--- product_id: 46645691 title: "18 Sound 21-inch Extended LF Neo Woofer Transducer with High Grade Neodymium Magnet Assembly 8 Ohms - 21NLW4000" brand: "18 sound" price: "$434.76" currency: USD in_stock: false url: https://www.desertcart.us/products/46645691-18-sound-21-inch-extended-lf-neo-woofer-transducer-high store_origin: US region: United States of America --- # 3600W Power Handling Made in China 21" Woofer Size 18 Sound 21-inch Extended LF Neo Woofer Transducer with High Grade Neodymium Magnet Assembly 8 Ohms - 21NLW4000 **Brand:** 18 sound **Price:** $434.76 **Availability:** ❌ Out of Stock ## Summary > 🎶 Feel the Beat, Own the Room! ## Quick Answers - **What is this?** 18 Sound 21-inch Extended LF Neo Woofer Transducer with High Grade Neodymium Magnet Assembly 8 Ohms - 21NLW4000 by 18 sound - **How much does it cost?** $434.76 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/46645691-18-sound-21-inch-extended-lf-neo-woofer-transducer-high) ## Best For - 18 sound enthusiasts ## Why This Product - Trusted 18 sound brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unleash the Bass:** Experience deep, resonant sound that transforms your audio experience. - • **Compact Yet Mighty:** Dimensions of 27.94 cm x 55.88 cm x 55.88 cm fit seamlessly into your setup. - • **Designed for Impact:** Crafted for both car audio and theater setups, versatility is at your fingertips. - • **Lightweight Champion:** At just 13.018 kg, this woofer packs a punch without weighing you down. - • **Power Meets Precision:** With a staggering 3600W power handling, feel every beat like never before. ## Overview The 18 Sound 21NLW4000 is a powerful 21-inch neo woofer designed for car audio and theater applications, boasting an impressive 3600W power handling capacity. With compact dimensions and a lightweight design, it delivers deep, impactful sound without compromising on space. ## Description 18 Sound 21-inch Extended LF Neo Woofer Transducer with High Grade Neodymium Magnet Assembly 8 Ohms - 21NLW4000 || 94 dB SPL 1W / 1 m average sensitivity || * 100 mm (4 in) Interleaved Sandwich Voice coil (ISV) || * 3200 W program power handling || * 70 mm (2.76 in) peak to peak excursion || * Composite reinforced straight ribbed cone || * Optimized high grade neodymium magnet assembly || || * Recommended for subwoofer usage in compact vented or bandpass enclosures || * Nominal Diameter 533mm (21 in) || * Rated Impedance 8 Ohm || * AES Power 1500W || * Peak Power 7200 W || * Frequency Range 30-1800Hz || || * Power Compression @-10dB 0.62 dB || * Power Compression @-3dB 2.18 dB || * Power Compression @@Full Power 3.57 dB || * Max Recomm.Frequency 150Hz || * Recomm.Enclosure Volume 120-300 It (4.24 - 10.60 cuft) || * Minimum Impedance 6 Ohm at 25 DegreesC || * Max Peak To Peak Excursion 70 mm (2.76 in) || || * Voice Coil Diameter 100 mm (4 in) || * Voice Coil winding material Copper wire * Suspension Triple-roll.Polycotton || * Cone Complex Composite * THIELE SMALL PARAMETERS || * Fs 29 Hz || * Re 4.9 Ohm || * Sd 0.166 sq.mt.(257.30 sq.in.) || * Qms 22.0 || * Qes 0.38 * Qts 0.37 || * Vas 305 It.(10.77 cuff) || * Mms 380 gr.