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Blacka Acoustics BS 15 Subwoofer.Powerful and immense. As a good Sub its heavy and it should be.Its well built, don’t hesitate in buying 4 wheels for transport, your back will be very thankful, this sub will expand your bass-based-music delivery. Totally recommended. Cost over 1000 when purchased brand new in Jan 2019 directly from Blacka Acoustics, used until Xmas 2019 and served us well during that short time. No cables just the sub.Has a few paint scratches here and there as shown in pics.Collection in person only from Gatley SK8Product details:BS15 sub is part of our premiere touring range, ideally suited for concerts and outdoor events. The innovative folded horn enclosure incorporates a 1000W RMS 15” driver specifically designed to withstand the large excursions typical of high level sub bass reproduction. Large deflector ports ensure resonance is kept to a minimum and forms the bass foundation for a very powerful Blacka Acoustics portable PA system, specially suited to live music reproduction and outdoor festivals.
SPECIFICATIONS:Model: BS 15Type:Folded Horn Sub Bass CabinetFrequency Response:From 35Hz – 160HzRated Power:1000w RMS – 2000w PeakSensitivity:97dbMaximum SPL:136dbNominal Impedance:8 OhmsBass :15” DriverEnclosure:Multi Laminated Birch PlyFinish:Textured Black PaintGrille:Black perforated SteelConnector 2 x Neutrik NL4 (Not included)Fittings 2 x Castors 2 x Recessed Metal Bar HandlesDimensions (W) 50.8 cm x (H) 114.5 cm x (D) 76.2 cm
AMPLIFICATION:The Blacka Acoustic BS Series Systems are designed to be used with professional power amplifiers capable of producing a minimum specification of 1100w – 2200w power output into 4 ohms.Care should be taken to avoid amplifier clipping, it is important to understand that a low power amplifier driven into clipping is more likely to damage a loud speaker than a higher power amplifier used within its ratings. Primarily because music signals have a high peak to average crest factor. When an amplifier is severely overdriven its output waveform is clipped resulting in squared off peaks and thus reducing the crest factor. In extreme cases, the waveform can approach that of a square wave. An amplifier is normally capable of producing far more power under these conditions than its undistorted rated power output. The use of very high power amplifiers with outputs greater than those recommended is discouraged.Care should be taken to avoid switch on surges, which can result in momentary power peaks in excess of specified ratings. When powering up a sound system it is important to switch on the amplifiers after the mixer and control electronics have stabilised. When powering down the system, reverse the sequence and switch off the amplifiers first.SAFETY:It is important that loudspeaker systems are used in a safe manner. Please take some time to review the following points concerning use of Blacka Acoustics Loudspeakers.Professional loudspeakers are capable of producing extremely high sound levels and should be used with care. Hearing loss is cumulative and can result from levels above 90 DB if people are exposed for a long period , never stand close to loudspeakers driven at high level.STACKING:1 The BS15 is a relatively heavy unit and should always be lifted by two people.2 Ensure that the floor or stage is level and solid.3 Do not stack speakers too high when outdoors as high winds can topple stacks.4 Be aware that these speakers produce very high levels of output. They can move or creep, to avoid any problems it is advisable to strap the speakers down when stacking.
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