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ContinuePA Amplifiers — Public Address Systems in Tbilisi
PA Amplifiers (Public Address Amplifiers / Commercial Audio Amplifiers) are professional audio amplifiers designed for commercial sound systems and provide management of background music, voice announcements, and public address systems, ideal for shopping malls, hotels, schools, hospitals, offices, restaurants, and any type of commercial facility in Tbilisi and throughout Georgia. These amplifiers provide 100V/70V constant voltage systems (allow connecting 20-100+ speakers to one amplifier, long cable 500m+), multiple input management (microphones, music players, telephone, PC), priority function (microphone automatically reduces music for voice announcements), zone control (2-8 independent zones, separate volume on each), reliable construction (24/7 operation, 10-20 year lifespan), and professional functions (DSP, EQ, limiter, delay, network control), making them ideal for shopping malls (background music, voice advertising, evacuation announcements), hotels (multi-zone systems, lobby/restaurant/bar/rooms), schools (classrooms, corridors, voice announcements, bell), hospitals (voice announcements, zone control, emergency situations), offices (background music, voice announcements, conference halls), and restaurants (music, microphone, zone control). LAGI offers a complete range of PA amplifiers: mixer amplifiers (60W-650W, integrated mixer + amplifier, 4-12 inputs, priority function), digital amplifiers (120W-1000W, Class D, 85-95% energy efficiency, DSP functions), power amplifiers (350W-2000W, high power, large facilities), multi-zone amplifiers (2-8 zones, independent volume), network amplifiers (Dante, AES67, IP control). All amplifiers are compatible with 100V/70V PA systems.
Main Types of PA Amplifiers
- Mixer amplifiers — integrated all-in-one solution (mixer + amplifier), 60W-650W, 4-12 inputs (microphones, line inputs), priority function, USB/SD/Bluetooth player, ideal for small-medium facilities (stores, schools, restaurants).
- Digital amplifiers — Class D technology, 120W-1000W, 85-95% energy efficiency, minimal heat, compact size, DSP functions (EQ, limiter, delay), ideal for 24/7 operation, energy efficiency critical (shopping malls, hotels).
- Power amplifiers — Class AB or Class D, 350W-2000W, high power, 40-200+ speakers, ideal for large facilities (shopping malls, airports, stadiums, hospitals).
- Multi-zone amplifiers — 2-8 independent zones, separate volume/EQ/source on each zone, ideal for hotels, shopping malls, restaurants where different sound needed in different zones.
- Network amplifiers — Dante/AES67 audio-over-IP, IP control (web interface, RS-232, RS-485), real-time monitoring, centralized control, ideal for large facilities, system integration, centralized management.
- Pre-amplifiers — pre-amplification of microphone and line signals, phantom power +48V, EQ, limiter, used with power amplifiers, ideal for professional systems.
Frequently Asked Questions
100V/70V constant voltage (also known as high impedance, distributed audio) is a special audio system designed for commercial PA systems. How it works: 1) amplifier — outputs 100V or 70V signal (instead of regular 8Ω low impedance signal). 2) speakers — each speaker has built-in step-down transformer converting 100V signal to speaker voltage, and tap selector (3W/6W/10W/20W) allowing power selection. 3) connection — all speakers connect in parallel (+ and -), very simple installation. Advantages: 1) many speakers — one amplifier can power 20-100+ speakers (vs 2-8 speakers in 8Ω systems). 2) long cable — 100V systems handle 500m+ cable with minimal signal loss (vs <30m in 8Ω systems). 3) simple installation — parallel connection, doesn't require impedance matching. 4) less cable cost — can use thin cable (1.5mm²-2.5mm²). 5) flexibility — can easily add/remove speakers. Recommendation: 100V/70V systems are standard for all commercial PA systems (stores, schools, hotels, offices). 8Ω systems used only in Hi-Fi systems, home theaters.
Choosing a PA amplifier depends on facility size, speaker quantity, and usage purpose. Criteria: 1) power — calculate total speaker power and add 30% reserve. Formula: (speaker quantity × power) × 1.3. Example: 30 speakers × 10W = 300W → choose 350W-500W amplifier. 2) type — mixer (small-medium facilities, all-in-one, priority function), digital (24/7 operation, energy efficiency), power (large facilities, high power), multi-zone (different zones). 3) inputs — how many microphones and line inputs needed? Mixer amplifiers: 4-12 inputs. Power amplifiers: 1-2 inputs (require pre-amplifier). 4) functions — priority (for voice announcements), zone control (for multi-zone systems), DSP (for challenging acoustics), network control (for large facilities). 5) budget — mixer amplifiers most economical (all-in-one), digital more expensive but economical on electricity, network amplifiers most expensive (professional). Recommendation: small-medium facilities → mixer amplifier. Large facilities 24/7 → digital amplifier. Very large facilities → network amplifier.
PA amplifiers — designed for commercial sound, 100V/70V constant voltage systems, 20-100+ speakers per amplifier, long cable 500m+, priority function (microphone reduces music), zone control (multi-zone systems), 24/7 operation, reliable construction (10-20 year lifespan), rack mount design (19" rack), ideal for commercial facilities (stores, schools, hotels, offices), background music + voice announcements. Hi-Fi amplifiers — designed for homes, 8Ω low impedance systems, 2-8 speakers per amplifier, short cable <30m, no priority or zone control, better sound quality (THD 0.001-0.01%), home use (not 24/7), desktop or shelf design, ideal for homes, home theaters, studios, critical listening. Recommendation: PA — commercial facilities, background music, voice announcements. Hi-Fi — homes, music listening, home theater.