High Output Touring Grade Dual Eighteen Bass Reflex Cardioid Ultra Low Frequency Reinforcement Subwoofer Platform Line Array Sound System Professional Audio

• Customization: Available
• Noise: ≥105dB
• Hi-Fi: Not Hi-Fi
• Model NO.: KS28
• Activity: Passive
• Operation Mode: Wire / Remote Control
• Speaker System: Optional Combination
• Speaker Material: Wood
• Application: Commercial, Home
• Certification: CE, RoHS, CCC, FCC
• Monitor: No Display
• THD: <0.005%
• Rated Power: 1500W
• Pake Power: 3000W
• Max Spl: 143dB
• Weight: 80kg
• Transport Package: Flight Case or Cardboard Box Packaging
• Specification: 125 x139x580mm(125x 139x1160mm-Parallelin paralle)
• Trademark: DOMC or OEM
• Origin: Made in China
• HS Code: 8518210000
• Production Capacity: 10000pieces/Month
• Package Size: 140.00cm * 75.00cm * 60.00cm
• Package Gross Weight: 83.000kg

Product Description

Product Description

Product Name	KS28	Material	Wood
Rated power	1500W	Dimensions(L*W*H)	1351*719*565mm
Maximum sound pressure level	143dB	Frequency response range	26Hz-500Hz
Surface treatment	Water-based paint/Polyurea paint	Box material	Multi-layer birch planks
Country of origin	China	Customs Code	8518220000

KS28

Featuring dual 18-inch subwoofers with two long-stroke drivers, this subwoofer extends down to 26Hz and delivers a sound pressure level of up to 143dB. It boasts a cardioid polar pattern for effective low-frequency control and reduced stage interference. The cabinet is constructed from thickened birch wood with a durable coating, making it suitable for both touring and fixed installations. It can be used independently or easily integrated into various array systems, providing powerful and clear professional low frequencies.

Certification

Packaging and Transportation

Workshop Introduction

Company Profile

Weifang Dongmei Audio Co., Ltd. is a comprehensive audio-visual technology company with professional audio technology at its core. Integrating its own brand DOMC, ODM, and OEM, it focuses on providing professional, high-quality audio solutions. Through years of development, we have witnessed together with you that Weifang Dongmei Audio Co., Ltd. has become a leading comprehensive technology enterprise in the industry.
As a company with outstanding comprehensive capabilities, we not only possess professional integrated technical capabilities but also have independent R&D capabilities and have won numerous technology patents. In addition to providing professional customization and R&D services tailored to customer needs, we can also provide comprehensive support. "Creating the most beautiful sound for you."
Weifang Dongmei Audio Co., Ltd. mainly undertakes audio, lighting, and video system engineering projects for stadiums, theaters, hotels, multi-functional halls, conference rooms, lecture halls, nightclubs, KTV rooms, cinemas, exhibition halls, background music, television stations, performances, and various low-voltage integration projects. Our projects cover a wide range of fields, including national government agencies, large state-owned enterprises, stadiums, schools, star-rated hotels, and entertainment venues.
We always adhere to the philosophy of "quality first, service foremost" and continuously pursue excellence. Our team comprises experienced professionals with strong technical skills and extensive engineering experience. We will provide you with the most suitable audio-visual solution for your needs and safeguard your project.

FAQ

Q1:Its low-frequency extension reaches 26Hz, but is it really useful in actual performances?

A1: Extremely useful. 26Hz means it can fully reproduce the ultra-low frequencies in electronic music, the impact of movie sound effects, and even the natural resonance of pipe organs and large drums. This ultra-low frequency can not only be "heard," but also be perceived through the body, greatly enhancing the immersion and the impact of the live performance.

Q2:Why was Russian birch chosen as the material for the box? What are its advantages over ordinary wood?

A2: Russian birch wood is high in density and has a uniform structure, with strength far exceeding that of ordinary plywood. Its thickened treatment significantly suppresses cabinet resonance, preventing sound coloration and resulting in cleaner, more solid bass. Combined with a polyurea lacquer finish, it offers enhanced impact and moisture resistance, making it suitable for long-term touring or fixed installations.

Q3: What power amplifier is needed for a 1500W/3000W power configuration?

A3:  It is recommended to pair it with a single-channel amplifier with a rated power of 1500W–2500W (4Ω). Properly reserving power margin ensures sufficient bass dynamics and reduces distortion, while also preventing prolonged full-load operation and extending the equipment's lifespan.