Kingdom Royal

Cabinet Dimensions (H x W x D)

1275 x 585 x 600 mm (50.2 x 23.0 x 23.6”)

Enclosure Volume 

160 litre (5.65 cu.ft.)

Enclosure Type

Reflex for bass driver, closed box for Dual Concentric™

Enclosure Weight

120kg (265lbs)

Recommended Amplifier Power

20 to 600 watt RMS per channel

Power Rating

300 watt RMS
1200 watt peak

Maximum SPL

120dB at 1 metre for 300 watt RMS
126dB at 1 metre for 1200 watt peak

Total Harmonic Distortion

Less than 1% at 300 watt RMS (50Hz to 20kHz)

Sensitivity

96dB for 2.83 volt at 1 metre

Nominal Impedance

8 Ohms

Dispersion

90 degree conical

Frequency Response

24Hz - 61kHz (-6dB)

Crossover Frequencies

120Hz bass to Dual Concentric™ midrange
700Hz Dual Concentric™ midrange to compression tweeter
17 kHz Dual Concentric™ tweeter to SuperTweeterTM

Crossover Adjustments

Dual Concentric™ energy +/- 3.0dB in 5 steps, 700Hz- 17kHz
SuperTweeter™ energy +/- 3.0dB in 5 steps, 17kHz- 61kHz

Crossover Type

Bi-Wired, Hard-Wired passive, low loss. All connections silver soldered. 99.9999% purity PCOCCTM wiring, except for SuperTweeter™ 99.997% purity single strand custom silver cable. Complete assembly deep cryogenically treated. Free floating isolation system. All crossover slopes 2nd order, except for SuperTweeter™ 1st order high pass

Low Frewquency Driver 

380mm (15 inch) nominal diameter with treated paper cone.
75mm (3 inch) diameter voice coil

Dual Concentric

300mm (12 inch) nominal diameter Dual Concentric™, with 52mm (2 inch)
midrange voice coil and treated paper cone. High frequency 75mm (3 inch)
diameter aluminium alloy dome, deep cryogenically treated

SupertweeterTM

25mm (1 inch) diameter 64 micron magnesium alloy dome, ceramic coated.
Neodymium magnet system. Plasma bonded voice coil.

Cabinet Construction

Birch ply and high density fibreboard. Extensive internal bracing