DF-17 pwh Subwoofer box

The DF 17 PWH is concepted as a straight waveguide horn with a vented transducer cabinet. The recommended active x-over frequency is 160 Hz, 18 dB/oct. Butterworth. The 18″ EVX 180A OEM loudspeaker chassis is reliably protected against critical power levels and short thermal overload by thermo switches and 4-way halogen lamp protection. The DF 17 PWH cabinet is made of poplar plywood 18 mm. All corner joints and braces are grooved and glued. Braces are screwed additionally in order to reduce natural resonances to a minimum. The cabinet surface is finished in extremely resistant needled black-mottled felt. A powder-coated steel grid and an acoustic foam front protects the speaker front. The connector panel uses two 4-pole Speakon connectors (Input/Output) for safe connection and easy chaining to the next loudspeaker. The 2 handle trays on the sides guarantee easy and safe transport. 4 large-sized rubber feet and 4 castors allow easy handling and safe stand. A recessed speaker-stand threaded flange on the top allows various setups (clusters, sidefill, top).