Sumico SCL1865 is a high-performance Passive Column Array system combining a column speaker utilizing line array technology with six 5-inch woofers and one 1-inch tweeter, paired with an 18-inch subwoofer.
The detachable modular structure provides convenient mobility and flexible system expansion with additional modules.
As a passive system, it uses an external power amplifier and standalone DSP, allowing easy customization and system optimization according to specific acoustic environments.
The combination of a column line array speaker and a subwoofer delivers uniform sound coverage.
High performance with energetic and powerful sound output.
Easy integration with other professional audio equipment.
Suitable for various applications: auditoriums, teaching environments, presentations, choirs, restaurants, live music performances, event organization, and portable sound systems.
With a design philosophy focused on flexibility, high performance, and operational stability, the Sumico SCL1865 is one of the ideal solutions for modern professional sound systems.
Today’s professional audio systems require not only power but also flexibility, space optimization, and high efficiency. The Sumico SCL1865, featuring a passive modular structure, is an ideal solution to meet these demands. With a compact dual-module configuration that delivers powerful performance, the Sumico SCL1865 provides a high-quality full-range audio experience, tailored for live music stages, mobile events, conference centers, wedding venues, large auditoriums, and lecture halls.
The Sumico SCL1865 is constructed from two separate speaker modules working in optimal integration: the passive column line array Sumico CLA651 mounted vertically via a sturdy metal pole onto the 18-inch passive subwoofer module Sumico SP18 equipped with wheels for mobility. This design reduces floor space usage while enhancing sound coverage and maintaining flexibility for real-world deployment in auditoriums, banquet halls, conference venues, and live music stages. It is a reliable choice for educational institutions, event organizers, rental companies, and long-term audio system investors.
Instead of using two 15-inch woofers in a conventional full-range cabinet—where uniform sound coverage is limited and sound pressure level and clarity decrease rapidly over distance—the Sumico CLA651 column speaker is configured with six 5.2-inch woofers in an array structure, offering superior performance advantages.
The six 5.2-inch (132mm) woofers feature lightweight rigid composite fiber cones for fast transient response and precise control. Arranged vertically in a sequential line array configuration, they create a directional coupling effect that produces consistent sound pressure and delivers a thick, clean, and articulate midrange. This 5.2-inch woofer system is combined with a 1-inch (25.4mm) dome tweeter utilizing a newly engineered aluminum diaphragm to enhance high-frequency reproduction with extended range, rich detail, smooth response without harshness, and improved sound directivity within a frequency response of 100Hz – 20kHz, handling power up to 320W (RMS).
The Sumico CLA651 is designed as a high-efficiency slim column speaker with dimensions of 1140mm (H) x 200mm (W) x 250mm (D). It features recessed side handles and rear mounting points, allowing users to install wall brackets, mount vertically on top of a subwoofer, or stack in low-profile configurations with flexible adjustment of the coverage angle. The enclosure is constructed from premium MDF with a textured, moisture-resistant, scratch-resistant finish, and the protective grille is made of rust-resistant powder-coated alloy for enhanced long-term durability.
The Sumico SP18 passive subwoofer plays a crucial role in controlling the entire low-frequency energy of the system. The Sumico SP18 has dimensions of 700mm (H) x 500mm (W) x 650mm (D) and is equipped with wheels for convenient mobility. The enclosure is constructed from premium MDF with a textured, moisture-resistant, scratch-resistant finish, and the protective grille is made of rust-resistant powder-coated alloy for enhanced long-term durability. This subwoofer features an 18-inch (457mm) multi-layer composite fiber cone woofer, a large high-temperature-resistant voice coil, and a powerful large ferrite magnet. The bass reflex enclosure design of the Sumico SP18 is acoustically optimized in terms of internal volume and port tuning, allowing the system to achieve high sensitivity in the low-frequency range while maintaining excellent control. This enhances bass reproduction efficiency without requiring excessive amplifier power consumption.
The Sumico SP18 passive subwoofer delivers power up to 750W (RMS) with a frequency response range of 25Hz – 250Hz, ensuring a solid, tight, and deep bass foundation for the entire system. The Sumico SP18 provides uniform low-frequency coverage over a wide area, even when operating in open spaces or densely populated environments.
The dual passive module configuration of the Sumico SCL1865 system allows users to easily integrate it with various power amplifiers or DSP systems according to specific requirements. The system operates in passive mode, requiring an external amplifier configuration with an electronic crossover (active crossover or DSP) to divide the signal between the full-range column Sumico CLA651 and the subwoofer Sumico SP18. This enables flexible adjustment of gain, EQ, limiter, and delay to suit different acoustic environments.
When combining the Sumico CLA651 column line array speaker with the Sumico SP18 subwoofer, the Sumico SCL1865 passive system delivers a balanced and seamless full-range audio experience from deep bass to clear, bright highs. Thanks to its optimally tuned modular structure, the two speaker modules operate harmoniously, avoiding frequency overlap or loss within the audio spectrum.
When matched with an appropriate power amplifier and optimized DSP configuration, the Sumico SCL1865 passive column array system delivers deep, expansive, and powerful bass without overpowering the midrange and high frequencies. The midrange remains clear and articulate, making it highly suitable for live vocal performances, conferences, presentations, and teaching applications. The high frequencies are clean and smooth without harshness, ideal for detail-rich music genres such as jazz and acoustic.
The clear functional division between the full-range column and the subwoofer allows users to easily optimize system performance for specific environments, from reverberant auditoriums to open outdoor stages. Users can expand into a stereo configuration by combining two Sumico SCL1865 systems to increase output power and sound coverage for stages and auditoriums ranging from 100m² to 300m², or deploy additional units for larger venues.
The Sumico SCL1865 is a valuable choice in the professional passive speaker segment. Its intelligent modular design and high-performance speaker architecture enable stable operation across various acoustic environments.
| Model: Sub 18 passive | |
| Woofer Size | 18” (457 mm) |
| Power | 750W |
| Frequency Response | 25Hz – 250Hz |
| Sensitive | 93db |
| Dimensions (W×D×H) | 500 x 650 x 700mm |
| Weight | 43 Kg |
| Model: CLA651 | |
| Woofer Size | 6 x 5.2" (132 mm) |
| Treble Size | 1 x 1" (25.4 mm) |
| Power | 320W |
| Frequency Response | 100Hz – 20kHz |
| Sensitive | 90db |
| Dimensions (W×D×H) | 200 x 250 x 1140mm |
| Weight | 19.5 Kg |
