User manual MERIDIAN AUDIO D420

[. . . ] Meridian DSP420 In-Wall Loudspeaker u s e r g u id e Meridian DSP420 In-Wall Loudspeaker System User Guide Preface i Sales and service in the UK Meridian Audio Ltd Stonehill Stukeley Meadows Cambs PE29 6EX England Tel (01480) 445678 Fax (01480) 445686 World Wide Web http://www. meridian-audio. com Part no: DSP420 Copyright © 2003 Meridian Audio Ltd. Boothroyd|Stuart Meridian, Meridian, Preface 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 Meridian Audio Ltd Stonehill Stukeley Meadows Cambs PE29 6EX England 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. This guide was produced by Human-Computer Interface Ltd, http://www. interface. co. uk Reverse engineering or circumvention of this protection is strictly prohibited. Designed and manufactured in the UK by Meridian Digital Theatre, Meridian Lossless Packing, MHR, and MLP are registered trademarks of Meridian Audio Ltd. ii Important safety instructions Refer to installation sheet for wiring and other important safety instructions. [. . . ] Dimensions Typically <0. 01%, or <0. 05% up to full power at all frequencies. Frame 457mm (18") square x 89mm (3. 5"). The red power indicator on the front panel will flash. When the indicator stops flashing: Release the reset switch. Power switch 13 Unpacking the DSP420 loudspeakers Indicator lights The following table explains the function of the indicator lights on the front panel: Light Red State On Flashing Unpacking the DSP420 loudspeakers What it means Power supplied to speaker. Speaker is being reset, or speaker has overheated and has shut down. Green On Off Speaker is locked to a digital input. Speaker is in standby. Note: The indicator lights are blanked if the displays on the Meridian system have been blanked. 14 Using the DSP420 loudspeakers In systems with a Meridian preamplifier or control unit all of the functions of the DSP420, including volume, tilt, and bass, are operated via the controller. For more information refer to the user guide for the preamplifier or control unit, and you can ignore this chapter. Using the DSP420 loudspeakers However, the DSP420 In-Wall Loudspeaker System can also be connected directly to a digital source to create a complete, minimum system. This chapter provides step-by-step instructions for operating the digital loudspeakers in a system with no Meridian preamplifier or control unit. 15 Selecting a source When not playing, the digital loudspeakers should be left in the standby state. This ensures that the components of the loudspeakers operate at maximum efficiency from the moment you start. To select a source Press the appropriate source key on the remote; eg DVD. This will bring the digital loudspeakers out of standby. If there is a signal to the speakers the green indicator on each speaker will Using the DSP420 loudspeakers be illuminated. To switch to standby Press Off on the remote. The loudspeakers will switch to standby and the green indicator on each speaker will go off. 16 Adjusting the volume The digital loudspeakers adjust the volume in precise steps of 1dB, where 9dB is equivalent to doubling the loudness, and can be varied in the range 1 to 99dB. When you first connect power to the digital loudspeakers the volume is set to 65, which is similar to the midway position of the rotary volume control on a conventional preamplifier. To change the volume Press the red A or V keys on the remote. Using the DSP420 loudspeakers To mute the sound Press Mute on the remote. To restore the sound Press Mute again on the remote. Alternatively, the sound will be restored if you adjust the volume. 17 Adjusting the balance or phase The balance control of the DSP420 In-Wall Loudspeaker System uses digital signal processing to compensate for an off-centre listening position by delaying and diminishing the sound in one speaker, thus effectively shifting the speaker's image back. The phase function controls the absolute phase of the digital Press A on the remote. To change the phase To change the balance Press < or > on the remote. There are 20 settings in each direction. Using the DSP420 loudspeakers conversion. It can be used to compensate for signals that are out of phase, giving an unnatural-sounding bass. To reset the balance to the centre Press V on the remote. Note: Because the use of the balance control processes the digital signal, you may hear a slight clicking as the balance is adjusted. 18 Configuring the DSP420 loudspeakers using a computer The DSP420 In-Wall Loudspeaker System provides a range of configuration options, which you can change to suit your own preferences and the other equipment in your system. To configure the DSP420 In-Wall Loudspeaker System you connect the master loudspeaker to a PC, and then use the Meridian Configuration program to set the configuration you want. Configuring the DSP420 loudspeakers using a computer This chapter explains how to install the Meridian Configuration program, and then how to use it create your own configuration of the DSP420. 19 The Meridian Configuration program The Meridian Configuration program is a stand-alone Windowsbased application that lets you design your own configuration of Configuring the DSP420 loudspeakers using a computer Requirements To use the Meridian Configuration program you need: A computer running Windows 95 or later. A 100MHz or faster Pentium-class processor. A vacant 9-pin serial port assigned to one of COM1 to 4. The software requires a mouse or similar pointing device ­ it the DSP420 Digital Loudspeaker System to suit your own personal preferences and the particular configuration of equipment in your system. [. . . ] This determines the configuration of all digital loudspeakers in the system. There is radio interference The DSP420 is a digital audio and computing device which has been designed to very high standards of electromagnetic compatibility. If this equipment does cause or suffer from interference to/from radio or television reception then the following measures should be tried: Reorient the receiving aerial (or antenna) or route the antenna cable of the receiver as far as possible from the DSP420 and its cabling. Ensure that the receiver uses well-screened antenna cable. Relocate the receiver with respect to the DSP420. [. . . ]