- Home Page /
- Electronics /
- Home Audio /
- Speakers /
- Subwoofers /
- RCF LF21X451 21-inch Sub Woofer 2000 Wrms 400...
0 ratings
Item #:
89312146
RCF LF21X451 21-inch Sub Woofer 2000 Wrms 4000 Watts Max 4.5" Fiberglass Inside | Outside Copper Voice Coil Dual Forced Air Vent 8 Ohm
Item #:
89312146
ETB 163673
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Tuesday, July 28
Secured transaction
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.
Our Top Logistics Partners
4000 Watt continuous program power handling for unmatched performance!
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Power Handling
Delivers 2000 Wrms and peaks at 4000 Watts, ensuring powerful and impactful bass for professional audio setups and demanding environments.
Advanced Coil Design
Features a 4.5" fiberglass inside and outside copper voice coil for enhanced thermal management, reducing distortion and improving sound fidelity during prolonged use.
Effective Ventilation
Dual forced air vent system prevents overheating, ensuring consistent performance and longevity even in high-energy sound environments, making it ideal for DJs and sound engineers.
Product Details
| Item Weight | 45 lbs (20.41 kg) |
Who Should Buy?
-
Professional DJs
DJs requiring powerful bass for large events will benefit from the high output and reliability of this subwoofer.
-
Concert Venues
Ideal for concert venues needing deep, impactful bass to enhance live performances and crowd engagement.
-
Home Theater Enthusiasts
Home theater setups that prioritize low-frequency performance will find this subwoofer enhances movie experiences dramatically.
-
Casual Listeners
Casual music listeners who don't need extreme power may find this subwoofer excessive for their needs.
-
Small Spaces
Users with limited space may find a 21-inch subwoofer too large and overpowering for their environment.
-
Budget Consumers
Not suitable for budget-conscious buyers as this high-performance subwoofer comes with a premium price tag.
Product Description
RCF LF21X451 21-inch Sub Woofer 2000 Wrms 4000 Watts Max 4.5" Fiberglass Inside | Outside Copper Voice Coil Dual Forced Air Vent 8 Ohm
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What are the key features of the RCF LF21X451 Sub Woofer?
Answer: The RCF LF21X451 Sub Woofer is packed with impressive features, including a substantial 21-inch diameter, a power handling capacity of 2000 Wrms and a maximum output of 4000 Watts. It is constructed with a robust 4.5-inch fiberglass inside and an outside copper voice coil, which enhances its efficiency and sound clarity. Additionally, its dual forced air vent design ensures optimal cooling during high-performance usage, making it suitable for both high-end audio installations and live performance applications. -
Question:
What types of audio systems is the RCF LF21X451 compatible with?
Answer: The RCF LF21X451 Sub Woofer is compatible with a variety of audio systems, including professional PA systems, home theater setups, and high-fidelity stereo systems. Its 8 Ohm impedance allows for versatility in matching with amplifiers, providing a seamless integration into existing setups. Whether you're building a large concert rig or enriching a home audio experience, this subwoofer can deliver deep bass and clear sound reproduction across genres. -
Question:
How does the dual forced air vent feature improve performance?
Answer: The dual forced air vent feature in the RCF LF21X451 helps to improve performance by maintaining optimal driver temperature during intense usage. This reduces the risk of overheating and distortion, ensuring you receive clean, base-heavy sound throughout extended listening sessions. This design is particularly beneficial in live performances where prolonged periods of high output are common, as it allows the subwoofer to maintain sound quality even under stress. -
Question:
What kind of environments is the RCF LF21X451 suited for?
Answer: The RCF LF21X451 Sub Woofer is designed for both indoor and outdoor environments. Its robust build quality and cooling system make it ideal for concerts, festivals, and events where powerful bass is required. Additionally, it fits well in studio settings for music production, giving sound engineers and producers the low-end response needed for mixing various musical genres. -
Question:
What is the benefit of using a fiberglass cone in the RCF LF21X451?
Answer: The fiberglass cone used in the RCF LF21X451 offers superior durability and acoustic performance compared to traditional paper cones. This material enhances sound clarity by providing better rigidity and lower distortion during high output levels. As a result, users can experience tight, controlled bass that is crucial for both live performances and recorded music playback, making this woofer an excellent choice for discerning audio enthusiasts. -
Question:
How does the RCF LF21X451 enhance sound quality in audio setups?
Answer: The RCF LF21X451 enhances sound quality through its powerful output capabilities, efficient design, and high-quality construction materials. By delivering profound lows and maintaining clarity at high volumes, it complements mid-range and high-frequency speakers effectively. Whether used in a professional setting or for personal enjoyment, this subwoofer helps ensure a well-rounded listening experience that immerses users in rich, full sound. -
Question:
What configurations work best with the RCF LF21X451?
Answer: The optimal configurations for the RCF LF21X451 typically involve pairing it with amplifiers designed to handle its high power requirements. Users often find great results when matched with active or passive systems that support 8 Ohm loads. This subwoofer is frequently combined with mid-range and high-frequency speakers to create a balanced sound stage, making it a popular choice for both DJ setups and live band environments. -
Question:
Is installation of the RCF LF21X451 complex?
Answer: The installation of the RCF LF21X451 Sub Woofer can be straightforward, especially for users familiar with audio equipment. It typically involves connecting to an amplifier and integrating it with existing audio setups. For those new to audio installations, consulting with professional audio installers can ensure optimal placement and tuning, enabling users to enjoy the full benefits of this powerful subwoofer in their sound systems. -
Question:
Can the RCF LF21X451 be used for home theater setups?
Answer: Yes, the RCF LF21X451 is an excellent choice for home theater setups. Its low frequency response helps create a dynamic movie-watching experience by delivering deep, impactful bass that enhances action scenes and soundtracks. Coupling it with quality surround sound speakers can elevate the entire audio experience, making it feel more immersive and lifelike, perfect for movie enthusiasts. -
Question:
Where can I buy the RCF LF21X451 Sub Woofer in Ethiopia?
Answer: You can purchase the RCF LF21X451 Sub Woofer from Ubuy in Ethiopia. Ubuy offers a range of audio equipment, including this powerful subwoofer, along with detailed product descriptions and customer reviews to help you make an informed decision. Their platform also ensures an efficient shopping experience with options tailored to your specific needs.
RCF Subwoofers Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
ETB 163673
Order now and get it around Tuesday, July 28
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Handling 4000 Watts continuous power ensures long-lasting performance.
- Designed with 4.5-inch fiberglass inside/outside copper voice coil for durability.
- High sensitivity of 97 dB for efficient sound reproduction.
- Wide frequency range from 28 Hz to 1 kHz for rich, deep bass.
- Features dual-forced air ventilation to minimize power compression.
- Advanced BL factor of 30.5 T·m for faster and accurate low frequency response.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.