Visaton Aluminata 130/4 KE floorstanding loudspeaker from Hobby Hifi 3/2016

Kit without housing price per speaker

Aluminata 130/4KE is a 2 1/2-way floor-standing loudspeaker with four mid-woofers arranged in a row. Two of these are used as mid-woofers; the other two complement the first two in the lower frequency range. The upper two mid-woofers have the Visaton dome in their center. Bass reflex was chosen as the housing's functional principle. The loudspeaker was developed by Bernd Timmermanns. In Aluminata 130/4KE, one Visaton KE25 SC ceramic dome is used per loudspeaker box and four Visaton AL 130s are used as woofers or mid-woofers. The crossover consists of a 4th order high pass (24 dB/octave) for the tweeter dome. A 3rd order low pass drives the mid-woofers, to which two further woofers are coupled via a 2nd order low pass at lower frequencies. One suction circuit smooths the frequency response of the Visaton AL 130. The frequency response of the loudspeaker is very balanced between 40 Hz and 15,000 Hz, with a slight loudness characteristic (middle reduction) and thus supporting spatial width. The decay spectrum is practically error-free below 20 kHz. The non-linear distortions at medium volumes (90 dB, 1m) are below 1% above 100 Hz.

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Technical data:

• Impedance: 6 Ohm
• Sound pressure level (2.83V/1m): 89 dB
• Dimensions (HxWxD): 1235 x 240 x 400 mm
• Frequency range (-8dB): 33 - 24000 Hz
• Crossover frequency(s): 2000 Hz
• Principle: bass reflex box

Highlights

• Visaton KE 25 SC, 8 Ohm
• 4x Visaton woofer AL 130, 8 Ohm
• 2x bass reflex tube BR 25.50, black
• Insulating fleece MT Bondum 800 (30 x 50 x 2 cm)
• 2x insulating material Sonofil for 20 liters, white (polyester wadding)
• 0.5x PE foam sealing strip, 5x2 mm, roll 7.5 m
• 2x Audaphon Damping 10, 970 x 470 mm, self-adhesive
• Pole terminals PK31, one pair, gold-plated, red+black
• 5m speaker cable 2x2.5 mm2, transparent
• 3x pan screws 3.5x17 black, Phillips, 8 pieces
• Construction plan for the kit the crossover components (right), to be assembled on a wooden board.
• Audaphon MKP CAP Superior 6.8 μF / 400 Vdc
• Audaphon MKP CAP Superior 10 μF / 400 Vdc
• Audaphon MKP CAP Superior 12 μF / 400 Vdc
• 2x Elko rough, 150 μF/63 Vdc
• Elko smooth, 15uF / 70 Vdc
• Mundorf air coil L140, 0.82 mH/0.26 Ohm
• Mundorf air coil L140, 1.2 mH/0.33 Ohm
• Mundorf air coil L140, 4.7 mH/0.80 Ohm
• 0.7 mm air coil, 0.27 mH/0.45 Ohm
• 0.7 mm air coil, 1.0 mH/1.02 Ohm
• 2x 0.7 mm air coil, 27 mH/6.44 Ohm
• Metal oxide resistor MOX10 3.3 Ohm (orange-orange-gold)
• 2x metal oxide resistor MOX10 4.7 Ohm (yellow-violet-gold)
• 2x metal oxide resistor MOX10 5.6 Ohm (green-blue-gold)