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OPERATING INSTRUCTIONS
Ashby-5C and Ashby-8C
Ceiling Loudspeakers with IntelligentDC
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© 2017
Meyer Sound. All rights reserved.
Ashby Loudspeaker Operating Instructions
PN 05.260.005.01 A
The contents of this manual are furnished for informational purposes only, are subject to change without notice, and should not be construed as a commitment by Meyer Sound Laboratories Inc. Meyer Sound assumes no responsibility or liability for any errors or inaccuracies that may appear in this manual. Except as permitted by applicable copyright law, no part of this publication may be reproduced,
stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording or otherwise, without prior written permission from Meyer Sound.
Compass RMS, RMS, and all alpha-numeric designations for Meyer Sound products and accessories are trademarks of Meyer Sound.
Acheron, Compass, Meyer Sound, the Meyer Sound wave logo, and Thinking Sound are registered trademarks of Meyer Sound Laboratories Inc. (Reg. U.S. Pat. & Tm. Off.). All third-party trademarks mentioned herein are the property of their respective trademark holders.
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CONTENTS
Chapter 1: Introduction to the Ashby Loudspeaker .........................5
Chapter 2: Connecting Ashby Loudspeakers ...................................7
Ashby Power and Input Panel .....................................................................7
Cable Specification .....................................................................................7
On/Status LED.............................................................................................9
Operating Temperature and Amplifier Cooling..........................................10
Connecting and Powering Ashby Speakers..............................................10
Configuring the MPS-488HP In Compass ................................................11
Chapter 3: Installing Ashby Loudspeakers .....................................13
Meyer Sound Accessories ........................................................................13
Wiring the Speaker ....................................................................................14
Installing Into a Standard Ceiling ..............................................................15
Installing Into a suspended Ceiling ...........................................................16
Installing into a High Ceiling with the Pendant..........................................17
Appendix A: Ashby Accessories .................................................................19
Appendix B: Assembling Phoenix-to-Phoenix Loudspeaker Cables ......21
Appendix C: Ashby Loudspeakers Specifications ....................................23
Appendix D: Ashby Pendant Dimensions ..................................................25
Ashby-5C ..................................................................................................25
Ashby-8C ..................................................................................................25
Appendix E: Ashby Loudspeaker Dimensions...........................................27
Ashby-5C ..................................................................................................27
Ashby-8C ..................................................................................................27
Appendix F: Ashby Loudspeakers Declarations of Conformity...............29
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CHAPTER 1: INTRODUCTION TO THE ASHBY LOUDSPEAKER
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The Ashby self-powered, ceiling-mount, installation loudspeakers provide wide-coverage and low distortion, even at
high sound levels, for applications that require accurate
music reproduction and intelligible voice. The Ashby speakers offer sonic performance beyond other in-ceiling loudspeakers of comparable size.
The Ashby-5C and Ashby-8C speakers are engineered to
the same award-winning standards as all of Meyer Sound's
IntelligentDC loudspeakers. With their on-board amplification with sophisticated signal processing, they exhibit the
flat frequency and phase responses for which Meyer Sound
loudspeakers are known.
The Ashby loudspeakers receive DC power and balanced
audio from a single Phoenix™ 5-pin male connector. Using
IntelligentDC to power the units 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.
Housed in integrated metal back-cans to meet commercial
fire codes, the Ashby speaker can be flush-mounted in the
ceilings using a discrete low-profile grille that blends into
any décor.
All Ashby drivers are designed and manufactured at Meyer
Sound's factory in Berkeley, California. The Ashby 0.75-in
metal dome tweeter is concentrically mounted in an innovative configuration that maximizes the surface of the waveguides. Their incredibly smooth and consistent 100-degree
coverage lets you use fewer speakers to cover a larger area,
which reduces system cost while maintaining the highest
sound quality.
The Ashby-5C and Ashby-8C include 5- and 8-inch cone
drivers, respectively. The Ashby-8C is ideally suited for
applications that require a deeper low-end and higher SPL.
The Ashby speakers require an external MPS-488HP IntelligentDC power supply. The 19-in (1 RU) rack unit distributes
DC power and balanced audio to Ashby speakers, or other
Meyer Sound IntelligentDC loudspeakers. Composite multiconductor cables (e.g., Belden® 1502) can deliver both DC
power and balanced audio. The MPS-488HP can connect to
Meyer Sound’s RMS remote monitoring system.
Ashby speakers can be installed in a variety of ceiling environments using Meyer Sound accessories:
C-Ring with Bridge Kit: Used for suspended ceilings, the
C-ring better distributes the clamping force of the
speaker's four mounting clamps while the bridges help
support the weight of the speaker and provide additional
safety in case the tile breaks.
