DATASHEET
[Ø193.0mm]
Ø
7.60in
STELLA 5XPC
[Ø226.5mm]
Ø
8.92in
[Ø193.0mm]
Ø
7.60in
STELLA 5XPC
[Ø226.5mm]
Ø
8.92in
Ashby-5C Ceiling Loudspeaker
Ø
8.92in
[Ø226.5mm]
Ø
7.60in
[Ø193.0mm]
Outside Dimensions 8.92 in (226.5 mm) diameter
7.17 in (182 mm) depth: front of ceiling surface to built-in
safety attachment ring
Cutout Diameter Range 7.70 - 7.95 in (195.5 - 201.9 mm)
Weight 7.8 lb (3.53 kg)
Enclosure Zinc-plated steel-back can and UL 94 V-0 rated baffle
Grille Perforated steel 9.34 in (237.3 mm) in diameter
Mounting Options C-Ring with bridge kit, new construction bracket, and pendant mount
Ø9.34in
[Ø237,3 mm]
ULTRA SERIES
6.22in
.48in
[12.3mm]
[157,9mm]
7.17in
[182.0mm]
The Ashby-5C self-powered, ceiling-mounted
loudspeaker provides wide coverage and low
distortion, even at high sound levels, for applications that require accurate music reproduction and intelligible voice. The Ashby-5C out
performs all in-ceiling loudspeakers of comparable size
The Ashby-5C is engineered to the same
award-winning standards as all Meyer Sound
IntelligentDC loudspeakers. With on-board
amplification with sophisticated signal
processing, the Ashby-5C exhibits the flat
frequency and phase response for which
Meyer Sound loudspeakers are known
The Ashby drivers are designed and manufactured at the Meyer Sound factory in Berkeley,
California. The 0.75-in metal-dome tweeter
is concentrically mounted over a 5-in cone
driver in an innovative configuration that
maximizes the surface of the wave guide.
With an incredibly smooth, consistent 100°
coverage, fewer loudspeakers can cover a
larger area, which reduces system cost while
maintaining the highest sound quality.
.
Features and Benefits
Self-powered
Easy to install
Extremely wide and consistent coverage
Ultra low distortion
Exceptional SPL-to-size ratio
.
The Ashby-5C requires an external MPS488HP IntelligentDC power supply. The 19-in
(1 RU) unit distributes DC power and balanced
audio to Ashby loudspeakers or other Meyer
Sound IntelligentDC loudspeakers. Composite
multi-conductor cables (e.g., Belden® 1502)
can deliver both DC power and balanced audio
from a single Phoenix™ 5-pin male connector.
The MPS-488HP can power up to 24 Ashby-5C
loudspeakers (3 per channel) and can connect
to Meyer Sound’s RMS remote monitoring system. Using IntelligentDC to supply power from
an external source has several advantages:
Eliminates the need to use conduit
(Class 2 wiring)
Allows longer, lighter-gauge cable runs
Preserves the advantages of self-
powered systems with even more
flexible installation options
Beautiful reproduction of speech and
music
Supports long cable runs with
light-gauge cables
One MPS-488HP can power up to 24
Ashby-5Cs
Housed in an integrated metal back-can to
meet commercial fire codes, the Ashby-5C
can be flush-mounted in ceilings using a lowprofile grille that blends discretely into any
décor. The following Meyer Sound accessories
are designed specifically to install Ashby loudpeakers into a variety of ceiling environments:
C-Ring with Bridge Kit: Used for
suspended ceilings, the C-ring better
distributes the clamping force of the
four mounting clamps, while the bridges
help support and distribute the weight of
the loudspeaker.
New Construction Bracket: This bracket
can be fastened to the ceiling and acts
as a template for ceiling cutout, ensuring
a neat installation.
Ashby Pendant: Allows Ashby loudspeakers
to hang from ceilings where a flushmount is not practical. These elegant
pendant enclosures utilize a minimalistic
design typically used in pendant lighting
to blend discreetly into the environment.
Applications
Distributed systems for music and paging
that demand high-quality audio and
vocal intelligibility
Constellation acoustic systems
Specifications
Acoustical
Operating Frequency Range1 100 Hz - 18 kHz
Frequency Response2 110 Hz - 16 kHz ±4 dB
Phase Response 290 Hz - 16 kHz ± 45
Linear Peak SPL3 104.5 dB, Pink noise
107.5 dB, B-noise
112.0 dB, M-noise
Coverage
Coverage 110
Transducers
Low Frequency One 5-in cone driver
High Frequency One 0.75-in dome tweeter mounted concentrically
in wave guide in front of 5-in driver
Connector Panel
Audio/Power Connector Two 5-pin female Phoenix (one input and a hard wired loop-output)
Pinout Two pins for 48 DC power, three pins for balanced audio
Power Wiring Pin 1: DC Power (-)
Pin 2: DC Power (+)
Audio Wiring Pin 3: Audio shield, chassis/earth
Pin 4: Signal (-)
Pin 5: Signal (+)
LED Displays loudspeaker status
Input
Type Differential, electronically balanced
Impedance 10 k
Nominal Input Sensitivity -2.5 dBV (0.25 V rms, 1.00 V peak) continuous average is typically
the onset of limiting for noise and music where pink noise has 12 dB
peak-to-RMS ratio
Audio Input Source Audio source must be capable of producing +16 dBV (6.3 V rms, 9.0 V
peak) into 600
operating bandwidth of the loudspeaker with a sine wave.
