Funktion-One F115 Mk2 – Bass Reflex Subwoofer (Compact High-Efficiency System)

The Funktion-One F115 Mk2 is a compact, high-performance bass reflex subwoofer designed to deliver tight, punchy low-frequency response with excellent efficiency and clarity. It is part of the Funktion-One bass range and is engineered for applications where space efficiency, musical accuracy, and controlled low-end are essential.

Developed by Funktion-One, the F115 Mk2 is widely used across Europe in clubs, touring systems, and installations, particularly in environments where fast, articulate bass is preferred over excessive sub-bass extension.

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Key Specifications

Configuration: Bass reflex subwoofer

Driver:

• 1 × 15″ high-excursion low-frequency driver

Frequency Response (typical):

• ~45 Hz – 200 Hz

Sensitivity:

• High-efficiency design (typically above 100 dB)

Max SPL (1 m):

• High output suitable for compact systems

Power Handling:

• Approx. 500–1000 W RMS (depending on system configuration)

Nominal Impedance:

• 8 Ω

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Physical & Mechanical Details

Construction: Birch plywood enclosure with touring-grade finish
Grille: Steel protective grille

Handles & Mobility:

• Integrated handles for easy transport
• Compact footprint for flexible placement

Dimensions (H × W × D):

• Approx. 560 × 500 × 600 mm

Weight:

• Approx. 30–35 kg

Connectors:

• Speakon connectors (NL4 / NL8 depending on configuration)

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Key Features & Configuration

Compact Bass Reflex Design:
The F115 Mk2 uses a reflex-loaded enclosure to deliver tight, responsive bass while maintaining a compact cabinet size, making it ideal for installations with limited space.

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High Efficiency Output:
Designed to produce strong output with relatively low amplifier power, ensuring efficient system performance and reduced energy consumption.

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Fast Transient Response:
The 15″ driver provides quick and accurate bass reproduction, making it particularly suitable for:

• Electronic music
• Live instruments
• Club environments

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Scalable System Integration:
Multiple F115 Mk2 units can be combined to:

• Increase low-frequency output
• Extend coverage
• Adapt to different venue sizes

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Acoustic Performance & System Behavior

The F115 Mk2 is designed for musical and controlled bass reproduction rather than extreme sub-bass extension.

Performance Characteristics

• Tight and punchy low-end
• Fast transient response
• Clear bass definition even at high SPL

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Field Insight

In real-world club systems:

• Bass feels “tight” and controlled rather than overwhelming
• Kick drums and basslines remain clearly defined
• Systems require less corrective EQ due to natural response

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System Integration

The F115 Mk2 is typically used with:

• Funktion-One mid/high loudspeakers (Resolution or Evolution series)
• Larger bass systems (F118, BR series) for extended low-end
• External amplifiers and DSP (Funktion-One or third-party processing)

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Typical System Setup

• 2–4 × F115 Mk2 for small to medium systems
• 4–8 × units for larger club or event setups
• Combined with higher-output subs for full-range systems

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Deployment Options

Ground-Stacked Sub Arrays:
Most common configuration for clubs and events.

Distributed Bass Systems:
Multiple units placed strategically for even coverage.

Hybrid Bass Systems:
Used alongside larger subs to handle upper bass frequencies.

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Ideal Applications

Clubs and DJ systems
Electronic music venues
Touring sound systems
Corporate and event sound reinforcement
Installations requiring compact bass solutions

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Performance Advantages in Practice

Clarity:
Bass remains defined and musical even at high levels.

Efficiency:
High output relative to cabinet size.

Flexibility:
Works as standalone or part of larger bass systems.

Control:
Reduced boominess compared to larger subwoofer designs.

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Summary

The Funktion-One F115 Mk2 is a compact, high-efficiency bass reflex subwoofer delivering tight, controlled low-frequency performance with excellent clarity and flexibility.

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Bottom Line

For professional audio systems in Europe, the F115 Mk2 provides a balanced low-frequency solution, ideal for applications where precision, efficiency, and compact design are more important than extreme sub-bass extension.