In addition, the C-ring can be used independently on
brittle ceiling surfaces.
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 flush-mount is not practical. These elegant pendant enclosures utilize a minimalistic design typically used in pendant lighting to blend discreetly into the
environment.
Meyer Sound User Guides
Meyer Sound user guides include the following icons for
notes, tips, and cautions:
NOTE: A note identifies an important or useful
piece of information relating to the topic under
discussion.
TIP: A tip offers a helpful tip relevant to the topic
at hand.
CAUTION: A caution gives notice that an action
may have serious consequences and could
cause harm to equipment or personnel, or could
cause delays or other problems.
Meyer Sound Technical Support
Information and specifications are subject to change.
Updates and supplementary information are available at
www.meyersound.com.
Meyer Sound Technical Support is available at:
Te l: +1 510 486.1166
Te l: +1 510 486.0657 (after hours support)
Web: www.meyersound.com/contact
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CHAPTER 1: INTRODUCTION TO THE ASHBY LOUDSPEAKER
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CHAPTER 2: CONNECTING ASHBY LOUDSPEAKERS
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ASHBY POWER AND INPUT PANEL
The Ashby-5C and Ashby-8C loudspeakers require an MPS488HP IntelligentDC power supply to function properly. The
MPS-488HP can power up to 24 Ashby-5C (3 per channel) or
16 Ashby-8C (2 per channel).
Ashby speakers receive DC power (-, +) and balanced audio
(+, -, shield) from a Phoenix 5-pin male input connector. The
pins are clearly labeled on the Ashby Power and Input panel
shown below.
Figure 1: Ashby Power and Input panel
Looping
Ashby speakers can be looped using the connectors on the
Ashby Power and Input panel. The table below shows the
maximum number of speakers that can be looped from one
channel of the MPS- 488HP power supply to function properly and meet compliance requirements.
Speaker Attenuator Knob
All Ashby speakers powered by a single channel of an MPS488 receive the same DC voltage and the same audio signal.
To set speakers to different levels, use the Speaker Attenuation knob (on Ashby speakers equipped with this feature).
The Speaker Attenuator knob (shown below) is located on the
front bezel. Possible values are: 1, 2, 3, 6, 10, and 20 dB.
Figure 2: Speaker Attenuator
CABLE SPECIFICATION
Each speaker ships with two Phoenix 5-pin, female cablemount connectors for speaker cable assembly (see “Assembling Phoenix-to-Phoenix Loudspeaker Cables” on page 21).
A single composite cable (e.g., Belden 1502) can route DC
power and balanced audio to the Ashby speakers (see
“Belden 1502 Cable” on page 9).
It is extremely important to connect each pin correctly. Maintain proper polarity (- to -, + to +) or system performance will
degrade and possibly damage the speaker (see Appendix B,
“Assembling Phoenix-to-Phoenix Loudspeaker Cables”).
CAUTION: Connect the 48 VDC directly (and
only) from the external power supply to the
48 VDC pins on the speaker connector.
Model Maximum Number
Ashby-5C 3 (2 looped)
Ashby-8C 2 (1 looped)
Mixed
1 Ashby 8C
1 Ashby 5C
Current Draw
DC current draw for Ashby loudspeakers is dynamic and fluctuates with changing operating levels. As the cable length
increases between an Ashby loudspeaker and its external
power supply, so does the resistance, which can eventually
cause a voltage drop at the loudspeaker. This can compromise amplifier performance, peak SPL, and frequency
response. The next section shows how to select the right
cable gauge for each speaker.
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CHAPTER 2: CONNECTING ASHBY LOUDSPEAKERS
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Cable Length and Gauge
The maximum cable length depends on the type and number
of speakers looped and the gauge of the cable. Table 1
shows the maximum cable length for Ashby speakers using
18 AWG cable with only 1 dB of peak SPL loss.
CAUTION: The minimum cable gauge and type
of wire must conform with national and regional
electrical and building codes where speakers are
installed. The maximum number of speakers shown in
Table 1 results in a maximum 3 second average power
within Class 2 wiring limits in most countries.
Using 18 AWG wire, a single Ashby-5C loudspeaker can use
up to 450 ft of cable (300 ft for Ashby-8C) from the Power Supply and lose no more than 1 dB of peak SPL. Unlike 70 V linedistributed speakers, Ashby speakers do not suffer gain loss
with the long 18 AWG cables.
Table 1: Maximum cable length using 18 AWG cable
Model Number of
Speakers
1 470
Ashby-5C
Ashby-8C
2 235
3 156
1 313
2 157
Table 2 shows the maximum cable runs for a single channel of
an MPS-488HP powering up to 3 Ashby-5C or one Ashby-8C
and one looped Ashby-5C, with different wire gauges. Table 3
shows the same information for European cable gauges.
