NVX NE121S Empty Single 12" Sealed Subwoofer Enclosure

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NVX NE121S

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NVX NE121S Empty Single 12" Sealed Enclosure-video

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Product highlights

• 12" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Learn more about the ne121s

Universal – fits most vehicles.

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List price $99.99

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Current Promotions (1 offer)

40% off a Sound Deadening Trunk Kit!

Get the most out of your Loaded Enclosure with the NVX SDTK20. Eliminates road noise, quiet vibrations, and increase the sound quality and output of audio system, 50%. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

NVX NE121S Empty Single 12

NVX NE121S Empty Single 12" Sealed Enclosure

https://images.sonicelectronix.com/images/5427831/main/sdtk20.jpg

40% off

NVX NE121S Empty Single 12" Sealed Enclosure

$89 ⁹⁹

NVX SDTK20

$49 ⁹⁹

Priced separately $139 ⁹⁸

Promo Savings of $20 ⁰⁰

Total price:

$119 ⁹⁸

Product Highlights

• 12" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Description

Authorized dealer

Product Details:

Not compatible with NVX VC-Series Subwoofers
12" Single Sealed Subwoofer Enclosure
Made from 3/4" Medium Density Fiberboard (MDF) construction
Built with precision CNC technology for exceptional accuracy
Pre-lined with Poly-Fil for improved acoustic response
Premium Black Carpet with Black NVX Logo
Spring Loaded Push Terminals
Maximum subwoofer mounting depth: 10-1/8"
Subwoofer cutout diameter: 11-7/32"
Internal box volume: 1.00 cubic feet
Dimensions: 13.00" D x 15.00" W x 15.00" H
Authorized Internet Dealer
1-year Sonic Electronix Warranty

Frequently Asked Questions (FAQ)

Why should I choose a sealed enclosure like the NE121S over its ported counterpart (NE121P)?

NE121S is better for audiophiles who want a tight but not forceful bass. Like other sealed enclosures, NE121S is quite smaller so it would save some space in your car. However, if you really want an earth-shattering low-end, go ahead with NE121P instead.

What kind of subwoofer should be best paired with the NE121S?

Look for a 12” sub with a mounting depth that doesn’t exceed 10-1/8” and could fit within a 11-7/32” cutout diameter. It should operate within a 1 cubic feet volume for a tight, punchy bass without the woofer over-extending.

Will a high-excursion 12" sub with a massive magnet hit the back panel of NE121S?

Most likely not. For example, the NE121S has a generous mounting depth of up to 10-1/8". That’s enough clearance for even the beefiest competition-grade magnets to breathe without slamming against the rear wall.

As a metalhead, I want that tight, "kick-in-the-chest" bass for the drums. Can the NE121S handle those low frequencies?

Absolutely. Since it's a single sealed box, it provides the air spring needed for fast, accurate response. It ensures your bass notes stop and start instantly, making it perfect for double-bass pedals or fast rock drums.

Can I add more Polyfill to the NE121S?

We don't recommend. NVX includes just enough to help the box act about 15-20% larger sound-wise. Adding too much can actually choke the sub's movement. Only add more if your sub's specs significantly exceed the box's actual internal volume.

What’s with the choice to build NE121P with rounded corners?

It’s for durability and fitment. Sharp MDF corners under carpet are prone to bruising or chipping during installation. Rounded edges prevent the carpet from tearing and make it much easier to slide the box into tight trunk gaps.

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Specifications & Details

Box/Enclosure specifications

Subwoofer Size

12"

Subwoofer Cutout Shape

Round / Circle

Box Type

Sealed

Number of Subwoofers

1

Box Style/Shape

Square/Rectangle

Cutout Diameter or Length

11-7/32"

Maximum Speaker Depth

10-1/8"

Total Box Volume

1.00 cubic feet

Wood Thickness

3/4"

Number of Terminals

1

Terminal Type

Binding posts (banana clip ready)

Box Exterior Color

Black

Box Finish

Carpet

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Sonic Electronix

Customer Ratings & Reviews

NVX NE121S Empty Single 12

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