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ADORN
Commercial Series
User Guide
V1.1
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ADORN USER GUIDE
Contents
ADORN On-wall Introduction
ADORN On-wall 4
Aesthetics 4
Options 4
Protection 4
Unpacking the Unit 4
ADORN On-wall Overview
A40/A40T 5
A55/A55T 5
Accessories 6
ADORN On-wall System Requirements
Low Impedance Systems 7
70v and 100v Line Systems 7
Connections 7
ADORN On-wall Deployment
Wall-mounting 8
Ceiling-mounting 9
ADORN Ceiling Introduction
ADORN Ceiling 11
Aesthetics 11
Options 11
Protection 11
Unpacking the Unit 11
ADORN Ceiling Overview
ACS-40TS 12
ACS-55TS 12
ACS-55T 12
ACP-55T 12
Accessories 13
ADORN Ceiling System Requirements
Low Impedance Systems 14
70v and 100v Line Systems 14
Connections 14
ADORN USER GUIDE V1.1
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ADORN USER GUIDE
ADORN Ceiling Deployment
Hole Cut-outs 15
Suspended Ceilings 15
ADORN Pendant Deployment
ACP-55T 18
Technical Specications
A40/A40T 19
A55/A55T 19
ACS-40TS 20
ACS-55TS 20
ACS-55T 20
ACP-55T 21
Technical Drawings
A40 22
A40T 23
A55 24
A55T 25
ACS-40TS 26
ACS-55TS 27
ACS-55T 28
ACP-55T 29
Warranty
Warranty Statement 30
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ADORN USER GUIDE
ADORN On-wall Introduction
ADORN On-wall
Thank you for purchasing a Martin Audio ADORN series system. ADORN was launched to meet the demand for ultra-compact, discreet,
easy to deploy speaker for a wide range of commercial integration projects, meeting the price point often demanded whilst still delivering
superior sound quality and the signature Martin Audio tonal characteristics. ADORN is an ideal partner to larger Martin Audio systems in
venues that may have a wide variety of zones, to provide a seamless transition and retaining the same sonic performance and tonal quality.
Aesthetics
The ADORN on-wall series have been designed to be as visually unobtrusive with bezel-free grilles for a clean look. All models are available
in black (RAL 9005) and white (RAL 9016).
Options
The A40T and A55T are fitted with a 70v and 100v line transformers to select the appropriate output power. There is also a low impedance
mode on all models (16Ω), enabling up to 8 speakers to be driven by a single amplifier channel with 2Ω load capability.
Protection
All models have built-in independent protection for the high and low frequency drivers to ensure reliable operation in the event of an
overload condition.
Unpacking the Unit
Every Martin Audio loudspeaker is built to the highest standard and thoroughly inspected before it leaves the factory. After unpacking the
system, examine it carefully for any signs of transit damage and inform your dealer if any is found. It is suggested that you keep the original
packaging so that the system can be repacked at a future date if necessary.
When the product has reached the end of its useful life, please dispose of it responsibly through a recycling centre.
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ADORN On-wall Overview
ADORN USER GUIDE
A40/A40T
The A40 is a two-way passive speaker with an elegant design that is perfect
for architectural interiors that require high-fidelity sound from an unobtrusive,
ultra-compact enclosure. Comprising a 4” (100mm) LF driver and a 0.75”
(19mm) silk-dome HF driver on a 110° x 80° horn, it handles 40W AES, 160W
peak and can produce 109dB peak output at 1 metre.
It is available as standard in either black or white and its paintable ABS
enclosure can be wall-mounted vertically or horizontally using the mounting
bracket supplied. With a nominal impedance of 16 ohms, multiple speakers
can be driven in parallel from a single channel of a low impedance amplifier
such as the Martin Audio VIA2004.
The A40T transformer option features a built-in 70vV/100v multi-tap
transformer for line operation.
The enclosure is suitable for outdoor usage when used with the waterproof
connector cover accessory (sold separately).
