SKU: 97589969470

Ascendo 18" PRO Passive Sealed Shallow Subwoofer - Black

Sale price$4612.50 Regular price$5125.00
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Description

Ascendo 18" PRO Passive Sealed Shallow Subwoofer - BlackThe18 SUB PRO PASSIVE SEALED SH subwoofer is so far above and beyond the competition in every aspect; refined musicality, tightness, and output levels suitable for a 18" driver. Combine this exceptional performance with an enclosure only 10,43 deep to accommodate a wider range of applications where larger enclosures just cant fit, and this model could possibly take the home theater market by storm. The 18 driver is an advanced carbon rohacell

The18 SUB PRO PASSIVE SEALED SH subwoofer is so far above and beyond the competition in every aspect; refined musicality, tightness, and output levels suitable for a 18" driver. Combine this exceptional performance with an enclosure only 10,43” deep to accommodate a wider range of applications where larger enclosures just can’t fit, and this model could possibly take the home theater market by storm.

The 18” driver is an advanced carbon rohacell composite sandwich cone. It is coupled with a neodymium motor with 4” Ultra-high-temperature voice coil. With a max SPL of 137dB @100Hz an , the dynamic expression and percussive impact that this sub can deliver puts it in a class by itself, let alone in such a shallow footprint as to almost disappear in home theaters or media rooms when compared to more traditional cube subwoofer designs.

In larger rooms where more output is needed (or just desired), ASCENDO also offers a Dual-18” version of this same enclosure design, with the two woofers stacked - The18-2 SUB PRO PASSIVE SEALED SH. The 143dB SPL @100Hz capability of this 48” high, 24” wide and only 11” deep defies belief until experienced.

Both models are engineered to operate perfectly in sync (in phase) with our Infrasonic subwoofers; The24, The32, The50 and The80 when there is a desire to reproduce movie content below 20Hz with the same authority, precision, and musicality. The combined results sound (and feel) like seamless and natural extensions of their individual efforts, adding to the overall addictive, immersive quality of a complete ASCENDO system.

Specifications

Speaker type

18" forward-firing, advanced carbon rohacell composite sandwich cones, neodymium motor with 4” ultra-high-temperature Voice-coil

Xmax

23mm excursion each direction (46 mm linear), voice coil remaining in homogeneous magnetic field, linear and lowest distortion

Passive | Active

Passive

Recommended amplifiers 

1Ch DSP + Amplifier are required. Min. recommended amplifier:  89 Vrms, 126 Vpk, 22,5 A; equivalent to 2000W@4?, with correct RMS & Peak limiting & compression settings

Recommended ASCENDO amplifiers  

(With additional external 1CH DSP: AIA2-6004), DSP4-6K2, DSP4-10K2  

Principle

Sealed

SPL

Calculated data
133 dB @ 63 Hz peak

Frequency range

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

 Efficiency 

88 dB  / 1W/m

Power handling 

2500 W

Impedance 

4 Ω  

Air volume displacement 

2,66 L / in comparison 18" standard cinema subwoofer 1,1 L

Directivity horizontal x vertical in Deg°

360°

Input terminal

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

Enclosure

Internally braced birch ply

Finish 

Matte black

Custom colour options 

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

Shape customisation 

Upon request 

Mounting 

Floor standing with feet

 

Technical modifications subject to change without further notice


 

Dimensions

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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: 97589969470

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pri
Lexington, US
★★★★★ 3
it's not bad
a coffee, tea, and alcohol drinker so i've gone thru a few of these. i knew i wouldn't see immediate results so i just tried to consistently brush my teeth with this. i can't say it made my teeth whiter but i think it brightened my teeth and helps to prevent it from staining? i didn't irritate my teeth or gums which is important, it helped my mouth to feel cleaner or was it bc of the flavors in it that makes it feel like that? also this little container is too expensive!
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Reviewed in the United States on February 14, 2026
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Amazon Customer
Phoenix, US
★★★★★ 5
Great Product
Its a good product. It works gradually whitening teeth. I use this powder on top of the Boka Prebiotic toothpaste and I have to say I am pretty impressed how clean my teeth are, the whitening and no sensitivity issues.
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Reviewed in the United States on May 30, 2026
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mary grace rutland
New York, US
★★★★★ 1
Awful packaging
Just got the product so I can’t give opinion on if it works to whiten my teeth but I will say the packaging is awful. The powder gets all over the lip of the container and all over the sink. Hard pass unless you want to clean your sink each time you use it.
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Reviewed in the United States on May 29, 2026
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Santa Celeste Moya
Omaha, US
★★★★★ 5
all the information you need in one book
Format: Paperback
I recently picked up Astral Projection for Beginners, recommended by a friend, and I wish I had discovered it sooner! Having tried to master astral travel with another book, I struggled to make progress, but Grace’s guide covers everything you need to know to successfully navigate this fascinating practice. The book delves into techniques for transitioning from your physical body to your astral body, addressing the fears that may arise during the process. Grace explains how fear can pull you back into your physical form, providing insights on what to expect when you embark on astral travel. This comprehensive approach makes it an essential read for anyone serious about exploring this realm. One of the standout features of the book is the inclusion of various case studies detailing the experiences of individuals who have successfully astral traveled, along with Grace’s own firsthand accounts. This blend of practical information and personal narratives makes the material relatable and engaging. You learn so much from others’ experiences, and it adds a layer of authenticity to the guidance provided. I had a close call with astral travel just last night while using the rope technique. When I caught sight of my physical body from my astral body, I panicked and was instantly pulled back. Grace addresses this fear in her book, explaining that it’s a common reaction and offering strategies to overcome it. I appreciated her reassurance and guidance, which gave me the confidence to try again tonight. As I was finishing the book on my way to New York, I felt inspired and determined to attempt astral travel again. I highly recommend this book to anyone interested in this practice. It’s a well-rounded resource that includes all the information you need—and then some—to successfully explore the world of astral travel.
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Reviewed in the United States on December 1, 2025
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SpiritOfTheSpar
Grantham, US
★★★★★ 5
Finally, A Journey Beyond
Format: Kindle
I approached this book with healthy skepticism but found myself completely transformed. After years of meditation with limited results, the step-by-step techniques described here finally helped me achieve my first genuine out-of-body experience last week—something I never thought possible. The author strikes the perfect balance between accessibility and depth. The historical context grounds everything in fascinating tradition while the practical methods are refreshingly clear and effective. I especially appreciated the safety precautions; they addressed anxieties I didn't even know I had. What surprised me most was how my astral experiences have positively affected my everyday life. I'm sleeping better, feeling more connected to others, and approaching challenges with newfound perspective. The section on navigating different astral realms is particularly enlightening—it matched my experiences so precisely that I got chills. For anyone curious about consciousness beyond the physical, this guide is the genuine article.
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Reviewed in the United States on May 18, 2025

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