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 Jul 28 - Aug 2

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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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Mike
Cuba, US
★★★★★ 5
Super Value
Size: 4 Panels, Color: Grey, Size: 4 Panels, Color: Grey
While not elegant, these dividers are study, stable, and made of surprisingly high-quality materials for the price. The fabric has a heavy-duty feel and stretches nice and tight with no need to individually Velcro the top and bottom in place as compared to other options. That makes screwing-in one bolt per panel section a bit of a challenge that is best done with two people. However, the results are worth the effort. Otherwise, super quick and simple assembly. The included hex wrench works OK. However, using a 5/32nd inch (4 mm) hex bit in a manual or electric screwdriver dramatically speeds assembly and disassembly. Everything fits nice and neatly back into the divider's shipping box provided one carefully preserves its packing materials and notes how the box was originally packed. Our organization ordered 8 additional 4 panel sets after initial testing of one set of panels indicated that they were an extremely cost-effective alternative to renting "pipe and drape" to support displaying and dividing artwork. We plan to use rubber backed pushpins (also available via Amazon) to affix items to the dividers as needed.
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Reviewed in the United States on March 23, 2026
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J.C.
New York, US
★★★★★ 5
Great Value
Size: 4 Panels, Color: Grey, Size: 4 Panels, Color: Grey
These are great value and ideal for a divider that needs to be moved or maneuvered a small distance on a regular basis. Assembly is quick with a drill (don't over-tighten). Fabric seems of good quality and the unit seems sturdy expecially when linked together.
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Reviewed in the United States on April 3, 2026
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TallPat
Lowell, US
★★★★★ 5
GET A VARIETY SET TO DECIDE WHICH FAVS TO BUY NEXT TIME. YOU’LL LIKELY WANT MORE FRESH OLIVES
Flavor Name: Green & Kalamata, Size: 4 Ounce (Pack of 5)
I did learn of these on Shark Tank and was glad I could try them through Amazon. (I discovered the lemon garlic variety was the one I enjoyed most, so I reordered just those next time.) These are fresh-tasting and hard to stop snacking at one 4-olive serving. If I had guests over, it’s something others would also enjoy. Nice that they come in zipper pack to keep them fresh.
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Reviewed in the United States on January 31, 2026
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nicholas fecteau
Boise, US
★★★★★ 5
Amazing ‘Go-to’ snack + !
Flavor Name: Kalamata, Size: 4 Ounce (Pack of 6)
First of all, the olives taste great. I’ve tried some other olive ‘snack’ brands in the past and Freestyle is completely next level in quality, texture and flavor! Secondly, we have zero motivation to buy olives in the jar or at the Whole Foods counter now since these packs work for any application and never seem to get LOST in the back of the fridge. Great branding btw! 2 of our three kids (age 10 and 5) have taken notice and are now a fan of the ‘lemon garlic’. The 10 yr old was initially skeptical after reading the flavor 😂, but after trying them with me was totally down. My wife and I love all the flavors because we use them for different applications - Lemon Garlic and Spicy for snacking (obviously) and the Kalamata for recipes/cooking. My wife is Greek and loves that she now has a healthier alternative always on hand - has even inspired more Greek dishes! Way to go and looking forward to more great Freestyle Snacks!
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Reviewed in the United States on May 7, 2022
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Suzips1
Boise, US
★★★★★ 4
Delicious and satisfying. Put more in
Flavor Name: Original, Lemon Garlic, Hot & Spicy, Size: 4 Ounce (Pack of 3)
Delicious. A bit over priced. Wish there were more in the package as I feel like I'm paying for packaging.
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Reviewed in the United States on February 18, 2026

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