What are the applicable certifications?

The product holds CE, RoHS, and FCC certifications.

What is the usable frequency bandwidth?

The usable bandwidth (-10 dB) ranges from 31 Hz to 100 Hz.

What are the payment terms?

Payment terms include T/T, PayPal, and Western Union.

Ks21 21inch Rigging PRO Subwoofer Speaker Box for Concert Hall

Name: Ks21 21inch Rigging PRO Subwoofer Speaker Box for Concert Hall
Brand: Sanway Audio Equipment Co., Ltd.
SKU: 1947466435

Guangdong, ChinaSanway Audio Equipment Co., Ltd.

US$500.00-700.00

1 Piece

Product profile

Customization

Available

Noise

<95dB

Hi-Fi

Not Hi-Fi

Model NO.

KS21

Activity

Passive

Operation Mode

Wire / Remote Control

Speaker System

Optional Combination

Speaker Material

Wood

Application

Commercial

Certification

CE, RoHS, FCC

Monitor

None

THD

0.005%-0.01%

Cabinet

Russian Birch Plywood

Drivers

Voice Coil Ferrite Woofe

OEM Service

Acceptable

Transport Package

Carton or Flight Case

Specification

576x764x620 mm

Trademark

SANWAY OR OEM

Origin

Made in China

HS Code

8518220000

Production Capacity

3000PCS\Month

Key features

High Power Output: 1800W AES / 3600W Peak power with 1x21' neodymium driver.

Premium Cabinet Material: Constructed from first-grade Russian birch plywood with waterproofing.

Lightweight Design: Compact and rugged design weighs only 49 kg / 108 lb for easy handling.

Advanced Rigging System: Integrated two-point rigging allows flown or stack configurations.

Low Distortion Audio: THD 0.005%-0.01% ensures high-fidelity sound reproduction.

Custom OEM Service: OEM service is acceptable for customized cabinet and driver options.

Versatile Application: Ideal for small to large indoor or outdoor concert events.

Multi-Certification: Complies with CE, RoHS, and FCC safety standards.

Company profile

Sanway Audio Equipment Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2006-07-15 CertifiedNearest Port: Zhaoqing Port, Guangzhou port, Shenzhen PortAverage Response Time: ≤8.19h CertifiedTerms of Payment: T/T, PayPal, Western Union

AI-Powered supplier vetting

SummarySanway Audio Equipment Co., Ltd. is identified as a combined limited company and factory-based professional audio manufacturer in Guangzhou, China. Its stated product range covers power amplifiers, speakers, line-array systems, processors, and related professional audio equipment. The supplier reports five production lines, 11–20 quality-control staff, four R&D engineers, and stated annual capacities of 3,000 power amplifiers and 10,000 line-array sets. It describes quality-control procedures, trained personnel, experienced engineers, and product innovation, but no management-system certification is reported. Export activity is indicated through a 51%–70% export-sales share and markets in South America and Europe. Trade records show one buyer in Kazakhstan, although the records do not establish broader customer performance. Lead time is stated as within 15 working days in both peak and off-peak periods. Evidence is insufficient to verify financial strength, after-sales arrangements, or customization...

Supplier typeThe supplier is described as a factory specializing in research, development, manufacturing, sales, and technical services. Its registered entity is a combined limited company based in Guangzhou, China, supporting classification as a manufacturer with integrated commercial and technical functions.

CertificationsThe supplier’s certification of management systems is explicitly listed as NIL. Therefore, no management-system certification is evidenced in the provided information.

R&D capabilityThe supplier states that it conducts research and development, emphasizes quality and innovation, and employs engineers and technicians with extensive professional-audio experience. Four R&D engineers are reported, and the product range includes DSP-equipped amplifiers and digital speaker processors, providing evidence of relevant product-development capability.

Production capacityThe supplier reports factory manufacturing, a modern assembly line, strict quality control, five production lines, 11–20 quality-control staff, and annual capacities of 3,000 power amplifiers and 10,000 line-array sets. It also states a lead time within 15 working days in both peak and off-peak seasons, supporting a demonstrated production capability.