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Sundown Audio U-18 D2 18" 1500W RMS Dual 2-Ohm U-Series Subwoofer
BZD 1353
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The U series is the most direct replacement for the discontinued Z v.3 series but at a much lower price. They use the same voice coil as the X v.2 series; therefore RMS power is 1500-watts rated conservatively.
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Product Details
- Sundown Audio U-18 D2 18 1500W RMS Dual 2-Ohm U-Series Subwoofer
- Specifications: DC Resistance (Re): 3.8 Ω, Resonance Frequency (Fs): 31.3 Hz, Equivalent Volume (Vas): 135.4 L, Electrical Q Factor (Qes): 0.37, Mechanical Q Factor (Qms): 3.41, Total Q Factor (Qts): 0.33, Voice Coil Inductance (Le): 2.62 mH, Force Factor (BL): 29.9 NA, Moving Mass (incl. Air Load) (Mms): 444.1 g, Suspension Compliance (Cms): 0.06 mm/N, Sensitivity: 92.3 dB 1w / 1m
- Box Recommendations: Sealed Enclosure Suggestion: 3.0 cu. ft., Ported Enclosure Suggestion: 4.0 cu. ft., Depth: 10.11 in, Outside Diameter: 18.66 in, Cutout: 16.69 in, Recommended Tuning: 32 Hz, Recommended Port Area: 64 sq. in.
- Features finalized terminal spacing, basket color, venting, cast aluminum surround clamp rings, etc.
- Designed as a bridge between the SA and X v.2 series, and a replacement for the discontinued Z v.3 series at a lower price
- RMS power of 1500-watts, similar motor design to the X v.2 series, 4 new cone bodies & surrounds, custom tooled cast aluminum vent spacers, and sound similar to the Z v.3 series
| Audio Output Mode | Surround |
| Mounting Type | Flush Mount |
| Enclosure Material | Cast Aluminum, Double stitched surround, Heavy duty cast baskets |
| Speaker Type | Subwoofer |
| Additional Features | Bass Boost |
| Antenna Location | Volume |
| Subwoofer Diameter | 18 Inches (45.7 cm) |
| Is Waterproof | FALSE |
| Control Method | Touch |
| Speaker Size | 18 Inches (45.7 cm) |
| Woofer Diameter | 18 Inches (45.7 cm) |
| Specific Uses For Product | Car audio volume enhancement, possibly home theaters or music studios |
| Processor Count | 1 |
| MP3 player | No |
| Controller Type | ring |
| Frequency Response | 30.95 Hz |
| Number of Audio Channels | 2.0 |
| Impedance | 2 Ohms |
| Compatible Devices | Car |
| Compatible with Vehicle Type | Car |
| Power Source | Corded Electric |
| Brand | Sundown Audio |
| Model Number | U-18 D2 |
| Model Name | U-18 D2 |
| Built-In Media | Sundown Audio U-18 D2 18' 1500W RMS Dual 2-Ohm U-Series Subwoofer |
| Number of Items | 1 |
| Customer Package Type | FFP |
| Series Number | 18 |
| UPC | 796516055169 |
| Manufacturer | Sundown Audio |
| Speaker Maximum Output Power | 1500 Watts |
| Input Voltage | 12 Volts |
| Number of Power Levels | 1 |
| Item Dimensions D x W x H | 10.11"D x 18.66"W x 18.66"H (25.7 x 47.4 x 47.4 cm) |
| Connectivity Technology | wired |
| Wireless Technology | No Wireless Communication Technology |
| Subwoofer Connectivity Technology | Wired |
| Connectivity Protocol | wired |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 18 Inches (45.7 cm) |
| Number Of Circuits | 1 |
What's in the box
Sundown Audio U-18 D2 18' 1500W RMS Dual 2-Ohm U-Series Subwoofer
Who Should Buy?
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Bass Enthusiasts
Ideal for individuals seeking powerful bass performance in their car audio systems with high RMS ratings.
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DIY Audio Projects
Great for hobbyists building custom sound systems who need high-quality subwoofers for various setups.
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Competition Drivers
Perfect for car audio competitors requiring intense sound pressure levels to excel in audio competitions.
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Casual Listeners
Not suitable for occasional listeners who do not require heavy bass and quality sound systems.
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Small Vehicles
May not fit well in compact cars due to its large size and power demands, requiring more space.
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Budget Shoppers
Less ideal for users on a tight budget as it represents a higher investment for significant audio performance.
Product Description
Customer Questions & Answers
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Question:
What are the key specifications of the Sundown Audio U-18 D2 subwoofer?
Answer: The Sundown Audio U-18 D2 subwoofer features a striking 18-inch diameter and is engineered for robust performance, delivering an impressive 1500W RMS power at a dual 2-ohm configuration. Its design incorporates a high-temperature voice coil and premium materials, providing excellent durability and sound quality. This subwoofer is ideal for audio enthusiasts looking for deep bass response and high output levels in large enclosures, making it perfect for competitive audio systems and bass-heavy music genres. -
Question:
What type of enclosure is recommended for the Sundown Audio U-18 D2?