A55/A55T
The A55 features a 5.25” (135mm) LF driver and a 0.75” (19mm) silk-dome
HF driver on a 110° x 80° horn. With a power handling of 50W AES, 200W
peak, and a maximum SPL of 113dB at 1 metre, it is designed for background
and foreground applications that call for premium sound quality and high levels
from a visually discreet enclosure.
It is available as standard in either black or white and its paintable ABS
enclosure can be wall-mounted vertically or horizontally using the mounting
bracket supplied and its nominal impedance of 16 ohms enables multiple
speakers to be driven in parallel from a single channel of a low impedance
amplifier such as the Martin Audio VIA2004.
A transformer option, the A55T, with a built-in 70vV/100v multi-tap transformer
is available for line operation.
The enclosure is suitable for outdoor usage when used with the waterproof
connector cover accessory (sold separately).
Subwoofers
For full range music systems, a subwoofer may be added. We would recommend
a speaker from the Martin Audio SX Series such as the SX110 which is a
very compact single 10” subwoofer. This must be driven by another amplifier,
for small low impedance systems the four channel VIA2504 or VIA5004
amplifiers are recommended. A system controller will be required to act as a
crossover between the subwoofer and ADORN speakers. The DX0.5 or DX4.0
are recommended processors.
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ADORN USER GUIDE
Accessories
AIPKIT - Weatherised connector cover
The cover is fitted to the rear of any of the wall-mount systems. It allows cable entry via a sealed gland to provide a weather resistant
connection to enable the speakers to be used outdoors. Available in black (AIPKIT) and white (AIPKIT-W). Suitable for use with all ADORN
on-wall models. Sold seperately.
ASM10002 / ASM10001 - Wall bracket
Allows wall-mounting of all ADORN models, featuring vertical and horizontal tilt and pan. Weatherised for outoor installation. Available in
black (ASM10002) and white (ASM10001). Suitable for use with all ADORN on-wall models. Supplied with product.
CDDCB5 - Ceiling bracket
Allows ceiling-mounting of all ADORN models, featuring vertical tilt. Weatherised for outoor installation. Available in black (CDDCB5BWR), white (CDDCB5W-WR) and custom RAL colours. Suitable for use with all ADORN on-wall models. Sold seperately.
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ADORN On-wall System Requirements
Low Impedance Systems
The ADORN A40 and A55 are designed to be used in a low impedance system.
The selector switch is located on the rear of the speaker on wall-mount models A40T and A55T and is on the baffle behind the grill on the
ceiling and pendant products. A conventional power amplifier or mixer-amplifier designed for use with low impedance loads must be used.
We recommend an amplifier that can deliver the full peak power rating without risk of clipping to ensure the best possible performance and
to avoid damage. The Martin Audio VIA amplifier range are a good match for the ADORN series. Performance can be further maintained
by using a good quality system processor to introduce a system protection limiter. The Martin Audio DX0.5 is recommended for use with
the ADORN series.
70v and 100v Line Systems
An amplifier designed for driving distributed line system must be used. The appropriate tap must be selected using the rotary switch,
located on the back of A40T and A55T.
Ensure that the sum of all speaker taps does not exceed the amplifier’s rated power output.
A40T
70v: 20w / 10w / 5w / 2.5w
100v: 20w / 10w / 5w / n/a
A55T
70v: 30w / 15w / 7.5w / 3.75w
100v: 30w / 15w / 7.5w
Connections
Connections are made to all ADORN on-wall speakers using simple spring-loaded push terminals.
Strip approximately 10mm of insulation from the ends of your speaker cables, twist stranded cable or use crimped bootlace ferrule on the
ends. Depress the push lever, insert the cables into the hole and release the lever. Positive, (+) connections should be made to the red
terminal, Negative, (-) connections should go to the black terminal. If “daisy-chaining” connections to several speakers, either twist two
wires together prior to inserting in the terminal or insert two wires together.
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ADORN On-wall Deployment
Wall-mounting
The ADORN on-wall loudspeakers are supplied with a bracket to ensure trouble free installation. The bracket is a three-part design which
allows adjustment in both horizontal and vertical planes.
