Technical Data THE28 SUB SQ PRO PS SH
THE28 SUB SQUARED PRO PASSIVE SEALED SHALLOW specifications
The Radical Square Infrasonic Kick Woofer
General
Speaker Type
28” forward-firing, advanced carbon rohacell composite sandwich flat panel cone, neodymium motors with quad 4” ultra-high-temperature voice-coil
XMAX
22 mm excursion each direction (44 mm linear), voice coil remaining in homogeneous magnetic field
Principle
Sealed
Passive | Active
Passive
Recommended Amplifiers
1Ch Amplifier is required. Min. recommended amplifier: 141 Vrms, 200 Vpk, 17.7 A; equivalent to 2500 W @ 8 Ω, up to 450 V Peak. Other configuration can be 2 x 4 Ohms with 2 x 250 V Peak (2 x 178 V RMS)
Recommended ASCENDO Amplifiers
DSP-4D + AIA2-10K2 IS
Measured Data
SPL Peak (Peak / Half Space 2pi)
Measured Data 140 dB @ 80 Hz and up
Frequency Range
Measured data (without DSP) 55 Hz - 500 Hz / -3 dB 38 Hz - 640 Hz / -10 dB
Power Handling
30k W Peak
Efficiency
98 dB / 1 W/m 2 pi
Impedance
2 x 4 Ω (Other configurations possible)
Directivity Horizontal x Vertical in deg°
360°
Max Linear Air Volume Displacement
5.37 US. liq. gal. | 20.32 L
Input
Input Terminal
4-conductor Wago Lever-Nuts® 10 AWG (6.00 mm²)
Dimensions & Weight
Dimensions (W/H/D) mm (Without Grille)
800 | 1015 | 300 (Height without feet: 1000)
Dimensions (W/H/D) inch (Without Grille)
31 1/2 | 39 15/16 | 11 13/16 (Height without feet: 39 3/8)
Packing Dimensions (W/H/D) mm
960 | 1160 | 460
Packing Dimensions (W/H/D) inch
37 13/16 | 45 11/16 | 18 1/8
Weight
268.96 lbs | 122 kg
Gross Weight
291.01 lbs | 132 kg
Design & Mounting
Enclosure
Internally braced MDF
Finish
Satin matte black
Mounting
Floorstanding with feet
