User manual PROCEED HPA3

[. . . ] HPA 3 Power Amplifier 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. [. . . ] They provide twoway communication with the home automation controller as to the amplifier's current status, ensuring reliable execution of sophisticated turnon and shutdown macros. To use these ports, simply daisy chain the various Proceed products together. The modular cable needed for the connection may be purchased from your Proceed dealer. It may also be easily and inexpensively made to length using two modular connectors and the appropriate length (up to 100 feet/30 meters) of flat, eight conductor cable. Modular cables and connectors are used throughout the world for both telecommunications and computers, and are widely available at low cost. The connectors are crimped on to the ends of the cable such that pin 1 at one end is connected to pin 1 at the other end. Such a "straight-through" connection is (counter-intuitively) made by introducing a 180° twist in the cable between the two ends, as shown below. communication cable from Proceed PDSD or AVP To HPA 3 Power Amplifier Locking tab Locking tab 3 REMOTE TURN-ON ("TRIGGER') JACKS Two 1/8" "mini" jacks above the AC mains receptacle on the rear panel allows remote-controlled turn-on (that is, toggling between operate and standby) of the Proceed amplifier. These remote "triggers" will be operated by the presence of 5­12 volts DC, with tip polarity as shown below: Remote turn-on tip polarity ­ + 5-12 volts, positive tip polarity The presence of a suitable DC voltage will cause the amplifier to be fully on; the absence of such a voltage will cause it to enter standby. Your Proceed dealer can help you take advantage of these design features to maximize your system's versatility. Since these trigger inputs are wired in parallel, you can go into one and out of the other to facilitate a "daisy-chain" of turn-on triggers (should you have additional products that need to be controlled in this manner). 14 Note: If the DC trigger input is used to control the amplifier(s), the last mini-jack in the chain must be filled with a dummy 1/8" plug [that is, an empty plug must be inserted into the final 1/8" [3. 5 mm] jack]. Even if only a single amplifier is controlled in this fashion, the "extra" mini-jack must be filled with a dummy plug. If you are not using these turn-on inputs, you may leave them both empty of any plugs. 4 BALANCED AUDIO INPUTS Accepts 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 amplifier. If not, wire the cables so that the appropriate output pin connects to the equivalent input pin. If you are planning to use balanced connections between your preamplifier and any particular channel of the amplifier, select the balanced input by sliding the input select switch (see Item 5, below) toward the XLR input. Then connect the balanced outputs of your preamplifier to the corresponding balanced inputs on the amplifier using high quality cables such as CZ Gel-1. 5 INPUT SELECT SWITCH This small switch is found between the balanced XLR input and the singleended RCA input on each channel of the amplifier. The input select switch disables the unselected input in order to avoid any pickup of stray noise from what would otherwise be 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 amplifier 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 surround decoder's output calibration circuitry. 15 6 SINGLE-ENDED INPUTS Accepts signals from preamp/controllers with single-ended outputs via high quality RCA connectors. If you are planning to use single-ended connections between your preamplifier and any particular channel of the amplifier, select the single-ended input by sliding the input select switch (see Item 5) toward the RCA input. Then connect the single-ended outputs of your preamplifier to the corresponding single-ended inputs on the amplifier, using high quality cable such as CZ Gel-2. 7 SPEAKER OUTPUTS & BINDING POSTS This Proceed amplifier is equipped with gold-plated, high-current binding posts for output termination to a loudspeaker system. To take full advantage of the amplifier's sonic quality, we recommend using high-quality speaker cable; see your Proceed dealer. Caution! NEVER connect the amplifier output terminals to any device other than a loudspeaker. [. . . ] If your Proceed component must be serviced, please contact your dealer. Your dealer will then decide whether the problem can be remedied locally, or whether to contact Madrigal for further service information or parts, or to obtain a Return Authorization. The Madrigal Technical Services Department works closely with your dealer to solve your service needs expediently. Important! Return authorization must be obtained from Madrigal's Technical Services Department BEFORE a unit is shipped for service. It is extremely important that information about a problem be explicit and complete. A specific, comprehensive description of the problem helps your dealer and the Madrigal Technical Services Department locate and repair the difficulty as quickly as possible. 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