Meridian America DSP420 - Manual (Page 3)

Introduction
The DSP420 Digital In-Wall Loudspeaker System
uses high technology digital signal processing to
remove the compromises previously associated
with in-wall speakers, allowing them to achieve
the same clear open sound and wide frequency
response as traditional free-standing speakers.
The M420 Analogue In-Wall Loudspeaker System
employs a similar design to the DSP model, but
instead of digital inputs provides a line level
analogue audio input.
DSP420 or M420 loudspeakers are ideal as part
of a home theatre system, or as the basis for a
compact stereo system where the loudspeakers
need to be hidden or unobtrusive.
Available accessories
The DSP420 is shipped ready to be used as a
speaker in a small Meridian Digital Theatre with
a Meridian optical disc player such as the 800 or
G98, or a Meridian Digital Surround Controller
such as the 861 or G68. The M420 may be
attached to a controller or preamplifier with
analogue outputs at line level.
Other applications, and some advanced features,
may require one or more of the following
accessories, which can be purchased from your
Meridian dealer:
• Meridian System Remote Plus.
• G12 Remote Eye for infrared remote control
reception.
Indicator lights: (*DSP420 only)
The following table explains the function of the
indicator lights on the front panel:
Light State
What it means
Red On Power supplied to speaker.
Flashing Speaker is being reset, or
speaker has overheated and
has shut down.
*Green On Speaker is locked to a digital
input.
Off Speaker is in standby.
Note: The indicator lights are blanked if the
Meridian system displays have been blanked.
Configuration: DSP420
The DSP420 can be configured either with a
PC, using the Meridian graphic configuration
program or via RS232 commands. The use of
the configuration application is described in
its manual, which can be downloaded, along
with the latest version of the program, from the
Meridian web site, www.meridian-audio.com.
RS232 control: DSP420
The primary RS232 command to which the
DSP420 responds is the Position command, which
adjusts the loudspeaker parameters according
to its position in the room. Send the command
PO followed by 0 (default), 1 or 2. 0 sets the
loudspeaker for the tweeter at ear level. Use 1 if
the speaker is near the ceiling and 2 if it is in a
corner. The complete list of RS232 commands is
available from the Meridian web site.
To reset the configuration of the DSP420
The following procedure can be used to reset the
configuration of the DSP420 loudspeaker to the
default settings, without needing a computer,
using the reset switch accessible below the front
panel.
• Turn off the power at the front panel.
• Press and hold in the reset switch, using a
suitable object such as a bent paperclip or the
grille removal tool.
• Turn on the power. The red power indicator on
the front panel will flash. When the indicator
stops flashing:
• Release the reset switch.
Troubleshooting
This section provides suggested solutions to
typical problems that may occur when setting
up the M420 and DSP420 loudspeaker(s). If you
are still not able to resolve a difficulty with the
DSP420
Digital Signal Processing
In-Wall Loudspeaker System
M420
Analogue Active In-Wall
Loudspeaker System
INSTALLATION & OPERATION