Speakers - IT and Communication Equipment

Marine communication speakers are rugged loudspeakers used for vessel-wide public address, emergency announcements, general alarm, intercom, and onboard communication systems. They are selected for high intelligibility, corrosion resistance, weather protection, and compatibility with shipboard amplifiers.

ProShipWorks provides end-to-end support to source and supply Speakers for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated: October 11, 2026

Product Information

Product Name	Speakers
Product Category	IT and Communication Equipment
Product Reference	1634
Brands / Manufacturers	Bosch, TOA, Zenitel
Unit of Measure	Piece

Key Features

Key Feature
1. High speech intelligibility for announcements and alarms
2. Weather-resistant and corrosion-resistant construction
3. Horn, cabinet, ceiling, or flush-mount configurations
4. Suitable for 100 V line or low-impedance audio systems
5. Available with marine-rated enclosures and mounting hardware

Applications of Speakers

Application
1. Ship public address and general alarm systems
2. Engine-room, deck, accommodation, and machinery-space communications
3. Intercom, paging, and emergency announcement systems

Models & Manufacturers

Model	Manufacturer
LBC 3470/00	Bosch
SC-630	TOA

Technical Specifications

Model	Specification	Value	Unit
LBC 3470/00	Rated power	15	W
LBC 3470/00	Nominal impedance	Selectable transformer taps	—
SC-630	Rated input power	30	W
SC-630	System type	100 V line and low-impedance	—

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification	Applicable requirements may include IEC 60092-504 for special features of control and instrumentation equipment, IEC 60945 for relevant marine navigation and radiocommunication equipment, and IEC 60529 for ingress protection. Product-specific certification must be verified from the manufacturer.
Class Approval	Marine installation approval, where required, may involve DNV, ABS, Lloyd's Register, Bureau Veritas, or ClassNK. Approval is product- and application-specific; ordinary commercial loudspeakers should not be assumed to have type approval.

Installation, Maintenance & Safety Information

Installation Notes	Mount securely using corrosion-resistant hardware and aim horns or cabinets toward the coverage area. Match amplifier voltage, impedance, polarity, and power taps. Use marine-grade cable glands, sealed cable entries, and correctly rated cable. Follow the vessel PA and alarm system drawings.
Maintenance Tips	Inspect housings, brackets, cable glands, and terminals for corrosion, looseness, and water ingress. Keep acoustic openings clear. Test audibility and alarm-zone operation during scheduled communication-system tests. Replace damaged diaphragms, grilles, or seals.
Safety Notes	Isolate and lock out the amplifier circuit before servicing. Do not exceed speaker power or voltage ratings. Verify alarm and emergency communication functions after installation or maintenance. Use only equipment approved for the hazardous or exposed location where applicable.