Technologies
The Ion-Plasma Tweeter
The Ion-Plasma Tweeter is designed to recreate the most accurate, fastest and most sophisticated sound compared to the existing speakers in the world. When operating, the ion-beam fires plasma into oxygen in the air which can produce reactive by-products, Acapella is the only speaker company that eliminates this problem and is certified for health safety by the European Union (EU). In this way, the Acapella ion tweeter is able to reproduce sound without membrane and without mass. In terms of transient capabilities and phase stiffness, the obtained sound quality cannot be realised by using conventional tweeters. With virtually zero mass, the ion tweeter can reproduce frequencies as high as 100 kHz, though in this case, it's limited to 30 kHz.
The Spherical Horn
Though the senior firm of the two, Acapella is actually not nearly as internationally famous as their colleagues at Avantgarde Acoustic. Both German companies are in the hornspeaker business but Acapella, as the older one, claims credit for being the spherical horn inventors (they began in 1978). The Avantgardists under the lead of Matthias Ruff meanwhile produce strikingly similar horns.
Products
Acapella Campanile MKII
Specifications:
Efficiency: 93 dB/1W/1m
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Impedance: 8 Ohm
Frequency Response: 20 Hz to 40 kHz
Power handling: 200 watts (Peak handling of 1000 watts at 10 ms with no distortion)
Recommended power output of the amplifier: from 15 watts
Overall Dimensions: 94.5" x 28.5" x 38" (HxWxD)
Weight: 550 - 650 lbs. per speaker
Acapella LaCampanella Alto MKIII
Specifications:
Frequency Response: 20 Hz to 40 kHz
Efficiency: 95 dB/1W/1m
Power Handling: 100 watts (Peak handling of 1000 watts at 10 ms with no distortion)
Recommended power output of the amplifier: 15 watts
Dimensions: 88" x 16" x 27" (HxWxD)
Weight: 352 lbs. per speaker
Acapella Sphaeron Excalibur
Specifications:
Efficiency: 100 dB/1W/1m
Power handling: 100 watts (Peak handling of 1000 watts at 10 ms with no distortion)
Recommended power output of the amplifier from: 15 watts
Dimensions: 90.5" x 59" x 51.2" (HxWxD)
Weight: 1364 lbs. per Speaker
Acapella ION TW 1S Ionic Plasma Tweeter
Specifications:
Sensitivity: 1.5 V / 0 dB (active tweeter)
Impedance: 600 ohm
Max Sound Pressure level: 110 dB, 1 m / 1 ms
Slope Input Filter: approx. 12 dB / Octave
Frequency Response: 5 kHz - 50 kHz (variable crossover frequencies)
Mains Voltage: 110–120 V / 60 Hz
Dimensions: 150 x 300 x 260 mm / 5.91 x 11.81 x 10.24" (H xWxD)
Weight: 15 kg. / 33 lbs.