Audaphon Athena floorstanding speakers from K+T 4/2022

Kit without housing, price per speaker

Athena is a three-way floorstanding loudspeaker with very low distortion. Athena is a bass reflex loudspeaker with chassis from Audaphon and Wavecor. The loudspeaker contains the following chassis: - an air motion transformer (ribbon tweeter) Audaphon AMT 1i - a midrange speaker Wavecor WF182CU13 - a woofer Wavecor WF223BD01 The loudspeaker was developed by David Hahn. The crossover consists of: - a 2nd order high pass (12 dB / octave) for the tweeter. - a band pass consisting of a 2nd order high pass (12 dB / octave) and a 3rd order low pass (18 dB / octave) for the mid-woofer. - a 2nd order low pass (12 dB / octave) for the woofer. The frequency response of the loudspeaker is perfectly linear. The decay spectrum (waterfall diagram) is exemplary without any disturbing resonance. The non-linear distortions at low volumes (85 dB, 1 m) are below 0.6% above 300 Hz and remain below 0.6% in the audible range even at higher levels (95 dB, 1 m). At 85 dB, the non-linear distortions above 700 Hz remain almost consistently below 0.1%

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Technical data:

• Impedance: 3 Ohm
• Sound pressure level (2.83V/1m): 90 dB
• Dimensions (HxWxD): 1150 x 250 x 300 mm
• Frequency range (-8dB): 32 - 30000 Hz
• Crossover frequency(s): 230, 2000 Hz
• Principle: bass reflex box

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• Wavecor WF182CU13, 8 Ohm, paper, BD, phase plug
• Audaphon AMT-1i
• Wavecor WF223BD01, 4 Ohm, mid-woofer paper / fiberglass
• Bass reflex tube HP100, 100x197 mm, black
• 2x insulation fleece MT Bondum 800 (30 x 50 x 2 cm)
• Insulation material Sonofil 100 x 35 cm for 20 liters
• Pole terminals PK28 I, one pair, gold-plated, red + black
• 3m speaker cable 2x1.5 mm2, transparent
• Pan screws 3.5x17 black, Torx, 8 pieces
• Pan screws 4x20 black, Torx, 8 pieces
• Construction plan for the kit the crossover components (right), to be assembled on a wooden board.
• Audaphon MKP CAP Superior 1.5 μF / 400 Vdc
• Audaphon MKP CAP Superior 8.2 μF / 400 Vdc
• Audaphon MKP CAP Superior 12 μF / 400 Vdc
• Audaphon MKT capacitor 100 μF / 160 Vdc
• JB Elko bipolar, 100 μF/100 Vdc
• 1.3 mm air coil, 0.68 mH/0.22 Ohm
• 1.3 mm air coil, 1.5 mH/0.40 Ohm
• 0.7 mm air coil, 0.39 mH/0.49 Ohm
• 0.7 mm air coil, 6.8 mH/2.68 Ohm
• Audaphon M-core coil M14, 4.7 mH/0.24 0hm, wire length 30mm,
• Stripping 20mm
• Metal oxide resistor MOX10 3.9 Ohm (orange-white-gold)
• Metal oxide resistor MOX10 6.8 Ohm (blue-grey-gold)