Table 2: Maximum cable length for different numbers of Ashby
speakers using four wire gauges (AWG)
Maximun Cable Length (ft)
Maximum Cable
Length (ft)
NOTE: Some high frequency loss can occur
from long analog audio cables. For lengths
greater than 500 ft 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.
Table 3: Maximum cable length for different numbers of Ashby
speakers using four wire gauges (m)
Maximun Cable Length (m)
Model
Ashby-5C
Ashby-8C
Number of
Speakers
1
2
3
1
2*
2.5 mm2
0.0052
Ω/m)
(
480 260 135 80
240 130 70 40
160 87 45 27
320 175 90 55
160 87 45 27
1.5 mm2
0.01076
Ω/m)
(
1.0 mm2
0.02087
Ω/m)
(
0.75 mm2
0.03307
Ω/m)
(
*Applies to one Ashby-8C with one looped Ashby-5C
NOTE: Some high frequency loss can occur
from long analog audio cables. For lengths
greater than 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.
The maximum total cable resistance between one Ashby-5C
speaker and its external power supply is 6
Ω, and 4 Ω for one
Ashby-8C.
When using the maximum number of speakers per channel (2
Ashby-5C or 3 Ashby-8C), it should not exceed 2
Ω.
Model
Number of
Speakers
12 AWG
0.0016
Ω/ft)
(
14 AWG
0.00253
Ω/ft)
(
16 AWG
0.00402
Ω/ft)
(
18AWG
0.00636
Ω/ft)
(
Calculating the Maximum Cable Length
The maximum cable length for an Ashby loudspeaker can be
1800 1125 700 450
900 550 350 225
600 375 237 150
1200 750 475 300
600 375 237 150
Ashby-5C
Ashby-8C
1
2
3
1
2*
*Applies to one Ashby-8C with one looped Ashby-5C
calculated using the formulas shown below. The Wire Resistance Per Foot (WRPF) is the resistance (in
Ω) for one foot of
individual wire of the chosen gauge. Enter the WRPF in the
equations below to determine maximum cable length. The
equations compensate for round trip length.
For 18 AWG, WRPF = 0.006385
Ω
Ashby-5C: Maximum length (ft) = 3 / (WRPF x # of Ashby-5C)
Ashby-8C: Maximum length (ft) = 2 / (WRPF x # of Ashby-8C)
To calculate the maximum length in meters, substitute the
Wire Resistance per Meter for the selected wire gauge.
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ASHBY OPERATING INSTRUCTIONS
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screws
!
Belden 1502 Cable
The Belden 1502 multiconductor cable is an effective, convenient way to connect an Ashby loudspeaker system. DC
power and balanced audio use dedicated conductors in a
single cable jacket. Table 4 shows the wiring conventions.
The thicker red and black wires (18 AWG) are for DC
power.
The blue, white, and shield drain wires for audio.
Figure 3: Belden 1502 multiconductor cable
Table 4: Ashby loudspeaker cables with Belden 1502
Wire Signal Gauge (AWG)
Black DC power (–) 18
Red DC power (+) 18
Shield drain Audio shield 24
Blue Audio signal (–) 22
White Audio signal (+) 22
ON/STATUS LED
The LED on the Ashby connector panel is primarily intended
for use at the factory and before installation since it cannot be
seen when a speaker is installed.
CAUTION: Avoid “hot plugging” by inserting
the Phoenix connector into the Ashby speaker
with live 48 V present (MPS-488HP powered ON).
The MPS-488HP can supply basic information about Voltage
and Load Current on its front panel LEDs. The Voltage and
Load Current LEDs verify whether each channel output has
voltage and whether the connected loudspeakers are receiving DC power and audio.
For more information, refer to the MPS-488HP Operating
Instructions.
If you require more information about the status of the speakers connected to the MPS power supply, we recommend
using RMS (Remote Monitoring System).
The On/Status LED on the Ashby connector panel indicates
the loudspeaker's operational status with three colors:
Normal: Green
Limiting: Yellow
Clipping: Red
Using Separate Cables for DC Power and Audio
If your installation does not allow using Belden 1502 multiconductor cable, or requires cable runs longer than 150 ft,
use separate cables for DC power and balanced audio (see
“Cable Length and Gauge” on page 8). Use a high-quality,
balanced cable for audio. Attach the separate cables to the
Phoenix connector as shown in Figure 4.
Note the orientation of the connector while assembling the
cable. This view shows the screws facing you.
CAUTION: It is very important to verify and
measure the cabling before applying power.
