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Scan Speak BeTi 4x4 floorstanding loudspeakers Kit with high-end crossover
Kit with high-end crossover without housing price per speaker
The high-end kit is equipped with baked varnish 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.
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Scan Speak BeTi 4x4 floorstanding loudspeakers from K+T magazine 6/2018
Kit without housing price per speaker
BeTi 4x4 is a 2.5-way floor-standing loudspeaker. BeTi 4x4 is a bass reflex loudspeaker with a beryllium membrane tweeter from Scan Speak and a titanium membrane woofer from Visaton. The loudspeaker contains the following loudspeaker chassis: - a Scan Speak D3004/6040-10 tweeter - two Visaton TI 100 mid-woofers, 8 Ohm - two Visaton TI 100 woofers, 8 Ohm The loudspeaker was developed by Bernd Timmermanns. The crossover consists of: - a 3rd order high pass (18 dB / octave) for the tweeter. - 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 is practically error-free. The nonlinear distortions at medium volumes (90 dB, 1m) are below 0.35% above 300 Hz.
The high-end kit is equipped with baked varnish 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 tweeter - where quality is particularly important - are high-quality Mundorf M-Cap Evo silver/gold/oil capacitors.
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Technical data:
- Impedance: 4 Ohm
- Sound pressure level (2.83V/1m): 88.5 dB
- Dimensions (HxWxD): 965 x 230 x 300 mm
- Frequency range (-8dB): 48 - 28000 Hz
- Crossover frequency(s): 2000 Hz
- Principle: bass reflex box
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Highlights
- ScanSpeak Illuminator D3004/6040-10 dome, beryllium
- 4x Visaton TI 100, 8 Ohm
- 4x bass reflex tube HP50, 50x145 mm, black
- 0.5x PE foam sealing strip, 5x2 mm, roll 7.5 m
- Insulating material Sonofil 100 x 35 cm for 20 liters
- 0.5x Audaphon Damping 10, 970 x 470 mm, self-adhesive
- Pole terminals PK31, one pair, gold-plated, red+black
- 4m speaker cable 2x2.5 mm2, transparent
- 0.5x chipboard screw 5x50 countersunk head galvanized, 8 pieces
- 2.5x pan screws 3.5x17 black, Phillips, 8 pieces
- Construction plan for the kit the crossover components (right), on a Build wooden boards.
- Mundorf MCAP EVO Silver Gold Oil 10 μF / 450 V
- Mundorf MCAP EVO Silver Gold Oil 22 μF / 450 V
- Audaphon MKP CAP Superior 12 μF / 400 Vdc
- Audaphon MKP CAP Superior 15 μF / 400 Vdc
- Mundorf HeptaLitze coil II45, 0.22 mH/0.18 Ohm
- Mundorf baked varnish air coil BL180, 0.82 mH/0.17 Ohm
- Mundorf baked varnish air coil BL180, 1.8 mH/0.31 Ohm
- Mundorf BS180 core coil 4.7mH/0.15Ohm
- Metal oxide resistor MOX10 2.2 Ohm (red-red-gold)
- Metal oxide resistor MOX10 4.7 Ohm (yellow-violet-gold)
- Metal oxide resistor MOX5 0.47 Ohm 5% (yellow-violet-silver)
Scan Speak BeTi 4x4 0
2 Items
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Scan-Speak was founded in 1970 by Ejvind Skaaning and is today a world leader in the development and manufacture of high-end transducers. Scan Speak chassis have been used for years by the largest hifi and high-end loudspeaker manufacturers worldwide, obtaining unsurpassed results.
Scan-Speak Discovery
The Discovery family is one of the largest lines in Scan-Speak’s families, and a lot of its drivers are best sellers in Nonsolospeakers shop. This line of products is so popular because it offers a wide variety of choices of sizes. The design is based on traditional electroacoustic knowledge and craftsmanship. The cones are made of a glass fibre material coated to achieve proper damping, and that ensures smooth sound pressure frequency response. In this family, the well-known design, namely the 3” dome midrange Scan-Speak D7608/920000, still goes strong in terms of quality and performance despite its many years on the market. Other popular products in this family are the Scan-Speak Discovery R2604/832000, the Scan-Speak Discovery D2606/922000, and the Scan-Speak Discovery D2604/833000.
Scan-Speak Illuminator
The Illuminator line features advanced technology, and incredible performance. Characterized by an extreme care in the realization of the coils which are equipped with a linear excursion. Combined with the care in the use of materials for the cones and diaphragms guarantee transparency, detail and, the lack of distortion even at the highest levels is difficult to find elsewhere. The most popular example of this family is the Scan-Speak 18WU/8741T00 illuminator.
Scan-Speak Revelator
Products in the Revelator family feature a slit-paper uncoated non-resonant cone that reproduces music at a dynamic level, and clarity was unparalleled in the market. The tweeters are predominantly designed with a large roll surround, a powerful ring of Neodymium magnets, and optimized airflow systems. Within the wide Revelator range, you will find everything you need when it comes to high-end audio transducers, whether you need drivers for a small 2-way system or a giant multi-way loudspeaker. The Scan-Speak 15W/4531G, for example, provides a more extended frequency response than its brothers but still fantastic bass in a vented enclosure.
Scan-Speak Classic
The quality and success of Scan-Speak's designs are found in the Classic family with patented and proprietary technologies such as Symmetrical Drive, Low Loss Linear Suspension, Air-Dry Carbon Reinforced Paper Cones, and Paper Reinforced Nylon. The latest additions are Scan-Speak Classic D2904/980000 and Scan-Speak Classic D2008/851100.
Scan-Speak Ellipticor
One of the goals for a new driver concept at Scan-Speak was to minimize cone modes, and this family uses an innovative concept: an elliptical-shaped voice coils to control the cone and dome. By not driving the diaphragm asymmetrically, what you get is an “infinite” number of Eigen frequencies, but less contribution for each frequency and overall lower distortion. Driving the diaphragm symmetrically gets you a finite number of Eigen frequencies with a higher contribution combining at certain frequencies producing the “dreaded” colouration modes. From this concept, it was developed the Scan-Speak Ellipticor 18WE/4542T00.
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