PR O C E E D HPA 3 Power Amplifier
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. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
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. 2. This product is equipped with a three-conductor AC mains power cord which includes an earth ground connection. To prevent shock hazard, all three connections must ALWAYS be used.
From all of us at Madrigal Audio Laboratories, thank you for choosing this Proceed power amplifier. A great deal of effort went into the design and construction of this precision device. Used properly, it will give you many years of enjoyment.
Table of Contents Unpacking and Placement ........................................................................ 6 Unpacking .......................................................................................................... 6 Placement .......................................................................................................... 6 Ventilation ........................................................................................................... 6 Operating Voltage ................
Unpacking and Placement Unpacking Unpack your Proceed® HPA 3 Power Amplifier and keep all packing materials for future transport. Shipment of the amplifier without the original packing material is not recommended, as it is heavy enough to make improvised packaging impractical. Locate and remove all accessory items from the cartons, and store the cartons for possible future use. Carefully inspect the product for shipping damage. If you discover any, see your Proceed dealer immediately.
Operating Voltage This Proceed amplifier is factory-set for 100V, 120V, 220V, or 240V AC mains operation at either 50 or 60 Hz, according to the country for which the unit was manufactured. (230V in European Union countries, in compliance with CE regulations.) Make sure that the label on the rear panel of the amplifier indicates the correct AC operating voltage for your location. The operating voltage cannot be changed by the user, and any attempt to do so will void the warranty.
A Quick Start We recognize that many people are understandably eager to begin listening to their new components, and that reading the manual is often done (if at all) at a later time—perhaps while listening to music through the new product itself. We strongly recommend that you read this manual thoroughly. Fortunately, we can help you get some music up and running on your system quickly, so that you may begin enjoying your new amplifier while reading more about it.
7 SLOWLY RAISE THE VOLUME ON YOUR PREAMPLIFIER Congratulations! You should now be able to enjoy your favorite music while reading the rest of this manual. (Please, do read the rest of this manual. It contains much valuable information about your new amplifier which we could not possibly fit onto these two pages.
Special Design Features Congratulations on your purchase of a Proceed amplifier! While your new amplifier is straightforward in its use, it includes several design features which are responsible for its outstanding performance. A few of these are given below. Triple monaural design Low impedance power supply 10 Consistent with the finest amplifiers, each audio channel of your Proceed HPA 3 has its own, dedicated power supply—including a separate 663 VA toroidal transformer for each channel.
2 triple monaural amplifier standby HPA 3 power 1 Front Panel 1 POWER BUTTON Pressing this latching power button connects the amplifier to the AC mains, charges the power supply (which takes about five seconds), and places it in standby. Having a true standby function keeps the sensitive voltage gain stages warmed up and sounding their best at all times. Power consumption when in standby is less than 125 watts.
Note that pressing the standby button has no effect until after the power supply is fully charged. Note also that if the amplifier has been disconnected from the AC mains power by depressing the front panel power button, it cannot respond to a remote turn-on command from a control unit. 3 INDICATOR LIGHTS The power indicator light (above the small power button, below the large standby button) is normally either on or off, indicating whether AC power is being supplied to the amplifier.
PR O C E E D R HPA 3 power amplifier by MADRIGAL AUDIO LABS made in u. s. a. PUSH PUSH PUSH right 5 6 outputs 4 input select input select right 1 2 3 outputs outputs input select communication ports outputs trigger inputs ~ac mains right 7 Rear Panel Caution! Turn the volume on your controller/preamplifier all the way down before attempting to connect anything to your Proceed HPA 3 Power Amplifier.
These two RJ-45 communications ports also support the PHAST™ intercomponent communications protocols, greatly simplifying the design and installation of sophisticated home automation systems. 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.
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.
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.
Bridged Operation Your 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 two channels of your amplifier to act as though it were a single, much larger amplifier.