The first stage is to disassemble the bracket so that the cabinet half can be fitted to the speaker and the wall section attached to the wall.
A 4mm Allen key is required. If adjustment is only required in one plane, vertical or horizontal, the middle section can be removed. This
has the added advantage that the speaker will be closer to the wall.
Fit the wall bracket in the appropriate orientation for horizontal or vertical adjustment. Fixings appropriate for the wall surface and weight
of the cabinet must be used to ensure a safe and secure installation.
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ADORN USER GUIDE
Fit the cabinet half of the bracket to the speaker using the four screws in the centre of the rear of the cabinet.
The cabinet can be fitted to the wall by linking the two halves of the bracket using the M4 Allen head bolt.
Ceiling-mounting
An alternative option is to ceiling mount the ADORN on-wall speakers using the optional ceiling bracket, part number CDDCB5.
Fit the cabinet half of the bracket to the speaker using the four screws in the centre of the rear of the cabinet. For ceiling installation, the
bracket must be installed in the orientation below:
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ADORN USER GUIDE
Fit the wall part of the bracket to the ceiling bracket (CDDCB5) with the fastenings supplied.
Connect the two assemblies together using the M6 x 60 supplied with we wall bracket. This configuration will give you tilt adjust only.
If “pan & tilt” adjustment is needed repeat the above process with the pan and tilt coupler included.
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ADORN USER GUIDE
ADORN Ceiling Introduction
ADORN Ceiling
Thank you for purchasing a Martin Audio ADORN series system. ADORN was launched to meet the demand for ultra-compact, discreet,
easy to deploy speaker for a wide range of commercial integration projects, meeting the price point often demanded whilst still delivering
superior sound quality and the signature Martin Audio tonal characteristics. ADORN is an ideal partner to larger Martin Audio systems in
venues that may have a wide variety of zones, to provide a seamless transition and retaining the same sonic performance and tonal quality.
Aesthetics
The ADORN ceiling series have been designed to be as visually unobtrusive with bezel-free grilles for a clean look. All ceiling models are
available in (RAL 9016) white. Pendant models are available in (RAL 9005) black and (RAL 9016) white.
Options
All models are fitted with a 70v/100v multi-tap line transformer to select the appropriate output power. There is also a low impedance mode
(16Ω, enabling up to 8 speakers to be driven by a single amplifier channel with 2Ω load capability.
Protection
All models have built-in independent protection for the high and low frequency drivers to ensure reliable operation in the event of an
overload condition.
Unpacking the Unit
Every Martin Audio loudspeaker is built to the highest standard and thoroughly inspected before it leaves the factory. After unpacking the
system, examine it carefully for any signs of transit damage and inform your dealer if any is found. It is suggested that you keep the original
packaging so that the system can be repacked at a future date if necessary.
When the product has reached the end of its useful life, please dispose of it responsibly through a recycling centre.
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ADORN Ceiling Overview
ACS-40TS
Comprising a 4” (100mm) LF driver and a 0.75” (19mm) silk-dome tweeter,
the ACS-40TS produces 108dB peak output at 1 metre and has a high-fidelity
sonic character ideal for both music and speech reproduction. Its ported design
delivers strong bass that extends down to 73 Hz.
The very wide 180° conical coverage of the ACS-40TS makes it particularly
suitable for low ceilings and reduces the number of speakers required for even
coverage — leading to a reduction in installation cost. It features a shallow
back can for installation in ceilings with a minimum cavity depth.
ACS-55TS
Comprising a 5.25” (100mm) LF driver and a 0.75” (19mm) silk-dome tweeter,
the ACS-55TS produces 113dB peak output at 1 metre and has a high-fidelity
sonic character ideal for both music and speech reproduction. Its ported design
delivers strong bass that extends down to 79Hz.
The wide 150° conical coverage of the ACS-55TS makes it particularly suitable
for low ceilings and reduces the number of speakers required for even coverage
— leading to a reduction in installation cost. It features a shallow back can for
installation in ceilings with a minimum cavity depth.
