Structure

The construction technique responsible for the striking appearance of Blumoon also has numerous advantages over conventional methods of loudspeaker cabinet manufacture.

A study of the cross-section of MDF (also known as supawood) used in the manufacture of most loudspeakers reveals a high density at the surface, reducing towards the center of the board. When several of these panels are laminated together as in case of the Blumoon, the alternating layers of high and medium density create a structure that is both well damped and ultra rigid - the ideal properties for a loudspeaker cabinet. The only disadvantages are the additional cost of the material and the hand assembly of the finished product, which is why this method is only used for a handful of premium products.

The other advantage of this method is that the internal cavity is created by bonding together MDF panels that have been routed out using laser cut templates. The internal space can therefore be irregular, eliminating the parallel walls present in conventional loudspeakers, and suppressing the formation of standing waves. Internal bracing is also easily incorporated into the same structure at the optimal support points.

Crossover and Drivers

The electrical design of the crossover is conventional, using a first order low pass slope on the woofer and a second order high pass slope on the tweeter. The crossover point is 3000 Hz. The crossover is hard wired with air cored inductors and metallised polypropylene capacitors.

Low order filter slopes are generally preferred as they are subjectively superior in reproducing the energy and sense of space in the music.

The drive units are sourced from Morell, renowned for high quality products at various price points. The drive units chosen for this design are from their standard range, but combine with the advanced cabinet and simple crossover to achieve a performance that exceeds all expectations.