(0.83 lb) || * BI 30.0 Tm || * Linear Mathematical Xmax +/- 15 mm (+/- 0.59 in) * Le (1kHz) 2.80 mH || * Ref.Efficiency 1W@1m (half space) 2% * || || * Overall diameter 545mm (21.46 in) || * N.of mounting holes and bolt || * Mounting holes diameter 8.5 mm (0.33 in) * Bolt circle diameter 520mm (20.47 in) || * Front mount baffle cutout diameter 492 mm (19.37 in) || * Rear mount baffle cutout diameter 490 mm (19.29 in) * Total depth 245 mm (9.64 in) || * Flange and gasket thickness 18 mm (0.7 in) || * Net weight 11.6 kg (25.5 Ib) * Shipping weight 13.1 Kg (28.8 lb) || * CardBoard Packaging dimensions 570x570x290 mm (22.4x22.4x1 1.4 in) || ## Features - 94 dB SPL 1W / 1 m average sensitivity || * 100 mm (4 in) Interleaved Sandwich Voice coil (ISV) || * 3200 W program power handling || * 70 mm (2.76 in) peak to peak excursion || * Composite reinforced straight ribbed cone || * Optimized high grade neodymium magnet assembly || - * Recommended for subwoofer usage in compact vented or bandpass enclosures || * Nominal Diameter 533mm (21 in) || * Rated Impedance 8 Ohm || * AES Power 1500W || * Peak Power 7200 W || * Frequency Range 30-1800Hz || - * Power Compression @-10dB 0.62 dB || * Power Compression @-3dB 2.18 dB || * Power Compression @@Full Power 3.57 dB || * Max Recomm.Frequency 150Hz || * Recomm.Enclosure Volume 120-300 It (4.24 - 10.60 cuft) || * Minimum Impedance 6 Ohm at 25 DegreesC || * Max Peak To Peak Excursion 70 mm (2.76 in) || - * Voice Coil Diameter 100 mm (4 in) || * Voice Coil winding material Copper wire * Suspension Triple-roll.Polycotton || * Cone Complex Composite * THIELE SMALL PARAMETERS || * Fs 29 Hz || * Re 4.9 Ohm || * Sd 0.166 sq.mt.(257.30 sq.in.) || * Qms 22.0 || * Qes 0.38 * Qts 0.37 || * Vas 305 It.(10.77 cuff) || * Mms 380 gr.(0.83 lb) || * BI 30.0 Tm || * Linear Mathematical Xmax +/- 15 mm (+/- 0.59 in) * Le (1kHz) 2.80 mH || * Ref.Efficiency 1W@1m (half space) 2% * || - * Overall diameter 545mm (21.46 in) || * N.of mounting holes and bolt || * Mounting holes diameter 8.5 mm (0.33 in) * Bolt circle diameter 520mm (20.47 in) || * Front mount baffle cutout diameter 492 mm (19.37 in) || * Rear mount baffle cutout diameter 490 mm (19.29 in) * Total depth 245 mm (9.64 in) || * Flange and gasket thickness 18 mm (0.7 in) || * Net weight 11.6 kg (25.5 Ib) * Shipping weight 13.1 Kg (28.8 lb) || * CardBoard Packaging dimensions 570x570x290 mm (22.4x22.4x1 1.4 in) || ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01LY1OOON | | Additional Features | Speakers | | Antenna Location | Car | | Audio Output Mode | Stereo | | Brand | 18 Sound | | Built-In Media | CAR | | Color | Black | | Compatible with Vehicle Type | Car | | Control Method | Voice | | Customer Package Type | Standard Packaging | | Global Trade Identification Number | 00611138346917 | | Impedance | 8 Ohms | | Is Waterproof | False | | Item Dimensions D x W x H | 22.4"D x 11.4"W x 22.4"H | | Item Type Name | 18 Sound 21NLW4000 21" 3600W Neo Woofer | | Manufacturer | 18SOUND | | Model Name | 18SOUND | | Model Number | 21NLW4000 | | Mounting Type | Car Mount | | Number of Items | 1 | | Power Source | Corded Electric | | Signal-to-Noise Ratio | 90 | | Speaker Maximum Output Power | 3600 Watts | | Speaker Size | 21 Inches | | Speaker Type | Woofer | | Subwoofer Diameter | 21 Inches | | UPC | 611138346917 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** 18 Sound - **Speaker Maximum Output Power:** 3600 Watts - **Audio Output Mode:** Stereo - **Mounting Type:** Car Mount - **Model Name:** 18 Sound ## Images ![18 Sound 21-inch Extended LF Neo Woofer Transducer with High Grade Neodymium Magnet Assembly 8 Ohms - 21NLW4000 - Image 1](https://m.media-amazon.com/images/I/91PpLdWfkwL.jpg) ![18 Sound 21-inch Extended LF Neo Woofer Transducer with High Grade Neodymium Magnet Assembly 8 Ohms - 21NLW4000 - Image 2](https://m.media-amazon.com/images/I/91yhyD740-L.jpg) ![18 Sound 21-inch Extended LF Neo Woofer Transducer with High Grade Neodymium Magnet Assembly 8 Ohms - 21NLW4000 - Image 3](https://m.media-amazon.com/images/I/91f8gUJeUyL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 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