Meridian America DSP420 사용자 설명서

Background
In-wall loudspeakers are not a new invention. 
Indeed they have been employed for many years 
by installers who wish to provide an unobtrusive 
audio solution to customers who have been 
unwilling or unable to install conventional free-
standing loudspeakers.

However, the design restraints generally imposed 
on an in-wall design – limited space and thus 
limited enclosure volume, physical limitations on 
materials and other restrictions – have meant 
that in-walls have traditionally offered a level of 
quality and performance that has lagged some 
distance behind their free-standing counterparts. 

Meridian’s DSP420 breaks that mould with 
an in-wall loudspeaker that is a cut above the 
rest. Inside each unit, Meridian’s unique high 
technology digital signal processing is used to 
free the sound from the walls: the result is clear 
and open with a wide response, very much in 
line with the performance of Meridian’s smaller 
free-standing DSP-based loudspeaker models, 

and with a similar character, enabling in-wall and 
free-standing speakers to be combined in a single 
system as required.

As a result, the DSP420 has become one of 
Meridian’s most popular loudspeakers. Following 
its success, and in response to customer 
demand, an active analogue variant, the M420, 
is now available, with the same bass drivers 
and power amplifiers as the DSP version. In 
addition, the back-box available for both units 
has been redesigned to permit easier and quicker 
installation, including BNC connectors on the 
digital version and XLRs on the analogue.

Truly Active In-Walls
The DSP420 and M420 are truly active in-wall 
speakers with separate internal amplification 
for high and low frequency bands. Rated 
at 65 and 85 Watts respectively and using 
carefully selected bipolar output devices, the 
idealised low feedback designs are based on 
those used in other Meridian loudspeakers to 
deliver exceptionally fast bass response and 

Digital Signal Processing
In-Wall Loudspeaker System

Analogue Active In-Wall  
Loudspeaker System