TriangleTube MAGELLAN CELLO, Owner'S Manual & Warranty

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FILTERING SYSTEM

FILTERING SYSTEM

RPC - REGULATED PHASE CROSSOVER

The vision behind the development of the new MAGELLAN line was to create very powerful direct drive 
electro-dynamic drivers for all of the models in the line, regardless of their specific frequency range. Above all, 
the filter was designed primarily to give the final product the best possible musical characteristics. What makes 
the filtering circuits in the MAGELLAN line unique is modeling the filter’s crossover characteristics to those of 
the drivers in order to achieve a very steep cutoff and an excellent phasing.

Furthermore, this technique avoids using additional electric components and thereby compromising the 
signal quality.

The filtering on the new MAGELLAN line between the tweeter and the midrange is 24dB/octave, and 12dB/
octave between the midrange and the woofer.

The filters used on the new MAGELLAN line make the loudspeakers less susceptible to gaps in the sonic 
spectrum. The loudspeakers’ natural frequency responses were modified digitally for a perfect match with its 
filter’s transfer function.

Furthermore, the drivers’ impedances were linearized for more efficient performance between the amplifier 
and speaker. This modified impedance acts almost as a pure resistance, allowing the amplifier to work very 
efficiently.

The TRIANGLE RPCTM system provides a reduction in both phase distortion as well as speaker directivity. As 
a result, the position of the listener will have little effect on the listening experience.

The MAGELLAN filtering system is made of high quality electrical components (low inductance ceramic 
resistors, polypropylene capacitors, large gage windings). The components are carefully selected in order to 
meet the stringent manufacturing requirements of our end products.

TM

GENERAL DESCRIPTION