SKU: 90811106533

Stealth Acoustics B30g Invisible Subwoofer Pair

$1124.55 $1249.50
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

Stealth Acoustics B30g Invisible Subwoofer PairRecommended Uses Added Bass for Foreground Added Bass for Background Music Whole House or Multi Room Audio Systems Surround Sound Systems Home Theater System Optional Accessories PS 30 PlaceSaver BX 30 MDF Acoustical Back Box MBA 30 UL Listed Adjustable Metal Back Box Warranty 15 Year Extended Warranty Upgrade SA255 Monural Subwoofer Amplifier INVISIBLE SUBWOOFER The Stealth Acoustics Model B30G is a two panel monaural subwoofer speaker system that

Recommended Uses

  • Added Bass for Foreground
  • Added Bass for Background Music
  • Whole-House or Multi-Room Audio Systems
  • Surround Sound Systems
  • Home Theater System

Optional Accessories

  • PS-30 PlaceSaver
  • BX-30 MDF Acoustical Back Box
  • MBA-30 UL Listed Adjustable Metal Back Box
  • Warranty - 15 Year Extended Warranty Upgrade
  • SA255 Monural Subwoofer Amplifier

INVISIBLE SUBWOOFER

The Stealth Acoustics Model B30G is a two-panel monaural subwoofer speaker system that becomes completely invisible after installation. Ideal for any surround sound, foreground music or whole-house audio system that needs extra bass output, each B30G panel incorporates two acoustically coupled, high-quality, high-power 8” (203 mm) cone woofers.  B30G panels may be mounted separately or stacked to achieve desired acoustical results.

Stealth Acoustics recommends the companion Model SA255 250-watt subwoofer amplifier/crossover as a matched amplifier for the B30G subwoofer speakers. Stealth Acoustics also offers a line of full-range speaker panels that when combined with the B30G, deliver a complete, totally invisible audio solution.

The B30G has a rigid frame that attaches directly to standard structural framing. The paintable active diaphragm face is bonded to the frame of the speaker panel, creating an active area surrounded by a stable mounting area.  It may be installed in either the wall or ceiling and on-site finishing options include latex paint, light wallpaper, fabrics and selected texture coats. There is no need for special vellums or other nonstandard wallboard finishing materials. Advanced finishing methods may be supported using special techniques.

Specifications

Frequency Response:

20Hz to 160Hz

Power Capacity:

100 watts RMS

60 watts minimum
recommended power

Sensitivity:

86 dB (1 watt / 1 meter)

System Impedance:

8Ω nominal

 

Driver Components:

Low-frequency:

Four 1.5” (38 mm) voice coil, 8” (203 mm) woofers

Ceramic 20 oz. (622 gr) magnet

Polar Dispersion:

170 degrees vertical and horizontal

 

Dimensions:

Width: 15-7/8” (403 mm)

Height: 30″ (762 mm)

Mounting Depth:

2-1/2” (64 mm)

Product Weight:

4.8 kg each panel

Shipping Weight:

21 kg per pair


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: 90811106533

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4.4 ★★★★★
Based on 18 reviews
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R
Verified Purchase
Renee
Waukegan, US
★★★★★ 5
Feels luxury, I approve
Size: King, Style: Warm
I have purchased high end comforters/duvet inserts and this one is somehow my favorite. It's so thick and fluffy. I was going to do the double duvet insert method to create an extra lush bed situation, but honestly it's not needed at all with this comforter! It poofs up wonderfully inside my duvet cover (king duvet, king insert) and it's like heaven. It's very cozy yet airy, and it moves well during the night and does not fee too heavy despite its weight. This thing is definitely on the warm end and probably won't be suitable for Florida summers, but depending on how you set the AC at night it could be fine! The comforter is weighty, it feels like quality, and has a soft fabric. I wouldn't use it without a duvet cover, that's more of an aesthetic choice but I like keeping it clean. The white is very white. Honestly, I will be getting another one simply because I'm so impressed. Definitely no need to drop $300+ dollars elsewhere.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
R
Verified Purchase
Rosalie
Fort Morgan, US
★★★★★ 4
ALL SEASON IS TOO WARM!
Size: King, Style: All-Season
I got the King, All Season, to squeeze into a Queen duvet for extra floof and it's sooo cozy. Highly recommend. I redacted 1 star though because although it says All Season, the amount of down in here feels like it's for winter. The first night I used it I woke up dripping in sweat. It's currently March, I live in Los Angeles area, hitting about 75° weather outside rn, but I sleep with AC full blast at night (usually hit about 64 when I wake up). I can't sleep with it, I'll need to buy the "cool" one, and hope that isn't tooo thin. Don't get me wrong, it's a great insert, but holy hell, it's too heckin' warm. I saw someone else mention it and wish I had honed in on their comment. I don't wanna return it as it was used, so I'm stuck with it now. *UPDATE* I am back because I also bought the "Cool" blanket as well after experiencing the heat of the all season and it too is also too hot for me. I've had a duvet before but I guess not filled to the capacity of these blankets. If you're a hot sleeper maybe look elsewhere?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
K
Verified Purchase
Kingsize
San Leandro, US
★★★★★ 5
Buy this instead of the ‘brand name’ one
Size: Twin, Style: Warm
Tl:DR: Buy it, it’s super cheap, better than the one I paid 2x the price for and soft as it can get, and it really is a ‘Winter comforter’. This review is going to sound like I got paid off for it but I actually didn’t. I bought another comforter prior to this one, paid close to double of this one and that the ‘on sale’ price, and it is trash compared to this Amazon basics one. Both claim to be thick warm comforters but I can literally stack two of the other brand and maybe they’d be almost as thick as the Amazon one. I only bought this one because the other ‘winter’ one I bought was so thin and flimsy I figured adding another ‘cheapie’ one might make me not freeze to death. As soon as I arrived I noticed that this Amazon one was WAY thicker, nicer looking, softer and warmer than the old one. Just to try it out I stacked both of them together to see if I wouldn't freeze to death like I was doing with the old ‘expensive’ one: five minutes in and I was sweating. That’s all it took, I immediately removed the duvet cover from the old one, switched it to the Amazon one and threw the old one somewhere where I couldn’t see the money I had wasted, and yes the Amazon was warmer and softer even WITHOUT the duvet cover. I’m probably going to get the light version for when fall hits and I don’t quite need the heavy one yet. Buy it you won’t regret it and hey it’s Amazon brand so if you don’t like it they’ll take care of you, but I HIGHLY doubt you won’t love this thing.
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Reviewed in the United States on April 14, 2026
R
Verified Purchase
Ryan flores
Carnegie, US
★★★★★ 5
Great duvet insert
Size: King, Style: Light
Perfect duvet insert. I got a pretty expensive duvet to cover this and they worked great together. The fit was perfect and I didn’t feel like the duvet was smaller than its cover. This was a cheap option that keep us warm while not being too think. This product is also breathable and recommend if you live in a place that transitions from hot to cold often.
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Reviewed in the United States on April 6, 2026
J
Verified Purchase
Juliane P.
Battle Creek, US
★★★★★ 5
Great mid-weight comforter
Size: King, Style: Light
Great comforter, especially for the price. I put it in the dryer for a bit when I first got it and it became nice and fluffy. Perfect mid-weight duvet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026

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