Ultra-Low Frequency Speaker System

Fixed Installation / Touring Series

The CLUM Ultra-Low Frequency Series is primarily designed for fixed installations in medium to small-scale venues, broadcasting applications, and high-quality conference rooms, surround sound systems, multipurpose halls, or portable low-frequency extensions for small- to - medium-sized mobile performances. This series is primarily designed for distributed sound reinforcement systems. Optional preset digital processors and dedicated analog processors can be selected to optimize the speaker's frequency response characteristics. When paired with full- range speakers from the CLUM series, it enables the construction of high- performance small- to- medium- sized sound reinforcement systems.
Item
Specification
Frequency Range
40 Hz ~ 500 Hz ( -10dB)
Output Power
350 W@AES /700 W@Peak
Sensitivity (1W, 1m)
95 dB/SPL
Sound pressure level@1m,f>90Hz
12 0 dB/SPL(Maximum continuous sound pressure level)

126 dB/SPL (peak sound pressure level)
Input Impedance
LF: 8Ω
Transducer Configuration
LF: 1x12" low-frequency
transducer (75mm voice coil)
Enclosure Structure
The enclosure surface is coated with multiple layers of water- soluble paint and features
impact-resistant structural reinforcement.
Color
Standard color is black; other
colors are available upon
request.
Connectors
2× NL4 speaker connectors
Install suspension fittings
A set of standard backrest mounting points
Dimensions (W × D × H)
350x443x550 mm
Weight
Net: 20.5kg
Gross weight: 22kg

CLUM112B

Single 12-inch Ultra-Low Frequency Speaker

12" Low-Distortion Driver – Delivers efficient low-frequency reinforcement for small-to-medium line arrays.

Powerful Output – 350W rated / 700W peak at 8Ω, with 40–500Hz frequency response.

Durable Design – 18mm birch plywood enclosure with reinforcement, dual wooden handles, and CLUM mounting points.

The CLUM Ultra-Low Frequency Series is primarily designed for fixed installations in medium and small-scale venues, broadcasting applications, and high-quality conference rooms, surround sound systems, multipurpose halls, or portable low-frequency extensions for small - to - medium-sized mobile performances. This series is primarily designed for distributed sound reinforcement systems. Optional preset digital processors and dedicated analog processors can be selected to optimize the speaker's frequency response characteristics. When paired with full-range speakers from the CLUM series, it enables the construction of high- performance small- to- medium- sized sound reinforcement systems.
Item
Specification
Frequency Range
40 Hz ~ 500 Hz ( -10dB)
Output Power
600 W@AES / 1200 W@Peak
Sensitivity (1W, 1m)
99 dB/SPL
Sound pressure level@1m,f>90Hz
127 dB/SPL(Maximum continuous sound pressure level)

133 dB/SPL (peak sound pressure level)
Input Impedance
LF: 8Ω
Transducer Configuration
LF: 1x18" low-frequency
transducer (100mm voice coil)
Enclosure Structure
The enclosure surface is coated with multiple layers of water-soluble paint and features impact- resistant structural
reinforcement.
Color
Standard color is black; other
colors are available upon
request.
Connectors
2× NL4 speaker connectors
Install suspension fittings
A set of standard backframe
installation anchor points
Dimensions (W × D × H)
560x680x800 mm
Weight
Net: 43 kg
Gross weight: 45 kg

Single 18-inch Ultra-Low Frequency Speaker

Dual 18" Low-Distortion Drivers – Engineered for efficient, powerful low-frequency reinforcement.

Strong Output – 600W rated / 1200W peak at 8Ω, with 40–500Hz frequency response.

High SPL Performance – 127dB continuous / 133dB peak for impactful bass delivery.

Rugged Construction – 18mm birch plywood enclosure with reinforcement, dual wooden handles, and CLUM mounting points.