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Mt21A Built-in DSP Single 21 Self-Powered Subwoofer with Compact Cabinet Box
US$300.00-800.00
1 Piece
Product profile
Customization
AvailableNoise
<102dBHi-Fi
Hi-FiModel NO.
MT21AActivity
PassiveOperation Mode
Wire / Remote ControlSpeaker System
Optional CombinationSpeaker Material
WoodApplication
CommercialCertification
CE, RoHS, CCC, FCCMonitor
VFD ScreenTHD
<0.005%RMS
1200 WattsEnclosure Material
18mm High Quality PlywoodTransport Package
Durable Cartons or Flight CaseSpecification
CETrademark
Sanway S8028Origin
Made in ChinaHS Code
8518220000Production Capacity
600PCS/MonthKey features
21 Inch Neodymium Woofer: Features a high-power 21-inch neodymium driver with a 126mm voice coil for deep bass.
Built-in DSP Amplifier: Includes Sanway Audio customized module with Mute, EQ, Delay, and Limiter functions.
High Output Capability: Delivers 1200 Watts RMS power with a maximum SPL of 132 dB.
Compact Birch Cabinet: Constructed from 18mm birch plywood with a durable black polyurethane finish.
Wide Frequency Response: Operates efficiently from 24 Hz to 90 Hz for extended low-frequency performance.
Multiple Certification: Complies with CE, RoHS, CCC, and FCC safety and environmental standards.
Versatile Applications: Ideal for cinemas, theme parks, churches, theaters, clubs, and outdoor festivals.
OEM and ODM Services: Manufacturer offers custom branding and design services for professional audio.
Company profile

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: ≤10.51h 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.
Product Q&A
Q:What is the power rating of the MT21A?
A:
The powered version features a 1200 Watts RMS power rating with a maximum SPL of 132 dB.
Q:What are the dimensions of the subwoofer?
A:
The dimensions are 620mm (L) x 780mm (W) x 760mm (H), with a net weight of 62 kg or 66 kg for the powered version.
Q:Does the MT21A come with a passive version?
A:
Yes, the passive version (MT21S) is available as an optional configuration.
Q:What functions are included in the built-in DSP?
A:
The DSP module includes Mute, polarity control, Gain, Delay, EQ, X-over, and Limiter functions.
Q:What materials are used for the enclosure?
A:
The cabinet is made from 18mm high-quality birch plywood with a black catalyzed polyurethane paint finish.
Send Inquiry
*To:
Sanway Audio Equipment Co., Ltd.
Sanway Audio Equipment Co., Ltd.*Content:
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