Dynacord Speaker manual Planar Waveguide Sub

FX 20

FX 20

PLANAR WAVEGUIDE SUB

To generate the maximum possible sound pressure, the FX 20 subwoofer features a Planar Waveguide bass horn and a high- power EVX 180B 18“ woofer.

It covers a bandwidth from 30 Hz to 150 Hz with a maximum sound pressure level of 132 dB / 1 m.

Two of these Planar Waveguide subwoofers deliver up to 138 dB / 1 m per side, creating an extremely dry and deep bass foundation for Xa 2 systems. Like the top, the 18“ woofer is securely protected

against thermal overload by the Voice Coil Tracking Protection system, and even extremely high power peaks are transduced accurately and powerfully without compromising the dynamic range. The cabinet is made from multiply poplar plywood 15 mm thick cove- red by extremely hard-wearing needle-felt carpeting. Two FX 20 subwoofers stacked one on top of the other reach a height of 180 cm, creating the ideal plinth for an‚ overhead‘ stack of FX 12 tops. Again, the use of four-pole Speakon

cables obviates the risk of wiring errors when connecting up the system. The Sub signal supplied by the system power amplifier is on Pin 1+ / 1-, and the midrange / high frequency signal on pin 2+ / 2- is looped through to the tops.

Four large rubber feet on the side and the same number on the bottom provide for safe stacking in a variety of configurations. No fewer than six handles and four heavy-duty castors on the rear facilitate safe transportation.

SYSTEM AMP

XA 4000

The Xa 4000 system amp is a two-way (Sub-Top) power amplifier that can either be positioned laterally – for shorter cable runs to the cabinets – or centrally in the rack. Only two rack units in height and weighing a mere

8.25 kg, this Class H power amplifier is equipped with a switch-mode power supply of the latest generation. It out- puts 1,100 W in the Sub and 900 W in the Top channel – in each case into 4 Ω. Up to three tops and three sub-

woofers, however, can be driven reliably and economically by a single amp. All the requisite signal processing including the equalization, LPN filter, low-cut filter and active crossover, with its crossover frequency of 140 Hz with 18 dB / octave in a modified Butterworth structure, is on board. From the front panel, the level of the Sub and Top channels can be set individually to allow optimization of the system to the geometry and acoustics of the room.

77