Professional Passive 21 Inch Subwoofer Speaker Neodymium
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Product Highlights
- 21 Inch Neodymium Driver: 1x21 inch neodymium cone driver delivers powerful low-frequency response.
- High Power Output: Rated power 800W with peak power up to 1800W for professional performance.
- Premium Birch Plywood Cabinet: Constructed from first-grade Russian birch plywood with waterproof polyurea paint.
- Adjustable Directivity: Standard or cardioid configuration allows coverage of specific geometric audience areas.
- Deep Bass Performance: Low frequency limit reaches 29 Hz with maximum SPL of 138 dB.
- Flexible Customization: Offers full customization, minor customization, and customization from samples or designs.
- Professional Rigging System: Features external rigging kits with high-grade steel components and anti-corrosion coating.
- Versatile Application: Ideal for concerts, shows, DJ events, stage, KTV, and professional performances.
Product Attributes
- Customization
- Available
- Noise
- <102dB
- Hi-Fi
- Hi-Fi
- Model NO.
- KA21
- Activity
- Passive
- Operation Mode
- Wire / Remote Control
- Speaker System
- Optional Combination
- Speaker Material
- Wood
- Application
- Commercial, Home, Stage, KTV, Professional Performance
- Certification
- CE, RoHS
- THD
- 0.005%-0.01%
- Type
- Subwoofer Speaker
- Driver Lf
- 21"×1(Neodymium φ75mm)
- Frequency Response
- 60Hz-18kHz
- Rated Power
- 800W
- Peak Power
- 1800W
- System Sensitivity
- 138db
- Impedance
- 8ω
- Net Weight
- 49kg
- Wood Case
- High Quality Brich Plywood, Surface Coating
- Special Service
- OEM Service Offered
- Transport Package
- Strong Wooden Frame and Carton
- Specification
- 343× 379× 595
- Trademark
- Sinbosen
- Origin
- Guangdong Province, China
- HS Code
- 85182200
- Production Capacity
- 1000 Units/ Month
- Package Size
- 76.00cm * 78.00cm * 62.00cm
- Package Gross Weight
- 49.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Professional Passive 21 Inch Subwoofer Speaker Neodymium
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Professional Passive 21 Inch Subwoofer Speaker Neodymium -
Professional Passive 21 Inch Subwoofer Speaker Neodymium -
Professional Passive 21 Inch Subwoofer Speaker Neodymium -
Professional Passive 21 Inch Subwoofer Speaker Neodymium -
Professional Passive 21 Inch Subwoofer Speaker Neodymium -
Professional Passive 21 Inch Subwoofer Speaker Neodymium
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Product Description
Neodymium Subwoofer 21 inch professional speaker
| Type | High power subwoofer, 21" |
| Low frequency limit (-10 dB) | 29 Hz |
| Maximum SPL | 138 dB |
| Nominal directivity (-6 dB) | Standard or cardioid configuration |
| Transducers | 1 × 21″ neodymium cone driver |
| Acoustical load | Bass-reflex , Progressive vent design |
| Nominal impedance | 8Ω |
| Connectors | 2 × 4-point terminal block with push-in connection |
| Rigging and handling | External rigging kits |
| Inserts for rigging plates etc. | |
| Threaded insert | |
| Cabinet | FIrst grade Russian birch plywood |
| Front | Coated steel grill |
| Acoustically neutral 3D fabric | |
| Rigging components | High grade steel with anti-corrosion coating |
| Finish | Dark grey brown |
| Feature | Powerful |
| Clear low-frequency | |
| Stringent rigging conditions | |
| Weight (net) | 49 kg / 108 lb |
The KA21 subwoofer focuses on delivering deep, powerful bass effects. Provide users with a superior audio experience. Whether it's a concert, show, DJ show or other event, this set of speakers can meet every need.
Feature:
1x21" neodymium speaker woofer, 1800W
First grade Russian birch plywood with waterproofing Polyurea paint
Lightweight and compact
Simple, fast, integral rigging.
Directivity can be adjusted to cover specific geometric audience areas and ensure excellent frequency response stability.
Provides large concert-level low frequency response.
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR2411837". Items marked "
" are certified.
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Company Profile
Sinbosen Audio Equipment company limited, it's a Firm whose roots are deeply embedded into Guangzhou. Our Brand is Sinbosen. We make various kinds of professional audio equipment, such as switching power amplifier, Digital amplifier, DSP amplifier, Microphone and professional speaker.
Sinbosen audio have nearly 50 employees; Among them are 3 expertise designers, 6 QC staffs and 4 technical managers on site. We cover an area of 3, 000 square meters of production workshop, and possess 5 lines of assembly streamlines.
Sinbosen audio makes great efforts on quality and products development, now we cooperated with many clients overseas and our products have exported to more than 60 countries. We has good relationship with USA, Europe and South America. And our products have CE, RoHS, FCC, BQB certifications.
Sinbosen audio provide OEM/ODM service for 6 years and has obtained consistently high praise from our customers since it was set up.
Normally our lead time for mass order is 3-7days, for example 50PCS amplifiers can be finished with 3-5days. Small order or customized sample is welcomed.
Our company support three years warranty. Any problem welcome to contact us. Our services team is 18hours online. We will supply free after-service if any quality or product problem.
Sinbosen audio regards "reasonable prices, efficient production time and good after-sales service" as our tenet. We hope to cooperate with more customers for mutual development and benefits.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- 6th Floor, Building 7, Xiajijiao, Tinggang, Hongxing Village, Shimen Street, Baiyun District, Guangzhou, Guangdong, China
-
Plant Area
- 1200 square meters
-
Number of Employees
- 33
-
Registered Capital
- 100,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Guangzhou Port
-
Minimum Order Quantity
- 1 Set
-
Supply Chain Partners
- 30
Our Production Capability & Technical Expertise
- Main Products
- Line Array, Subwoofer, Fp Power Amplifier, Digital Amplifier, Audio Processor, Professional Speaker, Professional Microphone, Other Audio Equipment
-
Production Lines
- 7
-
Production Machines
- Manual Assembly Line
-
QA/QC inspectors
- 3 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection)
-
Inspection Method for Finished Products
- Have instruction but no written records
-
Customization Options
- Customization from Samples, Full Customization, Customization from Designs, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
R&D Engineers
- 2 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2015-04-09
-
Export Year
- 10 Years
-
Main Markets
- North America, Europe
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 8
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Product Certification
- RoHS, CE
-
Cooperated with Fortune 500
- No
FAQ
- What is the frequency response of the KA21?
- The subwoofer provides a frequency response from 60Hz to 18kHz with a low-frequency limit of 29 Hz.
- Can this speaker be customized?
- Yes, we offer full customization, minor customization, and customization from samples or designs.
- What is the minimum order quantity?
- The minimum order quantity is 1 set.
- What are the payment terms?
- We accept LC, T/T, D/P, and PayPal.
- How long does it take to produce an order?
- The average lead time is within 15 workdays regardless of the season.
- What certifications does the product have?
- The product is certified with RoHS and CE.
- What is the net weight of the speaker?
- The net weight is 49 kg (108 lb).
- Where is the product manufactured?
- The product originates from Guangdong Province, China.
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