Tang Band BPA Flat 5 floorstanding loudspeaker in K+T 5/2013

Kit without housing price per speaker

Blue Planet Acoustic Flat 5 is a kit designed by Blue Planet Acoustic with a Tang Band full-range speaker. The special thing about the speaker box is its shallow depth of just 12 cm (without its protruding feet). The Tang Band W5-1611 full-range speaker sits slightly off-center in the baffle so that unevenness in the frequency response caused by diffraction effects is minimized. The full-range speaker has such a good-natured frequency response in the transmission line housing that a crossover to linearize the frequency response is not necessary. The frequency response is quite linear for a full-range speaker; the non-linear distortions are not high; the waterfall spectrum is good-natured.

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Technical data:

• Impedance: 8 Ohm 
• Sound pressure level (2.83V/1m): 87 dB
• Dimensions (HxWxD): 959 x 398 x 120 mm 
• Frequency range (-8dB): 50 - 18000 Hz 
• Crossover frequency(s): Hz
• Principle: Transmission line box

Highlights

• Tang Band W5-1611 SAF (replacement for W5-1611)
• Insulating material Sonofil 100 x 35 cm for 20 liters
• 0.5x insulating fleece MT Bondum 800 (30 x 50 x 2 cm)
• Audaphon Bitumex adhesive plate 32.5 x 24.5 cm, 5.5 mm thick
• Pole terminals PK31, one pair, gold-plated, red+black
• 1.5m speaker cable 2x1.5 mm2, transparent
• Pan screws 4x20 black, 4 pieces
• Construction plan for the kit