What certifications does the product have?

The product is certified with CE, RoHS, and CCC.

What is the lead time for production?

The lead time is within 15 workdays for both peak and off-peak seasons.

What is the net weight of the unit?

The net weight is 51kg per piece.

21 Inch Subwoofer Bass Speaker Box

Name: 21 Inch Subwoofer Bass Speaker Box
Brand: DONGGUAN FDB AUDIO MANUFACTURE CO .,LTD
SKU: 812392745

Guangdong, ChinaDONGGUAN FDB AUDIO MANUFACTURE CO .,LTD

US$1.00-3,000.00

1 Piece

Product profile

Customization

Available

Amplification Type

Passive

Speaker Material

Plywood

Model NO.

U121B

Usage

Stage/DJ, Multi-Purpose Hall, Moving Performance, Clubs

Structure

Two-Way Loudspeaker System

Function

Stage Loudspeaker

Frequency Response(-3dB)

35Hz-300kHz

Woofer

1×21"(530mm)/5"Voice Coil Lf

Rated Power

1000W RMS, 4000W Peak

Sensitivity

100dB 1 Watt/1 Meter

Impedance

4 Ohms Nominal

Maximum Spl

130dB Continuous, 136dB Peak

Certificate

Ce, RoHS, CCC

Net Weight

51kg/PC

Transport Package

Carton Box

Specification

790mmx890mmx695mm

Trademark

FDB

Origin

Dongguan, China

HS Code

8518220000

Production Capacity

5000PCS/Month

Key features

High Power Handling: 1000W RMS and 4000W Peak power for robust performance.

Deep Bass Frequency: Frequency response extends down to 35Hz for sub-bass reinforcement.

Durable Plywood Build: Constructed with high-quality plywood for structural integrity.

High SPL Output: Delivers up to 136dB peak sound pressure level.

OEM & ODM Support: Customization services available for branding and design.

Professional Certifications: Certified with CE, RoHS, and CCC standards for safety.

Versatile Applications: Ideal for clubs, stage monitors, hotels, and live sound.

Compact Vented Design: Efficient vented enclosure for enhanced low-frequency output.

Company profile

DONGGUAN FDB AUDIO MANUFACTURE CO .,LTD

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, Small-amount payment CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR, EXW

AI-Powered supplier vetting

SummaryThe supplier is a China-based professional audio manufacturer with operations in Dongguan, Guangdong, and reported establishment dates of 2006 and 2010 in different records. Its stated product scope includes professional transducers, speaker cabinets, amplifiers, processors, horns, and related accessories. Evidence indicates a 7,500 m² manufacturing plant, 98 employees, advanced production and testing equipment, 10 R&D engineers, and ISO9001:2015 and ISO14001:2015 certifications. The company reports cooperation with BOSE, Thoman, and Proel in developing models, as well as positive customer feedback regarding quality stability, reliability, and consistency. However, the records contain inconsistent legal/company names and entity classifications, and provide insufficient evidence regarding after-sales processes, financial credibility, and formal customization services.

Supplier typeThe records identify the supplier as a manufacturing-oriented company in the professional audio sector, with a Dongguan manufacturing address, a 7,500 m² plant, and products including transducers, cabinets, amplifiers, and processors. However, one record classifies the company as a trade company, while another identifies a limited manufacturing company, so the exact legal and operating classification is inconsistent.

CertificationsThe supplier explicitly reports ISO9001:2015 and ISO14001:2015 certifications, and also describes a formally enforced quality management system. This provides direct evidence of certified quality and environmental management systems.

R&D capabilityThe supplier reports dedicated R&D activity, 10 R&D engineers, advanced technology and testing equipment, development cooperation with materials and accessories manufacturers, and joint model development with BOSE, Thoman, and Proel. These details directly support meaningful product-development capability.

Production capacityEvidence supports in-house manufacturing of professional audio products, including a 7,500 m² plant, 98 employees, advanced production equipment, testing apparatus, and a broad product range. The supplier also describes established quality-control processes, indicating a substantive production operation.

Client casesThe supplier explicitly states that it cooperated with BOSE, Thoman, and Proel on new-model development, and reports positive feedback from local and overseas customers regarding stable quality, reliability, and consistency. These are direct customer-related references, although the records do not provide project details, dates, or independently verified case documentation.