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Meridian Audio Limited
meridian-audio.com
Product highlights
Ultra-narrow (200mm) design
delivers full DSP loudspeaker
performance in-wall
Back-box and frame system allows
simple and easy installation, with
the flexibility to ensure precise
positioning
Loudspeaker array is built into selfcontained enclosure that mounts
into back-box
DSP-based design delivers
superior performance to
conventional designs – equivalent
to an enclosure of eight times the
physical volume.
Features 140mm bass and 85mm
wide-range drivers based on the
M6, for full-frequency response
Two full-range models plus a subwoofer for maximum flexibility
All aspects of the design including
baffle and grille have been
developed for maximum dispersion
and listening area plus minimum
unwanted diffraction
Perfect partner for stand-alone
Meridian DSP loudspeakers, with
complementary sound
Grille may be painted to match
interiors
DSP In-Wall Loudspeakers
DSP520, DSP640 & DSW500
Meridian has introduced a new range
of DSP-based in-wall loudspeakers.
The first to be released is the DSP520
full-range loudspeaker, followed by the
larger DSP640 and a matching subwoofer, the DSW500.
Increasingly, home theatre installations
in particular call for in-wall designs,
and Meridian’s existing DSP inwall model, the DSP420, has been
one of the company’s most popular
loudspeaker since its introduction.
The sonic inspiration for the in-walls was
development work on the unique M6
loudspeaker released in early 2012. This
tall, conical loudspeaker features a 140mm
bass driver and an 85mm wide-range driver,
and the same drivers are used in different
combinations in the current in-wall systems,
giving them impressive performance on many
levels, including superior mechanical integrity,
increased bass and reduced upper mid-range
colouration.
The range has been launched with the
DSP520, featuring a single wide-range driver
and single bass driver. The larger DSP640
unit includes dual bass and full-range drivers,
while the DSW500 subwoofer includes twin
bass drivers.
The DSP In-wall range has been developed
specifically to deliver wide dispersion for
maximum listening area, with minimum
unwanted diffraction thanks to careful baffle
and grille design. The on-board DSP provides
thermal and dynamic bass protection with
very accurate transients, ensuring that when
the loudspeaker is played at high levels,
even over prolonged periods of time, the
loudspeakers always deliver a clean, detailed
and accurate sound.
Exploded rendering of the DSP520. The DSP640
includes two bass and two full-range drivers,
while the DSW500 includes dual bass drivers.
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DSP In-Wall Loudspeakers
DSP520, DSP640 & DSW500
Outline Specifications
Inputs
• 2x Meridian SpeakerLink connector (RJ45)
Outputs
• Meridian SpeakerLink connector (RJ45)
Drivers
• 85mm wide-range & 140mm bass
• DSP520: one of each; DSP640: two of each;
DSW500: dual bass drivers
Amplification
• 1x 100W Class AB amplifier per wide-range
driver
• 1x 150W Class D amplifier per bass driver
Construction
• All-metal construction throughout, consisting
of back-box, mounting frame, aluminium
extruded baffle with rear enclosure and front
steel grille
Dimensions
• Visible grille on wall all models:
W x D: 222.5 (8.76) x 4.0 (0.16).
H DSP520: 820 (7.87) mm (in);
H DSP640: 1251.3mm (49.25in).
• For wall cutout and rough-in box dimensions,
see engineering drawings and installation
instructions
Front panel
• On/off rocker switch, Fuse holder, IR window
• Rocker switch selects left-centre-right
channel operation
• LED indicator shows power status
Power
• IEC mains connector included
in back-box connects to flying
lead attached to enclosure
E&OE. Specifications subject to change
without notice. Original measurements use
SI units. Dimensions should be confirmed
against the original device or dimensioned
engineering drawings.
DSPIW.DS-ENG v2.1 • REƒ • 20130107
Voicing compensation is included for
installation behind provided grille, or fabric
and screen material.
All three products in the current range
include powerful amplifiers, one for each
driver. A 100W Class AB amplifier powers
each wide-range driver, while a 150W Class
D amplifier powers the bass drivers. These
amplifiers have been designed to operate
comfortably and run perfectly cool, even at
the highest listening levels.