Amplifier
Type High efficiency Class D
Output Power4 220 W (440 W peak)
Cooling Natural convection through the metal enclosure
DC Power
48V DC Powered from Meyer Sound MPS-488HP Power Supply
Approved for Class 2 Wiring used in conjunction with MPS-488HP
Safety Agency Rated Operating Range5 48 V DC
Current Draw
Idle Current 0.16 A rms
Maximum Long-Term Continuous Current (>3 sec) 0.32 A rms
Maximum Instantaneous Peak Current 1.70 A peak
Meyer Sound Power Supply Required For information and specifications on the Meyer Sound MPS-488HP
IntelligentDC external power supply, refer to its datasheet.
Compliance
Safety Agency certification: Standard for audio, video and similar electronic apparatus:
UL 60065, CSA C22.2 NO. 60065-03 (AMD 2),IEC 60065,IEC 62368-1
Fire Rated to UL Standard 2043, Product and Accessories Installed in
Air-Handling Spaces
EMC Certification: CE and FCC Part 15 Emission Class B emission limits applied.
Maximum Cable Lengths
Number of
Speakers
1 1800 1125 700 450 480 260 135 80
2 900 550 350 225 240 130 70 40
3* 600 375 237 150 160 87 45 27
* this applies to one 8C and one 5C looped
6
Maximum Cable Length (feet) - imperial Maximum Cable Length (meters) - metric
12 AWG 14 AWG 16 AWG 18AWG 2.5 mm
°
conical
Ω balanced (AC Impedance)
°
Ω to produce the maximum peak SPL over the
2
1.5 mm21.0 mm20.75 mm
Architectural Specifications
Notes
1. Recommended maximum operating
frequency range. Response depends on
loading conditions and room acoustics.
2. Half-space loading, measured with
octave frequency resolution at 4 m.
3.
Measured at 4 m and referred to 1 m.
Pink noise is an unfiltered, full range test signal
with an average-to-peak ratio of 12.5 dB.
B-noise is a Meyer Sound test signal used to
ensure measurements reflect system behavior
when reproducing the most common input
spectrum, and verify there is still headroom
over pink noise.
M-noise is a full-range signal developed
by Meyer Sound to better measure the
loudspeaker’s performance with music. It has
a constant instantaneous peak level in octave
bands, a crest factor that increases with
frequency, and a full bandwidth peak-toaverage ratio of 18 dB
4. Amplifier wattage rating is based on the
maximum unclipped burst sine wave rms
voltage the amplifier will produce for at
least 0.5 s into the nominal load impedance:
30 V rms (42 V peak).
5. Tolerates voltage drops up to 30% due to
long cable runs. Normal operating conditions
with recommended cable gauge, length,
and number of speakers assures peak SPL to
remain within 2 dB of max SPL specification.
6 Some high frequency loss can occur from
long analog audio cables. For lengths greater
than 500 ft (150 m) Meyer Sound recommends
using low capacitance shielded audio cable or
AES Digital audio cable. Discuss expected high
frequency loss with the cable manufacturer to
determine acceptability.
2
.
Ashby-5C
04.261.004.01A
Copyright © 2017
Meyer Sound Laboratories Inc.
All rights reserved
meyer sound laboratories inc.
2832 San Pablo Avenue
Berkeley, CA 94702
T: +1 510 486.1166
techsupport@meyersound.com
www.meyersound.com
1
/3-
The loudspeaker shall be self-powered and
include one 5-in (127 mm) diameter coaxial
transducer and one 0.75-in (20 mm) dome
tweeter mounted concentrically in wave guide
in front of the 5-in driver.
Performance specifications for a typical production unit shall be as follows, measured at
1/3-octave resolution: operating frequency
range, 100 Hz - 18 kHz; phase response, 290 Hz –
°
16 kHz ±45
and a conical coverage of 110 degrees.
The loudspeaker shall be capable of maximum
linear peak SPL of 112 dB peak at 1 m
measured
using M-noise, a full-range signal developed
by Meyer Sound to better model the loudspeaker’s performance with music.
The loudspeaker shall be equipped with two
Phoenix 5-pin male connectors (pins 1, 2
for 48 V DC
power, pins 3, 4, 5 for balanced
audio). One shall be the input, the second
connector shall be hard wired for looping.
The loudspeaker shall have looping capabilities, and when connected to one channel of
the required power supply up to three units
can be powered.
The audio input shall be electronically balanced
with a 10 kohm impedance and shall accept a
nominal -2.5 dBV (0.25 V rms, 1 V peak) signal.
The loudspeaker shall incorporate a highly efficient Class-D power amplifier with a total output
power of 220 W (440 W peak).
Power requirements for the loudspeaker shall
be a Meyer Sound MPS-488HP power supply,
capable of delivering 48 V DC. Current draw for
the loudspeaker shall be 0.16 A in idle state and
its maximum long-term continuous current draw
shall be 0.32 A with a duration of less than 3 s.
The loudspeaker shall tolerate voltage drops up
to 30% caused by long cable runs when connected to one channel of the required power
supply. Maximum cable run for a single unit is
450 ft with 18 AWG (135 m with 1.0 mm2) and
the maximum cable run for three looped units is
150 ft with 18 AWG (45 m with 1.0 mm2).
Loudspeaker components shall be housed in a
zinc-plated steel enclosure which shall also include a UL94V-0 rated baffle. The enclosure shall
incorporate 4 mounting clamps for flush-mount
installations in ceilings and walls with a minimum
depth of 7.17 in (182 mm). Grille shall be made
of perforated steel and its diameter shall be 9.34
in (237.3 mm).
Dimensions shall be 8.92 in (226.5 mm) in diameter and 7.17 in (182 mm) in depth (front of ceiling surface to built-in safety attachment ring).
Cutout diameter range shall be 7.60 - 7.875 in
(193 - 200 mm). Weight shall be 7.8 lb (3.53 kg).
The loudspeaker shall be the Meyer Sound
Ashby-5C.
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