LMH Cornerhorn
Horn bass without compromise
The corner horn is a classic horn loudspeaker concept that deliberately uses the room boundaries as an integral part of the acoustic system.
Walls and floor form the final horn expansion, enabling efficient low-frequency reproduction with minimal diaphragm excursion.
LMH manufactures the corner horn as a mechanically rigid, precisely engineered loudspeaker system —
without simplification, without decorative compromises.
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Concept
The classic corner horn is a specific form of horn loudspeaker in which the bass horn path does not terminate in free space, but is acoustically extended via the room corner and adjacent walls.
The corner of the room becomes an integral part of the horn system, significantly increasing the effective horn length without requiring the loudspeaker itself to become excessively large. This room coupling enables high efficiency, minimal diaphragm excursion, and a solid, transient-accurate low-frequency reproduction — even with moderate amplifier power.
Designing a corner horn places particular demands on geometry, material quality, and mechanical precision. Folded horn paths and complex internal air volumes must be manufactured with great accuracy, as even small deviations can affect radiation behavior, transient response, and resonance characteristics.
At LMH, the focus is therefore on high-quality wood-based materials, rigid internal structures, and precise CNC manufacturing. Solid wood and multi-layer laminated plywood provide a combination of mechanical stiffness and internal damping that reduces internal reflections and unwanted resonant modes. Precisely guided contours and carefully executed transitions ensure that the bass remains controlled, clear, and robust — even at high sound pressure levels.
In this way, the LMH corner horn combines classical horn technology with modern manufacturing quality — not as a stylistic reference, but as a consistent, precise implementation of a proven principle.
Manufacturing & Materials
The LMH corner horn is manufactured entirely in the LMH workshop and follows a clear technical rationale:
mechanical stability, reproducible acoustic behavior, and structural integrity take priority.
All structural and acoustically relevant components are CNC-machined first and then manually finished.
The goal is not surface perfection at any cost, but a precise and repeatable realization of the acoustic geometry — because even millimeter-scale deviations can measurably affect radiation behavior and low-frequency performance.
For the enclosure and internal horn paths, high-quality wood-based materials are used, primarily European beech or birch plywood in thicknesses of up to 30 mm, and — depending on the configuration — solid wood.
These materials offer a balanced combination of high mechanical stiffness and internal damping, which is particularly advantageous in large-volume horn constructions.
Wall thicknesses are deliberately generous.
Mass and stiffness serve one purpose only: the reduction of structural resonances and the creation of a mechanically calm working environment for the driver and the enclosed air volume.
Resonances are not corrected electronically, but avoided by design.
For customers with the highest demands, this Classic model is also available in an uncompromising Panzerholz version — maximizing material quality, mechanical stability, and long-term dimensional integrity, without regard to effort or weight.
Special attention is given to the internal structure of the corner horn:
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Folded horn paths, deflections, and transitions are manufactured exactly according to CAD data.
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Edges, radii, and transition surfaces are designed to minimize unwanted reflections and local resonances.
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Bracing elements and internal connections are functionally positioned to increase structural stiffness without interfering with the acoustic path.
Surface finishes, wood species, and construction details are defined on a project-by-project basis — not as cosmetic variations, but as an integral part of the functional design.
The result is a corner horn that does not define itself through nostalgia or visual effects, but through acoustic substance, technical consistency, and long-term stability.
Who is the Cornerhorn for?
LMH Classic Line
High-frequency horn
System Architecture
The Eckhorn is designed as a classic corner horn loudspeaker system.
At its core is the principle of controlled sound radiation through defined horn paths, with the room-bounding surfaces forming an integral part of the acoustic function.
The system employs high-quality drivers, engineered for controlled excursion, low distortion, and stable reproduction within the relevant operating range.
Final driver selection is carried out on a project-specific basis in coordination with the customer.
In the complete system configuration, the acoustic alignment is finalized project-specifically.
The governing parameters are not conventional enclosure dimensions, but rather the acoustic coupling of the driver to the horn structure, the transition regions between the ways, and the mechanical integration.
