Meridian America DSP33 User Manual
user guide
Meridian
DSP
33 Digital Loudspeaker System
Meridian DSP33 Digital
Loudspeaker System
User Guide
Preface
i
Sales and service in the UK
Meridian Audio Ltd
Stonehill
Stukeley Meadows
Cambs
PE18 6ED
England
Tel␣ ␣ (01480) 52144
Fax␣ ␣ (01480) 459934
World Wide Web
http://www.meridian-audio.com
Part no: DSP33
Sales and service in the USA
Meridian America Inc
3800 Camp Creek Parkway
Building 2400
Suite 122
Atlanta
GA 30331
Tel␣ ␣ (404) 344 7111
Fax␣ ␣ (404) 346 7111
Designed and
manufactured in the UK by
Digital Gramophone and Wireless Ltd
Stonehill
Stukeley Meadows
Cambs
PE18 6ED
England
Preface
ii
Copyright © 1999 Digital Gramophone and
Wireless Ltd.
Boothroyd|Stuart Meridian, Meridian,
Meridian Digital Theatre, Meridian
Lossless Packing, MHR, and MLP are
registered trademarks of Meridian
Audio Ltd.
MHR: This product incorporates copyright
protection technology covered by certain
patent applications and intellectual
property of Meridian Audio Ltd. This
technology is provided for the express
purpose of securely containing copyright
audio within the Meridian System only.
Reverse engineering or circumvention of
this protection is strictly prohibited.
This guide was produced by
Human-Computer Interface Ltd,
http://www.interface.co.uk
Contents
Introduction 1
Introduces the DSP33 Digital Loudspeaker
System, and gives guidelines and
suggested layouts to help you plan your
surround system.
The DSP33 Digital Loudspeaker
System ................................................... 2
Sample configurations ........................... 5
Specification and accessories ............... 7
Setting up the DSP33
Digital Loudspeaker
System 9
Describes how to unpack and install the
digital loudspeakers and explains how to
connect them to your equipment.
Unpacking .............................................. 10
Positioning the digital loudspeakers ...... 11
Connecting the loudspeakers ................ 13
Connecting the digital loudspeakers ..... 15
Using the DSP Digital
Loudspeaker System 19
Provides step-by-step instructions for
operating the digital loudspeakers in
compact systems with no other
preamplifier or control unit.
Selecting a source ................................. 20
Adjusting the volume ............................. 21
Adjusting the balance or phase ............. 22
Preface
iii
Configuring the DSP33
loudspeakers using a
computer 23
Describes how to configure the digital
loudspeakers using the Meridian
Configuration program.
Troubleshooting 35
Preface
iv
The Meridian Configuration program ..... 24
Running the Meridian Configuration
program ................................................. 25
Creating a new settings file.................... 27
Changing the setup options................... 29
Setting up sources ................................. 31
Completing the configuration ................ 34
Provides suggested solutions to typical
problems.
Troubleshooting ..................................... 36
Service and guarantee ........................... 39
Index ...................................................... 41
Introduction
The Meridian DSP33 Digital Loudspeaker System combines the latest
acoustic and drive unit technology with multiple built-in power amplifiers
and advanced high precision digital signal processing. The result is a
speaker that produces extremely high-quality sound from a compact
enclosure, and is ideal either as part of a stereo system or a full home
theatre.
For instructions on setting up the loudspeakers turn to the next chapter,
Setting up the DSP33 Digital Loudspeaker System. Once they have been
set up refer to Using DSP33 Digital Loudspeaker System, page 19, for
information about getting the best results from all your music and film
recordings.
Introduction
1
The DSP33 Digital Loudspeaker System
Introduction
The DSP33 Digital Loudspeaker System incorporates the result
of several years of research and development into innovative
technologies.
Digital Signal Processing
Digital Signal Processing, or DSP, is a technique pioneered by
Meridian in hi-fi products for achieving extremely accurate
reproduction of audio signals using high-precision mathematical
processing.
DSP allows sophisticated processing to be performed without
any of the cumulative noise or degradation that inevitably
occurs, even with high-quality analogue circuitry. In addition, the
signal improvement techniques incorporated in the DSP33
would be virtually impossible to implement in analogue circuitry.
The DSP33 takes advantage of DSP for several different
functions:
❍To remove timing variations from the incoming digital signals
(de-jittering).
