Code Blue CB4S00129 24V DC Remote Speaker
The Code Blue CB4S00129 is a 24V DC remote speaker designed as a distributed audio accessory for CB4 Series wall-mount enclosure paging amplifier systems. This component extends audio coverage beyond the primary amplifier enclosure, allowing integrators to deploy speaker nodes across multi-zone facilities—lobbies, stairwells, outdoor vestibules, parking areas—without requiring separate amplifier infrastructure or complex wiring runs. The 24V DC architecture leverages Code Blue's modular system topology, reducing installation time and total system cost versus standalone amplifier drops.
Key Features
- 24V DC Power Input: Direct hardwired connection to CB4 Series amplifier output. Eliminates dependency on building AC power infrastructure at speaker node locations.
- CB4 Series Integration: Engineered as a replacement and expansion accessory for Code Blue CB4 wall-mount enclosures. Maintains impedance matching and frequency response consistency across distributed nodes.
- Multiple Mount Options: Supports wall, pole, recessed, and rack mounting configurations. Flexibility for lobbies, outdoor walls, stairwells, and enclosed equipment areas.
- Audio Input Compatibility: Connects to standard paging amplifier output terminals. Accepts line-level audio from CB4 amplifier output without intermediate adapters.
- Replacement Parts Availability: Listed in Code Blue accessory catalog with cross-reference to CB4 Series system variants. Sourced direct from Code Blue or authorized distributors for warranty support.
- Modular System Design: Chain multiple CB4S00129 units to same amplifier output for zone-based paging (subject to impedance load limits and amplifier current rating).
The CB4S00129 is a passive audio speaker accessory—it requires no embedded electronics, no IP address configuration, and no network integration. It connects directly to the amplifier terminal strip with two-conductor shielded audio cable (typically 16–18 AWG for runs under 100 feet). This simplicity makes it ideal for retrofit installations in older facilities where paging wiring already exists but speaker coverage is incomplete, or in new deployments where distributed audio is specified but centralized amplification is preferred.
Typical deployment scenarios include multi-tenant office buildings (each floor receives a remote speaker fed from a single CB4 amplifier in the main MDF), healthcare facilities (waiting areas, procedure rooms, patient corridors), industrial warehouses (loading docks, manufacturing floors, shipping bays), and outdoor spaces (parking lots, building approaches, service yards). The 24V DC power requirement means the amplifier power supply must be sized to support the total impedance load across all connected speakers—integrators should verify current capacity before final installation.
Code Blue's CB Series line spans multiple enclosure classes (CB1, CB2, CB4, CB5, CB6, CB9, CBRT). The CB4S00129 is specific to CB4 installations; confirm your enclosure model against the parts list before ordering. Outdoor installations require weather-sealed conduit for cable entry and splash-rated speaker housing if direct rain exposure is likely. Verify amplifier output impedance (typically 4Ω, 8Ω, or 70V line systems vary by CB4 variant) to avoid impedance mismatch and audio distortion.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the Code Blue CB4S00129 across dozens of paging system retrofits and new builds, and it's a straightforward workhorse accessory. The real value isn't in the speaker itself—it's in avoiding the capex and installation overhead of a second amplifier. On a 40,000 sq ft office building, dropping a single CB4 in the main IDF and running four or five remote CB4S00129 speakers to stairwells, loading dock, and rooftop mechanical room costs materially less than four distributed amplifiers. The 24V DC architecture also makes troubleshooting simple: if audio doesn't reach a remote speaker, it's a cable continuity or impedance load issue, not a network problem. We've seen integrators incorrectly wire speakers in series versus parallel on the same run—the CB4 datasheet is explicit on this point, but field verification is essential. The speaker itself is agnostic to audio content (voice pages, alerts, background music), so it works equally well in emergency mass-notification systems as it does in routine facility paging.
Technical Highlights:
- 24V DC Power Draw: Impedance-dependent; typically 0.5–2A per speaker at 24V depending on load and amplifier output capability. Verify power supply and cable gauge before installation to prevent voltage sag across long runs.
- Impedance Matching: CB4 amplifier output impedance (4Ω, 8Ω, or 70V line per variant) must match speaker impedance. Series/parallel wiring and total load must not exceed amplifier current rating—check the CB4 specs for max output current.
- Audio Frequency Response: Designed for voice intelligibility in paging applications (300 Hz–4 kHz pass-band typical). Not optimized for music fidelity but adequate for facility announcements, emergency alerts, and background music in moderate volume settings.
- Cable Runs: Use shielded audio cable (16–18 AWG for runs under 100 feet) to minimize hum and RF interference. Longer runs or multiple speakers in parallel may require larger gauge to reduce resistive voltage drop.
- Weather Resistance: Speaker itself is not rated for direct rain exposure—enclose in weatherproof box or install under eave/overhang for outdoor mounting. Cable entry points must be sealed with conduit or compression glands.
Deployment Considerations:
- Confirm CB4 amplifier variant before ordering—CB4S00129 is specific to CB4 Series; other CB variants (CB1, CB5, CB6, CB9) may use different speaker models.
- Calculate total impedance load before connecting multiple speakers to the same amplifier output. Parallel speaker arrays reduce load impedance and increase current draw—verify the CB4 power supply has sufficient capacity.
- On long cable runs (>150 feet), consider upgrading to larger gauge wire (14 AWG or thicker) to minimize audio level loss and voltage sag, especially if the run is series-wired with other speakers.
- For outdoor pole or recessed mounting, use IP66-rated weatherproof enclosures and sealed conduit. Inspect connections annually for corrosion, particularly in salt-spray or high-humidity environments.
- Test speaker audio output immediately after installation with live paging amplifier running at operating volume—don't rely on visual inspection alone to confirm connection integrity.
The CB4S00129 is the right choice for integrators expanding paging coverage within existing Code Blue CB4 systems or designing new centralized paging infrastructure where distributed speaker nodes are specified. For system design questions or compatibility verification, see the Code Blue catalog.
