Funktion-One RES 2U Mk2 – Fully Horn-Loaded Point Source Loudspeaker (Resolution Series)

The Funktion-One RES 2U Mk2 is a legendary fully horn-loaded 3-way point source loudspeaker designed for high-efficiency, high-impact sound reinforcement with exceptional clarity and dynamic response. As part of the Resolution Series, it represents a refined evolution of the iconic RES 2 platform, adapted for modern touring, club systems, and installations where precision and musicality are critical.

The RES 2 design has earned long-standing recognition in professional audio because of its ability to deliver powerful, coherent sound from a relatively compact enclosure, combining horn-loaded efficiency with natural tonal balance and minimal reliance on heavy DSP correction.

---

Key Specifications

Configuration: Fully horn-loaded 3-way point source loudspeaker

Drivers:

• 1 × 15″ LF driver (horn-loaded bass section)
• 1 × 8″ MF driver (horn-loaded midrange)
• 1 × 1″ HF compression driver

Frequency Response (–3 dB):

• ~60 Hz – 18 kHz

Sensitivity:

• Extremely high efficiency (above 100 dB typical across bands)

Power Handling (AES):

• LF: ~400 W
• MF/HF combined: lower power requirements due to horn efficiency

Nominal Impedance:

• Multi-section (bi-amp configuration typical)

---

Physical & Mechanical Details

Construction: Birch plywood enclosure with touring-grade finish
Design: Fully horn-loaded internal architecture

Grille:

• Protective steel grille

Rigging & Mounting:

• Integrated M10 flypoints
• Compatible with yokes, flying systems, and ground stacking
• Optional wheelboard for touring use

Dimensions & Weight:

• Weight: ~48 kg
• Form factor optimized for compact high-output systems

Connectors:

• 2 × NL4 Speakon connectors

---

Key Features & Configuration

Fully Horn-Loaded Design:
Unlike conventional speakers, the RES 2U Mk2 uses horn loading across all frequency bands, resulting in:

• Extremely high efficiency
• Reduced distortion at high SPL
• Strong acoustic projection with minimal power

---

Three-Way System Architecture:
Dedicated LF, MF, and HF sections ensure:

• Accurate frequency separation
• High clarity in vocals and instruments
• Smooth transitions across the spectrum

---

Compact High-Output Performance:
Despite its size, the RES 2U Mk2 delivers:

• High SPL capability
• Strong midrange presence
• Wide dynamic range

---

Minimal Processing Requirement:
Funktion-One systems are known for requiring less corrective EQ, relying instead on:

• Acoustic design
• Horn geometry
• Driver integration

---

Acoustic Performance & System Behavior

The RES 2U Mk2 is designed for dynamic, musical sound reproduction with strong transient response.

Performance Characteristics

• Exceptional midrange clarity (vocals and instruments)
• Fast transient response due to horn loading
• High output with low distortion
• Natural, “live” sound character

---

Field Insight

In real-world deployments:

• Systems sound “open” and highly dynamic
• Bass is tight but often supplemented with subwoofers for full-range extension
• Midrange projection remains clear even in large venues

Users often describe the system as delivering “club-grade energy with studio-like clarity”.

---

Dispersion & Coverage

Nominal Dispersion:

• Approx. 50° horizontal × 25° vertical

---

Practical Coverage Advantage

• Focused sound projection
• Reduced spill outside coverage area
• Ideal for controlled environments and directional sound systems

---

System Integration

The RES 2U Mk2 is typically deployed with:

• Funktion-One bass systems (F118, F218, BR series)
• External amplification (MC², Funktion-One amps)
• External DSP or crossover (XO2, XO4, or digital processors)

---

Typical System Configuration

• 2 × RES 2U Mk2 (left/right FOH)
• 2–4 × subwoofers (for extended low-end)
• External crossover and amplification

---

Result

• Full-range system with strong impact
• High clarity across all frequencies
• Scalable setup for different venue sizes

---

Typical Deployment Scenarios

Clubs & Electronic Music Venues:
Delivers the signature Funktion-One sound with tight, punchy response.

---

Touring Systems:
Used as a compact high-output alternative to line arrays.

---

Corporate & Event Systems:
Provides clarity and controlled coverage in medium-sized venues.

---

Hybrid Systems:
Integrated with larger Funktion-One systems as fills or main PA elements.

---

Ideal Applications

Nightclubs and DJ systems
Touring and festival systems
Live music venues
Corporate AV and events
Installations requiring high-efficiency loudspeakers

---

System Advantages in Practice

Efficiency:
High output with lower amplifier power requirements.

Clarity:
Exceptional midrange and vocal definition.

Control:
Directional dispersion reduces unwanted reflections.

Musicality:
Natural sound character with minimal DSP dependency.

---

Summary

The Funktion-One RES 2U Mk2 is a fully horn-loaded, high-efficiency loudspeaker delivering powerful, dynamic, and precise sound reproduction, making it a benchmark solution in professional audio.

---

Bottom Line

For professional audio systems in Europe, the RES 2U Mk2 offers a unique combination of efficiency, clarity, and musical performance, making it ideal for applications where sound quality and impact matter more than system complexity.