Background voiceover

Background sound system for premises: what does it consist of?

Technical solution for background sound - Public Address system — is built on 100-volt transmission lines. A 100V PA system allows you to connect dozens of speakers to a single amplifier and transmit the signal hundreds of meters without loss of quality—something impossible with home and concert stereo systems. Below, we'll discuss what such a system consists of and what to consider when choosing.

Components of background sound systems

Any background sound system consists of six components: loudspeakers create the sound field, PA amplifiers feed the zone lines, acoustic processors ensure sound quality, players deliver content, microphone consoles add service announcements, and the switching system ties it all together. A weak link in any of these six components drags down the entire system—we'll examine each component separately below.

Loudspeakers

The type of speaker is determined by the ceiling structure, room height, and acoustic conditions. The main types of PA speakers are:

The most popular option for suspended ceilings is Armstrong or plasterboard. They are unnoticeable in the interior and provide a uniform coverage from top to bottom.

They are used in restaurants, stores with open ceilings (loft style), or outdoors. They have a bracket for adjusting the angle.

Narrow vertical systems for difficult acoustic conditions (temples, train stations), where reverberation needs to be cut through.

Horn systems for open spaces, stadiums, parking lots, and large warehouses. They offer long range and speech intelligibility.

Each type has its own parameters: power, frequency response, dispersion, moisture protection, low-impedance connection, or 100V line. Incorrect choice of type and installation pitch is the main cause of uneven sound, when "loud here, inaudible there.".

Installation of ceiling and wall speakers

We install ceiling speakers in all types of ceilings: recessed into Armstrong and drywall, surface-mounted onto concrete slabs, and even suspended ceilings using flush-mounted brackets. We install wall-mounted speakers on adjustable brackets, with the angle adjusted according to the design. We install cables concealed behind the ceiling and in chases, and in finished interiors, in cable channels matching the finish. Nighttime installation is also possible to avoid disruption to business operations.

Gain

Power amplifiers are selected with a reserve of 20-30% from the total power of all speakers. For facilities with multiple zones (fitness centers: locker rooms, cardio area, swimming pool), multi-zone mixer amplifiers — volume and source are set separately for each zone.

Acoustic processing

Acoustic processors adjust the amplitude-frequency and phase-frequency characteristics of the audio system, improving speech intelligibility and eliminating sound artifacts. The difference between a system "with" and "without" a processor is audible even to an untrained person.

Signal sources

The final sound of the entire system depends on the player and the quality of the content—it's like watching 480p video on a 4K screen: the source is good, but the result isn't. We use professional players and provide recommendations on the technical requirements for music content.

Microphones and service announcements

Paging microphone consoles are integrated into the background sound system—a system for making service announcements to staff and visitors. This is ideal for shopping centers, supermarkets, and train stations. Digital protocols (Dante) or analog lines with priority are used: background music is automatically muted during announcements, and if a fire alarm is triggered, the Paging channel receives absolute priority.

Switching

Cable is not a place to skimp:

• Cable products must comply with fire safety regulations for the premises.
• The installation method is determined by the Electrical Installation Code and the room classification.
• A poor-quality cable will introduce interference into the audio path, and the digital signal may simply disappear.

How the work is structured

Step 1 – Application and initial data

The engineer will clarify the room's parameters: area, ceiling height, number of zones, and background noise level. If you have a floor plan or design project (DWG/PDF), please send it immediately; this will significantly speed up the selection process and improve its accuracy.

Step 2 – Solution selection and commercial proposal

Based on the initial data, the engineer selects a configuration and prepares a proposal with equipment specifications and cost estimates. For complex projects—multiple zones, high ceilings, challenging acoustics—we perform a design with acoustic calculations and a sound coverage map. This is a separate engineering project, billable and included in the project.

Step 3 – Delivery and installation

We purchase equipment directly from distributors. Our installation team arrives at the agreed-upon time. night editing, so as not to interfere with the business. Cable routes are concealed.

Step 4 – Commissioning and Handover

We set up equalization and volume limiters, check coverage uniformity across zones, and train the administrator on system management. We hand over the project with as-built documentation and a warranty for the work performed.