ADORN USER GUIDE
ACS-55T
Comprising a 5.25” (100mm) LF driver and a 0.75” (19mm) silk-dome
tweeter, the ACS-55T produces 113dB peak output at 1 metre and has a highfidelity sonic character ideal for both music and speech reproduction. Its ported
bass reflex design and back can with generous internal volume maximises low
frequency output and delivers strong bass that extends down to 62Hz.
The wide 150° conical coverage of the ACS-55T reduces the number of speakers
required for even coverage — leading to a reduction in installation cost.
ACP-55T
Comprising a 5.25” (100mm) LF driver and a 0.75” (19mm) silk-dome tweeter,
the ACP-55T produces 109dB peak output at 1 metre and delivers superb
sound quality for both music and speech reproduction. Its stylish pendant
enclosure is equipped with a single-point mounting system plus provision for
attaching a safety cable.
The consistent and wide 150° conical coverage of the ACP-55T reduces the
number of speakers required for even coverage — leading to a reduction in
installation cost.
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Accessories
C bracket
Appropriately sized support ring for ACS-40TS, ACS-55TS and ACS-55T. Supplied with product.
Tile rails
Support rails for suspended ceiling. Supplied with product.
ADORN USER GUIDE
CK3
3m suspension cable accessory for ACP-55T and ACP-55T-W. Sold seperately.
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ADORN Ceiling System Requirements
Low Impedance Systems
All models can be used in a low impedance system by selecting the 16Ω position on the rotary switch, located behind the grille. A
conventional power amplifier designed for use with low impedance loads must be used. We recommend an amplifier that can deliver
the full peak power rating without risk of clipping to ensure the best possible performance and to avoid damage. The Martin Audio VIA
amplifier range are a good match for the ADORN series. Performance can be further maintained by using a good quality system processor
to introduce a system protection limiter. The Martin Audio DX0.5 is recommended for use with the ADORN series.
70v and 100v Line Systems
All ceiling and pendant models can be used in a 70v or 100v line system. An amplifier designed for driving distributed line system must
be used. The appropriate tap (please see below) must be selected using the rotary switch located on the front baffle of ceiling and pendant
models.
Ensure that the sum of all speaker taps does not exceed the amplifier’s rated power output.
ACS-40TS
70v: 20w / 10w / 5w / 2.5w
100v: 20w / 10w / 5w / n/a
ACS-55T(S) & ACP-55T
70v: 30w / 15w / 7.5w / 3.75w
100v: 30w / 15w / 7.5w
Connections
All models feature a connection cover for safety critical applications, it provides strain relief to the cable connections which helps prevent
accidental disconnection. Strip approximately 10mm of insulation from the ends of your speaker cables, twist stranded cable or use
crimped bootlace ferrules on the ends. Loosen the four screws – this will allow the connection cover to be removed without completely
removing the screws. Pass the cable through the gland from outside to in. The cables connect to the speaker via a ceramic terminal block.
Connections are as follows:
1. +
2. –
3. –
4. +
The positive (+) and negative (–) from your in-coming cable can connect to 1 & 2 and your link-out cable to 3 & 4. Connections to the
ceramic terminal block are loosened and tightened using a cross head screwdriver.
Replace the connector cover ensuring that there is no strain on the connections, tighten the gland to seal the connection.
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ADORN Ceiling Deployment
Hole Cut-outs
ADORN ACS-40TS 197mm (7.75”) diameter
ADORN ACS-55TS, ACS-55T 222mm (8.74”) diameter
Hole cut-out templates are supplied with each speaker.
Suspended Ceilings
The tile rails and C bracket are intended to be used with suspended/false ceilings.
First, remove the ceiling tile and cut the required hole in the centre of the tile.
ADORN USER GUIDE
Place the tie rails either side of the hole orientate as shown ensuring that the ends align with the edge of the tile.
Place the C-bracket in position over the hole with the clips hooked over the rails. Make sure the bracket is aligned accurately with the hole.
Screw the C-Bracket in place with the screws provided screwing from the hole side through to the rails. This will make it easier to access
the screws if any adjustment is required one the tile and supporting brackets are in the ceiling.
