Madrigal Imaging BPA 3, BPA 2 User Manual
BPA 2 & BPA 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.
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.
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. If your
electrical outlets will not accept this type of plug, an adapter may be purchased. If an adapter is
necessary, be sure it is an approved type and is used properly, supplying an earth ground. If you
are not sure of the integrity of your home electrical system, contact a licensed electrician for assistance.
3. AC extension cords are not recommended for use with this product. If an extension cord must be
used, be sure it is an approved type and has sufficient current-carrying capacity to power this
product.
4. NEVER use flammable or combustible chemicals for cleaning audio components.
5. NEVER operate this product with any covers removed.
6. NEVER wet the inside of this product with any liquid.
7. NEVER pour or spill liquids directly onto this unit.
8. NEVER block air flow through ventilation slots or heatsinks.
9. NEVER bypass any fuse.
10. NEVER replace any fuse with a value or type other than those specified.
11. NEVER attempt to repair this product. If a problem occurs, contact your Proceed
12. NEVER expose this product to extremely high or low temperatures.
13. NEVER operate this product in an explosive atmosphere.
14. ALWAYS keep electrical equipment out of the reach of children.
15. ALWAYS unplug sensitive electronic equipment during lightning storms.
®
retailer.
3
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.
4
Table of Contents
Unpacking and Placement ........................................................................ 6
Unpacking .......................................................................................................... 6
Placement .......................................................................................................... 6
Ventilation ........................................................................................................... 6
Operating Voltage ...................................................................................... 7
A Quick Start ................................................................................................ 8
Special Design Features ............................................................................ 10
Multiple monaural design ................................................................................ 10
Low impedance power supply ....................................................................... 10
Balanced inputs ............................................................................................... 10
Robust output stage......................................................................................... 10
Extensive protection ......................................................................................... 10
Front Panel .................................................................................................. 11
Rear Panel ..................................................................................................13
Remote turn-on
tip polarity.................................................................................................. 14
Care & Maintenance ................................................................................. 16
U.S. and Canadian Warranty ..................................................................... 17
90-Day Limited Warranty ................................................................................... 17
Five Year Extended Warranty ............................................................................ 17
Obtaining Service ...................................................................................... 18
Specifications ............................................................................................. 19
Dimensions: BPA 2 & BPA 3 ........................................................................ 20
Rack Mounting ........................................................................................... 21
5
Unpacking and Placement
Unpacking Unpack your Proceed
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 BPA may be placed either near the preamplifier/control center or
near the loudspeakers. It may be placed on a shelf or in a cabinet where it is
convenient to operate.
Note that adequate clearance for the AC cord and connecting
cables must be left behind your BPA. We suggest leaving at least
three inches of free space behind your BPA to allow all cables
sufficient room to bend without crimping or undue strain.
Ventilation Be sure to allow 2 to 3 inches of clearance above your BPA to allow heat dissipa-
tion through air circulation. The vents on both the bottom and the top of the BPA
must be kept free from any obstruction which would reduce the flow of air
through the unit. The best rule of thumb is this: if the top of your BPA is too hot
to touch when “idle,” it needs better ventilation. If so, consider drilling holes in
the supporting shelf under the BPA to promote flow-through ventilation, or use
fans to increase air circulation.
®
BPA 2 or BPA 3 power amplifier and keep all packing
Open equipment racks are generally best for power amplifiers, as they allow
ample ventilation. If your amplifier must be located inside a cabinet which restricts airflow, consider using some fans to increase ventilation.
Avoid placement on soft surfaces such as carpeting. If you prefer to have the BPA
on the floor near your loudspeakers, be sure to place it on a firm surface. (A
piece of tempered glass under the amplifier is aesthetically unobtrusive while
providing firm support and allowing the required ventilation.)
Mechanical drawings are included in this manual to facilitate special installations
and custom cabinet work (see “Dimensions” at the end of this manual).
For your protection, review “Important Safety Instructions”
before you install your BPA.
6
Operating Voltage
The Proceed BPA 2 and BPA 3 are factory-set for 100V, 120V, 220V, 230 or 240V AC
mains operation at either 50 or 60Hz, according to the country for which the unit
was manufactured. (230V only in European Union countries, in compliance with
CE regulations.) Make sure that the label on the rear of the BPA 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.
If the voltage indicated does not match the service in your area, see your Proceed dealer.
7
Loading...