PR O C E E D PRE Preamplifier
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 PRE preamplifier. 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 PRE preamplifier. 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 ....................................................................... 7 Unpacking .......................................................................................................... 7 Installing Batteries in the Remote Control ........................................................................................... 7 Placement .......................................................................................................... 7 Ventilation .........
Remote Control Advanced Features .................................................................................. 30 punch-throughs ............................................................................................... 30 volume control “punch-through” ...................................................................................... 30 channel control “punch-through” ...................................................................................... 31 transport control “punch-through” ..
Unpacking and Placement Unpacking Unpack your Proceed® PRE preamplifier and keep all packing materials for future transport. Locate and remove all accessory items from the cartons. Accessories include: 1 1 4 1 AC power cord PRE remote control alkaline batteries for the remote control hex (“Allen”) wrench Carefully inspect the product for damage and flaws. If you discover any, see your Proceed dealer immediately.
Operating Voltage The PRE preamplifier is 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/50Hz only in European Union countries, in compliance with CE regulations.) Make sure that the label on the rear panel of the PRE 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.
1 2 3 4 5 p r e cd 1 cd 2 tape 1 tape 2/ssp bal/aux power path tuner main bal record inverted polarity mono 7 6 mute PR O C E E D 10 9 8 Front Panel 1 SOURCE SELECTION BUTTONS These six buttons select audio signals from among the six audio inputs. (Note that both cd1 and bal/aux are balanced inputs which use precision XLR connectors.) To use these selection buttons, choose the appropriate path (see path, below), and then make your selection.
4 BAL (BALANCE) Pressing this button followed by the volume +/– buttons will alter the relative volume of the Left and Right speakers. The direction of the balance shift is indicated by the green arrowhead indicators in the main display, and the magnitude of the balance shift is shown in the main display. Both the volume +/– buttons and the main display will revert to their normal operation (volume) after a few seconds.
Front panel standby 9 TAPE2/SSP INPUT The tape2/ssp input of the PRE is special in that it may be used as either a normal tape input such as you might find on other preamplifiers, or as a dedicated surround sound processor loop. (See Using Surround Sound Processors for more information.) 10 POWER & POWER LED Assuming that the PRE’s power cord is connected to AC power, pressing this latching power button connects the PRE to the AC mains and turns on the unit.
cd2 tuner tape1 tape2/ ssp R cd1 L R bal/aux L L L R R R R p r e by MADRIGAL AUDIO L AB ORATORIES .5A (250V) slo-blo 5x20mm R rec1 rec2/ssp L PR O C E E D ~ ac mains mains fuse: o u t p u t s i n p u t s main out R L main out L remote IR remote turn-on please see bottom panel for voltage and other information Rear Panel Caution! Disconnect all associated equipment from the AC mains BEFORE making any signal connections and applying power to the PRE.
To choose between either the standard tape2 input function or the special ssp input (which operates at unity gain), press and hold the tape2/ssp button until its LED indicator changes color. Amber (matching the other input LEDs) indicates normal tape2 functionality; green indicates the special ssp mode of operation. (Again, see “Using Surround Sound Processors” for more information.) 3 BALANCED AUDIO INPUTS Accepts right-channel and left-channel signals from source equipment with balanced outputs.
The PRE incorporates a safety feature which prevents selecting the same device as both the source to be recorded and the source to be monitored at the same time. Were you to do so, a feedback loop would be created which could be potentially damaging to your loudspeakers. If you attempt to select the same source for both recording and monitoring, the second selection will be refused and the indicator light will blink several times before reverting to the previously-selected input.
The pin assignments of these XLR-type male outputs are: 1 2 3 Pin 1: Signal ground Pin 2: Signal + (non-inverting) Pin 3: Signal – (inverting) Connector ground lug: chassis ground Refer to your power amplifier’s operating manual to verify that the pin assignments of its input connectors correspond to the PRE. If not, wire the cable so that the appropriate output pin connects to the equivalent input pin.
10 Caution! AC MAINS FUSE AND AC POWER RECEPTACLE An ac mains fuse is provided which disconnects the PRE from the wall outlet’s AC power under fault conditions. If this fuse should “blow” for any reason, replace it only with the same value fuse (0.5A/250V slo-blo 5x20mm).
