PR O C E E D AMP 2 & AMP 3 Power Amplifiers
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 the 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® AMP 2 or AMP 3 power amplifier and keep all packing materials for future transport. Shipment of the amplifier without the original packing material is not recommended. Locate and remove the heavy gauge AC power cord, which is tucked into a cardboard slot within the box. Placement Your Proceed AMP may be placed either near the preamplifier/control center or near the loudspeakers.
Operating Voltage The Proceed AMP 2 and AMP 3 are factory-set for 100V, 120V, 220V, or 240V AC mains operation at either 50 or 60Hz, 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 bottom of the AMP 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.
6 TURN ON THE AMP BY PRESSING THE POWER BUTTON Pressing the latching power button on the front panel of the AMP 2 and AMP 3 will connect the amplifier to the AC mains. If the indicator light does not light, the amplifier is either not receiving AC power or its protection circuitry has been engaged. 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.
Special Design Features Congratulations on your purchase of a Proceed AMP! 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. Multiple monaural design Consistent with the finest amplifiers, your Proceed AMP is a true “multiple monaural” design. Each audio channel has its own, dedicated power supply—including a separate 300VA toroidal transformer for each channel.
Home THX Audio System certification Lucasfilm, Ltd.® has established minimum standards for the performance of various components which may be used in their Home THX® Audio System.
a m p 2 channel power amplifier power PR O C E E D 1 a m p 2 3 channel power amplifier power PR O C E E D Front Panel 1 POWER BUTTON Pressing the latching power button connects the amplifier to the AC mains, turning it on. Power consumption when fully on and at idle is approximately 140 watts for the AMP 2 and 210 watts for the AMP 3.
PUSH input select 2 1 3 + outputs – ~ ac mains PUSH input select 2 1 3 + outputs – PUSH input select 2 1 3 (left) + outputs – PUSH 2 1 3 input select (left) 100-120VAC: 12A 3AB fast acting 200-240VAC: 6A 3AG fast acting when viewed from the front mains fuse channel 3 remote turn-on input select 6 7 when viewed from the front 5 2 1 3 channel 2 (center) 4 (right) 3 when viewed from the front 2 channel 1 1 PUSH when viewed from the front ~ ac mains + outputs – channel 2 +
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.
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).
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).
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 both the left and right channels of your amplifier to act as though it were a single, much larger amplifier.
The “normal” leg of the Madrigal Balanced Bridging Input Adapter will be marked with a red stripe to indicate positive polarity, and the inverted leg will be marked with a black stripe to indicate inverted polarity (corresponding to the red and black terminals of your loudspeaker). The Balanced Bridging Output Adapter is simply a heavy-gauge copper bar (silver- and gold-plated) used to strap two of the output ground terminals together.
3 CONNECT THE BALANCED BRIDGING OUTPUT ADAPTER TO TWO BLACK OUTPUT TERMINALS All Proceed amplifiers have two sets of output terminals per channel, wired in parallel (for convenience when biwiring). You may use either of the black output terminals. Connect one end of the Balanced Bridging Output Adapter to a black output terminal on one of the two channels to be bridged together, and then connect the other end of the Output Adapter to a black output terminal on the other channel.
Single-Ended Bridging Kit Single-Ended Bridging Input Adapter (pin configuration) Male XLR Output (normal) Pin 1: signal ground Pin 2: signal + (non-inverting) Pin 3: signal ground 1 2 3 Female RCA Input Skirt: signal ground Center: signal + (non-inverting) 1 2 3 Male XLR Output (inverted) Pin 1: signal ground Pin 2: signal ground Pin 3: signal + (non-inverting) Bridging Output Adapter (not drawn to scale) The “normal” leg of the Madrigal Single-Ended Bridging Input Adapter will be marked with a red
Single-Ended Bridged Input Connection Madrigal Bridging Output Adapter inverting from preamplifier PUSH channel 2 (left) when viewed from the front PUSH channel 1 (right) when viewed from the front loudspeaker terminals mains fuse 100-120VAC: 8A 3AG fast acting 200-240VAC: 4A 3AG fast acting non-inverting Madrigal Single-Ended Bridging Input Adapter 3 CONNECT ONE END OF THE SINGLE-ENDED BRIDGING OUTPUT ADAPTER TO TWO SIDE-BY-SIDE BLACK OUTPUT TERMINALS All Proceed amplifiers have two sets of
Biamplification In contrast to bridged operation (wherein a two channel amplifier is “fooled” into behaving as a single, larger amplifier), biamplification makes use of a two-channel amplifier to drive different portions of a single loudspeaker. As with bridging, it offers a modular way of increasing the overally performance of your system (if your loudspeakers support biamplification).
Biamping wiring diagram from preamplifier (left) PUSH channel 2 PUSH when viewed from the front 100-120VAC: 8A 3AG fast acting 200-240VAC: 4A 3AG fast acting channel 1 mains fuse when viewed from the front (right) loudspeaker terminals —treble— —bass— Balanced Y-adapter “Horizontal” biamping refers to the practice of using one amplifier for left and right low frequencies, and another for the high frequencies.
Care & Maintenance To remove dust from the cabinet of your amplifier, use a feather duster or a lint-free 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 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 AMP 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: AMP 2 17.25" LU CA S FI LM a m p 2 channel power amplifier ® power 4.45" PR O C E E D 0.325" 2.00" 14.25" 1.00" 0.8" 16" toroidal transformer toroidal transformer 0.98" 0.8" 16" 4.45" 4.33" 0.325" 0.
Dimensions: AMP 3 17.25" LU CA S FI LM a m p 3 channel power amplifier ® power 4.45" PR O C E E D 0.325" 2.00" 14.25" 1.00" 0.8" 16" toroidal transformer toroidal transformer toroidal transformer 0.98" 0.8" 16" 4.45" 4.33" 0.325" 0.
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 630291 © 11/1997 Madrigal Audio Laboratories, Inc. All rights reserved. Printed in U.S.A.