❍To split the frequency band between the treble and bass
drivers (crossover).
❍To perform filtering or adjustment of the frequency response;
eg treble or bass.
❍To provide volume control to 48-bit precision.
❍To provide bass extension by boosting the bass at moderate
levels to take full advantage of the capabilities of the drive
units.
If you are using the DSP33 Digital Loudspeaker System with a
digital source, such as CD or DVD, the signals remain in digital
form until the last possible stage.
DSP33 drivers
Each DSP33 loudspeaker uses two parallel 125mm (5") bass
drive units. These incorporate a cast alloy chassis and a carbon
fibre cone, and have a very large magnet which provides
excellent drive and control. Combined with the Meridian’s active
bass extension technology, they provide surprisingly rich, deep
bass, quite unprecedented for this size of cabinet.
The treble unit is a very high quality 25mm (1") aluminium dome
with a Neodymium magnet and a protective grille. It is extremely
well matched to the woofer, and also tonally very compatible
with the other speakers in the Meridian range.
2
Power amplifiers
Mounting options
The speakers are driven by two high-power low-feedback power
amplifiers. The combination of idealised magnetic design,
careful star earthing, and very fast output devices give the
amplifiers extremely low noise, high detail, and fast bass.
The whole electronic assembly is supplied from a substantial
torroidal transformer feeding high-quality audiophile-grade
capacitors.
Cabinet
Each DSP33 loudspeaker is built around a precision
manufactured aluminium cabinet. The rigidity of this material,
combined with the built-in structural elements, gives incredibly
low levels of cabinet resonance, which is further reduced by
additional damping. This results in a cabinet of exceptionally low
colouration, giving the loudspeaker amazing mid-range
transparency.
The DSP33 is designed to be used either vertically or
horizontally mounted and uses fully shielded drive units so that it
can be placed above or below a television without interference.
If ordered as a centre it is supplied with a plinth, which can be
used to give rigid support and tilt the centre channel towards the
listener.
Meridian High Resolution (MHR)
The DSP33 Digital Loudspeaker System supports Meridian High
Resolution (MHR), to allow you to connect to other MHRcompliant Meridian products to take advantage of high-rate
audio sources, and provide the additional benefits of lower jitter
and improved sound quality on all sources.
MHR is a proprietary secure encoding format that uses
encryption and anti-copy methods to provide a secure copyright
protection environment, and allow the secure transfer of audio
streams within a Meridian-only system for playback only.
Introduction
3
Meridian Comms
The DSP33 Digital Loudspeaker System is part of the Meridian
family of advanced digital, analogue, and video components,
and these incorporate a sophisticated communications link, to
allow you to control any combination of units using a single
remote, and ensure that they will work together as a fully
integrated system.
The communications system also allows you to extend your hi-fi
system into two or three rooms, with the ability to control the
sources in one room from the controller in another room.
The following pages show two recommended configurations
based on the DSP33 Digital Loudspeaker System to illustrate
the flexibility of Meridian components.
Introduction
4
Sample configurations
Meridian Digital Compact Theatre™
DSP33 rear DSP33 rear
DSP33
Meridian DVD Player
Meridian Surround Processor
Five DSP33 loudspeakers can be used in conjunction with a
Meridian Surround Processor to create a compact surround
system with superb music and cinema sound.
DSP33DSP33
D1500
The DSP33 provides an unusually good response for such a
compact case, and can be mounted either horizontally or
vertically for total flexibility.
A Meridian D1500 Digital Subwoofer can be added for extended
bass performance.
Introduction
5
DSP33 Digital Loudspeaker System
Other applications
Introduction
6
DSP33DSP33
512
Meridian DVD Player
The DSP33 can be connected directly to almost any source that
provides a PCM SPDIF output, including CD or DVD players,
some PC soundcards, and digital satellite decoders. The DSP33
includes a DSP volume control, and with Meridian sources this
operates seamlessly via the 500 comms system.
Alternatively, the volume can be controlled with the Meridian
System Remote using the optional 512 Remote Eye, or via the
RS232 interface using the optional RS232 lead.
Other applications include:
❍High-quality multimedia PC speakers with RS232 control of
volume etc.
❍Surround speaker in a Meridian Digital Theatre (extra S5 lead
required).
