User manual MYRYAD POWERAMP

[. . . ] MX SERIES Modular Power Amplifier Owner's Manual CONTENTS · Introduction · Installation and Safety · Power Inlet · Smart My-Link® Input/output · Remote Trigger Control Input/Output, · Rear Panel Diagrams · Line Input · Line Output · Loudspeaker Output · Front Panel Controls · Standby Ellipse · Loudspeaker Output Protection and Muting · Fault Condition Indication · Trouble-Shooting Guide · Table of MX Power Amplifier Model Number · Specifications · Power Rating Table 2 2 3 3 INTRODUCTION The Myryad MX Modular Power Amplifier has been designed to provide a flexible solution to a wide range of power amplifier requirements. As a two-channel unit it can be partnered with the Myryad MXP2000 stereo preamplifier (or other high quality preamp) to deliver audiophile quality stereo. In multi-channel form it can be used to provide power for high quality Home Cinema or music surround systems when partnered by a suitable surround preamplifier-processor such as Myryad's MXD6000. It can also be used in install situations as a high-quality multi-channel distribution amplifier. [. . . ] The lead must be wired according to the rules below: Remote Trigger Control Details Connector to MX power amplifier REMOTE TRIGGER input: Jack plug wiring: Trigger voltage: Nominal loading of MX power amplifier REMOTE TRIGGER input: Operation: TRIGGER voltage change from 0 to +ve: TRIGGER voltage change from +ve to 0: 3. 5mm mini-jack plug sleeve negative, tip positive DC, 4. 5V to 24V 2200 Ohms MX power amplifier switched from standby to active MX power amplifier switched from active to standby directly to the input. Using this output, further MX power amplifiers, or other products, may be connected from a single trigger source without needing any special adaptors. IF YOU ARE IN ANY DOUBT ABOUT MEETING ANY OF THESE CRITERIA, OR PREPARING A SUITABLE LEAD, ASK YOUR DEALER OR INSTALLER TO HANDLE THIS FOR YOU. Note: If the TRIGGER input is active when the rear panel POWER switch is turned ON, then the amplifier will not power up into standby mode as usual. It will power up immediately into its "active" state - with its normal power-on mute delay (see FRONT PANEL CONTROLS, STANDBY below). The REMOTE TRIGGER output is wired 1 x 150W AND 2 x 80W AMPLIFIER MODULES Each MX Power Amplifier is supplied fitted with two or more amplifier channels, made up from a combination of 1 x 150W and 2 x 80W amplifier modules. The single and dual channel modules both interface in exactly the same way. The text below therefore refers to a single channel and applies equally to a 1 x 150W module or either channel of a 2 x 80W module. Additional amplifier modules, up to the maximum of seven, can be fitted into the MX power amplifier, or existing modules can be exchanged for the alternative type (1x150W or 2x80W), at any time. Modules must only be fitted or exchanged by qualified service personnel. Consult your Myryad dealer for details 1. Line input The line input can be driven from the line outputs of any good quality processor or preamplifier (such as the Myryad MXD6000 or MXP2000) or any other suitable line level source. High quality RCA-to-RCA (phonoto-phono) interconnects should be used. Line output The line output is directly connected to its line input - without buffering. The line output allows power amplifiers to be "daisychained" so that more complex multi-room or multi-amplifier systems may be built. Speaker output Each channel is capable of driving any loudspeaker with a rated impedance of 4 ohms or greater. The loudspeaker terminals are high-current binding-posts, coded red and black. CAUTION: THE RED TERMINALS ARE MARKED WITH A HAZARD SYMBOL TO INDICATE THAT THEY CAN BE LIVE, READ ALL THE LOUDSPEAKER WIRING INSTRUCTIONS CAREFULLY. IT IS RECOMMENDED THAT READY-MADE LEADS BE USED WHERE POSSIBLE. For correct imaging it is important that all the loudspeakers used in a single room are wired "in phase". To ensure correct phasing wire the black (-) terminal on the amplifier to the black or "-" terminal on the loudspeaker. The red (+) terminal on the amplifier should be wired to the red or "+" terminal on the loudspeaker. 1 3 2 2 x 80W Module 1 3 2 1 x 150W Module 4 USING YOUR MXA 1 FRONT PANEL CONTROLS then all seven LEDs will light blue. Standby When the amplifier is plugged into a live wall socket and the POWER switch is turned ON, it will power up in "standby" mode and the central standby LED (Light Emitting Diode) in the display window will glow red. [. . . ] If the problem persists return unit to approved Service Agent. 1 "Overheat" Amplifier channel has overheated 2 "Short-circuit" Loudspeaker wiring short-circuited, or very low impedance loudspeaker connected, or too many loudspeakers wired in parallel to one amplifier channel Switch amplifier POWER off at rear. Check that load on each channel is no less than 4 (one 4 speaker or two 8 speakers to each channel). Check loudspeaker wiring ­ at both amplifier and speaker ends. Make sure there are no small strands of wire that might be causing a short circuit. [. . . ]