Nexo Alpha System - Manual (Page 8)

α α α
P 8
USER MANUAL
VERSION :1.01
DATE : 06/10/10
1. Alpha Series description
1.1. L OUDSPEAKERS
The Alpha range includes the following speakers :
• The S2 Sub-bass is a double 18-inch resonator loaded sub-bass, dedicated to very low frequency
reproduction ( < 80 Hz ) ;
• The B1-15 & B1-18 are complex loaded (bass-reflex & exponential horn) bass cabinets ; the B1-15
houses one 15-inch driver, while the B1-18 houses one 18-inch driver ; frequency response ranges from
40 Hz up to 200 Hz ;
• The Mid-high M3 & M8 are concentric horn cabinets dedicated to the 200 Hz - 20 kHz frequency range
reproduction ; the MF range is handled by two exponential horn loaded 10-inch drivers whose response
is optimised by two Nexo designed phase plugs ; the HF range is handled by one constant directivity
horn loaded two-inch Neodynium driver.; M3 coverage is 35° (H) x 35°(V), M8 75° (H) x45° (V) ;
• The Mid-high EM forms part of the recently introduced Alpha E Series; its size and power-rating is
smaller than that of the Alpha M3 & M8 ; the mid range is handled by an exponential horn loaded 10’’
driver, while the HF range is handled by a constant directivity horn loaded ceramic 2’’ driver. Alpha EM
coverage is 75°x30°.
• The compact EF is dedicated to the full audio range reproduction 40 Hz – 20 kHz ; it resembles one EM
and one B1-18 stacked in a monoblock compact format.
Alpha cabinet formats are designed for optimal array assembly (see section VII “Dimensions”) ; all the
cabinets have the same width and depth, height is in multiples of 200 mm.
• Double height (1200 mm ) : Alpha S2, Alpha EF ;
• 4/3 height (800 mm ) : Alpha B1-18 ;
• Single height (600 mm) : Alpha B1-15, Alpha M3, Alpha M8 ;
• 2/3 height (400 mm) : Alpha EM
1.2. N EXO TD CONTROLLERS
The Alpha Series speakers are associated with the following Nexo TDcontrollers :
• SubTDcontroller : Alpha S2 ;
• AlphaTDcontroller : Alpha B1-15, B1-18, M3 & M8 ;
• AlphaETDcontroller : Alpha B1-18, EM & EF ;
• NX241 Digital TDcontroller : all current Nexo speakers.
1.3. T HE X-BOW FLYING SYSTEM
The design of the X-BOW flying system has been optimised for the dispersion specifications of
the Alpha range, its mechanical characteristics match accurately the acoustical properties of the
speakers.
The concept of this flying system enables efficient array assembly, with minimum space between
cabinet, thus reducing edge diffraction.