Martin Audio O-Line – 2x3.5" Passive Micro Line Array

Product Overview

The Martin Audio O-Line is an award-winning modular passive micro line array designed for architecturally sensitive fixed installations in houses of worship, conference centres, museums, transport terminals, and auditoriums. Its 2x3.5" driver complement and slim-profile enclosure deliver the focused, controlled coverage of a scalable line array loudspeaker in a form factor that integrates discreetly into virtually any interior environment. O-Line combines innovative acoustic design with Martin Audio's DISPLAY optimisation software to achieve coverage accuracy over a precisely defined listening area, making it a direct alternative to distributed ceiling systems in spaces where a single-source line array approach is acoustically superior. AV system designers and integrators specifying for intelligibility-critical or aesthetically constrained installations will find O-Line an exceptionally versatile and high-performance solution.

Product Description

The Martin Audio O-Line is a modular micro line array engineered to solve coverage challenges in spaces where a full-scale commercial line array system is physically impractical and a distributed ceiling speaker array produces insufficient intelligibility or musical quality. Each O-Line module houses two 3.5" drivers in a sidelobe-free vertical dispersion configuration, allowing precise focus of sound energy onto the intended listening zone without wasteful spill onto walls, ceilings, or reverberant surfaces. The modular design allows integrators to specify and deploy the number of elements appropriate to the coverage requirement, with array configuration calculated and optimised in Martin Audio DISPLAY software. DSP-driven array optimisation provides per-element delay, level, and EQ control, which is critical in architecturally complex spaces such as fan-shaped auditoria, high-ceiling sanctuaries, and long narrow transport terminals where uniform coverage from a single array position demands careful vertical pattern management. O-Line's architecturally sympathetic enclosure design is available in finishes that complement interior schemes, and the slim profile ensures minimal visual impact even in landmark or heritage buildings. Applications include houses of worship prioritising speech intelligibility and musical reproduction, conference centres and lecture theatres, museums and interpretation spaces, transport terminals, multi-purpose auditoria, and any commercial installation where discreet deployment and precision coverage are both required. Browse the full Martin Audio range at Creation Networks — Martin Audio.

Key Features

• Modular Micro Line Array Format — Scalable element count allows integrators to match the array length precisely to the venue's coverage requirement and throw distance.
• Dual 3.5" Drivers Per Module — Compact but acoustically capable driver complement suited to speech intelligibility and high-quality music reproduction in smaller to medium venues.
• Sidelobe-Free Vertical Dispersion — HF section design eliminates the vertical sidelobes that conventional line arrays produce, keeping sound energy focused on the audience and off reverberant surfaces.
• DISPLAY Software Optimisation — Full acoustic prediction and DSP-driven per-element delay, level, and EQ for precise coverage over a defined listening zone.
• Architecturally Sympathetic Design — Slim profile and available finish options allow discreet integration into heritage, landmark, or design-sensitive interiors.
• Speech and Music Capability — Frequency response suitable for both critical speech intelligibility and high-quality music reproduction in the same installation.
• DSP-Optimised Array Configuration — Additional DSP functionality beyond basic array shaping provides increased coverage consistency and pattern control for complex spaces.

Typical Applications

• House of worship — intelligibility-critical and aesthetically constrained sanctuaries
• Auditorium, lecture theatre, and conference centre
• Museum and heritage interpretation space
• Transport terminal and public address environment
• Multi-purpose government and civic space
• Corporate all-hands room and boardroom

Technical Specifications

Frequently Asked Questions

How does O-Line compare to a distributed ceiling speaker system?

O-Line delivers a coherent line array wavefront from a single or small number of array positions, producing a more consistent listening experience and superior imaging compared to a distributed ceiling grid. In rooms where ceiling access is limited or where a single-source acoustic experience is preferred, O-Line is often the superior specification.

How many O-Line modules are required for a typical installation?

The number of modules depends on the venue's throw distance, room geometry, and required coverage angle. Martin Audio DISPLAY software calculates the optimal array configuration for each specific installation, including element count, splay angles, and per-element DSP settings.

What amplification is required for O-Line?

O-Line is a passive system requiring external amplification with DSP processing. Martin Audio's amplifier and DSP solutions are the recommended platform for full DISPLAY software integration.

What does sidelobe-free vertical dispersion mean in practice?

Conventional line arrays can produce spurious high-frequency energy lobes above and below the intended coverage angle. O-Line's HF driver configuration eliminates these sidelobes, keeping sound energy focused on the audience zone and reducing energy reaching reflective surfaces such as rear walls and high ceilings.

Is O-Line suitable for spaces where visual impact must be minimised?

Yes. O-Line's slim enclosure profile and architectural finish options make it one of the most discreet line array solutions available for heritage buildings, houses of worship with design restrictions, and corporate interiors.

Can O-Line reproduce music as well as speech?

Yes. O-Line is designed for both critical speech intelligibility and high-quality music reproduction, making it suitable for houses of worship, performing arts venues, and multi-purpose spaces with mixed programme requirements.

What warranty applies to the Martin Audio O-Line?

Martin Audio products purchased through Creation Networks carry the manufacturer's standard warranty. Contact Creation Networks for warranty and service support information.