Depending on the system configuration, the Eckhorn may be implemented either as a multi-way horn loudspeaker system aswell as supplementary low-frequency solution.
Due to its high efficiency and defined horn loading, the system integrates consistently into complex multi-way architectures.
The Eckhorn is deliberately not conceived as an effect-based enclosure, but as a functional acoustic system whose performance derives directly from room placement, horn geometry, and controlled wave propagation.
Design Driven by Acoustics
At LMH, design consistently follows acoustic function.
Material selection, surface treatment, and construction are not decorative elements, but integral parts of the mechanical and acoustic design.
Solid Wood – Where It Makes Sense and Remains Stable
Where it is structurally and acoustically meaningful, we also build enclosures from carefully selected solid woods.
We use only woods with proven long-term stability, defined density, and good internal damping, such as:
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Beech
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Maple
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Oak
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Ash
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Walnut
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Selected tropical hardwoods (project-dependent)
Solid wood is used deliberately – not universally – only where mass, stiffness, and resonance behavior benefit from it and where climatic influences remain controllable.
Veneer on Plywood – The Technically Preferred Solution
In many cases, veneered plywood is the acoustically and mechanically superior solution.
As a core material, we use high-quality beech or birch plywood with excellent dimensional stability and uniform resonance behavior.
This core is finished with real wood veneers in virtually any available species – chosen for visual reasons without sacrificing the structural advantages of plywood.
This construction offers:
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High long-term stability
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Low tendency to warp or crack
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Reproducible acoustic properties
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Free choice of wood appearance without structural drawbacks
At LMH, veneer is not a compromise, but a deliberately chosen high-end solution.
Stains & Wood Surfaces
Wherever possible, the natural wood structure remains visible.
We use:
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Transparent stains to emphasize the grain
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Oil and hardwax systems for open, lively surfaces
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Satin-matte lacquers with minimal film thickness
Surface finishes are defined on a project basis, matched to wood species, geometry, and acoustic targets.
Paint Finish (Optional)
Where it makes sense from a design or conceptual perspective, fully painted versions are also possible.
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Color selection in nearly all RAL shades
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Opaque or satin finishes
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Multi-layer, mechanically stable paint systems
At LMH, painted finishes are not a standard solution, but a consciously chosen alternative to wood or veneer surfaces.
Project-Specific Configuration
Every LMH product is configured on a project-specific basis.
Wood species, veneer, stain, or paint finish are integral parts of the overall design – not interchangeable accessories.
The goal is a permanently stable, mechanically quiet, and visually honest system that does justice to the respective loudspeaker or enclosure concept.
Technical overview
System
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Classic corner horn loudspeaker system
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Use of the room corner and adjacent walls as an acoustic horn extension
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Focus on high efficiency, controlled radiation, and solid low-frequency performance
Driver configuration
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15″ low-frequency driver
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Project-based driver selection in consultation with the customer possible.
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Available as enclosure only or complete system including drivers
Horn path & tuning
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Folded internal horn path with defined expansion
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Acoustic extension of the horn via the room corner
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Very high efficiency and low acoustic compression
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Tuning optimized for 15″ driver class and placement conditions
Operation
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Passive or active operation
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Particularly suitable for high-efficiency systems
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Well suited for tube and low-power amplifiers
Structural characteristics
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Precisely engineered horn geometry
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Defined wall thicknesses and rigid internal structure
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Mechanically calm, low-resonance construction
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Reproducible manufacturing
Dimensions & weight
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Approx. 85 × 102 (plus HF section) × 75 cm (W × H × D)
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90–120 kg
This Classic model is also available in a Panzerholz version for customers with the highest demands.
Dimensions and weight vary depending on driver selection, horn geometry, wall thicknesses, placement, and finish.
Pricing
Cabinet: from €4,500 per unit
Complete systems: from €12,000 per pair
Pricing depends on version, edition, wood species, and technical configuration
Inquiry & configuration
Each corner horn is manufactured on a project basis.
After your inquiry, we discuss execution, surface finish, and technical options and provide a non-binding quotation.
