WH3 Single 21″ Low Frequency Horn



The WH-3 is a full-size 13 foot long folded low frequency bass horn with a 32 Hz flare rate. At the heart of the horn is a 21 inch low frequency transducer with a 6” voice coil, 2000 Watts RMS, 4000 W Program and 8000 W peak power rating. It has the acoustic output of two of our WH1 18” folded horns. The expansion of the horn is constantly curved with no abrupt angles to color the sound. All the unused portions of the box are filled with hard polyurethane foam to increase efficiency and damp internal resonations. The result is clean, clear, well-defined, high-output low frequency reproduction.



System TypeLow Frequency Hyperbolic Bass Horn
Active or PassiveActively Crossed Over
Program Power ( Watts )4000W
Bi-ampable Designed to be actively band limited from 32-80 Hz
Nominal Impedance (Ohms)8 Ohms
Sensitivity (dB @ 1Watt/1m)112 dB, two enclosures paralleled
Max SPL (dB)148 calculated with 3 dB power compression
Frequency Response (Hz +/- 3dB)35 Hz – 170 Hz
Crossover Frequency (Hz)Band limited high and low pass 32-80 Hz
Driver ConfigurationSingle 21″ woofer
LF Driver(s)Single Neodymium 21″ woofer with 6″ Voice Coil
LF Program Power ( Watts )4000 W Program
LF Impedance (Ohms)8
InputsDual NL4 Speakon,
Inputs – Speakon Neutrik 4-pinNL4 Paralleled at pins 1
Flying Hardwareoptional
Enclosure Materials18mm to 36mm Birch Plywood
Finish / Covering Durablast Polyurea Coating
Optional Finish / Coveringother colors available
Dimensions (DWH xback W, inches)48.75 x 25.375 x 48 inches
Dimensions (DWH xback W, cm)124 x 65 x 122 cm
Weight (lbs/kg)325 lbs / 148 kg