Meyer Sound Stella-4 specifications

Stella

™-4 : Installation Loud speaker

PRELIMINARY PRODUCT INFORMATION Industrial Series

The Stella‑4 installation loudspeaker is a self‑

powered loudspeaker engineered primarily for

use in installations of Meyer Sound’s Constellation

electroacoustic architecture. The Stella‑4 is housed

in an aluminum die cast enclosure with a heatsink

on the back, and is designed to be easily mounted

on ceilings or walls with mounting accessories

available from Meyer Sound and third‑party

manufacturers.

Offering exceptional performance for a self‑

powered loudspeaker of its size, the Stella‑4’s

single 4‑inch cone transducer is capable of

producing a maximum peak SPL of 108 dB at one

meter over a wide frequency range of 100 Hz

to 22 kHz. The Stella‑4 contains amplification

and signal processing onboard, and exhibits

the same low distortion, high intelligibility, and

flat frequency and phase response for which

Meyer Sound products are known. As a self‑

powered loudspeaker, the Stella‑4 offers

simplified installation for the multichannel output

of Constellation systems or other installation

applications.

Balanced audio and DC power are fed to the

Stella‑4 from a 5‑pin Phoenix connector on its

rear panel. Meyer Sound's patented Iso‑Input™

transformer‑isolated differential input circuit

yields a high common mode signal rejection ratio

(CMRR). Powering the unit from a unipolar 12 to

18 V DC external power source reduces induced

noise significantly, while the use of a low voltage

supply eliminates the need for wiring conduits.

The MMB‑Stella4 bracket enables mounting the

Stella‑4 onto a wall, ceiling, or single‑gang

electrical back box. The bracket can also be used

with third‑party mounting options, such as those

available from OmniMount®. Like the MMB‑Stella4

bracket, the MAMB‑Stella4 adjustable bracket

enables mounting the Stella‑4 onto a wall, ceiling,

or single‑gang electrical back box; however,

the MAMB‑Stella4 bracket allows the Stella‑4's

position to be adjusted by up to 45 degrees in

any direction.

The required method for delivering balanced audio

and DC power to the Stella‑4 is with the Stella‑188

external power supply. The single‑space 19‑inch

rack unit receives eight channels of balanced audio

from its 25‑pin D‑sub connector and routes the

audio, along with 18 V of DC power, to its 5‑pin

Phoenix output connectors for greater wiring con‑

venience. Each of the eight channel outputs can

deliver DC power to a single Stella‑4 loudspeaker

at cable lengths of up to 300 feet with just 1 dB of

loss in peak SPL, using 18 AWG wire, or to up to

two Stella‑4 loudspeakers with limited cable runs

of 150 feet (also with 18 AWG).

The use of composite multiconductor cables (such

as Belden® 1502R) allows a single cable to carry

both audio and DC power from the Stella‑188 to

the Stella‑4 loudspeakers. The Stella‑4's amplifier

and signal processing circuits are designed to

tolerate supply voltage drops of up to 30 percent,

thereby accommodating light‑gauge cables and

long cable runs. Internal energy storage circuits

minimize the system's peak‑to‑average current

demands, ensuring efficient use of the Stella‑188's

18 V DC output.

Operating Frequency Range 100 Hz – 22 kHz

Frequency Response, Free Field 115 Hz – 20 kHz ±4 dB

Maximum Peak SPL 108 dB (free field, measured with music and referred to 1 meter)

Phase Response 250 Hz – 18 kHz ±30°

Coverage 60° (3 kHz – 13 kHz ±10°); 120° (below 2 kHz)

Transducer One 4" cone driver

Voltage Requirement 12–18 V DC

Audio/Power Connector Single 5‑pin Phoenix (3 pins for audio, 2 pins for DC power)

Input Impedance 20 kΩ balanced internal isolation (Iso‑Input) transformer

Nominal Input Sensitivity +6 dBV (2.0 V rms, 2.8 V peak) continuous average is typically

the onset of limiting for noise and music

Input Level Audio source must be capable of producing +15 dBV (5.6 V rms,

8.0 V peak) into 600 Ω to produce maximum peak SPL over the

operating bandwidth of the loudspeaker

Current Draw 1.5 A average; 3.3 A peak

Noise Floor <20 dB A weighted

Dimensions 5.39" (front OD) x 6.33" (max OD) x 5.32" D

137 mm (front OD) x 161 mm (max OD) x 135 mm D

Weight 5.0 lbs (2.27 kg)

Stella-188 external power supply required

Preliminary Specifications

6.33

[161mm]

5.32

[135mm] 2.00

[51mm]

2.00

[51mm]

5.39

[137mm]

Also available in white and custom colors

Stella‑4 — 04.161.004.02 C

Meyer Sound Laboratories Inc.

meyer sound laboratories inc.

2832 San Pablo Avenue

Berkeley, CA 94702

T: +1 510 486.1166

F: +1 510 486.8356

techsupport@meyersound.com

www.meyersound.com

European Office:

Meyer Sound Lab. GmbH

Carl Zeiss Strasse 13

56751 Polch, Germany

Made by Meyer Sound Laboratories

Berkeley, California USA