What is the lead time for production?

The average lead time is within 15 workdays for both peak season and off-season periods.

What payment terms are accepted?

We accept LC, T/T, D/P, and PayPal as terms of payment.

Can the products be customized?

Yes, we offer full customization, customization from samples/designs, minor customization, and flexible customization options.

15 Inch Line Array and 21-Inch Subwoofers Audio System Sound Speaker

Name: 15 Inch Line Array and 21-Inch Subwoofers Audio System Sound Speaker
Brand: Guangzhou Xinbaosheng Audio Equipment Co., Ltd.
SKU: 2282299505

Guangdong, ChinaGuangzhou Xinbaosheng Audio Equipment Co., Ltd.

US$500.00-1,500.00

1 Piece

Product profile

Customization

Available

Activity

Passive

Operation Mode

Wire / Remote Control

Model NO.

KA15+KA21

Speaker System

Optional Combination

Speaker Material

Wood

Application

Commercial, Home

Certification

CE, RoHS

Max Spl

147db

Frequency Response(-3db)

35Hz-20kHz

Cabinet

First Grade Russian Birch Plywood

Speaker

Neodymium Magnet

Transport Package

Strong Wooden Frame and Carton

Specification

134x44x52cm (WxHxD)

Trademark

Sinbosen

Origin

Guangdong Province, China

HS Code

85182200

Production Capacity

1000 Units/ Month

Key features

High-Performance Drivers: 15-inch LF and 3-inch HF drivers for KA-15; 21-inch neodymium driver for KA-21 subwoofer.

Premium Cabinet Material: Constructed from first-grade Russian birch plywood for durability and acoustic neutrality.

Powerful Bass Output: KA-21 subwoofer delivers deep low-frequency extension with 1800W AES and 3600W Peak power.

Flexible Ordering Policy: No minimum order quantity limit; supports orders from 1 piece to large volumes.

Comprehensive Warranty: Three-year warranty for power amplifiers with professional engineer support for quality issues.

Professional Certification: Products hold CE and RoHS certifications, ensuring safety and compliance standards.

Expert Manufacturing: 10 years of manufacturing experience with engineers having 10+ years of professional expertise.

Company profile

High Repeat Buyers ChoiceYears of Export Experience

Guangzhou Xinbaosheng Audio Equipment Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 Years CertifiedNearest Port: Guangzhou PortAverage Response Time: ≤6.95h

AI-Powered supplier vetting

SummarySinbosen demonstrates broad customization and ODM capability, has introduced new products within the past year, and reports RoHS compliance. It offers small orders and customized samples, a stated three-year warranty, 18-hour service availability, and free after-sales support for quality or product problems. Production indicators include seven production lines, six to ten quality-control staff, inventory capability, and lead times within 15 working days in both peak and off-season periods. However, the supplier has no valid manufacturing-capacity contract with related subcontractors, no supplier management-system certification, no overseas warehouse, overseas branch or agent, showroom, or offline trade-show participation. Inspection and supplier-assessment procedures exist without records, and approved-supplier lists lack signatures or dates. Financial information is present only as year labels, so financial credibility cannot be verified. Customer-case evidence is limited: no Fortune 500 cooperation or...

Supplier typeThe supplier presents itself as a manufacturer with R&D, ODM, customization, inventory, and seven production lines. It exports mainly to Europe and North America, but has no overseas warehouse, branch, agent, showroom, or overseas-service country coverage.

CertificationsRoHS is explicitly identified as the supplier’s sustainable-development and product-compliance certification. However, supplier management-system certification is listed as NIL, so certification coverage is limited to the stated product-related standard.

After-Sales capabilityThe supplier states that it provides a three-year warranty, welcomes small orders and customized samples, offers 18-hour online service, and provides free after-sales support for quality or product problems. These are explicit service commitments, although no performance records are provided.

R&D capabilityThe supplier reports new products within the past year, ODM service, and broad design customization. It has two years of total R&D-engineer experience and no available SDK, indicating some product-development capability but limited evidence of advanced technical integration.

Production capacityProduction evidence includes seven production lines, six to ten quality-control staff, inventory capability, 30 qualified service-capability suppliers, and lead times within 15 working days in peak and off-season periods. A material control weakness is that no valid manufacturing-capacity contract exists with related subcontractors, while inspection and supplier-assessment procedures lack records.

Customization capabilityThe supplier explicitly supports customization from samples, full customization, customization from designs, minor customization, flexible customization, ODM services, and customized samples for small orders. This is direct evidence of broad customization flexibility.

Client casesThe supplier reports no OEM service for popular brands and no cooperation with Fortune 500 companies. No named customers, project examples, or verifiable case studies are provided, so customer-case strength cannot be established.

Product Q&A

Q:What are the technical specifications for the KA-15 speaker?

The KA-15 is a 2-way passive speaker with a 15-inch LF and 3-inch HF driver. Usable bandwidth is 42Hz-20kHz, Max SPL is 141dB (W)/144dB (F), and it weighs 33kg/73lb.

Q:What are the technical specifications for the KA-21 subwoofer?

The KA-21 is a passive subwoofer with a 21-inch neodymium driver. Usable bandwidth is 31Hz-100Hz, Max SPL is 138dB, AES power is 1800W, and it weighs 49kg/108lb.

Q:Is there a minimum order quantity (MOQ)?

No, there is no minimum order quantity limit. You can choose to order 1 piece or up to 1,000,000 pieces.

Q:What warranty is provided for the products?

We provide a three-year warranty for power amplifiers. If quality problems occur, engineers provide after-sale support based on pictures or videos.

Q:What certifications do the products have?

The products are certified with CE and RoHS standards, ensuring compliance with international safety and environmental regulations.