JBL CSS-1S/T 5.25" 2-Way 10W Passive Loudspeaker (Pair)

Overview

The JBL CSS-1S/T is a pair of passive loudspeakers designed to deliver clear and balanced sound for indoor environments such as classrooms, retail shops, and cafés. Each speaker combines a 5.25-inch woofer with a 0.75-inch dome tweeter to produce audio that makes voices easy to understand and music sound full without distortion. With a maximum sound pressure level of 106 dB and a frequency response from 85 Hz to 18 kHz, these speakers provide ample volume and clarity for medium-sized rooms.

They feature a built-in 10-watt multi-tap transformer that supports 70V, 100V distributed audio systems, or an 8-ohm direct connection, offering flexibility depending on your amplifier setup. Installation is made simple with included wall-mount brackets, and the durable polypropylene enclosure allows for stable shelf placement as well.

Key features

• Two-way design with a 5.25-inch woofer and 0.75-inch dome tweeter for balanced sound reproduction
• Supports up to 60 watts of continuous power, providing sufficient loudness for most medium-sized spaces
• Wide 120-degree by 120-degree sound coverage ensures even audio distribution and reduces dead zones
• Built-in 10W multi-tap transformer allows easy integration with 70V, 100V, or 8-ohm amplifier systems
• Includes wall-mount brackets for flexible positioning and optimal sound placement
• Polypropylene enclosure with a flat bottom enables stable shelf or surface placement
• Push terminal input connections simplify wiring and installation
• Compact and lightweight design makes handling and setup straightforward

Key specs

• Woofer size: 5.25 inches
• Tweeter size: 0.75-inch dome
• Power handling: 60 watts continuous
• Frequency response: 85 Hz to 18 kHz
• Maximum sound pressure level: 106 dB (8-ohm mode)
• Sound coverage: 120° horizontal by 120° vertical
• Transformer taps: 10W multi-tap for 70V, 100V, or 8-ohm systems
• Enclosure material: polypropylene with flat bottom
• Dimensions (H x W x D): 9 x 6.3 x 5.6 inches
• Weight per speaker: 4.5 pounds

Connectivity and compatibility

The speakers connect via push terminal inputs, which provide a secure and straightforward wiring method. The built-in multi-tap transformer supports connection to common distributed audio systems operating at 70V or 100V, making these speakers compatible with a wide range of commercial amplifiers. Alternatively, they can be used in an 8-ohm direct mode for traditional amplifier setups, offering flexibility for different audio system configurations.

Installation and setup

Installation is designed to be user-friendly with included wall-mount brackets that allow precise positioning to optimize sound coverage. The flat-bottom enclosure also supports stable placement on shelves or other flat surfaces, giving you options depending on your space and mounting preferences. The lightweight design and compact size make handling and installation manageable even in tight or elevated locations.

Ideal uses and environments

These speakers are well suited to environments where clear speech intelligibility and background music are important, such as classrooms, retail stores, cafés, and small meeting rooms. Their balanced sound and flexible mounting options make them a strong choice for commercial or educational audio setups that require reliable performance without complex installation demands.