User manual PROCEED AMP2

[. . . ] AMP 2 & AMP 3 Power Amplifiers PR O C E E D WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. REFER SERVICING TO QUALIFIED PERSONNEL. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Marking by the "CE" symbol (shown left) indicates compliance of this device with the EMC (Electromagnetic Compatibility) and LVD (Low Voltage Directive) standards of the European Community. The information contained in the manual is subject to change without notice. The most current version of this manual will be posted on our web site at http://www. madrigal. com. 2 Important Safety Instructions Please read all instructions and precautions carefully and completely before operating your Proceed power amplifier. 1. ALWAYS disconnect your entire system from the AC mains before connecting or disconnecting any cables, or when cleaning any component. This product is equipped with a three-conductor AC mains power cord which includes an earth ground connection. [. . . ] When the indicator light is glowing red, the unit is in standby (see 1 above). If the indicator light is completely off, the amplifier is not receiving power. Check your AC connections and the rearpanel AC fuse. 12 when viewed from the front remote turn-on mains fuse 100-120VAC: 8A 3AG fast acting 200-240VAC: 4A 3AG fast acting + outputs ­ + outputs ­ ~ ac mains PUSH input select PUSH input select 21 3 21 3 1 2 remote turn-on 3 4 when viewed from the front 5 (right) 67 when viewed from the front when viewed from the front when viewed from the front (right) channel 2 channel 1 (left) mains fuse 100-120VAC: 12A 3AB fast acting 200-240VAC: 6A 3AG fast acting + outputs ­ + outputs ­ channel 2 (center) + outputs ­ ~ ac mains PUSH input select PUSH input select PUSH input select 21 3 21 3 21 3 Rear Panel Caution! Turn the volume on your preamplifier all the way down before attempting to connect anything to your Proceed AMP 2 or AMP 3. 1 AC MAINS RECEPTACLE Connect the AC power cord (included in the accessory pack) to the I. E. C. standard AC receptacle on the rear panel of the AMP then to the AC mains , outlet. Warning! The Proceed AMP has been safety-tested and is designed for operation with a three-conductor power cord. Do not defeat the "third pin" or earth ground of the AC power cord. channel 3 channel 1 (left) 13 2 REMOTE TURN-ON JACK A 1/8" "mini" jack above the AC mains receptacle on the rear panel allows remote-controlled turn-on (that is, toggling between operate and standby) of the Proceed AMP This remote "trigger" will be operated by a . 3­12 volts DC positive-polarity pulse, of at least 100 milliseconds duration, with tip polarity as shown below: Remote turn-on tip polarity ­ + 3-12 volts for at least 100 mS Y our Proceed dealer can help you take advantage of these design features to maximize your system's versatility. 3 AC MAINS FUSE One fast-blow fuse is located on the rear panel of the AMP If it should be. AMP 2 8 amp 4 amp AMP 3 12 amp 6 amp 100V to 120VAC 200V to 240VAC Caution! ALWAYS remove the AC cord before removing the fuse! 4 SPEAKER BINDING POSTS The Proceed AMP is equipped with gold-plated, high-current binding posts for output termination to a loudspeaker system. To take full advantage of the AMP's sonic quality, we recommend using high-quality speaker cable; see your Proceed dealer. Caution! NEVER connect the Proceed AMP output terminals to any device other than a loudspeaker. NEVER connect the left-channel output terminals to the rightchannel output terminals. There are two recommended methods for connecting speaker cables to the Proceed AMP A high-quality spade lug or hook lug, soldered to the cable . (or crimped with extremely high pressure), is best. 14 Spade lug Hook lug Connect the left-channel + (positive or red) output post of the Proceed AMP to the + (positive or red) input terminal of the appropriate loudspeaker. Connect the left-channel ­ (negative or black) output post of the AMP to the ­ (negative or black) input terminal of the appropriate loudspeaker. Repeat this procedure for the remaining channel(s). 5 BALANCED AUDIO INPUTS Accepts right-channel and left-channel signals from preamplifiers with balanced outputs via high quality XLR connectors. The pin assignments of these XLR-type female input connectors are: PUSH 21 3 Pin 1: Signal ground Pin 2: Signal + (non-inverting) Pin 3: Signal ­ (inverting) Connector ground lug: chassis ground These pin assignments are consistent with the standards adopted by the Audio Engineering Society Refer to the operating manual of your balanced. output preamplifier to verify that the pin assignments of its output connectors correspond to your Proceed AMP If not, wire the cables so that the ap. If you are planning to use balanced connections between your preamplifier and any particular channel of the AMP select the balanced input by sliding , the input select switch (see Item 6, below) toward the XLR input. Then connect the balanced outputs of your preamplifier to the corresponding balanced inputs on the AMP . 6 INPUT SELECT SWITCH This small switch is found between the balanced XLR input and the singleended RCA input on each channel of the AMP Use it to select which of the . The input select switch disables the unselected input in order to avoid any pickup of stray noise from an open input. It also causes the effective gain of that channel to be adjusted (either 23 dB balanced or 29 dB single-ended, to compensate for the 6 dB difference in signal level in these two connection standards). Should you use your AMP in a home theater system, this adjustment allows you to use any combination of balanced and single-ended connections without having to worry about going outside the adjustment range of your DolbyTM Pro LogicTM decoder's output calibration circuitry. 15 7 SINGLE-ENDED INPUTS These RCA connectors accept single-ended inputs from preamplifiers with single-ended (RCA) outputs. Connect the left-channel single-ended outputs of your preamplifier to the left-channel single-ended input on the AMP Repeat for the remaining . channel(s). 16 Bridged Operation Y our Proceed amplifier has been designed to be extremely versatile. Should your needs change or grow over time, you may wish to add additional power by one of two means: Bridging, or Biamping. We will discuss bridged operation first. Bridging Explained Bridging refers to the act of reconfiguring the circuitry in both the left and right channels of your amplifier to act as though it were a single, much larger amplifier. [. . . ] Some states do not allow limitations on how long an implied warranty lasts and other states do not allow the exclusion or limitation of incidental or consequential damages, so that the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. and Canada, please contact your local, authorized Proceed distributor for warranty and service information. 25 Obtaining Service We take great pride in our dealers. Experience, dedication, and integrity make these professionals ideally suited to assist with our customers' service needs. [. . . ]