Bosch LC2-PC30G6-4 Premium 30W 4" Coaxial Ceiling Loudspeaker

The Bosch LC2-PC30G6-4 is a 30-watt, 4-inch coaxial ceiling loudspeaker engineered for commercial paging, background music, and emergency voice evacuation (EVAC) systems. Packaged and priced as a pair, each unit ships with a grille, back can enclosure, tile bridge, and mounting ring — everything you need for a complete, code-ready ceiling installation without hunting down supplemental hardware. For integrators specifying distributed audio or life-safety PA systems in offices, retail environments, or public facilities, this is a complete ceiling speaker solution in a single line item.

Overview

The Bosch Communications speaker line is built around the requirements of commercial installers: consistent coverage, selectable power taps, and compliance credentials that hold up on EVAC submittals. The LC2-PC30G6-4 operates on 70V or 100V constant-voltage distributed audio systems — the standard topology for running many speakers off a single amplifier across large facilities — or can be wired direct at 8 ohms for lower-impedance zone applications. Five field-selectable power taps (30, 15, 7.5, 3.75, and 1.88 watts) let you dial in the coverage level at each speaker without rewiring the circuit, which is a real time-saver when balancing uneven room geometries on a multi-zone commercial audio system.

Key Features

• 30W Coaxial Driver, 4-Inch Cone: The 4-inch coaxial design places the high-frequency tweeter concentrically within the woofer, delivering more uniform dispersion than a single-cone driver. In practice, this matters in rooms where listeners are off-axis — corridors, open offices, retail floors — where a purely directional driver would create audible hot and dead zones.
• Five Selectable Power Taps (30W down to 1.88W): Tap selection on a 70V/100V system determines how loud each speaker plays relative to others on the same circuit. Having five steps — 30, 15, 7.5, 3.75, and 1.88 watts — gives you fine-grained control when balancing a system with mixed room sizes. Smaller ancillary spaces can be tapped at 1.88W while a main lobby runs at 15W or 30W, all on the same amplifier output without additional attenuators.
• 70V / 100V and 8-Ohm Dual Operation: Compatibility with both constant-voltage distributed systems and direct 8-ohm wiring means you're not locked into a single topology. If part of your design uses a low-impedance zone amp for a boardroom or AV-integrated space, the same speaker can serve that application without a different SKU on the submittal.
• EVAC Compliant: Emergency voice evacuation compliance is non-negotiable in many commercial occupancies under IBC and NFPA 72. Specifying an EVAC-rated speaker from the start keeps your life-safety audio design on a single product line and simplifies the approval process — you're not substituting a non-rated background music speaker into a life-safety circuit and hoping it passes inspection.
• Complete Mounting Kit Included: The back can enclosure, tile bridge, and mounting ring are included in the package. The back can provides a defined acoustic volume behind the driver (critical for consistent bass response in open-ceiling plenum installations), and the tile bridge spans standard suspended ceiling grid without requiring additional support brackets. For a typical grid-ceiling deployment, this is a self-contained rough-in and trim kit.
• Sold as a Pair: Pricing and packaging are per pair, which aligns with how most ceiling speaker deployments are actually spec'd and quoted — stereo zones, symmetric coverage pairs, or matched installations in conference rooms. It simplifies PO line items and receiving for projects where symmetrical placement is the design intent.
• Bosch Communications Pedigree: The LC2 series sits within Bosch's professional loudspeaker portfolio (LC2-PC30G6-4, sometimes searched as LC2 PC30G6 4), which is engineered to integrate with Bosch PRAESIDEO, PRAESENSA, and Plena PA and EVAC systems — relevant if the broader facility is standardized on Bosch life-safety infrastructure.

Integration and Compatibility

The LC2-PC30G6-4 is designed for distributed 70V/100V constant-voltage PA systems, which are the backbone of paging and background music in most commercial buildings. It connects to any amplifier or controller with a 70V or 100V output — including Bosch Plena, PRAESENSA, and PRAESIDEO platforms — and is equally compatible with third-party amplifiers meeting those voltage standards. For 8-ohm wiring scenarios, it plugs into standard low-impedance zone amplifiers used in AV integration. The EVAC certification makes it a valid component in emergency notification systems subject to code review, though integrators should verify the full system (amplifier, controller, cabling) meets the applicable local code requirements for life-safety audio. The included back can and tile bridge are designed for standard suspended T-bar ceiling grids; confirm rough-in depth clearance above the ceiling plane before ordering for tight plenum spaces.

