Active High-End Immersive
Audio Subwoofer
SMSG21
ACTIVEBuilt in Amplifier
The THE21 Sub PRO ACTIVE SEALED is a jewel in the pool of subwoofers designed for the highly educated customer that is on the quest for the highest performance and understands how to differentiate sound quality. When this customer experiences the THE21 SUB PRO AS’s unparalleled output and uncolored sound, the measured test results we publish translate perfectly to realized performance. ASCENDO’s policy is to be completely transparent and publish measurements done by independently certified third-party labs to provide factual data, thereby enabling informed, educated decisions. The THE21 SUB PRO AS is so far above and beyond the competition in every aspect; refined musicality, tightness, and output levels suitable for a 21"" driver. It is also engineered to operate perfectly in sync (in phase) with our Infrasonic subwoofers; THE24/32/50/80 SUB PRO SEALED when there is a desire to reproduce movie content below 20Hz with the same authority, precision, and musicality.
Compared to conventional subwoofer motor concepts, the ultra-modern double-gap motor of this custom-made 21" driver with two outer and two inner voice-coils enables more linear travel and much faster directional changes with higher sound power and significantly lower power compression.
Enormous power is achieved with the integrated powerful DSP and amplifier unit. The immensely powerful 3kW amplifier and even more powerful 6kW Power-supply handle any musical or movie attack with ease.
Specifications (selection)
Speaker type | 21-inch forward-firing, dual gap motor structure with 2 inner and 2 outer voice coiles, neodymium motor. |
Xmax | 18 mm excursion each direction (36 mm linear), voice coil remaining in homogeneous magnetic field, linear and lowest distortion |
Passive | Active | Active, built in DSP Amplifier |
SPL (peak / half space 2pi) | Measurement Data |
Frequency Range | Measurement Data (without DSP) |
Air volume displacement | 2,88 L / in comparison 21" standard cinema subwoofer 1,76 L |
Directivity horizontal x vertical in Deg° | 360° |
Output power | 3.000 W |
Power voltage range | 85 V - 265 V |
Input sensivity, balanced input impedance | 2.7V (with gain 32dB), 10k |
Damping factor (20-500 Hz @8Ω) | > 400 |
Converter | High Performance 96kHz/24 bits AD/DA converters, 64 bit double-precision 96kHz DSP process |
Input IIR EQ section | Gain, Mute, Phase inversion, Delay (up to 116ms, 40m), 10 EQ filters (Parametric, Shelving, LP, HP, BP, SB, AP) |
Analog Input Amplifier | 1 x XLR balanced |
Power connector | Neutrik powerCON True 1 in-out |
Automatic power off | Trigger |
Network Switch | 2ports Ethernet switch for daisy chain |
Controlling | OCS Software control |
Enclousure | Internally braced birch ply and MDF |
Width | 23,62 " | 600 mm |
Hight | 43,31 " | 1100 mm |
Hight with feet | 44,29 " | 1125 mm |
Depth | 14,57 " | 370 mm |
Depth with plug | 14,96 " | 380 mm |
Weight | 125,66 lbs | 57 kg |
Finish | Structural paint black |
Custom colour options | Piano lacquer, colour of choice, matt or other finishes upon request |
Shape customization | Upon request |
Mounting | Floor standing with feet |
The21 SUB PRO ACTIVE SEALED is supplied with a front cover as standard
Technical modifications subject to change without further notice
