SKU: 18501864368

Ascendo Double 18" PRO Passive Sealed Shallow Subwoofer - Black

Sale price$6525.00 Regular price$7250.00
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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Ascendo Double 18" PRO Passive Sealed Shallow Subwoofer - BlackThe18 2 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 theatre market by storm. The 18 driver is an advanced carbon rohacell

The18-2 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 theatre 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 theatres 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 10,43” 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

2х18" 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 + 1 or  2Ch Amplifier are required. Min. recommended amplifier:  89 Vrms, 126 Vpk, 45 A; equivalent to 4000W@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
139 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 

5000 W

Impedance 

4 Ω  per woofer

Air volume displacement 

5,32 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: 18501864368

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Patricia Hurt
Battle Creek, US
★★★★★ 5
Summer perfect! Soft and light
Color: White, Size: Twin
I bought 3. As soon as I opened the bag there was an odor to them. They didn’t feel like made with natural products. I washed them & when they came out of the dryer they smelled good & are so soft. I will order other colors.
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Reviewed in the United States on April 8, 2026
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Brandon Gabriel
Port Orchard, US
★★★★★ 2
Impossible to keep clean
Color: White, Size: Queen, Color: White, Size: Queen
Great blanket. How TF are you supposed to keep it clean? They provide garment bag, but my zipper broke before I could even use it. I had one of these before and my ex lost the bag, so I had no idea it even came with one. These rip and get burned in the dryer. DON’T WASTE YOUR MONEY
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Reviewed in the United States on May 10, 2026
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Lisa
Pawtucket, US
★★★★★ 5
Soft and perfect for warmer days
Color: White, Size: Queen, Color: White, Size: Queen
Soft and I love the waffle design just get it perfect for warmer days. It’s not too light therefore still gives some warmth.
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Reviewed in the United States on March 5, 2026
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Noble1Uncle
Lake Worth, US
★★★★★ 4
Element of its stitched pattern may matter to some.
Color: Light Grey, Size: Queen (90" x 90"), Color: Light Grey, Size: Queen (90" x 90")
The blanket color was as expected, its fabric I believe will keep you warm, and no material odd scents which is good. Not a flaw, but what might matter to some, at least for me, is that in its stitched pattern it has a repeated section that has loose threading. I noted close up of that in my photos. I can see that element of the blanket being something that may snag on things sometimes over time from items you might set on this bed blanket. Nothing to cut much of a rating on but I wouldn’t of wanted this blanket due to that if I saw that design feature up close beforehand.
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Reviewed in the United States on June 1, 2026
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KB
Lexington, US
★★★★★ 5
🛌 Ultimate Lightweight Summer Comfort!
Color: Pure White, Size: King (104" x 90")
🧶 Beautiful and Soft Waffle TextureThe 100% cotton construction offers a wonderfully soft, textured feel that adds a touch of classic elegance to the bedroom. It feels exceptionally gentle against the skin and provides the perfect amount of cozy texture without any scratchiness. 🍃 Exceptional Breathability and WeightThe lightweight waffle weave allows for maximum airflow, making it absolutely perfect for hot sleepers and warm summer nights. It keeps the body comfortably cool while still providing that comforting weight of a real bed blanket. 📐 Generous and True King Size FitDraping beautifully over a large king-size bed, the dimensions provide excellent coverage on all sides without pulling or shifting. It acts as an ideal standalone layer for the summer or a sleek layering piece under a comforter during cooler months.
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Reviewed in the United States on June 2, 2026

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