enclosure or fitted with an optional horizontal yoke for bracket mounting, providing installation flexibility in venues with varied rigging infrastructure. The speaker operates at 8Ω nominal impedance and should be driven with a compatible system controller providing appropriate limiter settings — the Martin Audio DX4.0 or iKON amplifier platform with factory-tuned DSP and FIR presets is the preferred deployment. All specifications are sourced from the existing Martin Audio documentation; contact Creation Networks for full datasheet access and system design support.

Key Features

• 15" / 3" Voice Coil LF Driver — High-excursion large-format LF driver delivers the output and low-frequency extension required for medium-to-large room coverage.
• 1.4" Exit / 3" Pure Titanium Diaphragm HF Driver — Titanium diaphragm combines low mass with high thermal tolerance for extended high-frequency response and sustained high-SPL performance.
• Coaxial Differential Dispersion Technology — Point-source LF/HF summation and front-to-rear SPL compensation deliver consistent coverage across the listening area in large rooms.
• Static HF Waveguide — Maintains dispersion pattern through the high-frequency range, eliminating the progressive HF beaming of conventional large-format coaxials.
• User-Rotatable Drive Unit — Horizontal or vertical dispersion selectable in the field without tools by removing the screw-free grille.
• Birch Plywood Enclosure — High-stiffness plywood construction provides the structural rigidity needed to control enclosure resonance at large-format driver excursion levels.
• Eyebolt Suspension Points — Integral inserts for eyebolt rigging support grid and ceiling suspension in auditoriums and large venues.
• Optional Horizontal Yoke — Bracket mount option for installations without rigging infrastructure.
• DX4.0 and iKON Amplifier Compatibility — Factory DSP and FIR presets available for optimized frequency response and integrated limiter protection at high output levels.
• Black (RAL9005) Finish — Standard black textured finish; white variant available as CDD15W. Custom RAL colours available to order.

Typical Applications

• House of worship
• Auditorium
• Multi-purpose room
• All-hands room
• Commercial meeting space

Technical Specifications

Frequently Asked Questions

What makes the CDD15B suitable for large rooms?

The CDD15B's 15" LF driver with a 3" voice coil and 1.4" exit HF compression driver with a titanium diaphragm provide the output capacity and dynamic range needed to cover medium-to-large rooms at full-program levels. The Coaxial Differential Dispersion pattern distributes that output consistently from front to rear of the listening area, reducing the need for multiple delay fill systems in many single-speaker-per-zone designs.

Why is a birch plywood enclosure used instead of composite material?

Birch plywood offers higher stiffness-to-weight ratio than composite materials at the cabinet volume required by a 15" driver complement. For a large-format loudspeaker operating at high excursion levels, enclosure rigidity is critical to controlling resonance and maintaining low distortion. Smaller CDD models (CDD5 through CDD10) use composite materials at the reduced volumes those drivers require.

What amplifier and controller should be used with the CDD15B?

Martin Audio recommends the DX4.0 networked system controller paired with an iKON amplifier, which provides factory-tuned DSP and FIR presets for the CDD15B along with integrated limiter settings to protect the system at high output levels. A compatible third-party amplifier with appropriate limiter protection may also be used.

Can the CDD15B be suspended from a ceiling grid?

Yes. The enclosure includes integral inserts for eyebolt suspension, allowing the speaker to be hung from rigging points in auditoriums and large venues. An optional horizontal yoke bracket is available for installations without ceiling grid infrastructure.

Is the CDD15B suitable for speech reinforcement applications?

Yes. The point-source coaxial driver and Differential Dispersion coverage pattern maintain consistent frequency response across the audience area, which is important for speech intelligibility in reverberant rooms such as auditoriums and houses of worship. For voice-primary applications, consult Martin Audio's system design resources or contact Creation Networks for DSP preset guidance.

What is the difference between the CDD15B and CDD15W?

The CDD15B and CDD15W are acoustically identical. The CDD15B ships in black (RAL9005) and the CDD15W in white (RAL9016). Both are available at Creation Networks.

What warranty applies to the CDD15B?

Martin Audio products carry a standard manufacturer warranty. Contact Creation Networks at creationnetworks.net for current warranty terms and dealer support.