Adastra BC4V-W 100V 4" White Background Speaker

The Adastra BC4V-W is a 4" 100V line background speaker built for indoor installs where you need even sound across a room or across several rooms. It uses a 2 way design with a crossover network, pairing a coated paper cone main driver with a tweeter for full-sounding low and mid-range frequencies alongside clear top end. That makes it a sensible choice for both music playback and voice announcements in shops, offices, cafes and similar spaces. It comes finished in white to sit quietly against most walls and ceilings.

Wiring is flexible thanks to a rotary selector switch that lets you set the 100V line tapping or run the speaker at 8 Ohms instead. On a 100V line system you can chain multiple speakers on a single amplifier and balance the volume of each one by choosing its power tapping, which is the standard approach for commercial background audio. Connection is made through spring terminals, so fitting the cable is quick and tool-light. The speaker is supplied singly, so order the quantity you need for your layout.

The enclosure is moulded from ABS with a powder coated steel grille, and the trapezoidal shape lets you tuck units neatly into corners or angle them for directional coverage. An adjustable steel wall mounting bracket (US: mounting bracket) is included for wall or ceiling surface mounting, and there are alternative M6 threaded mounting points if you prefer to use your own fixings. It is a practical, industry standard speaker that installs cleanly and does its job without fuss.

Product Manual

Can the BC4V-W run at 8 Ohms as well as 100V?

Yes. A rotary selector switch on the speaker lets you choose a 100V line tapping or switch to 8 Ohms operation, so it suits both distributed line systems and standard low impedance setups.

How does it mount?

It ships with an adjustable steel bracket for wall or ceiling surface mounting. There are also alternative M6 threaded mounting points if you want to use your own fixings, and the trapezoidal shape helps with corner or angled fitting.

Is the speaker sold singly or as a pair?

The BC4V-W is supplied singly. Order the quantity you need to cover your space.

What connection does it use?

It uses spring terminals, so you can fit speaker cable quickly without extra hardware.

Is it suitable for both music and announcements?

Yes. The 2 way design with coated paper cone driver handles full low and mid-range frequencies for music, and it is equally clear for voice announcements.

Where would I typically use it?

It works well as an indoor background speaker in shops, offices, cafes, receptions and similar spaces where you want even, low-level sound across an area.