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Excel Rauma floorstanding loudspeakers from K+T magazine 2/2018
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Excel Rauma floorstanding loudspeakers from K+T magazine 2/2018
Kit without housing price per speaker
Rauma is a high-quality two-way floor-standing loudspeaker. Rauma is a bass reflex loudspeaker with chassis from SEAS and Audaphon. It contains the following loudspeakers: - an air motion transformer (ribbon tweeter) Audaphon AMT 1i - two woofers SEAS Excel W15CH001 As the loudspeaker chassis are of the highest quality, the crossover could be kept quite simple (without blocking or suction circuits)
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Excel Rauma floorstanding loudspeakers from K+T magazine 2/2018
Kit without housing price per speaker
Rauma is a high-quality two-way floor-standing loudspeaker. Rauma is a bass reflex loudspeaker with chassis from SEAS and Audaphon. It contains the following loudspeakers: - an air motion transformer (ribbon tweeter) Audaphon AMT 1i - two woofers SEAS Excel W15CH001 As the loudspeaker chassis are of the highest quality, the crossover could be kept quite simple (without blocking or suction circuits). The crossover consists of: - a 2nd order high pass (12 dB / octave) for the tweeter. - a 2nd order low pass (12 dB / octave) for the woofer. The frequency response of the loudspeaker is perfectly linear. The decay spectrum is practically flawless with the exception of a resonance around 600 Hz. The nonlinear distortions at low volumes (85 dB, 1 m) are below 0.2% above 500 Hz and remain below 0.4% in the audible range even at higher levels (95 dB, 1 m).
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Technical data:
- Impedance: 4 Ohm
- Sound pressure level (2.83V/1m): 87 dB
- Dimensions (HxWxD): 1300 x 180 x 250 mm
- Frequency range (-8dB): 30 - 25000 Hz
- Crossover frequency(s): 2100 Hz
- Principle: bass reflex box
Highlights
- Audaphon AMT-1i
- 2x Seas Excel W15CH001 (E0037-08S)
- Bass reflex tube HP70 XL, 70x220 mm, black
- 2x insulation fleece MT Bondum 800 (30 x 50 x 2 cm)
- 0.5x PE foam sealing strip, 5x2 mm, roll 7.5 m
- 1.5x insulation material Sonofil 100 x 35 cm for 20 liters
- Pole terminals PK31, one pair, gold-plated, red+black
- 3m speaker cable 2x1.5 mm2 black/red
- 1.5x pan screws 4x20 black, 8 pieces
- Construction plan for the kit the crossover components (right), to be assembled on a wooden board.
- ClarityCap SA capacitor 1.8uF / 630 Vdc
- ClarityCap SA capacitor 8.0uF / 630 Vdc
- Audaphon MKT capacitor 22 μF / 160 Vdc
- 1.3 mm air coil, 0.82 mH/0.275 Ohm
- 0.7 mm air coil, 0.33 mH/0.48 Ohm
- Metal oxide resistor MOX10 3.3 Ohm (orange-orange-gold)
- Metal oxide resistor MOX10 5.6 Ohm (green-blue-gold)
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