Figure 4: Separate Cables for DC Power and Balanced Audio
Normal
When powering on the Ashby loudspeaker, the On/Status
LED indicates the following startup events:
1. Multiple colors flash during its power-on sequence.
2. When it turns solid green, the power-on sequence has
completed and the speaker is ready.
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CHAPTER 2: CONNECTING ASHBY LOUDSPEAKERS
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Limiting
The On/Status LED turns yellow to indicate limiting. When
engaged, the limiter protects the loudspeaker's drivers and
prevents signal peaks from causing excessive amplifier distortion, thereby preserving headroom and maintaining a
smooth frequency response at high levels.
When source levels return to normal, below the limiter threshold, the LED turns green and limiting ceases.
The Ashby performs within its acoustical specifications when
the LED is green, or when limiting is not continuous.
If limiting activity is continuous, the loudspeaker is near its
operating limits where:
Increasing the input level has no effect.
Distortion increases due to clipping and nonlinear driver
operation.
The drivers are subjected to excessive heat and excur-
sion, which compromises their life span and may eventually damage them over time.
CAUTION: The On/Status LED turns yellow
when the loudspeaker's signal rises about 2 dB
above the limiting threshold, indicating that a safe,
optimum level has been exceeded.
Clipping
The On/Status LED lights red when the speaker's input stage
clips, causing the amplifier to overload. Reduce the source
level to avoid distortion and overloading the amplifier.
CONNECTING AND POWERING ASHBY SPEAKERS
To connect Ashby loudspeakers to the MPS-488HP and start
the system:
1. Power off the MPS-488HP.
2. Use balanced XLR cables to connect audio sources from
a mixer or audio processor to the MPS-488HP channel
inputs.
3. Use the MPS-488HP Link switches to route channel
inputs to the desired channel outputs.
See the MPS-488HP Operating Instructions (PN
05.205.005.01) for information on the MPS-488HP Link
switches.
4. Connect Ashby speakers to the MPS-488HP channel
outputs.
CAUTION: Do not connect more than three
Ashby-5C or two Ashby-8C on one channel of
the MPS-488HP.
5. Power on the MPS-488HP and monitor the LEDs on the
front panel to verify connections.
6. Enable output from the audio sources connected to the
MPS-488HP.
TIP: For complete information on using the
MPS-488HP IntelligentDC power supply, see the
MPS-488HP Operating Instructions (PN
05.205.005.01).
OPERATING TEMPERATURE AND AMPLIFIER COOLING
Ashby loudspeakers rely solely on natural convection to cool
their enclosures. Efficient amplifier design keeps temperatures low even when operated in high ambient temperatures
and driven continuously at high output levels.
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CONFIGURING THE MPS-488HP IN COMPASS
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To configure the MPS-488HP in Compass Control Software:
1. Power on the MPS-488HP and RMServer(s).
2. Connect Compass and RMServer to the same local area
network (LAN).
3. In Compass, click the RMServer > Inventory tab.
4. In the Device list, right-click the MPS-488HP powering
the Ashby speakers and choose Edit Loudspeaker
Inventory.
5. In the Edit Loudspeaker Inventory dialog box, click in the
Product column and select the Ashby loudspeaker model
connected to each MPS-488HP channel output.
ASHBY OPERATING INSTRUCTIONS
Figure 6: Voltage and current draw for connected speakers in Compass
CAUTION: Disconnect the mains plug or power
off the MPS-488HP before disconnecting its
power cord.
Figure 5: Edit Loudspeaker Inventory dialog in Compass
6. Enter a name and the number of speakers looped on each
channel.
7. Click OK to save and upload the MPS-488HP loudspeaker inventory.
Once the MPS-488HP is added to an RMS page, the
device container can display channel labels with simple
device status or a full meter bar display along with a
detailed text view showing voltage and current draw for
the connected Ashby loudspeakers.
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CHAPTER 2: CONNECTING ASHBY LOUDSPEAKERS
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CHAPTER 3: INSTALLING ASHBY LOUDSPEAKERS
This chapter provides procedures to install Ashby loudspeakers into ceilings, pendants, and suspended ceilings.
MEYER SOUND ACCESSORIES
Meyer Sound provides several accessories to install Ashby
speakers.
Tile C-Ring and Bridge Kit
The Tile C-Ring distributes the clamping force of the speaker
mounting clamps and is highly recommended on brittle ceiling surfaces. It can be used with or without the bridges (see
below).
You can order the Tile C-Ring using the part numbers below:
Ashby-8C Tile C-Ring: PN 40.260.130.01
Ashby-5C Tile C-Ring: PN 40.261.130.01
Figure 7: Using a C-ring to reinforce a brittle ceiling
The Tile C-Ring with Bridge Kit is used for suspended ceilings. The C-ring distributes the clamping force of the
speaker’s four mounting clamps and the bridges support and
distribute the weight of the speaker.
