23425 MZ12 MZ8 MULTI ZONE POWER AMPLIFIER
Safety Guidelines Class II product CAUTION: To reduce the risk of electric shock, do not remove cover (or back). No user serviceable parts inside. Refer servicing to qualified service personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
Consignes de Sécurité Class II produit ATTENTION : afin de réduire les risques de choc électrique, n’ouvrez pas le boîtier de l’appareil. Les pièces internes ne sont pas réparables par l’utilisateur. Pour tout problème matériel, contactez des techniciens qualifiés. ATTENTION : afin de réduire les risques de choc électrique et d’incendie, veillez à ne pas exposer cet appareil à la pluie ou à l’humidité.
Welcome Thank you and congratulations for purchasing your Arcam MZ Amplifier. Contents Safety Guidelines....................................................... 2 Important safety instructions...................................................2 Safety compliance........................................................................2 Consignes de Sécurité.............................................. 3 Instructions de sécurité importantes....................................
Overview Placing the unit Standby power Place the amplifier on a level, firm surface, avoiding direct sunlight and sources of heat or damp. Alternatively, the unit can be installed in a 19” equipment rack using the rack ears supplied. Attach the rack ears to the sides of the MZ amplifier using the supplied bolts, as shown in the diagram below. The front panel power switch powers all circuitry down. The unit may be put into low-power standby operation using RS232 control or the trigger input.
Z1L Z1R TRIM Z1 R _ + R L R L _ + Z6 Z5 AUDIO IN + CLASS 2 WIRING _ R L R Z6 Z6 INPUT Z1 Z6 R TRIM Z6L Z6R R L + _ + _ Z3L Z3R TRIM R R R L Z3 INPUT Z1 Z3 Z3 _ + Z3 Z4 AUDIO IN + CLASS 2 WIRING _ R L R Connect an RS232 remote controller here RS232 Connection Z4 Z4 INPUT Z1 Z4 R Zone 3 & 4 each have inputs, trims and input selection controls as described for Zone 2.
Speakers Speaker Installation The MZ12 amplifier allows the connection of up to twelve independent loudspeaker channels, arranged in six stereo zones. The MZ8 amplifier provides eight channels in four zones. Each zone is designed to provide amplification to one room of a multi-room installation; further options allow for greater flexibility when installing multiple loudspeaker pairs in a large space.
Bi-amping Bi-amping is the separation of the amplification of low- and highfrequency signals over two amplifiers. You will need to connect to loudspeakers that provide separate terminals for the two cables. Each speaker must have two pairs of terminals; one pair labelled HF For ‘High Frequency’, the other pair labelled LF or ‘Low Frequency’.
Operation Zone operation Each channel of each zone has a trim control. This recessed control allows each speaker’s volume to be adjusted using a small flat blade or cross-head screwdriver and is ideal for compensating for differences in sensitivity between different speaker types. For everyday volume adjustment, it is recommended to connect source equipment with an adjustable output such as the Arcam C31 preamplifier or Solo Music system. Each zone (except Zone 1) has an input switch.
Front panel indicators Troubleshooting The front panel Zone Status LEDs indicate the status of each of the amplifier zones: If you are having trouble with your amplifier, check the following items: • • • • Red - standby Amber - zone muted Green - zone on Flashing Red - over temperature RS232 remote control The Arcam MZ amplifiers may be remote controlled using an RS232 data connection. The communication protocol is described from page 13 onwards.
Specifications Continual improvement policy Arcam has a policy of continual improvement for its products. This means that designs and specifications are subject to change without notice. Continuous power output (1kHz at 0.1% THD) Single zone, both channels, 8Ω Single channel, 4Ω Harmonic distortion, 80% power, 8Ω at 1kHz Power output, all zones all channels driven, 8Ω at 1kHz, 0.1% THD+N 80W rms 116W rms 0.
RS232 Control Introduction This document describes the remote control protocol for controlling the MZ8/12 via the RS232 interface. The document relates to MZ RS232 control protocol version 1.0. Any updates to this protocol will be posted on the Arcam Extranet website at http://www.arcam.co.uk/extranet.
Zone numbers The following zone numbers are defined: 0x01 - Zone number 1. (Zone 1 is the master zone. Commands that are global are addressed to Zone 1) 0x02 - Zone number 2. 0x03 - Zone number 3. 0x04 – Zone number 4. 0x05 – Zone number 5. 0x06 – Zone number 6. Answer codes The following answer codes are defined: 0x00 – Status update. 0x82 – Zone Invalid. 0x83 – Command not recognised. 0x84 – Parameter not recognised. 0x85 – Command invalid at this time. 0x86 – Invalid data length.
System Command Specifications Software version (0x04) Request the version number of the main software or the control protocol of the MZ8/MZ12. Example Command/response sequence to request the RS232 protocol version (1.
Activate/deactivate the mute lines (0x1F) Activate/deactivate the mute lines on the designated zone. Example Command/response sequence to activate the mute relays: Command: 0x21 0x01 0x1F 0x01 0x0D Response: 0x21 0x01 0x1F 0x00 0x01 0x0D COMMAND: Byte: Description: St 0x21 Zn Zone number Cc 0x1F Data1 0x00 – Deactivate mute line 0x01 – Activate mute line Dl 0x01 Et 0x0D RESPONSE: Report Amplifer temperature status (0x27) Report the temperature status of the various zones amplifiers.
23425 SH216E Issue 2 A&R Cambridge Ltd, Pembroke Avenue, Waterbeach, CAMBRIDGE CB25 9QR, England
