Ascendo Ascendo 12" PRO Passive Sealed Subwoofer - Black Subwoofers
Ascendo Ascendo 12" PRO Passive Sealed Subwoofer - Black Subwoofers
Ascendo Ascendo 12" PRO Passive Sealed Subwoofer - Black Subwoofers

Ascendo 12" PRO Passive Sealed Subwoofer - Black


Regular price$4,900.00

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  • Free Delivery Australia Wide
  • Local Australian Warranty
  • 1800 100 998 For Assistance

We take pride in our customer service and shipping times. Most products will ship within 1-2 business days. If there are any potential delays with products in your order, we will contact you.

All orders now come with free shipping Australia Wide.

We use a variety of shipping methods depending on the types of items purchased and their delivery location. This helps to ensure your items arrive safely and in a timely manner. If you are on a tight deadline or would like to know an estimated delivery date for your order, contact our friendly staff and they will be happy to assist.

The12 SUB PRO PASSIVE SEALED SH with its sealed cabinet concept offers a rock-solid bass sound from the smallest of dimensions, easily integrable in restricted installation situations. With its shallow depth of 210 mm (8.27”) and exceptional 12” woofer, it can deliver the kind of tight, punchy bass and impressive dynamics that many would like from their modest home theaters or media rooms, all while tucked away in out-of-the-way locations.

The12 SUB PRO PASSIVE SEALED SH shares the same core design advantages the entire range of ASCENDO subwoofers feature - extremely low distortion to reproduce the finest details with the highest dynamic range to meet the content transients without compression, but perhaps more importantly, a linear response from bottom to top to allow for exceptional integration with the main and surround channels.


Speaker type

12" forward-firing, advanced carbon nomex pulp mix cones, neodymium motor with 4” ultra-high-temperature voice-coil and triple shorting rings.


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

Passive | Active


Recommended amplifiers 

1 Ch DSP + amplifier are required. Min. recommended amplifier: 70 Vrms, 99 Vpk, 17,5 A; equivalent to 1200W@ 4? with correct RMS & Peak limiting & compression settings.

Recommended ASCENDO amplifiers  

(With additional external 1CH DSP:  AIA2-1404 bridged, AIA2-2704, AIA4-2404 bridged, AIA4-6004, AIA8-6004 bridged) DSP4-6K2, DSP4-10K2




Calculated data
122 dB @ 100 Hz 

Frequency range

Calculated data
44 Hz - 400 Hz /   -3 dB
22 Hz - 400 Hz / -15 dB


88 dB  / 1W/m

Power handling 

1200 W


4 Ω  

Air volume displacement 

1,02 L / in comparison 12" standard cinema subwoofer 0,4 L

Directivity horizontal x vertical in Deg°


Input terminal

One 4-conductor Phoenix 12 AWG (3,3 mm²) push on binding post


Internally braced MDF


Matte black

Custom colour options 

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

Shape customisation 

Upon request 


Floor standing with feet

Technical modifications subject to change without further notice



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Customer Reviews

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CHT Solutions has been very prompt to respond and ship the items. I will never hesitate to buy from them again. More power to CHT Solutions!

Richard Y.
Thornleigh, NSW

CHT delivery was incredibly fast, Many thanks all for such an easy purchase process and super fast delivery. 5 stars from me

Chris N.
Malaga, WA

Buying from CHT Solutions was easy and their price was great and I would recommend then to anyone seeking good Hi Fi equipment.

John L.
Woonona, NSW

Fast delivery and great products. Would recommend them to anyone needing great service for sound advice.

Oscar F.
Truganina, VIC

CHT delivered the unit to South Australia within a couple of days. Amazing! Their phone customer service was professional and courteous. Will happily purchase from them again

Robert F.
Tranmere, SA