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The bracket assembly can now be placed in the ceiling. The ends of the tile rail can be easily be re-shaped to fit onto the supporting
frame for the ceiling. These simply hook on top of the ceiling frame; they are not fixed in position. The tile can now be replaced. This will
inevitably mean lifting one side of the bracket, ensure that once the tile is back in position the frame is sitting on the ceiling frame and that
the C-Bracket is accurately lined up with the hole. If necessary, reach through the hole and loosen the fixing screws holding the C-Bracket
to the rails, make any adjustments to the position and tighten the screws.
Fitting the ceiling speakers
Once a suitable hole has been prepared the ceiling speakers can be fitted. First pull the cabling down through the hole, it is important that
there is enough slack on the cable to allow easy connection of the cables to the speaker. Connect the cable as described in the Connections
chapter. Fit a safety wire to the tab and ensure this is firmly attached to a fixing point independent of the ceiling structure.
The ceiling speakers are held in position with swivel tabs which are at right angles to the final fixing position to allow placing the speaker
in the hole, these then rotate 90° as the fixing screws are tightened to hold the speaker securely in place. Before inserting the speaker into
the ceiling, ensure that all swivel tabs are rotated so they are parallel with the edge of the bezel to allow easy insertion up into the ceiling.
The connector cover sticks out at the side of the back can , this is to keep the depth of the speaker to a minimum to ensure that the
speakers are suitable for shallow voids above ceilings.
To fit the speaker, you will need to guide the connector cover and cables into the hole first and then raise the speaker into position flush
in the hole.
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If a quantity of ceiling speakers are deployed in a line (corridor) the tweeter should be orientated so that an imaginary line between the
woofer and tweeter points along the line of speakers. This will minimise phase issues at the crossover point that are inevitable in a 2-way
speaker.
The ceiling speakers are secured by tightening the mounting screws from the front baffle. The ACS-40TS has three mounting screws, the
ACS-55TS and ACS-55T have four. Tighten these clockwise, the swivel tables will rotate 90° and will then pull down onto the back of the
tile to hold the speaker securely in place. A recommended torque setting of 0.5Nm and no more than 1Nm should be used to avoid over
tightening.
Fitting the grille
The grille is a simple bayonet fitting. Locate the lugs on the underside of the grille and position on the ceiling speaker. Rotate approximately
5° and it will be fixed in place. It can be removed by rotating anticlockwise should any maintenance or adjustment be required.
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ADORN Pendant Deployment
ACP-55T
The ACP-55T is designed to be suspended in free space from a single point. The mounting tab on the top of the enclosure is used to attach
the speaker to the means of suspension, wire rope or similar. The fixings used to attach the speaker must be rated for flown applications
and have a safe working load that exceeds the weight of the ACP-55T.
Fitting the grille
The grille can be fitted before suspending the ACP-55T if the required electrical configuration is known; - low impedance or the specific
70v and 100v line tap. The grille is a simple bayonet fitting. Locate the lugs on the underside of the grille and position on the ceiling
speaker. Rotate approximately 5° and it will be fixed in place. It can be removed by rotating anticlockwise should any maintenance or
adjustment be required.
Important safety information
• Martin Audio ADORN ceiling speakers must be installed by experienced installation personnel using all accessories appropriate to the
ceiling construction
• The installer must check with all relevant local, national and international electrical, fire and building safety authorities to ensure that
all regulations are being complied with
• Every ADORN ceiling speaker must be fitted with a steel safety wire between its rear can safety tag and a suitable overhead supporting
structure independent of the ceiling to provide secondary safety support in the event of damage to the ceiling
• When installed in an air handling space the steel cover plates must be sealed to the loudspeaker back cans with firestop putty or a
suitable alternative to ensure plenum tight enclosure of the electrical connections.