Using the PRE Listening & Recording The input buttons of the PRE are used to select both the source that will be heard and the source that will be made available to any recording devices in the system. The path button controls which of those selections is made. When the main LED next to the path button is lit, any input selected will be sent to the main outputs of the PRE, and (presumably) on to a power amplifier and loudspeaker. The selected input’s LED indicator will light and be amber in color.
Setting Input Offsets 18 The PRE allows you to eliminate the sometimes significant differences in output between your various source components by adjusting the input offset of each input. Once adjusted, switching between sources will automatically introduce an change in volume within the PRE to “offset” the differences between your components. This can avoid abrupt changes in level which might otherwise disrupt your listening sessions.
Learning Remote Control installing batteries in the remote control This remote control uses four AAA 1.5V batteries. Please be sure to match the batteries with the (+) and (–) markings inside the battery compartment during installation. A: To Open and Close the Battery Compartment Cover To open the battery cover, push the latch forward toward the top of the remote control, and lift the latch up.
1 LCD DISPLAY This Liquid Crystal Display (LCD) shows messages as to which Device Mode the remote is currently in, as well as various messages displayed while programming your remote. 2 PROGRAMMING STATUS LED This three-color (green/red/orange) LED indicates the remote’s status when IR commands are being transferred from another compatible IR remote. For more information on “teaching” the remote to learn IR commands see Programming and Using the Remote Control.
power standby mute volume 8 PRE OPERATIONAL CONTROLS This section of the learning remote contains the most often used controls for the Proceed PRE. • volume polarity cd1 • • 5 cd2 6 • tape1 7 tape2 • 8 bal/aux 9 • • tuner 0 mono display • • • • balance path • • • standby: pressing this button will place the PRE into standby mode. As with all buttons on the learning remote, this button can be “programmed over” if you wish.
Programming and Using the Remote Control The PRE is equipped with a powerful backlit remote control that will control up to seven additional devices, in addition to all the features of the PRE. It may also be programmed to “learn” the functions from most current infrared remote controls.
learning new functions on the main keypad 1 Select the mode in which you wish to learn the new function by pressing the corresponding Device button. 2 Place the PRE remote and the original remote control to be learned from, on a flat surface. Line up the remote controls head-to-head, about two to three inches apart.
• • • • Increase or decrease the head-to-head distance between the two remote controls, within a 1 to 5 inch range. Increase or decrease the time you press-and-hold the button on the original remote control in step 5, for 1 to 2 seconds. Avoid fluorescent lights or strong sunlight during the set-up. These lighting conditions can cause interference with the learning process. Verify that the original remote control contains fresh batteries.
erasing learned functions To erase learned functions, please refer to the following procedures: Erasing Individual Buttons: 1 Press the Device button for the mode where the learned function has been stored. 2 Press-and-hold the Device and the play buttons simultaneously, for about three seconds, until the LCD shows LEARN. 3 Press-and-release the button to be erased. The LCD will show READY. 4 Press the light button. The LCD will flash ERASE, CLEAR, the Device Mode and then return to LEARN.
NOTE: Some audio/video devices have separate buttons for Power On and Power Off. To operate these devices on the remote, press the corresponding Device Button to turn the equipment ON and press the power/standby button to turn the equipment OFF or place the equipment in the Standby mode. Please try all the functions of this remote control with your equipment. The most common functions are labeled on the remote.
Planning Your Remote Control For your convenience, we have included the worksheets on the following two pages on which you may plan which additional functions you will assign to which buttons on the PRE remote control. We suggest photocopying this page and then planning your programming before getting into it too heavily. Refer to the drawing below which shows the PRE remote at the left and the PRE remote at the right with numbers on each button which correspond to the numbers on the worksheets that follow.
remote control function reference no.
no.
Remote Control Advanced Features After you set up the remote control to operate your equipment, you can also program advanced features on the remote control. The advanced features are designed to enhance the use of the remote control with your home entertainment system.
channel control “punch-through” You can program the remote so that either the Sat or Cable Channel Controls (channel + or channel –) will also operate in other modes on the remote control. NOTE: When this feature is active, the SAT or Cable channel + or channel – will override any existing channel controls in that mode. To program the remote for Channel Control Punch-Through, follow these steps: 1 Press the Device button for the device you wish to have associated with the volume control (e.g.
