Accuton Donau MK2 Floorstanding Speakers

Kit without cabinet, price per speaker

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Donau MK2 is a 3 Way high-end floorstanding speaker with closed bassrange system, ceramic midrange and air-motion-transformer.

The tweeter is the very linear Air Motion Transformer Audaphon AMT-1i with very low distorsion.

In the Donau MK2 kit the Accuton C173-6-191E is used as mids speaker.

This Accuton midrange speaker you can find in a lot of high quality speakers in the five digit price range.

The woofers are Wavecor SW182BD01 with 8 mm linear excursion and low distorsion balance drive technology. This woofers are very good to use in closed bass systems.

The crossover consists of a 3rd order high-pass filter (18 dB per octave slope) for the tweeter, a bandpass filter (12 dB high - and 12 dB lowpass) for the two mids.

The woofer is connected to a 2nd order low-pass filter. Between 40 Hz and 21000 Hz, the frequency response of this loudspeaker is very linear on axis.

The decay spectrum is nearly perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 0.4% above 500 Hz and below 0.6% at 95 dB at 1 m .

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Technical data:

• Impedance: 4 Ohm
• Sound pressure level (2.83V/1m): 82 dB
• Dimensions (HxWxD): 1100 x 240 x 350 mm
• Frequency range (-8dB): 31 - 30000 Hz
• Crossover frequency(s): 220, 2000 Hz
  
• Principle: closed box

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Highlights

• Accuton/Thiel C173-6-191E mids/woofer, one unit
• Audaphon AMT-1i
• 4x Wavecor Subwoofer SW182BD03, die cast, 4 Ohm
• 1,5x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
• 5x Damping Sonofil 100 x 35 cm for 20 litres
• Binding Post PK28 I, gold plated (one pair, red and black)
• 4m Speaker cable 2x1.5 mm2, transparent
• 4x Allen wood screws, black, 4x25 mm, 8 pieces
• Plan for DIY kit ClarityCap PWA capacitor 10 μF / 160 Vdc
• ClarityCap PWA capacitor 100uF / 160 Vdc
• Audaphon MKP CAP Superior 0.68 μF / 400 Vdc
• Audaphon MKP CAP Superior 5.6 μF / 400 Vdc
• Audaphon MKP CAP Superior 6.8 μF / 400 Vdc
• Audaphon MKT CAP 100 μF / 160 Vdc
• Mundorf, electrolytic capacitor, etched, 220 μF/63 Vdc
• 1.3 mm air core coil,2.2 mH/0.48 Ohm
• 0.7 mm air core coil, 0.47 mH/0.50 Ohm
• 0.7 mm air core coil, 0.68 mH/0.70 Ohm
• Mundorf bs140 core coil 8.2mH/0.33Ohm
• Mundorf H core coil H71, 3.9 mH/0.5 0hm
• Mundorf H core coil H71, 33 mH/1.93 0hm
• Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
• Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
• 5x Metal-oxide resistor, 10W 10 Ohm (brown-black-black)
• Metal-oxide resistor, 10W 15 Ohm (brown-green-black)

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