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Technical Specications
A40/A40T
TYPE Ultra-compact passive two-way system,
front ported bass reflex
FREQUENCY RESPONSE (1) 98Hz-17kHz ± 3dB
-10dB @ 70Hz
DRIVERS LF: 4” /1” high-temp voice coil, coated paper cone,
rubber surround, ferrite motor, pressed steel chassis
HF: 0.75” silk dome, neodymium motor
RATED POWER (2) 40W AES, 160W peak
RECOMMENDED AMPLIFIER A40: VIA2004
A40T: VIA5002
SENSITIVITY (1) 87dB/1W/1m
MAXIMUM SPL (9) 109dB peak
NOMINAL IMPEDANCE 16 ohms
DISPERSION (-6dB) 110° H x 80° V
CROSSOVER 3.5kHz passive (LF and HF auto-resetting fuses)
TRANSFORMER TAPS (A40T only) 70V: 20w / 10w / 5w / 2.5w
100V: 20w / 10w / 5w
RECOMMENDED HIGH-PASS FILTER 60Hz 24dB/oct
ENCLOSURE ABS, UL 94V-0 rated
FINISH Black or white
GRILLE Perforated steel
CONNECTORS Push terminals
FITTINGS Wall bracket included
DIMENSIONS EXCL. BRACKET (W) 124mm x (H) 200mm x (D) 114mm
(W) 4.9in x (H) 7.9in x (D) 4.5in
WEIGHT A40: 1.75kg (3.9lbs)
A40T: 2.13kg (4.7lbs)
ACCESSORIES Waterproof connector cover
ADORN USER GUIDE
A55/A55T
TYPE Ultra-compact passive two-way system,
front ported bass reflex
FREQUENCY RESPONSE (1) 90Hz-17kHz ± 3dB
-10dB @ 65Hz
DRIVERS LF: 5.25” /1” high-temp voice coil, coated paper
cone, rubber surround, ferrite motor, pressed steel chassis
HF: 0.75” silk dome, neodymium motor
RATED POWER (2) 50W AES, 200W peak
RECOMMENDED AMPLIFIER A55: VIA2004
A55T: VIA5002
SENSITIVITY (1) 90dB/1W/1m
MAXIMUM SPL (9) 113dB peak
NOMINAL IMPEDANCE 16 ohms
DISPERSION (-6dB) 110° H x 80° V
CROSSOVER 3.5kHz passive (LF and HF auto-resetting fuses)
TRANSFORMER TAPS (A55T only) 70V: 30w / 15w / 7.5w / 3.75w
100V: 30w / 15w / 7.5w
RECOMMENDED HIGH-PASS FILTER 60Hz 24dB/oct
ENCLOSURE ABS, UL 94V-0 rated
FINISH Black or white
GRILLE Perforated steel
CONNECTORS Push terminals
FITTINGS Wall bracket included
DIMENSIONS EXCL. BRACKET (W) 152mm x (H) 245mm x (D) 140mm
(W) 6in x (H) 9.6in x (D) 5.5in
WEIGHT A55: 2.21kg (4.9lbs)
A55T: 2.81kg (6.2lbs)
ACCESSORIES Waterproof connector cover
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ACS-40TS
TYPE Ultra-compact, passive two-way ceiling speaker, ported bass reflex
FREQUENCY RESPONSE (1) 106Hz-20kHz ± 3dB, -10dB @ 73Hz
DRIVERS LF: 4” /1” high-temp voice coil, coated paper cone, rubber
surround, ferrite motor, pressed steel chassis
HF: 0.75” silk dome, neodymium motor
RATED POWER (2) 40W AES, 160W peak
RECOMMENDED AMPLIFIER VIA2004 (for low-impedance operation)
SENSITIVITY (4) 86dB / 1W(4V) / 1m
MAXIMUM SPL (9) 108dB peak
NOMINAL IMPEDANCE 16 ohms
DISPERSION (-6dB) 180° conical up to 10kHz
CROSSOVER 3.5 kHz passive (LF and HF auto-resetting fuses)
TRANSFORMER TAPS 70V: 20w / 10w / 5w / 2.5w, 100V: 20w / 10w / 5w
RECOMMENDED HIGH-PASS FILTER 75Hz 24dB/oct
ENCLOSURE UL 94V-0 rated ABS baffle with steel backcan
FINISH Baffle and grille: RAL9016 white, Backcan: zinc plated
GRILLE Perforated steel, powder-coated, bayonet fitting
CONNECTORS Ceramic connector (in and link) located behind fire-retardant steel cover
ACCESSORIES (included) 2 tile rails, C-ring backing plate, Cut-out template
DIMENSIONS (OD) 221mm x (D) 98mm
(OD) 8.7in x (D) 3.9in
WEIGHT 2.2kg (4.8lbs)
ACS-55TS
ADORN USER GUIDE
TYPE Compact, passive two-way ceiling speaker, ported bass reflex