3 Press either the vcr Device button to set-up for VCR Transport Control or the cd Device button to set-up for CD Transport Control. VCR or CD will flash in the LCD, depending on the Device button selected. The VCR or CD Transport Controls (Play, Stop, Fast Forward, Rewind, Pause and Record) will now override the original functions of the buttons in this mode.
programming memory buttons To program the Memory Buttons, follow these steps: 1 Select the section that you wish to program the Memory Button in by pressing the corresponding Device button (audio or sat) and mute button, simultaneously. SET will appear in the LCD. 2 Press one of the Memory Buttons (m1, m2, m3, m4 or power/ standby) into which you wish to store the functions. M(15)_## will appear in the LCD.
erasing memory buttons To erase the Memory Buttons, follow these steps: 1 Select the mode (AUD or SAT) in which you want to erase the Memory button. 2 Press the corresponding Device button (audio or sat) and mute button simultaneously. SET will appear in the LCD. Press the Memory button to be erased. M(1-5)_## will appear in the LCD. 3 Press the channel + button. SAVE will flash in the LCD. The Memory button is now erased.
Teaching PRE Functions to its Remote Control If you inadvertently overwrite one or more PRE commands in your PRE remote control, never fear—you don’t have to obtain another PRE remote in order to re-teach your own its PRE-specific commands.
5 Press and hold the corresponding button on the PRE for about 3 seconds. The LCD on the PRE remote will show – – – – indicating that it is receiving the information from the original remote control. 6 Release the button on the PRE. The LCD on the PRE remote will show RETRY. 7 Press and hold the same button on the PRE once again, for about three seconds. The LCD on the PRE remote will flash GOOD, the Device Mode and then return to LEARN, verifying that the new function has been learned.
1 Press and hold the balance (BAL) button until “0L” appears in the display. A momentary press of the balance button will, of course, simply place the PRE in balance mode. When you press and hold the balance button instead, the PRE will wait for a few seconds to make sure that your press-and-hold action is quite deliberate, and then enter a teaching mode which allows you to program a learning remote control with infrared (IR) commands.
Notice that a yellow LED in the main display lights up briefly after you press mute. This LED indicates that the PRE is transmitting the command which corresponds to the code you have selected. You may repeat the process of selecting special commands (using volume +/–) and then transmitting them (pressing mute) until all desired commands have been learned by your remote control.
Using Surround Sound Processors The PRE preamplifier incorporates a special surround sound processor mode allowing it to integrate the highest performance audio with surround sound— that is, dual-purpose music and movie systems. In order to better understand the value of this design, it is essential to understand a bit about the nature of a Dolby Pro Logic Surround™ decoder. The Dolby Stereo® system encodes four discrete channels into a two-channel matrix during the production of the movie soundtrack.
It would seem that there is no way to properly integrate a surround sound processor with a preamplifier for a high quality, dual-purpose system. Surround sound and the PRE The PRE solves this dilemma by virtue of a specially designed surround sound processor interface.
channels cannot be changed by the PRE while in “ssp” mode, the preamplifier cannot corrupt the careful calibration of the processor’s output levels. And since the video sources would be fed directly to the processor’s audio input(s) at a line level, input calibration cannot be disturbed by the preamplifier. Noise in A/V systems In some cases, connecting your audio and video systems together in this fashion can result in noise, typically a 60 Hz or 120 Hz hum.
Care & Maintenance To remove dust from the cabinet of the PRE, use a feather duster. To remove dirt and fingerprints, we recommend isopropyl alcohol and a soft cloth. Moisten the cloth with the alcohol first and then lightly clean the surface of the PRE. Caution! 42 At no time should liquid cleaners be applied directly to the PRE, as direct application of liquids may result in damage to electronic components within the unit.
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 PRE yield excellent results by any standards. However, only those specifications that apply to its actual operation are included here.
Dimensions 17.25" 43.8cm p r e cd 1 3.5" 8.9cm cd 2 standby tape 1 tape 2/ssp bal/aux path tuner main bal record inverted polarity mute mono PR O C E E D 14.25" 36.2cm 2.00" 5.1 cm 1.00" 2.54cm 12.27" 31.2cm 13.25" 33.7cm 0.98" 2.49cm 13.25" 13.25" 33.7cm 3.5" 8.9cm 0.98" 2.
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 630386 © 7/1999 Madrigal Audio Laboratories, Inc. All rights reserved. Printed in U.S.A.
