Do you offer customization services?

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

What is the warranty policy?

We provide a comprehensive warranty covering mechanical defects with free parts and labor.

Sdondz ALS400 Powerful 15-Inch Passive Subwoofer Amplifier for Deep Bass

Name: Sdondz ALS400 Powerful 15-Inch Passive Subwoofer Amplifier for Deep Bass
Brand: Jiangmen Shengdong Electronic Technology Co., Ltd
SKU: 2127373662

Guangdong, ChinaJiangmen Shengdong Electronic Technology Co., Ltd

US$191.61

2 Pieces

Sample price:US$191.61/piece.Request sample

Product profile

Customization

Available

Noise

<95dB

Hi-Fi

Model NO.

ALS400

Activity

Passive

Operation Mode

Wire / Remote Control

Speaker System

2.0 Channel

Speaker Material

Wood

Application

Commercial

THD

0.005%-0.01%

Frequency Response

43Hz-120Hz(± 5dB)

Power

500W

Model

ALS400

Power Supply

500W

Nominal Impedance

8&Omega

Sensitivity

99dB

Maximum Spl

128dB

Connect

2xnl4 Speaker

Materials

MDF

Transport Package

63X45X38cm

Specification

20KG

Trademark

SDONDZ

Origin

China

HS Code

85182200

Production Capacity

5000

Key features

Wide Frequency Response: 43Hz to 120kHz range ensures precise reproduction from deep bass to delicate treble.

High Peak Sound Pressure: Maximum SPL of 128 dB provides abundant volume even in large spaces.

High Sensitivity Efficiency: 99 dB sensitivity allows loud sound generation even with low power drive.

Robust Power Handling: 500W nominal, 1000W program, and 2000W peak capacity for dynamic sources.

Durable Cabinet Structure: MDF material with water-based paint, steel grill, and polymer protective net.

Flexible Installation Options: Features pole installation interface and M8 lifting points for various setups.

Professional Connection System: Equipped with 2 NL4 connectors supporting dual power amplifier driving mode.

Low Distortion Performance: THD of 0.005%-0.01% ensures high-fidelity audio reproduction.

Company profile

Patents AwardedExhibition ExperienceManagement CertificationStandardized Supplier Management

Jiangmen Shengdong Electronic Technology 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: 7 years CertifiedNearest Port: Guangzhou Port, Shenzhen Port, Jiangmen PortAverage Response Time: ≤7.79h

AI-Powered supplier vetting

SummaryThe supplier is described as a combined company and professional technical supplier focused on audio products, including wireless and wired microphones, conference systems, educational audio equipment, and accessories. It reports R&D capability, 3D software design services, broad customization options, written inspection procedures, manufacturing contracts with affiliated subcontractors, and inventory capacity. Its service model includes pre-sales consultation, order fulfillment, after-sales support, and technical assistance. However, the provided information confirms no overseas warehouse, showroom, agents, branches, or overseas-service countries. No certification information or customer cases are provided. Financial figures are excluded from this assessment in accordance with the privacy requirement.

Supplier typeThe supplier is explicitly identified as a professional technical supplier, while its company type is listed as combined. Its offerings cover manufacturing, export trade, service, quality control, R&D, and related capabilities, indicating a broad integrated supplier profile.

After-Sales capabilityThe supplier explicitly describes responsive after-sales service and technical assistance, and states that its audio products are backed by comprehensive after-sales support. It lacks overseas agents, branches, warehouses, showrooms, and overseas-service coverage, which limits the documented international support infrastructure.

R&D capabilityThe supplier reports continuous technological innovation, development of new products, professional R&D capability, and a commitment to intelligent, networked, and converged audio technologies. It also provides 3D software design services, supporting a positive assessment of innovation capability.

Production capacityThe supplier cites sophisticated manufacturing processes, a strict quality management system, written and consistently followed finished-product inspection instructions, valid manufacturing-capacity contracts with affiliated subcontractors, inventory capacity, and a one-month average lead time in both peak and off-season periods. These details explicitly support production and fulfillment capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, minor customization, flexible customization, and full customization. The same range is supported by its stated R&D and 3D software design capabilities, indicating extensive documented customization coverage.

Product Q&A

Q:May I buy sample from you?

Absolutely! You're welcome to experience our superior quality and service. Please note, per our company policy, sample and freight costs are the buyer's responsibility.

Q:Where is your factory?

Our factory is located in Jiangmen City, Guangdong Province.

Q:How can we get in touch with you?

If you would like to know more details and obtain the latest prices, please send me an inquiry message. I will be more than happy to assist you!

Q:How soon do we expect the delivery to be made?

The peak season lasts for one month, while the off-season lasts for one month.

Q:What is the minimum order quantity?

The minimum order quantity is 100 pieces.