RW4 is the top model in the range, available with either inboard (IBX) or outboard (OBX) crossovers.
The IBX-RW4 inboard crossover variant has the advantage of a closer coupling of the crossover filters to the drivers. This gives a marginally tighter presentation and a slightly more determined, urgent feel. There is shape and texture across the full frequency range and the bass performance is deep and rich with scale, authority and ease. With a near perfect balance of size, bandwidth, efficiency and tonal refinement this is the choice of the serious music lover when domestic considerations rule out having external crossovers.
Each Auditorium is ideally suited to exploiting the inherent advantages of class A valve amplification, and has been designed and voiced with the output impedance (and damping factor) of zero/low negative feedback direct-heated Triode designs in mind. In smaller rooms, the 8 watts offered by a single-ended 300B design can be fully realised, however we recommend the use of amplifiers with 15 watts or more to exploit the full dynamic potential available on a broad range of music programmes. The dispersion characteristics of the Auditorium Series are such that they create a coherent soundstage even for listeners sitting significantly off-axis. This is emphatically not a ‘hot spot’ design.