New Construction Bracket
This bracket can be fastened to the ceiling and acts as a template for ceiling cutout, ensuring a neat installation. The
bracket fastens to the ceiling using #10 screws.
You can order the new construction brackets using the following part numbers:
Ashby-8C New Construction Bracket: PN 40.260.140.01
Ashby-5C New Construction Bracket: PN 40.261.140.01
Figure 9: New construction bracket
Meyer Sound Pendant
The Meyer Sound pendant allows Ashby loudspeakers to
hang from ceilings where a flush-mount is not practical.
These elegant pendant enclosures utilize a minimalistic
design typically used in pendant lighting to blend discreetly
into the environment.
The pendant holds an Ashby loudspeaker inside without
requiring extra hardware using the same grille as a ceiling
mounted Ashby to maintain a consistent appearance.
Figure 8: The C-Ring with Bridge Kit
You can order the C-Ring with Bridge Kit using the part numbers below:
Ashby-8C Tile C-Ring with Bridge Kit: PN 40.260.131.01
Ashby-5C Tile C-Ring with Bridge Kit: PN 40.261.131.01
Figure 10: Ashby Pendant
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CHAPTER 3: INSTALLING ASHBY LOUDSPEAKERS
The pendant includes a top cover to hide the back of the
speaker and wiring connectors making them perfect for
installations where they may be viewed from above. The top
cover includes:
Holes with protection grommets for cables;
A center hole for a threaded rod;
Three tabs for steel wires (not included) for a single hang
point. The tabs must be bent up before use.
The Ashby-5C and Ashby-8C have separate pendant models.
See “Ashby Pendant Dimensions” on page 25.
You can order Ashby pendants using the following part
numbers:
Ashby-8C Pendant: PN 40.260.030.01
Ashby-5C Pendant: PN 40.261.030.01
WIRING THE SPEAKER
1. Prepare the wires.
The speaker provides a strain relief fitting for bare wires,
1/2-in flexible metal conduit, or 1/2-in 14 NPSM
threaded conduit adapters.
2. For bare wires or conduit without a threaded conduit
adapter, open the wiring cover, loosen the L-bracket
screws, and remove the clamping screws.
To finish wiring a conduit with a threaded conduit
adapter, see the next procedure.
Figure 12: Clamping the wire
For installations using a threaded conduit adapter:
1. Open the wiring cover and completely remove the Lbrackets.
2. Install the threaded adapter, insert the conduit, and connect the wires.
3. Close and latch the wiring cover.
Figure 13: Clamping a conduit
Figure 11: Removing clamping screws
3. Insert the cable or 1/2-in flexible metal conduit into the
input or looping connector and feed the wires through the
L-bracket opening.
4. Close and latch the wiring cover, and clamp the wire or
conduit with the L-brackets.
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ASHBY OPERATING INSTRUCTIONS
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INSTALLING INTO A STANDARD CEILING
1. Locate the desired position of the speaker and mark its
center on the ceiling.
2. Use the template provided with the speaker to align the
hole in the center of the template with the mark.
3. Trace the perimeter of the template with a pencil.
4. Cut along the traced circle on the ceiling and remove the
cutout disc.
Figure 14: Cutting a hole in the ceiling with template provided
5. Install the speaker into the ceiling and hold flush to the
ceiling.
Make sure the speaker's clamps are flush with the
speaker to allow it to pass freely into the ceiling.
6. Use a #2 Phillips screwdriver to torque the four screws to
hold the speaker in place.
CAUTION: Do not over tighten! If using a pow-
ered screwdriver, set the torque to 0.8 N-m (7 inlbs). if the screwdriver torques out, slowly increment
the torque setting until the mounting clamps begin to
move.
NOTE: if desired or required, a safety lanyard
can be attached to the speaker with a carabiner
before inserting the speaker into the ceiling (see
below).
Figure 16: Ashby-5C (top) and Ashby-8C (bottom) speaker mounting
clamp screws and Attenuation Selector
7. Before placing the grille frame on the speaker, choose an
attenuation setting (if the speaker has this feature).
Figure 15: Inserting the speaker into the ceiling
Figure 17: Attenuation Selector
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CHAPTER 3: INSTALLING ASHBY LOUDSPEAKERS
Screws
Clamps
8. Place the speaker grille on the installed speaker.
Make sure to line up the grille with the magnets on the
speaker.
Figure 18: Placing the speaker grille on the speaker
INSTALLING INTO A SUSPENDED CEILING
1. Assemble the C-ring with tile bridge in the ceiling.
Figure 20: Installing the speaker into a bridge in the ceiling
Safety Lanyard
Some construction codes require a secondary support system.