Answer: For optimal performance, the Sundown Audio U-18 D2 subwoofer is best suited for either a properly sized ported or sealed enclosure. Ported enclosures enhance low-frequency extension and efficiency, while sealed designs may provide tighter bass response. Depending on your listening preferences and vehicle type, a 6-10 cubic foot enclosure is often recommended for this subwoofer, allowing it to perform at its best and deliver powerful, clear bass. -
Question:
What is the frequency response range of the Sundown Audio U-18 D2?
Answer: The Sundown Audio U-18 D2 subwoofer is designed to provide excellent low-frequency response, operating effectively within a range of 20Hz to 200Hz. This broad frequency response allows it to reproduce deep bass notes accurately while still being capable of handling higher frequencies seamlessly. This makes it versatile enough for various music genres, ensuring your audio system delivers high-impact sound with rich, immersive experiences. -
Question:
Can the Sundown Audio U-18 D2 be used in a home theater system?
Answer: Absolutely, the Sundown Audio U-18 D2 is versatile enough to be integrated into a home theater system to enhance bass performance significantly. Its powerful output and deep frequency capabilities allow it to elevate movie watching and gaming experiences by providing impactful sound effects and immersive audio atmospheres. Just ensure that your home theater amplifies the appropriate power to maximize the subwoofer's performance. -
Question:
What amplifier is recommended for the Sundown Audio U-18 D2?
Answer: To maximize the performance of the Sundown Audio U-18 D2 subwoofer, pairing it with an amplifier that can output at least 1500W RMS at the subwoofer's impedance level is essential. Brands like Sundown typically offer suitable amplifiers, ensuring you achieve optimal power handling without distortion. For example, a Sundown SAX-1200D amplifier would be a fitting match, providing clean, robust power, which is crucial for dynamic listening experiences. -
Question:
What is the build quality of the Sundown Audio U-18 D2 like?
Answer: The Sundown Audio U-18 D2 is built with high-quality materials to ensure durability and performance under pressure. Its robust design includes a cast aluminum frame, high-temperature voice coil, and competition-grade surround, allowing it to withstand high power levels and repeated use without degradation. This makes it ideal for serious audiophiles and competitors who require reliable and durable equipment for various audio challenges. -
Question:
How does the Sundown Audio U-18 D2 compare to other subwoofers in its class?
Answer: Compared to other subwoofers in its class, the Sundown Audio U-18 D2 stands out due to its impressive power handling, high-quality build, and exceptional sound quality. Its ability to deliver clear, deep bass effectively makes it a favorite among audio enthusiasts. While other subwoofers may offer similar specifications, the U-18 D2's engineering and design are tailored specifically for high-performance and competitive environments, making it a top choice for serious bass lovers. -
Question:
Is the Sundown Audio U-18 D2 suitable for competitions?
Answer: Yes, the Sundown Audio U-18 D2 is highly regarded for competitive use due to its high SPL capabilities and ability to produce deep, accurate bass with clarity. Its solid build quality and power handling make it an ideal choice for competitions where sound pressure level and performance are crucial. Many competitors trust this model to provide the edge they need to excel in various sound-off events. -
Question:
What type of music does the Sundown Audio U-18 D2 excel at reproducing?
Answer: The Sundown Audio U-18 D2 excels at reproducing bass-heavy music genres such as hip-hop, electronic, and rock, where deep bass is essential for an engaging audio experience. Its capability to handle low frequency responsibly promotes clarity in bass lines while retaining overall sound quality. Whether you are listening to heavy beats or intricate bass lines, this subwoofer ensures a rich listening experience that brings music to life. -
Question:
Where can I buy the Sundown Audio U-18 D2 18 1500W RMS Dual 2-Ohm U-Series Subwoofer?
Answer: You can purchase the Sundown Audio U-18 D2 subwoofer from Ubuy. Ubuy offers a seamless shopping experience, along with various options tailored for customers in Belize. Their platform often features exclusive deals and straightforward access to product details, ensuring you can find the right audio solution to enhance your sound experience.
SundownAudio Component Subwoofers U-18 D2 Editorial Review
The Sundown Audio U-18 D2 18" subwoofer receives mixed reviews from customers. On one hand, users praise its ability to handle high power, deliver strong and impressive bass, and make the car roof rattle. However, there are also customers who experienced issues with the product, with one person reporting that the subwoofer stopped working after less than 2 hours of use. This customer claims that the manufacturer refused to cover it under warranty and is asking for an additional $400 to return the non-functional product. Overall, the Sundown Audio U-18 D2 18" subwoofer seems to have a powerful and impactful performance, but there are concerns regarding its reliability and customer support.
Customer Reviews & Ratings
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5 Star
61%
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4 Star
0%
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3 Star
25%
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2 Star
0%
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1 Star
14%
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Pros
- Can handle high power and deliver impressive bass
- Creates strong vibrations and rattles the car roof
Cons
- Reports of product failure after a short period of use
Product Price History
Important information
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BZD 1353
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Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Features & Benefits
- U series is a replacement for the discontinued Z v.3 series
- Lower price compared to Z v.3 series
- Same voice coil as the X v.2 series
- RMS power of 1500-watts
- Conservative rating
- Direct bridging between SA and X v.2 series



