PRELIMINARY PRODUCT INFORMATION
Industrial Series
Stella™-8C : Ceiling Mount Installation Loudspeaker
1.40
[35.56mm]
8.72
[221.49mm]
7.95
[202.06mm]
11.25
[285.75mm]
Ø0.22
[Ø5.50mm]
6.29
[159.83mm]
5.47
[138.86mm]
Ø13.23
[Ø336.02mm]
Also available in black and custom colors
(backbox not included)
11.66
[296.16mm]
The Stella‑8C ceiling mount installation
loudspeaker is a self‑powered loudspeaker
engineered primarily for use in Meyer Sound’s
Constellation electroacoustic architecture.
Housed in an aluminum die cast enclosure
with a heatsink on the back, the Stella‑8C can
be flush‑mounted in ceilings and walls with
standard backboxes for 8‑inch drivers (with a
minimum depth of 6.5 inches).
response for which Meyer Sound products are
known. As a self‑powered loudspeaker, the
Stella‑8C offers simplified installation for the
multichannel output of Constellation systems or
other installation applications.
eight Stella‑8Cs (one per channel output). The
Stella‑188 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 convenience. Cable runs to the
Stella‑8C of up to 150 feet are possible with just
1 dB of loss in peak SPL using 18 AWG wire.
Balanced audio and DC power are fed to the
Stella‑8C 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 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‑8C. The Stella‑8C
amplifier and signal processing circuits are
designed to tolerate 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.
The Stella‑8C delivers similar acoustical
performance as the Stella‑4 and Stella‑4C
loudspeakers, but with expanded output
capability and wider coverage. The unit's 8‑inch
coaxial cone and 0.75‑inch tweeter transducers
can produce a maximum peak SPL of 117 dB
at one meter over a wide frequency range
of 100 Hz to 22 kHz. The Stella‑8C contains
amplification and signal processing onboard
and exhibits the same low distortion, high
intelligibility, and flat frequency and phase
The required method for delivering balanced
audio and DC power to the Stella‑8C is with the
Stella‑188 external power supply. The single‑
space 19‑inch rack unit can accommodate up to
Preliminary Specifications
Stella‑8C — 04.162.004.01 A
Copyright © 2007
Meyer Sound Laboratories Inc.
All rights reserved
Operating Frequency Range
Frequency Response, Free Field
Maximum Peak SPL
Phase Response
100 Hz – 22 kHz
115 Hz – 20 kHz ±4 dB
117 dB (free field, measured with music and referred to 1 meter)
2 kHz – 18 kHz ±45
°
Coverage
Transducers
Voltage Requirement
Audio/Power Connector
Input Impedance
100
°
One 8" coaxial cone driver, one 0.75" metal dome tweeter
12–18 V DC
Single 5‑pin Phoenix (3 pins for audio, 2 pins for DC power)
20 kΩ balanced internal isolation (Iso‑Input) transformer
+6 dBV (2.0 V rms, 2.8 V peak) continuous average is typically
the onset of limiting for noise and music
Nominal Input Sensitivity
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
meyer sound laboratories inc.
2832 San Pablo Avenue
Berkeley, CA 94702
Current Draw
Noise Floor
Dimensions
3.1 A average; 6.3 A peak
<20 dB A weighted
11.66" (front) x 5.47" (depth without grille)
296.16 mm (front) x 138.86 mm (depth without grille)
9.0 lbs (4.1 kg) without backbox
T: +1 510 486.1166
F: +1 510 486.8356
Weight
Stella-188 external power supply required
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