Balanced Bridging Kit Balanced Bridging Input Adapter (pin configuration) Male XLR Output (normal) Pin 1: signal ground Pin 2: signal + (non-inverting) Pin 3: signal – (inverting) 1 2 3 2 1 3 (shield not connected) Female XLR Input Pin 1: signal ground Pin 2: signal + (non-inverting) Pin 3: signal – (inverting) 1 2 3 Male XLR Output (inverted) Pin 1: not used (floated) Pin 2: signal – (inverting) Pin 3: signal + (non-inverting) Bridging Output Adapter (not drawn to scale) The “normal” leg of the Mad
2 CONNECT THE BALANCED BRIDGING INPUT ADAPTER TO THE INPUTS Connect the two male XLRs to two adjacent inputs on your amplifier, noting which XLR is marked red and which is black. The channel with the red, normal input will later be connected to the red, positive terminal of your loudspeaker. Don’t forget to choose the balanced input on each channel using the switch located between the XLR and the RCA connectors.
be bridged. (Alternatively, you may have custom cables built using your preferred wire and connectors, being careful to follow the wiring diagram below.
1 DISCONNECT YOUR AMPLIFIER FROM EVERYTHING Start with your amplifier totally disconnected from inputs, outputs, and AC power. It is always best to power down an amplifier before changing connections; here you are changing its basic configuration, making it essential. 2 CONNECT THE SINGLE-ENDED BRIDGING INPUT ADAPTER TO THE AMP’S INPUTS Connect the two male XLRs to two inputs of your amplifier, noting which XLR is marked red and which is black.
Biamplification In contrast to bridged operation (wherein two amplifier channels are “fooled” into behaving as a single, larger channel), biamplification makes use of two channels to drive different portions of a single loudspeaker. As with bridging, it offers a modular way of increasing the overall performance of your system (if your loudspeakers support biamplification). Since each channel of the amplifier is delivering current into its load only over a limited range of frequencies (typically bass vs.
The outputs of these two channels are then connected to two sets of binding posts on each loudspeaker. The loudspeaker’s internal crossover continues to divide the frequencies appropriately among the various drivers. To facilitate biamping, all Proceed power amplifiers have the same voltage gain and input sensitivity. We even adjust for the difference between single-ended and balanced signal levels, should you have to mix the two.
Care & Maintenance To remove dust from the cabinet of your amplifier, use a feather duster or a lintfree soft cloth. To remove dirt and fingerprints, we recommend isopropyl alcohol and a soft cloth. Dampen the cloth with alcohol first and then lightly clean the surface of the amplifier with the cloth. Do not use excessive amounts of alcohol that might drip off the cloth and into the amplifier.
U.S. and Canadian Warranty 90-Day Limited Warranty This Proceed® product is warranted to be free from defects in material and workmanship under normal use for a period of ninety (90) days from the date of purchase. To extend the warranty of this Proceed product, return the warranty registration card along with a copy of the original receipt of purchase to Madrigal Audio Laboratories, Inc., P. O. Box 781, Middletown, CT 06457.
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. 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.
Specifications: HPA 3 The correlation between published specifications and performance is unreliable. A list of numbers reveals virtually nothing. All technical measurements must be subject to qualitative as well as quantitative interpretation. Measurements of the Proceed amplifier yield excellent results by any standards. However, only those specifications that apply to its actual operation are included here. All specifications are subject to change at any time, in order to improve the product.
Dimensions 17.26" 43.84 cm triple monaural amplifier standby HPA 6.53" 16.6 cm power 17.61" 44.73 cm 0.695" 1.77 cm 15.47" 39.29 cm 19.55" 49.66 cm 1.40" 3.56 cm 16.87" 42.85 cm PR O C E E D R five channel amplifier by MADRIGAL AUDIO LABS made in u. s. a. 28 PUSH PUSH PUSH 17.46" 44.
Rack Mounting If you need or prefer to rack mount your amplifier, contact your Proceed dealer about the optional rack mount kit. This purpose-designed assembly provides the needed ventilation for the heatsink “chimneys” of the amplifier as well as the support required for this heavy component.
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Madrigal Audio Laboratories, Inc. 2081 South Main Street, P.O. Box 781 Middletown, Connecticut 06457 USA Telephone: (860) 346-0896 Fax: (860) 346-1540 http://www.madrigal.com/ PR O C E E D R is a registered trademark of Madrigal Audio Laboratories, Inc. a Harman International company 630329 © 5/1998 Madrigal Audio Laboratories, Inc. All rights reserved. Printed in U.S.A.