Ashby speakers have a built-in attachment point for a loadrated carabiner with lanyard (neither included) to safely support the weight of the speaker.
2. Slide the C-ring on the tile bridge until it is centered with
the hole.
Figure 19: Installing the speaker into the C-ring with Bridge Kit
3. Install washers and #6 sheet metal screws (included) into
the C-ring and tighten into place.
4. Install the speaker by tightening the screws on the bezel
of the speaker to clamp it to the C-ring (see Figure 16 on
page 15 to locate the clamping screws).
Figure 21: Attaching a safety lanyard for secondary support
NOTE: The tile bridge acts as a fail-safe in case
the tile gets damaged, so it may not contact the
railings.
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ASHBY OPERATING INSTRUCTIONS
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INSTALLING INTO A HIGH CEILING WITH THE PENDANT
The pendant is designed to replicate flush-mounted ceiling
installations, utilizing the four integrated clamps, and thus do
not require extra hardware.
To install the speaker in a pendant:
1. Remove the speaker grille and make sure that the clamps
are away from the front of the bezel and locked in the
open position.
2. Attach the supplied lanyard using the supplied hardware
onto the speaker to act as a secondary support.
6. Lock the speaker securely into place by tightening the
mounts until the speaker is flat against the pendant.
CAUTION: Do not over tighten! If using a pow-
ered screwdriver, set the torque to 0.8 N-m (7 inlbs). if the screwdriver torques out, slowly increment
the torque setting until the mounting clamps begin to
move.
7. Attach the lanyard to a secondary support point.
8. Before placing the grille frame, choose an attenuation setting, if the speaker has this feature (see Figure 17).
9. Place the speaker grille on the installed speaker.
Make sure to line up the grille with the magnets on the
speaker.
Figure 22: Attaching a safety lanyard
3. Insert wires through the grommets and attach them to the
Ashby connector panel.
See Appendix D, “Ashby Pendant Dimensions” to see
where these items are located.
4. Slide the lanyard through one of the holes.
5. Insert the Ashby loudspeaker inside the pendant and
rotate the four Phillips head screws clockwise to engage
the speaker clamps to the pendant.
Figure 24: Fitting the grille frame onto an Ashby speaker in a pendant
Figure 23: Installing an Ashby speaker into a Meyer Sound pendant
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CHAPTER 3: INSTALLING ASHBY LOUDSPEAKERS
Equalization for Pendant Installation
Ashby-8C and Ashby-5C are optimized for ceiling mounting
(infinite baffle) and require some filters to achieve flat
response when mounted in a pendant or free-air. These filters
simulate the infinite baffle effect of the ceiling.
The simplest solution is to use a minimum-phase U-Shaping
filter found in GALAXY processors.The filter is a low frequency shelf with a 580 Hz breakpoint and 6 dB/octave
slope. The gain is +6 dB for the Ashby-8C and +8 dB for the
Ashby-5C.
Figure 25: Filter settings Ashby-8C (top) and Ashby-5C (bottom)
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APPENDIX A: ASHBY ACCESSORIES
The following Ashby accessories are available from Meyer Sound.
Ashby Accessories
Part Number Accessory Notes
40.260.030.01 Ashby-8C Pendant
40.260.061.01 Ashby-8C Grille Frame Replacement (White)
40.260.061.02 Ashby-8C Grille Frame Replacement (Black)
40.260.130.01 Ashby-8C Tile C-Ring
40.260.131.01 Ashby-8C Tile C-Ring with Bridge kit
40.260.140.01 Ashby-8C New construction bracket
40.261.030.01 Ashby-5C Pendant
40.261.060.01 Ashby-5C Grille Frame Replacement (White)
40.261.060.02 Ashby-5C Grille Frame Replacement (Black)
40.261.130.01 Ashby-5C Tile C-Ring
40.261.131.01 Ashby-5C Tile C-Ring with Bridge kit
40.261.140.01 Ashby-5C New construction bracket
484.065 Phoenix 5-pin female cable mount connector Connects to MPS-488HPp channel output connectors and
Ashby Input connectors
524.014 Bulk cable, no connectors (regular) 500-ft spool, black
524.015 Bulk cable, no connectors (plenum) 500-ft spool, white
NOTE: Bulk cables use Belden 1502R (regular) or Belden 1502P (plenum) cable. Belden 1502 is a composite
cable comprised of two 18 AWG wires for DC power, two 22 AWG wires for balanced audio, and one 24 AWG
wire for audio shield. This single cable delivers DC power and balanced audio to loudspeakers at cable runs of up to
150 feet with only 1 dB of loss in peak SPL. Longer cable runs are possible using heavier gauges for DC power and
separate cables for balanced audio. For more information, see “Using Separate Cables for DC Power and Audio” on
page 9.
