Jbl Professional Control 19CST In-ceiling Speaker Transformer

Product Description

The JBL PROFESSIONAL CONTROL 19CST is an in-ceiling speaker with a built-in transformer, designed for use in distributed audio and commercial sound reinforcement systems. The integrated transformer allows operation on 70-volt or 100-volt constant-voltage audio distribution lines, which are standard in commercial and multi-zone installations. This unit ships in white to blend with standard ceiling finishes. It is typically installed by licensed audio-visual integrators, low-voltage contractors, or commercial electricians working on background music, paging, and sound masking systems.

The CONTROL 19CST is suited for commercial environments such as retail spaces, offices, hospitality venues, and institutional facilities where distributed audio over constant-voltage lines is required. Its in-ceiling form factor allows for a clean, flush-mounted installation. The included transformer eliminates the need for a separate external tap transformer, simplifying wiring and reducing component count in multi-speaker runs.

Key Features

• Built-in transformer supports 70-volt and 100-volt constant-voltage audio distribution
• In-ceiling mounting for flush, low-profile installation
• White finish for compatibility with standard ceiling surfaces
• Integrated transformer reduces external component requirements on multi-speaker circuits
• Designed for commercial background music, paging, and sound reinforcement applications

Compatibility

Designed for use in constant-voltage distributed audio systems operating on 70-volt or 100-volt lines, typical of commercial sound installations. No specific compatible amplifier models or system families were provided in the product data.

Installation Notes

Installation should be performed by a qualified low-voltage contractor or licensed electrician familiar with NEC requirements for audio distribution wiring. Verify the constant-voltage amplifier output and total wattage load across all connected speakers before wiring. De-energize the amplifier and disconnect all power before making any speaker connections. Follow the ceiling tile or drywall cutout dimensions specified in the manufacturer installation sheet to ensure proper fit and baffle seal.