The new ASCENDO The12 SUB ACTIVE VENTED subwoofer sets the standard for bass output, low distortion, and affordability. With chest thumping bass that plays deep down the The12 SUB AV subwoofer unleashes cinema level volume, with the ability to convey and articulate the subtle nuances of music.

12" Woofer: At the heart of the powered subwoofer is a composite cone driver with a very stiff sandwich cone paired with a large throw rubber surround. The The12 SUB AV driver was developed from the ground up, with a design focus on achieving output, accuracy, dynamics, and linearity, while minimizing distortion. Sophisticated computer modeling and measurement techniques are used extensively in the powered subwoofer design process. The woofer is enclosed in a cabinet made from HDF material outfitted with massive internal bracing and dual ports to minimize port turbulence.

600-Watt Amplifier: The 600W RMS amplifier is built around the high efficiency Class D amplifier module based on a proven topology with vast reserves of power for highly accurate, deep bass for your home theater or music system. A Variable crossover with adjustable phase control is used for easy integration with other speakers.

For convenience, an auto turn on/off function was added. Audio can be supplied to the The12 SUB AV by either balanced XLR or RCA interconnects (LFE/line level inputs).

Specifications (selection)

Speaker type

12" forward-firing compositive cone woofer, 3" voice coil


20 mm Xmax excursion each direction (40 mm linear), voice coil remaining in homogeneous magnetic field

Passive | Active

Active, built in DSP Amplifier (Class D)



Frequency range

Calculated Data
30 Hz - 150 Hz

Directivity horizontal x vertical in Deg°


Output power

600 W

Power voltage range

110 V or 220 V / switchable

Input sensivity

1 V / 20 KΩ

LFE input

1 x XLR balanced

Line level input

2 x RCA / unbalanced

LFE output

1 x XLR balanced

Line level output

2 x RCA / unbalanced


LP crossover 40 Hz to 150 Hz variable, phase 0° - 180°, volume control, auto turn on/off

Protection features

Therminal protection


Internally braced medium density fiber-board (MDF)


15,75 " | 400 mm


18,90 " | 480 mm

Hight with feet 

19,29 " | 490 mm

Depth without grill 

15,75 " | 400 mm

Depth with plug

18,11 " | 460 mm


48,5 lbs | 22 kg


Black acoustic fabric


Black ash

Custom colour options 

Piano lacquer, colour of choice, matt or other finishes upon request

Shape customization 

Upon request 


Floor standing with feet

Technical modifications subject to change without further notice


All speakers are supplied with a front grille as standard