21'' Speaker Line Array Double Magnet 4000W Powered 21 Inch Subwoofer

Name: 21'' Speaker Line Array Double Magnet 4000W Powered 21 Inch Subwoofer
Brand: Guangzhou Tianjun Electronic Technology Co., Ltd.
SKU: 2160612325

Guangdong, ChinaGuangzhou Tianjun Electronic Technology Co., Ltd.

US$208.00

10-199 pieces

US$199.00

200-399 pieces

US$192.00

400+ pieces

Sample price:US$223.00/piece.Request sample

Product profile

Activity

Active/Passive

Operation Mode

None

Speaker System

None

Model NO.

TW21L006-8

Speaker Material

None

Application

Commercial, Home, Stage/Outdoor/Party

Certification

CE, RoHS, EMC

Monitor

None

Product Name

21 Inch Subwoofer

Nominal Diameter

530mm/21.0inch

Rated Impedance

8 Ohm

AES Power

2000W

Peak Power

4000W

Frequency Range

30-1000 Hz

Sensitivity

96 dB

Ebp

55 Hz

Magnet Material

Ferrite Ring

Voice Coil Diameter

152mm / 6.0 in

Winding Material

Copper

Winding Depth

32.5mm / 1.27 in

Lxwxh

21.6*21.6*9.8 in

N.W.

24.8 Kgs

Customized Ohm

2/4/8 Ohm

Transport Package

Rigid Double Corrugated Shipping Carton

Trademark

OEM/ODM

Origin

Guangdong, China

Production Capacity

20000pieces/ Per Month

Company profile

Guangzhou Tianjun Electronic Technology Co., Ltd.Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 7 years CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryGuangzhou Tianjun Audio is an electro-acoustic manufacturer focused on PA speakers and related products, including compression drivers, woofers, subwoofers, tweeters, and coaxial speakers. The supplier reports strong customization, ODM, OEM, and R&D capabilities, supported by experienced engineers, product-development documentation, and engineering software. Production evidence includes three production lines, in-stock capability, finished-product inspection instructions, and ongoing quantity reconciliation. Quality-related procedures for corrective actions, complaints, and inspection are documented and followed, with two quality inspectors identified. However, the supplier lacks a valid manufacturing contract with affiliated subcontractors, has no outsourcing SOP, no overseas warehouse, showroom, agent, branch, or offline trade-show participation, and reports no available SDK or patents. Certification holding and customer cases are not sufficiently evidenced.

Supplier typeThe supplier is described as an electro-acoustic company engaged in the R&D, manufacture, and sale of PA speakers, with products spanning high-frequency drivers, mid-bass woofers, subwoofers, and coaxial speakers. This supports classification as a speaker and audio equipment manufacturer.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaints, and it provides training as an overseas service offering. However, it has no overseas warehouse, showroom, agent, or branch, so the evidence supports procedural complaint handling but not broad overseas service infrastructure.

R&D capabilityThe supplier reports a strong R&D department, engineers with 20 years of industry experience, new products during the past year, ODM capability, and use of engineering and simulation tools. R&D audit documentation is available, but the supplier reports no available SDK and zero patents, so its innovation capability is demonstrated mainly through product development and engineering rather than proprietary intellectual-property indicators.

Production capacityProduction evidence includes three production lines, in-stock capability, equipment for packaging, horn detection, and gluing, finished-product inspection instructions that are uniformly followed, and ongoing quantity reconciliation for each batch or mass production. Risks remain because there is no valid manufacturing contract with affiliated subcontractors and no outsourcing SOP.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. It also provides ODM services, indicating broad stated capability to adapt or develop products to customer requirements.