Does the speaker come with rigging?

Yes, it features a compact cabinet with rigging built inside.

What payment methods are accepted?

We accept T/T, PayPal, and Western Union.

Powerful Single 21"Subwoofer Speaker Box

Name: Powerful Single 21"Subwoofer Speaker Box
Brand: Guangzhou VEMA Audio Equipment Co., Ltd.
SKU: 2128251835

Guangdong, ChinaGuangzhou VEMA Audio Equipment Co., Ltd.

US$300.00-400.00

8 Pieces

Product profile

Customization

Available

Activity

Passive

Speaker System

Subwoofer Speaker

Model NO.

KS21

Speaker Material

Wood

Application

Commercial

Certification

Factory QC

Transport Package

Flight Case or Carton Packing

Specification

762*576*602mm

Trademark

VEMA

Origin

China

HS Code

8518220000

Production Capacity

3000pieces Per Month

Key features

High Power Output: Rated power 2000W with Max SPL of 138 dB for powerful sound.

Compact Design: Compact cabinet with built-in rigging, weighing only 49 kg.

Premium Materials: Constructed with birch plywood and waterproof polyurea spray.

Wide Frequency Range: Frequency response from 30 Hz to 100 Hz for deep bass.

Versatile Application: Ideal for small to large commercial events and venues.

Durable Construction: Equipped with 4 handles and high-quality hardware for transport.

Quality Certification: All products undergo strict Factory QC inspection.

Neodymium Driver: Loaded with a high-efficiency neodymium woofer.

Company profile

Guangzhou VEMA Audio Equipment Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2015-06-02Nearest Port: HuangpuAverage Response Time: ≤18hTerms of Payment: T/T, PayPal, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW

AI-Powered supplier vetting

SummaryThe supplier is a limited company with a combined business type, 10 employees, one production line, and products centered on professional audio equipment and accessories. It reports ISO 9000 and ISO 9001 management-system certifications, full customization capability, 6–10 years of R&D-engineer experience, and 6–10 quality-control staff. However, quality and service systems show important weaknesses: finished products are checked by packing staff, there is no quality assurance in the stated process, and no written service procedures or approved-supplier list. The supplier states that its departments operate under strict management and that it provides after-sales service, but evidence of actual service performance is limited. It exports 90% of sales and has exported for eight years, while reporting no valid import/export license, no overseas warehouse, showroom, agent, branch, or offline trade-show participation. Financial records are indicated for 2022–2024, but no assessable financial figures or results...

Supplier typeThe supplier is identified as a combined company and a limited company, with no stated affiliation to a larger corporate group. Its business scope includes audio manufacturing, sales, retail, and import/export activities, while its product scope covers speakers, line arrays, monitors, amplifiers, flight cases, cables, and related hardware.

CertificationsThe supplier reports holding ISO 9000 and ISO 9001 certifications. This is explicit evidence of certification holdings, although the slices do not provide certificate numbers, validity dates, or scope.

After-Sales capabilityThe supplier states that it operates an after-sales service department and commits to service quality, but its service capability assessment reports no written procedures or records, no approved-supplier list, and no quality assurance in quality-control processes. It also has no overseas warehouse, showroom, agent, or branch, limiting documented overseas service infrastructure.

R&D capabilityThe supplier reports full customization capability and R&D engineers with 6–10 years of total experience. These facts support product-development capability, but no specific patents, new-product records, technical achievements, or R&D output are provided.

Production capacityThe supplier states that its production department operates under management guidelines and offers audio equipment manufacturing, with one production line and 10 total employees. Its export experience is eight years and export sales account for 90%, but finished-product inspection is performed by packing staff and the quality-control process states no quality assurance, indicating a production-quality weakness.

Customization capabilityThe supplier explicitly reports full customization capability and offers a broad audio-product range, including speaker boxes, PRO audio, line arrays, monitors, amplifiers, flight cases, cables, and spare parts. This directly supports customized product development and supply for the stated product category.