The use of a wide-range driver across the
speech band helps create a loudspeaker with
an effortless sound that remains clear, open
and spacious, even at high listening levels.
Meanwhile, the bass end is crossed over at
200Hz, just as in the flagship DSP8000,
with a full-scale high-resolution Meridian
DSP crossover. Meridian’s unique suite of
proprietary technologies provides a lifelike
sound at all volume levels. DSP processing
throughout delivers a level of performance
matching that of a conventional loudspeaker
of eight times the physical volume, while
an ‘apodising’ upsampling filter delivers
maximum digital audio quality.
The in-wall systems are built into a
completely integrated, narrow (total 200mm
wide) all-metal frame and ported enclosure
system, with carefully-calculated internal
volume to provide the required acoustic
characteristics for the drivers. This selfcontained enclosure mounts to a frame
which is in turn mounted into the rough-in
box, which is designed for mounting into
new-build partition and stud style wall. It can
alternatively be retrofitted into stud or brick/
stone-built walls.
The rough-in box provides a fireproof
enclosure that includes a box for power entry.
Power is brought into the box from above
or below and fed to an IEC connector inside
the power box that feeds the loudspeaker.
Signal inputs and outputs are brought
into the back box via grommets through
knockouts included in several locations
around the box. The loudspeaker assembly
includes two RJ45 SpeakerLink connectors,
one for input and one for output, allowing the
units to be wired home run or daisy-chain.
During the installation process, the rough-in
box may be mounted directly into the wall, for
example by attaching it directly to woodwork
or brickwork, or secured via mounting wings
that fix to the side of the rough-in box,
which give additional stability. It can also be
attached to the frame, whose return always
lies on the wall surface, clamping the entire
assembly in place.
The loudspeaker enclosure itself then
mounts on to the frame, and the perforated
steel grille attaches to rubberised magnets in
the aluminium extrusion that forms the front
panel of the loudspeaker enclosure.
The paintable magnetic grille also has
locating pins top and bottom that fit into
holes in the extrusion. All the elements –
rough-in box, frame, loudspeaker enclosure,
included scrim and grille – include room for
adjustment so that the entire assembly can
be fitted with precision into almost any type
of wall. See exploded illustrations overleaf and
below.
The loudspeakers can be mounted
horizontally or vertically, in a wall or ceiling.
The rough-in box kit includes a template to
determine mounting positions, plus a mask
to protect the box during plastering, etc,
ensuring simple, flexible and easy installation.
The drivers are mounted into the front
extrusion of the enclosure itself, while a
separate upper case holds the electronics,
consisting of DSP, digital audio converters
and amplification. A mounting position is
provided in the DSP520 and DSP640 for
the fitting of a Media Source 200 unit to the
rear of the enclosure enabling the simple
construction of a single zone for a Meridian
Digital Media System.
The front of the extrusion carries the on/
off rocker switch, fuse holder, an infra-red
receptor window and a three-way (LeftCentre-Right) channel selector rocker switch.
When switched to Centre, the loudspeaker
equalisation is optimised for horizontal centre
use. A LED indicator shows the loudspeaker
power status.
DSP520 DSW500 DSP640
DSP520
Digital Signal Processing Loudspeaker System
DSW500
Digital Signal Processing Loudspeaker System
DSP640
Digital Signal Processing Loudspeaker System
Right
Centre
Left
Fuse
~50-60Hz T5.0AH
250V for 100-230V~
CAUTION:
Disconnect supply before changing fuse.
Replace with same type fuse.
ATTENTION:
Débrancher avant de remplacer le fusible.
Utiliser un fusible de rechange
du même type.
On
Off
Right
Centre
Left
Fuse
~50-60Hz T5.0AH
250V for 100-230V~
CAUTION:
Disconnect supply before changing fuse.
Replace with same type fuse.
ATTENTION:
Débrancher avant de remplacer le fusible.
Utiliser un fusible de rechange
du même type.
On
Off
Right
Centre
Left
Fuse
~50-60Hz T5.0AH
250V for 100-230V~
CAUTION:
Disconnect supply before changing fuse.
Replace with same type fuse.
ATTENTION:
Débrancher avant de remplacer le fusible.
Utiliser un fusible de rechange
du même type.
On
Off
DSP640 (left) and DSW500 (right)
exploded renderings.
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