Excel Orkla floorstanding speakers Kit with high-end crossover

Kit with high-end crossover without housing price per speaker

Orkla is a three-way floorstanding loudspeaker. Orkla is a bass reflex loudspeaker with chassis from SB Acoustics, Seas and Alcone. The loudspeaker contains the following chassis: - a beryllium tweeter SB Acoustics SATORI-TW29B - a midrange speaker Seas Excel W18EX001 - a woofer Alcone AC10 HE 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 0.2% above 500 Hz (that's excellent!) and remain below 0.5% in the audible range even at higher levels (95 dB, 1 m).

The high-end kit is equipped with baked enamel coils in the important places to reduce the microphonic effect (the current through the coil generates a magnetic field, which in turn sets the winding in motion. This movement induces voltages in the coil, which are added to the useful signal. The tighter the winding of the coil, the less the useful signal is distorted.) The capacitors for the SB Acoustics SATORI-TW29B - where quality is particularly important - are high-quality Clarity Cap CSA and ESA capacitors with 250 V.

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Technical data:

• Impedance: 4 Ohm
• Sound pressure level (2.83V/1m): 87 dB
• Dimensions (HxWxD): 1000 x 220 x 350 mm
• Frequency range (-8dB): 30 - 40000 Hz
• Crossover frequency(s): 120, 1750 Hz
• Principle: bass reflex box

Highlights

• Seas Excel W18EX001 (E0017-08S)
• SB Acoustics tweeter SATORI-TW29B, beryllium
• Alcone 25 cm loudspeaker AC10 HE, aluminum membrane
• Bass reflex tube HP70 XL, 70x220 mm, black
• Insulating fleece MT Bondum 800 (30 x 50 x 2 cm)
• 0.5x PE foam sealing strip, 5x2 mm, roll 7.5 m
• Insulating 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 black/red
• 1.5x Pan screws 4x20 black, Torx, 8 pieces
• Allen wood screws 5x30mm, black 8 pieces
• Construction plan for the kit the crossover components (right), to be assembled on a wooden board.
• ClarityCap PWA capacitor 68 μF / 160 Vdc
• ClarityCap PWA capacitor 82 μF / 160 Vdc
• ClarityCap PWA capacitor 2.2μF / 250 Vdc
• ClarityCap PWA capacitor 10 μF / 250 Vdc
• ClarityCap CSA capacitor 10 μF / 250 Vdc
• ClarityCap ESA capacitor 2.2μF / 250 Vdc
• 2x JB Elko bipolar, 220 μF/50 Vdc
• Mundorf baked varnish air coil BL71, 0.33 mH/0.48 Ohm
• Mundorf baked varnish air coil BL71, 0.47 mH/0.57 Ohm
• Mundorf baked varnish air coil BL100, 0.33 mH/0.26 Ohm
• Mundorf baked varnish air coil BL140, 1.8 mH/0.43 Ohm
• Mundorf BS125 core coil 12 mH/0.51 Ohm
• Mundorf H-core baked enamel coil BH71, 4.7 mH/0.55 0hm
• Mundorf H-core baked enamel coil BH71, 33 mH/1.93 0hm
• Ceramic resistor 1.5 Ohm/20 Watt
• Ceramic resistor 5.6 Ohm/20 Watt
• Metal oxide resistor MOX10 2.2 Ohm (red-red-gold)
• Metal oxide resistor MOX10 3.3 Ohm (orange-orange-gold)
• Metal oxide resistor MOX10 6.8 Ohm (blue-gray-gold)