Meridian DSP5500HC User manual

Background
Today’s multichannel music and film soundtracks demand more performance
from a centre channel than ever before. High performance centre-channel
loudspeakers must have frequency, phase and sonic characteristics that
closely match your mainspeakers. When matched correctly, the resulting
surround sound or enhanced stereo presentation will be natural. New higher
resolution multichannel formats mean that correct choice of a centre speaker is
even more critical. By designing our systems with music reproduction foremost
in our minds, Meridian has once again anticipated your needs with the
DSP5500HC, matching the performance of its vertical counterparts.
Meridian DSP5500HC
The DSP5500HC is constructed with steel panels sandwiched between the
rigid inner cabinet and the veneered outer panels on four sides. The two
200mm bass drivers are housed in separate internal enclosures. A third
internal enclosure houses the tweeter and midrange. As a result the acoustic
cabinet is extremely rigid, giving thebenefits of extension, clarity and dynamic
range unheard of in conventional centre channels.
Meridian also included innovative DSP technology to compensate for boundary
and corner use. This is a centre speaker that can be installed in almost any
environment with confidence.
The DSP5500HC has been designed to work coherently with the Meridian
DSP5500, DSP6000 and DSP8000 loudspeakers.
Technical Specification
Performance: Frequency response in-room within 3dB from 35Hz to over
20kHz.
Maximum output >111dB spl @ 1m on music material
Noise less than 15dB spl.
Overall distortion typically <0.02% at any frequency or level.
Inputs: Two digital inputs to SPDIF standard; 32kHz–96kHz sampling
rates at up to 24 bit; MHR support. (A future software update
will enable support for 192kHz.)
Construction: 3-way acoustic reflex system.
2 x 200mm long-throw bass drivers.
1 x 160mm polypropylene mid driver in separate enclosure.
1 x 25mm aluminium-dome tweeter, silver wire, short horn-
loaded with protective grille.
Cabinet constructed from high-density MDF. Integral magnetic
shielding and user-changeable real wood veneer acoustic
damping side panels.
FIFO memory buffer input for the lowest possible jitter from
almost any source.
Four precision 128x oversampling converters for bass, mid
and tweeter signals.
Analogue gain and filtering using proprietary Meridian Class-A
discrete amplification.
Digital and conversion electronics constructed using
advanced surface-mount techniques and partitioned 6-layer
printed-circuit boards.
Four 75W power amplifiers, one for each of the drivers.
DSP5500HC
DSP Centre-channel Loudspeaker
Sales information
1st December 2001
•Three-way active loudspeaker
with DSP crossover
•Self-contained audio system, each
comprising four custom drivers,
four amplifiers, three digital
converters, digital crossovers
and advanced sound-shaping DSP
computers
•Remote controlled and requiring
no unsightly speaker cables
•Listener control over features
including bass, treble tilt,
listening axis, volume, time-
compensated balance and
absolute phase
•Magnetic shielding with heavy
steel prevents disturbing TVs
•Maximum output level up to 111dB
spl
Meridian Audio Limited
Stonehill, Stukeley Meadows
Huntingdon
Cambridgeshire PE29 6EX
T [phone]
F [phone]
Meridian America Inc.
Suite 122, Building 2400
3800 Camp Creek Parkway
Atlanta GA 30331
T [phone]
F [phone]
www.meridian-audio.com

Power amplifiers use a unique feedback topology and
precision local error-correction systems to achieve a
performance equivalent to the conversion system.
Dimensions: 1100mm (43.3in) W, 285 (11.2) H, 415 (16.3) D
Weight 81kg (179lb)
DSP: 100MHz Motorola digital signal processor.
Digital crossover at 200Hz and 2.6kHz.
Response correction for the whole system.
User tone, volume and phase controls.
Controls: Rear-panel controls for power On/Off. MSR and RS232 port
provide controlover bass, treble tilt, listening axis, volume,
time-compensated balance and absolute phase.
Front display: Eight-character display with system lights, can be blank.
Diagram of Cabinet Construction
Added to this inner cabinet are four steel sheets and four veneered panels for
increased rigidity.
Bass Enclosure
Bass Enclosure
Enclosure for
Tweeter and Mid
Low Frequency Port Low Frequency Port
Isolated Electronics Enclosure
DSP5500HC
DSP Centre-channel Loudspeaker
Sales information
1st December 2001
Meridian Audio Limited
Stonehill, Stukeley Meadows
Huntingdon
Cambridgeshire PE29 6EX
T [phone]
F [phone]
Meridian America Inc.
Suite 122, Building 2400
3800 Camp Creek Parkway
Atlanta GA 30331
T [phone]
F [phone]
www.meridian-audio.com