SKU: 7201556201

Ascendo 18" PRO Passive Sealed Shallow Subwoofer - Black

Sale price$4612.50 Regular price$5125.00
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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1

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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:
  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: 7201556201

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Brock1234
Waukegan, US
★★★★★ 5
My New Favorite Socks
Size: 6-10, Color: Halo Gray/Assorted
These have quickly become mine and my mom's favorite socks. We wear them with tennis shoes, Hey Dudes, and more. The fabric is incredibly soft and comfortable, they do not budge/fall in my shoe, and are extremely well made. I have become so attached to these socks, that I no longer want any other brand.
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Peety
Cuba, US
★★★★★ 5
Fit is great!
Size: 6-10, Color: Halo Gray/Assorted
These socks fit perfectly and never slip!
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Reviewed in the United States on April 9, 2026
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tara speece
Birmingham, US
★★★★★ 5
Comfortable and Durable No-Show Socks
Color: Illusion Green Assorted, Size: Medium
The Under Armour Essential 2.0 No Show Socks are fantastic! This 6-pair pack is perfect for everyday wear, and the socks fit snugly without slipping off the heel. They are lightweight, breathable, and keep my feet comfortable all day, whether I’m working out or running errands. The material feels durable and high-quality, holding up well after multiple washes without losing shape or elasticity. I also appreciate the moisture-wicking feature, which keeps my feet dry during exercise. Overall, these are reliable, comfortable, and well-made socks that are worth every penny.
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Reviewed in the United States on November 16, 2025
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Kailey S
Belleville, US
★★★★★ 5
Great socks
Color: Black/Assorted, Size: 6-10
These socks lasted me a while and are comfortable and don't ride down like some of my others as much
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Caitlin
Waukegan, US
★★★★★ 5
Will last a good while despite not being overly thick.
Color: Black/Assorted, Size: 6-10
I purchased these socks about 14 months ago and I use them regularly with maybe five other pairs of socks made by a different brand. No holes so far. I used to buy Hanes and they barely lasted a week before I had to throw a pair of them out. I still use all six of these socks (assuming I can find them!) I often walk outside on my cement patio or tiptoe through the grass in socks so I am a little tough on them I guess you could say. I'm also very active. I don't exercise at a gym and thus don't use them in tennis shoes but walk most of the day when at home. I run around in my yard doing yard work and gardening. I also have worn them regularly at work while walking around in my steel toed shoes (which rub) and they somehow lived through that. They still look fine: no discoloration or weak spots in the heel which is usually the first sign of wear for me. They are comfortable too. I don't feel any line at the toes and they don't rub or fit too tight in any way. I love the height of these, they are so short that they slip down in your shoe but not overly tall (I don't like the look and feel of tall socks). They are also lightweight and very breathable. So great quality for the price. I'd recommend and I will likely buy the same brand in the future.
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Reviewed in the United States on November 17, 2022

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