FREQUENCY RESPONSE (1) 117Hz-20kHz ± 3dB, -10dB @ 79Hz
DRIVERS LF: 5.25” /1” high-temp voice coil, coated paper cone,
rubber surround, ferrite motor, pressed steel chassis
HF: 0.75” silk dome, neodymium motor
RATED POWER (2) 50W AES, 200W peak
RECOMMENDED AMPLIFIER VIA2004 (for low-impedance operation)
SENSITIVITY (4) 90dB / 1W(4V) / 1m
MAXIMUM SPL (9) 113dB peak
NOMINAL IMPEDANCE 16 ohms
DISPERSION (-6dB) 150° conical up to 7kHz
CROSSOVER 3kHz passive (LF and HF auto-resetting fuses)
TRANSFORMER TAPS 70V: 30w / 15w / 7.5w / 3.75w, 100V: 30w / 15w / 7.5w
RECOMMENDED HIGH-PASS FILTER 65Hz 24dB/oct
ENCLOSURE UL 94V-0 rated ABS baffle with steel backcan
FINISH Baffle and grille: RAL9016 white, Backcan: zinc plated
GRILLE Perforated steel, powder-coated, bayonet fitting
CONNECTORS Ceramic connector (in and link) located behind
fire-retardant steel cover
ACCESSORIES (included) 2 tile rails, C-ring backing plate, Cut-out template
DIMENSIONS (OD) 245mm x (D) 102mm
(OD) 9.7in x (D) 4in
WEIGHT 2.8kg (6.2lbs)
ACS-55T
TYPE Compact, passive two-way ceiling speaker, ported bass reflex
FREQUENCY RESPONSE (1) 98Hz-20kHz ± 3dB, -10dB @ 62Hz
DRIVERS LF: 5.25” /1” high-temp voice coil, coated paper cone,
rubber surround, ferrite motor, pressed steel chassis
HF: 0.75” silk dome, neodymium motor
RATED POWER (2) 50W AES, 200W peak
RECOMMENDED AMPLIFIER VIA2004 (for low-impedance operation)
SENSITIVITY (4) 90dB / 1W(4V) / 1m
MAXIMUM SPL (9) 113dB peak
NOMINAL IMPEDANCE 16 ohms
DISPERSION (-6dB) 150° conical up to 7kHz
CROSSOVER 3kHz passive (LF and HF auto-resetting fuses)
TRANSFORMER TAPS 70V: 30w / 15w / 7.5w / 3.75w, 100V: 30w / 15w / 7.5w
RECOMMENDED HIGH-PASS FILTER 65Hz 24dB/oct
ENCLOSURE UL 94V-0 rated ABS baffle with steel backcan
FINISH Baffle and grille: RAL9016 white, Backcan: zinc plated
GRILLE Perforated steel, powder-coated, bayonet fitting
CONNECTORS Ceramic connector (in and link) located behind fire-retardant steel cover
ACCESSORIES (included) 2 tile rails, C-ring backing plate, Cut-out template
DIMENSIONS (OD) 245mm x (D) 193mm
(OD) 9.7in x (D) 7.6in
WEIGHT 3kg (6.6lbs)
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ACP-55T
TYPE Passive two-way pendant speaker, ported bass reflex
FREQUENCY RESPONSE (6) 98Hz-20kHz ± 3dB
-10dB @ 56Hz
DRIVERS LF: 5.25” /1” high-temp voice coil, coated paper cone,
rubber surround, ferrite motor, pressed steel chassis
HF: 0.75” silk dome, neodymium motor
RATED POWER (2) 50W AES, 200W peak
RECOMMENDED AMPLIFIER VIA2004 (for low-impedance operation)
SENSITIVITY (7) 86dB / 1W(4V) / 1m (full space)
MAXIMUM SPL (9) 109dB Peak
NOMINAL IMPEDANCE 16 ohms
DISPERSION (-6dB) 150° conical up to 7kHz
CROSSOVER 3kHz passive (LF and HF auto-resetting fuses)
TRANSFORMER TAPS 70V: 30w / 15w / 7.5w / 3.75w
100V: 30w / 15w / 7.5w
RECOMMENDED HIGH-PASS FILTER 65Hz 24dB/oct
ENCLOSURE UL 94V-0 rated ABS baffle and enclosure
FINISH Black or white
GRILLE Perforated steel, powder-coated, bayonet fitting
CONNECTORS Ceramic connector (in and link)
DIMENSIONS (OD) 246mm x (D) 157 mm (175mm including grille)
(OD) 9.7in x (D) 6.2in (6.9in including grille)
WEIGHT 3.46kg (7.62lbs)
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Notes
(1) Measured on-axis in half (2pi) space at 2 metres, then referred
to 1 metre.
