JBL 8-inch Commercial Ceiling Speaker CSS8008

Engineered for stores, restaurants, offices and schools, this JBL Professional round ceiling speaker pairs high sensitivity with a paintable, low-profile grille and an optional back-can for easier installation. The CSS8008 is tuned to deliver clear midrange and extended bass from an 8" driver while offering multi-tap transformer compatibility for 100V, 70V and 25V distributed audio lines.

How loud and efficient is this speaker for background music or paging?

The CSS8008 features a very high 96 dB sensitivity, so it produces substantial output with minimal amplifier power—useful when many ceiling speakers share one amplifier. Continuous power handling is rated at 15 watts, and the included transformer provides multiple tap options for flexible distributed-line volume control.

• 96 dB sensitivity for strong output at low tap settings
• Continuous power handling: 15 watts
• 5-watt multi-tap transformer for precise level matching
• Compatible taps for 100V, 70V and 25V systems

What are the installation and mechanical details I should know?

The speaker ships as a preassembled driver, transformer and grille to speed installation, and the grille is paintable to match interiors. Bolt mounting uses an 11¼-inch diameter pattern to mate with standard back-cans, and the cutout diameter for the open-back unit is 8.5 inches.

• Pre-assembled driver, transformer and grille for quick installs
• Bolt mounting: 4 points on 11.25" diameter (hardware included)
• Cutout diameter (open-back): 8.5 inches
• Paintable zinc-plated steel grille for discreet, color-matched finishes

How does bass performance and frequency response compare with or without a back can?

The CSS8008’s driver provides useful bass extension from 55 Hz to 16 kHz when used without enclosure, delivering punchier low end than many comparable 8" ceiling speakers. Installing the optional CSS-BB8 back-can raises the low-frequency limit to 100 Hz, which can tighten bass and simplify in-ceiling wiring and inspection.

• Open-driver frequency range: 55 Hz–16 kHz (driver/grille assembly)
• With CSS-BB8 installed: 100 Hz–16 kHz for controlled low-frequency response
• Optional back-cans available (CSS-BB8, MTC-81BB8, MTC-200BB6, MTC-300BB8)
• Larger back-cans offer deeper bass extension when space allows

What protection and durability features are built in?

The voice coil uses a 1-inch Kapton coil-former and high-temperature wire for improved heat handling and long-term reliability in commercial duty cycles. The grille is zinc-plated and cold-rolled steel with a powder-coated finish, so it resists corrosion and accepts paint for a clean, long-lasting installation.

• 1" voice coil with Kapton coil-former and high-temp wire
• Zinc-plated, cold-rolled steel grille — paintable and durable
• Transformer and grille pre-attached for fewer field steps
• Product sourced from authorized JBL Professional North American dealer with warranty

Who is this for? The JBL CSS8008 suits AV integrators, facility managers and business owners who need dependable ceiling loudspeakers for paging and background music in commercial environments. It’s ideal where high sensitivity, simple transformer tap selection and a discreet, paintable finish are priorities, and it pairs well with optional back-cans for installations that require pre-wiring and controlled bass.