What is the material used for the cabinet?

The cabinet is made from first-grade Russian birch plywood, ensuring high durability and acoustic performance.

Do you have experience in professional audio manufacturing?

Yes, we have 10 years of manufacturing experience in professional audio speakers and power amplifiers with a team of engineers having over 10 years of experience.

What is the maximum SPL for the 15-inch line array speaker?

The maximum SPL for the 15-inch line array speaker is 141 dB (W) and 144 dB (F).

15 Inch Line Array and Professional Subwoofer Speakers 21 Inch

Name: 15 Inch Line Array and Professional Subwoofer Speakers 21 Inch
Brand: Guangzhou Xinbaosheng Audio Equipment Co., Ltd.
SKU: 2323801455

Guangdong, ChinaGuangzhou Xinbaosheng Audio Equipment Co., Ltd.

US$500.00-1,000.00

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

Three Years Warranty: Comprehensive 3-year warranty for power amplifiers with engineer support for quality issues.

No Minimum Order Limit: Flexible ordering from 1 piece up to 1,000,000 pieces with no quantity restrictions.

Professional Audio Experience: 10 years of manufacturing expertise with engineers possessing over 10 years of work experience.

Premium Materials: Constructed with first-grade Russian birch plywood and coated steel grills for durability.

High Performance Drivers: Features 15-inch and 21-inch neodymium cone drivers for deep bass and clear highs.

CE and RoHS Certified: All products meet international safety and environmental standards with CE and RoHS certification.

Flexible Customization: Offers full customization, minor customization, and customization from samples or designs.

Fast Lead Time: Production completed within 15 workdays for both peak and off-peak seasons.

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: ≤4.90h

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 is the warranty period for the power amplifier?

We provide a three-year warranty for the power amplifier. If quality problems arise, please provide pictures or videos for engineers to judge and offer after-sale support.

Q:Is there a minimum order quantity?

No, there is no minimum order quantity limit. You can order as few as 1 piece or as many as 1,000,000 pieces.

Q:What certifications do your products have?

Our products are certified with CE and RoHS standards to ensure safety and environmental compliance.

Q:Can I customize the product?

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

Q:How long is the production lead time?

The average lead time is within 15 workdays, regardless of whether it is peak season or off-season.