Avantgarde-Acoustic Opus 1 - Powered Hornspeaker

OPUS 1 – fully active horn loudspeakers

The OPUS 1 from Avantgarde Acoustic combines precise loudspeaker technology with powerful amplification to create a fully active, elegant system. Developed in their factory in the Odenwald region of Germany, the OPUS 1 stands for the highest precision, quality, and durability. The system embodies the brand's core values: passion, innovation, perfection, and acoustic purity.

With over 35 years of experience in the development of highly efficient loudspeakers, the OPUS 1 combines dynamics, precision and emotional sound impact in a compact, minimalist design.

Mid-high range:

The spherical wave horn, measuring 350 mm in diameter and 150 mm in depth, covers a frequency range from 700 Hz to 20 kHz. The OH1 1-inch driver with its lightweight ring diaphragm ensures high resolution, fast response, and precise dynamics without tonal beaming.

Bass & Amplification:

The OBM10 10-inch low-midrange driver delivers powerful, linear bass with excellent damping and minimal distortion. A large bass reflex port enhances low-frequency reproduction and control.
Amplification is provided by the integrated OAmp1-250 module: 10 W Class A/B for mid/high frequencies (first watt in Class A) and 250 W Class D for the bass. A DSP enables precise crossover management and flexible bass tuning. Firmware updates and future control functions are available via over-the-air (OTA) access.

Case & Design:

The MDF and aluminum housing combines stability and acoustic damping. The matte black or white finish with a brushed metal front panel underscores the minimalist design. All connections are neatly integrated on the rear panel, and the solid aluminum base is equipped with glides and optional spikes.

Key Features:

• Fully active 2-way horn floorstanding loudspeakers
• 13.8” spherical horn (700–20,000 Hz)
• OH1 1” compression tweeter, 103 dB/W/m efficiency
• OBM10 10” inverted paper cone low-midrange driver
• Bass reflex with optimized airflow
• OAmp1-250 Class A/B + Class D amplification
• DSP control with OTA access
• MDF/aluminium housing, solid aluminum base

Technical data

SYSTEM DATA

• Frequency range: 35 – 20,000 Hz
• Crossover frequency: 700 Hz
• Recommended room size: > 15 m²

ACOUSTIC DESIGN

• Design: 2-way system
• Bass reflex: large port, radiating to the rear
• Mid-high range: spherical horn

HOUSING

• Material: MDF & Aluminum
• Surface finishes: matte white & silver anodized, matte black & black anodized
• Base: POM glides, adjustable spikes

BASS-MIDDLE DRIVER

• Driver size: 10”, die-cast basket
• Number of drivers: 1
• Impedance: 8 ohms
• Voice coil: 3”
• Membrane: concave paper cone, double-folded edge
• Power handling capacity: 350 watts

MEDIUM-HIGH DRIVERS

• Driver size: 1” compression driver
• Membrane: ring emitter, polyester
• Efficiency: 103 dB/W/m

AMPLIFIER MODULE

• Bass output power: 250 W @ 8 ohms
• Medium/High output power: 10 W AB operation (1 W Class A)
• Mid-high crossover: 12 dB/octave
• Bass-midrange crossover: digital/DSP
• DSP bass adjustment: 2-band, via rear control buttons
• DSP room adaptation: OTA software tool
• Line level input: 1 x XLR (10 kOhm)
• Trigger input: 12 VDC

DIMENSIONS / WEIGHT

• Height: 110 cm (including spikes + 2.5 cm)
• Width: 35 cm (32.5 cm for the casing only)
• Depth: 36 cm
• Standard back tilt (without spikes): 2.7° (adjustable via spikes)
• Weight: 39 kg