What's in the Box

• 2× LC2-PC30G6-4 Premium Ceiling Loudspeaker (pair)
• 2× Grille
• 2× Back can enclosure
• 2× Tile bridge
• 2× Mounting ring

Frequently Asked Questions

Q: Is the LC2-PC30G6-4 sold individually or as a pair?

A: The LC2-PC30G6-4 is packaged and priced as a pair. Each order includes two complete speaker assemblies, each with a grille, back can enclosure, tile bridge, and mounting ring.

Q: What voltage systems does the LC2-PC30G6-4 support?

A: It supports both 70V and 100V constant-voltage distributed audio systems, as well as direct 8-ohm low-impedance wiring. This makes it compatible with a wide range of commercial amplifiers and PA system controllers.

Q: What power taps are available on the LC2-PC30G6-4?

A: Five taps are available: 30, 15, 7.5, 3.75, and 1.88 watts. These allow you to set the output level of each individual speaker when running on a 70V or 100V distributed system, which is essential for balancing multi-room or multi-zone installations.

Q: Is the LC2-PC30G6-4 EVAC compliant?

A: Yes, the LC2-PC30G6-4 is EVAC (Emergency Voice Evacuation) compliant, making it suitable for use in life-safety PA systems subject to NFPA 72 and IBC requirements. Verify that all other system components (amplifier, controller, wiring) also meet the applicable code for your jurisdiction.

Q: Does the LC2-PC30G6-4 include the back can and mounting hardware?

A: Yes. Each speaker in the pair ships with a grille, back can enclosure, tile bridge, and mounting ring. The back can is critical for consistent acoustic performance in open plenum ceilings and is not a separate purchase.

Q: What ceiling type is the LC2-PC30G6-4 designed for?

A: The included tile bridge and mounting ring are designed for standard suspended T-bar ceiling grid installations. For other ceiling types (drywall, concrete), confirm mounting compatibility with the hardware included or source appropriate supplemental brackets.

Marty Allison

The LC2-PC30G6-4 is one of those speaker SKUs that actually makes a project manager's life easier — it shows up with the grille, back can, tile bridge, and mounting ring already in the box, the EVAC credential is on the data sheet, and the five power taps mean you're not calling the electrical contractor back to swap attenuators after balancing. The 30W maximum tap gives you headroom for larger open areas, while the 1.88W bottom tap lets you pull the same speaker into a small break room without a separate attenuator in line.

Technical Highlights:

• Five Power Taps (30–1.88W): Granular tap selection is what separates a well-balanced distributed system from one with uneven intelligibility. Having five steps down to 1.88W means you can match output to room size across a diverse floor plan without secondary attenuators adding cost and failure points.
• Dual Voltage + 8Ω Operation: 70V/100V compatibility covers nearly every commercial distributed audio amplifier on the market; the 8-ohm option means you can drop this same speaker into a low-impedance AV zone without a transformer or a different SKU — useful when a boardroom on the same floor uses a different amp topology.
• EVAC Compliance: On projects where the AHJ requires life-safety audio certification, having a speaker that already carries the EVAC credential removes a common submittal rejection point. The back can enclosure (included) is part of what makes the system certifiable — an open-back driver in a plenum rarely passes EVAC review.

Deployment Considerations:

• The pair packaging means your per-location cost accounting needs to divide the line-item price by two — straightforward, but easy to miss on a quick estimate if you're pricing by individual speaker location count.
• Plenum depth is the most common gotcha on T-bar grid installs: confirm you have adequate clearance above the ceiling tile for the back can before rough-in, particularly in older buildings with compressed plenum runs.

The LC2-PC30G6-4 is the right spec for mid-size commercial occupancies — corporate office floors, retail chains, school corridors — where a single speaker model needs to cover both routine paging and satisfy the life-safety inspector on the same project without a separate EVAC speaker line item.