❍Main speaker in a Digital Music System with a Meridian CD
Player (512 and D5 lead required).
❍Main speakers with another source of digital audio; eg satellite
(512, D5 lead and MSR required).
❍Second zone speaker in a Meridian two-room plus system
(long M5 lead, 512, D5 lead, and MSR required).
These applications may require additional accessories; for more
information see Available accessories, page 8.
Specification and accessories
Specification
Digital inputs 2 x cable, 75Ω, IEC958, 32-96kHz. FIFO
locks at 44.1, 48, 88.2, or 96kHz ±
150ppm.
1 x digital output cable, 75Ω, IEC958,
providing a copy of the selected input.
Processing 1 x Motorola 56364 running at 100MHz.
Power amplifiers Low feedback complementary bipolar
design, with output-stage error
correction and twin loop design.
Treble: 50W RMS.
Bass: 85W RMS.
Digital to analogue 24-bit Delta-Sigma.
conversion
Distortion Typically <0.01%, or <0.05% up
to full power at all frequencies.
Noise and hum <-95dBr at all volume settings.
Acoustic output Typically >104dB spl @ 1m.
Acoustic noise <15dB spl @ 1m.
Frequency response In room response within 3dB, 60Hz-
20kHz, lower at moderate volumes.
Crossover Linear-phase ±30º at 2.3kHz.
Drive units Woofers: 2 x 125mm (5") carbon fibre
custom drivers, cast alloy chassis.
Tweeter: 1 x 25mm (1") aluminium dome
neodymium magnet, with protective grille.
Control 2 x Meridian Comms.
9-pin D connector for RS232 PC setup
and control, null modem, 9600 baud,
2N1, no handshake.
Cabinet Extruded and cast aluminium with
bracing elements.
Dimensions 150mm x 395mm x 210mm
(5.9" x 15.6" x 8.3") (W x H x D).
Weight 9.5kg (21lb) each.
Power 100-125; 200-250V AC 50-60Hz.
6VA idle; 200VA max.
Meridian Audio reserves the right to amend product
specifications at any time.
Introduction
7
Available accessories
The DSP33 is shipped ready to be used as the front speakers in
a small Meridian Digital Theatre with a Meridian DVD Player
(such as the 800 or 580) or a Meridian Digital Surround
Controller (such as the 861, 568, or 561).
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.
❍512 Remote Eye for remote control reception.
❍D5 lead for connecting between the 512 and DSP33.
❍Additional S5 leads (8m and 14m).
❍511 S-patch box if connecting more than two DSP33s to a
561 Digital Surround Controller or 568 Digital Surround
Processor.
Introduction
8
Setting up the DSP33 Digital Loudspeaker System
This chapter explains how to install the DSP33 Digital Loudspeaker
System. It describes what you should find when you unpack the speakers,
how you should connect them to your other audio equipment, and the
siting constraints.
Before you begin installation you should ensure that your digital
loudspeaker system is the correct voltage for your local AC supply. If it is
not, do not try to install the unit, and contact your dealer.
You should not make any connections to the digital loudspeakers, or to
any other component in your system, while the AC power supply is
connected and switched on.
Setting up the DSP33 Digital Loudspeaker System
9
Unpacking
The digital loudspeaker system is supplied in a box containing
the following components:
❍DSP33 Loudspeaker(s) complete with grille.
❍Four self-adhesive feet per speaker.
❍This user guide.
❍Power cord suitable for your territory per speaker.
❍Meridian M5 lead.
❍Meridian S5 lead.
❍Meridian Configuration program.
❍RS232 cable.
❍R reset plug (see page 13).
❍Centre channel plinth (if ordered as a centre channel).
If any of these items is missing, please contact your dealer. We
suggest that you retain the packaging carefully, as it provides
maximum protection in transit.
Radio interference
FCC Warning: This equipment generates and can radiate radio
frequency energy and if not installed and used correctly in
accordance with our instructions may cause interference to
radio communications or radio and television reception. It has
been type-tested and complies with the limits set out in Subpart
J, Part 15 of FCC rules for a Class B computing device. These
limits are intended to provide reasonable protection against
such interference in home installations.
EEC: This product has been designed and type-tested to
comply with the limits set out in EN55013 and EN55020.
Setting up the DSP33 Digital Loudspeaker System
10
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