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APPENDIX A: ASHBY ACCESSORIES
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APPENDIX B: ASSEMBLING PHOENIX-TO-PHOENIX LOUDSPEAKER CABLES
!
1”
0.275
!
When connecting Phoenix-equipped Ashby loudspeakers to the MPS-488HPp power supply (also with Phoenix connectors),
you need a Phoenix 5-pin female to Phoenix 5-pin female cable. The following procedure documents how to assemble this
cable.
CAUTION: When wiring loudspeaker cables, it is extremely important to wire each pin correctly. Make sure the
48 V DC from the external power supply is wired directly (and only) to the 48 V DC pins on the loudspeaker connector, and that the polarity is observed (negative to negative, positive to positive) to avoid damage to the loudspeaker.
In addition, make sure to wire audio pins correctly as polarity reversal on audio signals affect system performance.
To assemble a Phoenix-to-Phoenix cable:
1. If the cable has not yet been stripped, strip one end of the cable. Strip the outer shielding by 1 inch and then strip the black,
red, blue, and white wires by 0.275 inch.
2. Insert the five exposed conductors into the five cable holes in a Phoenix 5-pin female cable mount connector.
The wiring scheme is shown below.
Pin Destinations for Phoenix 5-Pin Female Cable Mount Connector
3. Secure the conductors by tightening the five screws in the Phoenix cable mount connector.
Torque the screws to 5–6 Nm (4.4–5.3 in-lbs).
CAUTION: Screws should not be inserted into the Phoenix connector while the connector rests in a mating plug.
Doing so will damage the contacts. During assembly, hold the Phoenix connector in place externally.
4. Repeat the previous steps and attach the other end of the cable to another Phoenix 5-pin female cable mount connector.
5. Verify the wiring polarity is correct for both cable ends.
Assembled Phoenix-to-Phoenix Cable
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APPENDIX B: ASSEMBLING PHOENIX-TO-PHOENIX LOUDSPEAKER CABLES
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APPENDIX C: ASHBY LOUDSPEAKERS SPECIFICATIONS
Acoustical
Complete acoustical information is available in MAPP XT software, which functions both as an interactive data sheet and system
design prediction tool. MAPP-XT provides specifications for coverage pattern, frequency response, maximum output SPL (single
Ashby or complete system), speaker headroom, and the maximum level to which a speaker (or system) can be driven while maintaining linear performance.
Although broadband pink noise has been the standard input signal for acoustic measurement and prediction, it rarely represents
real-world content. Our MAPP XT measurements use B-Noise, a test signal created by Meyer Sound, that ensures the predictions
obtained reflect system behavior under the most common input spectrum. See www.meyersound.com for information on MAPP XT.
Transducers
Low Frequency
High Frequency One 0.75-in tweeter mounted concentrically in waveguide in front of low frequency driver
Connector Panel
Audio/Power Connector Two 5-pin female Phoenix (one input and a hardwired loop-out)
Pinout Two pins for 48 V DC power, three pins for balanced audio
Power Wiring
Audio Wiring
Audio Input
Impedance 10 kΩ balanced (AC impedance)
Ashby-5C: One 5-in cone driver
Ashby-8C: One 8-in cone driver
LED Displays loudspeaker status
Pin 1: DC power (–)
Pin 2: DC power (+)
Pin 3: Audio shield, chassis/earth
Pin 4: Audio (-)
Pin 5: Audio (+)
Type Differential, electronically balanced
Nominal Input Sensitivity
Power Amplifier
Output Power
Safety Agency Rated
Operating Voltage
0 dBV (1 V rms, 4.2 V peak) continuous average is typically the onset of limiting for noise and
music. Pink noise has 12 dB peak-to-RMS ratio
Input Source
Cooling Natural convection through the metal enclosure
DC Power
Audio source must be capable of producing +16 dBV (6.3 V rms, 9.0 Vpk) into 600 Ω to produce
the maximum peak SPL over the operating bandwidth of the loudspeaker with a sine wave.
Type High Efficiency Class D
(1)
220 W (440 W peak)
48 V DC
Supplied from Meyer Sound MPS-488HP Power Supply
Approved for Class 2 wiring used in conjunction with MPS-488HP
48 V DC
(2)
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APPENDIX C: ASHBY LOUDSPEAKERS SPECIFICATIONS
Current Draw Ashby-5C Ashby-8C
Idle Current 0.16 A rms 0.16 A rms
Maximum Long-term
Continuous Current (> 3 s)
Maximum Instantaneous
Peak Current
0.32 A rms 0.78 A rms
1.7 A peak 3.10 A peak
Meyer Sound power supply is required. See the datasheet for the Meyer Sound MPS-488HP IntelligentDC External Power
Supply for information and specifications.