(2) AES Standard ANSI S4.26-1984.
(3) Measured in half (2pi) space at 2 metres with 1 watt input,
using band limited pink noise, then referred to 1 metre.
(4) Measured in half (2pi) space at 2 metres using band limited
pink noise, then referred to 1 metre.
(5) Measured on-axis in open (4pi) space at 2 metres, then referred
to 1 metre.
(6) Measured in open (4pi) space at 2 metres with 1 watt input,
using band limited pink noise, then referred to 1 metre.
(7) Measured in open (4pi) space at 2 metres using band limited
pink noise, then referred to 1 metre.
(8) Measured in open (4pi) space at 2 metres with 2.83v input,
using band limited pink noise, then referred to 1 metre.
(9) Calculated at 1 metre.
(10) Measured in half (2pi) space at 2 metres with 2.83V input,
using band limited pink noise, then referred to 1 metre.
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Technical Drawings
A40
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A40T
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A55
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A55T
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ACS-40TS
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ACS-55TS
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ACS-55T
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ACP-55T
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Warranty
Warranty Statement
Martin Audio ADORN series loudspeakers are warranted against manufacturing defects in materials or craftsmanship over a period of 5
years from the date of original purchase. During the warranty period Martin Audio will, at its discretion, either repair or replace products
which prove to be defective provided that the product is returned in its original packaging, shipping prepaid, to an authorised Martin Audio
service agent or distributor. Martin Audio Ltd. cannot be held responsible for defects caused by unauthorised modifications, improper use,
negligence, exposure to inclement weather conditions, act of God or accident, or any use of this product that is not in accordance with
the instructions provided by Martin Audio. Martin Audio is not liable for consequential damages. This warranty is exclusive, and no other
warranty is expressed or implied. This warranty does not affect your statutory rights.
COPYRIGHT AND TRADEMARKS
Copyright Martin Audio Ltd. Martin Audio and ADORN series are trademarks of Martin Audio Ltd and are registered in the United Kingdom,
United States and other countries. All other trademarks and trade names are the property of their respective owners.
2020 © Martin Audio Limited. All rights reserved.
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Martin Audio Limited
Century Point
Halifax Road
Cressex Business Park
High Wycombe
Buckinghamshire
HP12 3SL
England
FOR SALES ENQUIRIES:
UK
Telephone: +44 (0)1494 535312
E-mail: info@martin-audio.com
NORTH AMERICA
Telephone: 323-381-5310
www.martin-audio.com
All information is Copyright © 2021 Martin Audio Ltd.
Martin Audio, the Martin Audio logo and Hybrid are registered trademarks of Martin Audio Ltd. in the United Kingdom, United States
and other countries; all other Martin Audio trademarks are the property of Martin Audio Ltd.
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