The Meyer Sound Stella-4 is a self-powered loudspeaker designed for use in Meyer Sound's Constellation electro-acoustic architecture installations, with both in-ceiling and wall-mounting options. It features a Stella-4'single 4-inch cone transducer and is capable of producing a maximum SPL of 108dB at one meter over a wide frequency range from 100Hz to 22kHz. It is designed in a die-cast aluminum enclosure with a rear heatsink and can be easily mounted to a wall or ceiling.
Iso-Input
Meyer Sound’s patented Iso-Input™ differential input circuitry, isolated by transformers, provides high common-mode rejection ratio (CMRR). Powering the unit from a single-ended external 12 to 18V DC power supply significantly reduces induced noise, while the use of a low-voltage power supply eliminates the need for conduit.
MMB-Stella4 support
The MMB-Stella4 bracket allows the Stella-4 loudspeaker to be mounted on a wall, ceiling or single-gang back box. The bracket can also be used with third-party mounting options such as those available from OmniMountbracket, the MAMB-Stella4 adjustable bracket allows the Stella-4 to be mounted on a wall, ceiling or single-gang back box; however, the MAMB-Stella4 bracket allows the Stella-4 to be adjusted up to 45 degrees in any direction.
Stella-188 external power supply
The method required to provide balanced audio and DC power to the Stella-4 is that of the Stella-188 external power supply. The single-bay, 19" unit receives 8 balanced audio channels from the 25-pin D-sub connector and routes them, along with 18V DC, to the 5-pin Phoenix output connectors for greater wiring convenience. Each of the 8 output channels provides DC power to a single Stella-4 loudspeaker, at cable lengths of up to 90m, with only 1dB loss in peak SPL, using 18AWG cable, or to two Stella-4 loudspeakers with limited cable lengths of 45m (also 18AWG).