NOTES
1. Amplifier wattage rating 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).
2. Tolerates voltage drops up to 30 percent 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 maximum SPL specification.
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APPENDIX D: ASHBY PENDANT DIMENSIONS
Weight = 4.5 lb (2.04 kg)
holes to insert wires
tabs in
Weight = 8.0 lb (3.63 kg)
holes to insert wires
tabs in
ASHBY-5C
ASHBY-8C
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APPENDIX D: ASHBY PENDANT DIMENSIONS
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APPENDIX E: ASHBY LOUDSPEAKER DIMENSIONS
PP
LQ
PP
LQ
PP
LQ
PP
LQ
PP
LQ
PP
LQ
Weight = 7.80 lb (3.54 kg)
PP
LQ
PP
LQ
PP
LQ
PP
LQ
PP
LQ
PP
LQ
Weight = 13.80 lb (6.26 kg)
ASHBY-5C
ASHBY-8C
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APPENDIX E: ASHBY LOUDSPEAKER DIMENSIONS
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APPENDIX F: ASHBY LOUDSPEAKERS DECLARATIONS OF CONFORMITY
ASHBY-5C, ASHBY-8C CE DECLARATION OF CONFORMITY PN: 01.260.001.08 Rev. A Dated 2017-08-25 Page 1 of 1 ECO 24610V
DECLARATION OF CONFORMITY according to ISO/IEC 17050-1 and EN 17050-1
Manufacturer's Name: Meyer Sound Laboratories Inc.
Manufacturer's Address: 2832 San Pablo Avenue
Berkeley, California 94702-2204 USA
Declares that the product
Product Type: Powered Speakers
Product Names: ASHBY-5C, ASHBY-8C
Product Options: All
Conforms to the following standards:
Safety:
EN 62368-1:2014.
IEC 62368-1:2014 (Second Edition).
EN 60065:2002/A1:2006 + A11:2008 + A2:2010 + A12:2011, +/AC:2007
IEC 60065(ed.7), IEC 60065(ed.7);am1
UL 60065 Edition 7 - Revision Da te 2013/07/24
CSA C22.2 NO. 60065-03 (INCLUDES AMENDMENTS 1 & 2)
EMC:
EN 55032:2012 ; CISPR 32:2012 Emission
EN 55103-2: 2009 Immunity
Environmental:
EN 50581:2012
This product complies with the requirements of the European Union directives listed below:
2014/35/EU Low Voltage Directive
2014/30/EU EMC Directive
2012/19/EU Waste Electrical and Electronic Equipment (WEEE) Directive
2011/65/EU Restriction of Hazardous Substances (RoHS) Directive
Supplementary Information:
This equipment complies with all the requirements for the CE Mark.
Signature: __
Date of issue: August 25, 2017
Mr. Alan Hutchinson
Regulatory Compliance Engineering Manager
Meyer Sound Laboratories Inc.
Berkeley, California 94702 USA
European Contact:
Your local Meyer Sound dealer, or
Meyer Sound Germany, GmbH.
Horresser Berg 4A, 56410 Montabaur, Germany
HMS OPERATING INSTRUCTIONS
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APPENDIX F: ASHBY LOUDSPEAKERS DECLARATIONS OF CONFORMITY
ASHBY-5C, ASHBY-8C FCC DECLARATION OF CONFORMITY PN: 01.260.001.09 Rev. A Date Aug. 25, 2017 page 1 of 1 ECO 24610V
FCC DECLARATION OF CONFORMITY
Trade Name: Meyer Sound Laboratories
Product Name: Powered Speaker Product
Model Numbers: Ashby-5C, Ashby-8C
These devices comply with Part 15 of the FCC Rules
Operation is subject to the following conditions:
The devices may not cause harmful interference, and
The devices must accept any interference received, including
interference that may cause undesired operation
RESPONSIBLE PARTY
Responsible Party's Name: Meyer Sound Laboratories
Address: 2832 San Pablo Ave, Berkeley CA. 94702, USA
Telephone: 510-486-1166
Signature:
Date: August 25,2017
Printed Name: Alan Hutchinson, Regulatory Compliance Engineering Manager
FCC Class A Notice
Note: This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Modifications not expressly approved by the manufacturer could void the user's authority to operate the
equipment under FCC rules.
ICES-003 Class A Notice - Avis NMB-003, Classe A
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numerique de la classe A est conforme a la norme NMB-003 du Canada.
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Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
+1 510 486.1166
www.meyersound.com
© 2017
Meyer Sound. All rights reserved.
Ashby Loudspeaker Operating Instructions
PN 05.260.005.01 A
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