SKU: 94128267068

Ascendo The28 Sub Pro Passive Squared Infrasonic Subwoofer

Sale price$20700.00 Regular price$23000.00
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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14

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Description

Ascendo The28 Sub Pro Passive Squared Infrasonic SubwooferTHE 28 SUB PRO SQUARED: The Future of Bass Has Arrived Revolutionising Home Theatre Bass The 28 Sub Pro Squared is not just a subwooferits a breakthrough in low frequency performance. Inspired by a discussion with Trinnov CEO Arnaud Laborie at the ISE Show, this subwoofer was engineered to push the boundaries of bass reproduction. After extensive research and development, it features an ultra powerful 28 inch composite sandwich cone, constructed from

THE 28 SUB PRO SQUARED: The Future of Bass Has Arrived

Revolutionising Home Theatre Bass

The 28 Sub Pro Squared is not just a subwoofer—it’s a breakthrough in low-frequency performance. Inspired by a discussion with Trinnov CEO Arnaud Laborie at the ISE Show, this subwoofer was engineered to push the boundaries of bass reproduction. After extensive research and development, it features an ultra-powerful 28-inch composite sandwich cone, constructed from multiple layers of Rohacell. With a cone surface equivalent to a 32-inch round subwoofer, it sets a new benchmark for deep, powerful, and precise bass.

Unrivalled Performance in Any Space

Designed to deliver exceptional output with a minimal footprint, the 28 Sub Pro Squared is the ideal solution for high-performance home theatre setups. Whether used in a subwoofer cluster, Trinnov WaveForming, Dirac ART, double bass arrays, or single bass arrays, it integrates seamlessly while producing earth-shaking, infrasonic frequencies—bass that is felt as much as it is heard.

It also extends beyond the standard 120Hz LFE cutoff, making it the ultimate kick woofer for high-impact effects. Whether it’s the deep resonance of an explosion or the sharp crack of a gunshot, every sound is reproduced with incredible clarity, precision, and intensity.

Precision-Engineered for Maximum Impact

With a depth of just 30 cm, the 28 Sub Pro Squared fits into spaces where other subwoofers cannot, yet it delivers unrivalled performance. Its compact yet commanding dimensions—80 cm wide and 100 cm high—allow for close woofer spacing, ensuring perfect coupling in bass arrays with control up to 120Hz.

Cutting-Edge Engineering for an Immersive Experience

This subwoofer is engineered to deliver not just deep bass, but accurate and controlled bass. With an ultra-powerful motor structure, it generates a perfect planar wave front, offering high efficiency, extreme power handling, and low system Q. The result is bass that is tight, fast, and dynamic, ensuring every note and effect is delivered with stunning accuracy.

Experience Sound Like Never Before

The 28 Sub Pro Squared by Ascendo is more than just a subwoofer—it’s a gateway to an immersive audio experience. Whether for blockbuster movies, high-impact gaming, or music, it delivers bass that can be felt in the chest and throughout the room.

✅ Groundbreaking low-frequency performance
✅ Compact yet powerful design
✅ Seamless integration into advanced home theatre systems
✅ Precision engineering for tight, controlled bass

Stop just watching films—start experiencing them.

Specification

Speaker type

28" forward-firing, advanced carbon rohacell composite sandwich flat panel cone, neodymium motors with quad 4” ultra-high-temperature voice-coil

Xmax

22mm Xmax excursion each direction (44 mm linear), voice coil remaining in homogeneous magnetic field

Passive | Active

Passive

Recommended amplifiers 

1Ch Amplifier is required. Min. recommended amplifier: 141 Vrms, 200 Vpk, 17.7 A; equivalent to 2500W@8 Ohm, up to 450V Peak. Other configuration can be 2 x 4 Ohms with 2 x 250V Peak (2 x 178V RMS)

Recommended ASCENDO amplifiers  

(With DSP-4D: AIA2-10K2 IS), DSP4-10K2

Principle

Sealed

SPL (Peak / half space 2pi)

Measurement data
140 dB @80 Hz and up
123 dB @ 20Hz
100 dB @ 11Hz
Please refer to our measurement report for more details

Frequency range

Measurement data (without DSP)
38 Hz - 640 Hz / -10 dB

 Efficiency 

91.8 dB / 1W/m 4 pi, 97.8 dB / 1W/m 2

Power handling 

30kW Peak

Impedance 

4 Ω  

Air volume displacement 

11.7 L / 713 cu in comparison 18" standard cinema subwoofer 1,1 L

Directivity horizontal x vertical in Deg°

360°

Input terminal

4-conductor Phoenix 10 AWG (5,26 mm²)

Enclosure

Internally braced MDF

Width 

37,80 " | 800 mm

Height

39,37 " | 1000 mm

Height with feet 

39,96 " | 1015 mm

Depth without grill 

11,81 " | 300 mm

Weight

308,65 lbs | 140 kg

Finish 

Satin matte black

 

Technical modifications subject to change without further notice

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 94128267068

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4.4 ★★★★★
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Verified Purchase
L. P.
Houston, US
★★★★★ 5
I'm replacing all of the bed pillows in the house.
Size: Cooling Queen
Best pillows ever. No stiff neck in morning, I have ordered more. Perfect loft, no chopped up foam. Cool on one side.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
T
Verified Purchase
tim kelly
Battle Creek, US
★★★★★ 5
Amazing buy will be getting more
Size: Cooling Queen
The pillows are of amazing quality the support is great there not to big in thickness and great value for two of them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
Z
Verified Purchase
Zuleima Magana
Bozeman, US
★★★★★ 5
Comfort
Size: Cooling Queen, Size: Cooling Queen
Súper cómodas ricas y si permanecen frías lo más cómodo de almohadas que he tenido
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Reviewed in the United States on May 6, 2026
P
Verified Purchase
Patricia Banuelos
Los Angeles, US
★★★★★ 5
Two pillows—one firm, one cotton
Size: Cooling Queen, Size: Cooling Queen
Blue Ridge Home Fashions: Purchase this set of two Queen-sized cooling pillows. Featuring a reversible design with a cooling side and a cotton side, these medium-firm pillows offer a breathable, down-alternative fill. They are neither too hard nor too soft, helping to support your sleeping posture. Cool to the touch, soft, and breathable, these pillows are crafted from high-quality fabric to ensure a more comfortable and restful sleep.
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Reviewed in the United States on May 4, 2026
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Verified Purchase
Mort
Port Orchard, US
★★★★★ 5
Worth it, I have 2
Style: All Season, Size: King
Soft, good material, I like the thickness. Does not feel cheap.You do have to put it in a dryer on really low to fluff it up. Check it after 20 minutes. Pull it out fluff it up and put it back in the dryer. Do not use hot heat. I also put it in a linen duvet.
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Reviewed in the United States on May 1, 2026

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