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DSP420
Digital Signal Processing
In-Wall Loudspeaker System
INSTALLATION & OPERATION
Audio wiring instructions
First remove the cover labelled audio connections.
DSP420
AC11
A remote IR connection can be optionally
accommodated from a remote sensor such as a
Meridian G12 or 512, which can be wired to a
master speaker as follows: Red to +8V, blue to IR
and screen GND.
Connecting a pair of DSP420s as a stereo system
Outline Specifications
Inputs:
Enclosure: Aluminium front baffle with sealed,
Meridian SpeakerLink (RJ45) input &
output providing balanced digital
Meridian Comms and Power.
mechanically damped and insulated
acoustic enclosure. Baffle finished in
textured black enamel.
Grille finished in easy-to-paint white
powder coat, backed by acoustically-
transparent scrim. White moulded
custom paintable frame.
Acoustics: 2-way Infinite Baffle enclosure.
2x 127mm high-efficiency long-throw
custom bass drivers,
1x Meridian 25mm tweeter with
aluminium
Response: 55Hz – 20kHz ±3dB.
Amplification: Internal 85W woofer, 65W tweeter.
6VA (quiescent) – 200VA (full output).
DSP (DSP420): 100MHz Motorola 56364, Linear Phase
Crossover, 96kHz, 24-bit DAC.
Controls & Indicators: Front baffle controls for power
and channel selection.
LED indicators for power, lock and
thermal warning.
Approx. Dimensions: Frame 450mm (17.72in) square,
depth 102mm (4.02in) Hole cutout 357
x 388mm (14.10 x 15.28in) Note: dimen-
sions are approximate. See installation
drawings for detailed information. The
DSP420 is designed to fit standard 16in
stud centres.
Approx. Weight: 8.5 kg (18.7 lb) main unit without frame,
grille or connection boxes.
Mounting: Easy-install frame with fire-retardant
power and audio connection boxes. Tem -
plates provided for both new construc-
tion and installation into existing walls.
Meridian America Inc
8055 Troon Circle Suite C,
Austell, Atlanta
GA 30168-7849, USA
T +1 (404) 344 7111 F +1 (404) 346 7111
Meridian Audio Limited
Latham Road,
Huntingdon,
Cambridgeshire PE29 6YE, UK
T +44 (0) 1480 445678 F +44 (0) 1480 445686
www.meridian-audio.com
P81524
RJ45 Lead
To equipment
Slave Speaker Master Speaker
Set to Master
Set to Slave
Input Output Input Output
+8V
GND
IR
GND
+8V
GND
IR
GND
DSP420
IN
IN
IN
IN
IN
IN
IN
DSP420
DSP420
Master
DSP420
DSP420
DSP420
DSP420
A = Centre
B = L/R Front
C = L/R Sides
D = L/R Surr
861
Example installation: 861 Surround controller with seven DSP420
Key
Digital Audio
Meridian Comms (BNC or DIN)
SpeakerLink RJ45