Table Of Contents - Bryston 3B3 Owner's Manual

General
Welcome
Thank you for your purchase of a Bryston 3B
or 4B (Cubed) amplifier! Decades of ongoing
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research and development have produced our
highest performing amplifiers yet. Our customers
are a tremendous resource to whom we look for a
measure of success. Please feel welcome to contact
us with feedback and suggestions.
Description
The 3B and 4B are dual mono design audio
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power amplifiers with two channels capable of 200
watts and 300 watts each respectively intended for
use in very high performance professional audio
systems. Robust yet beautiful machined aluminum
enclosures house our proprietary industry-leading
circuit designs resulting in exemplary performance
observed both in the listening space and in the
laboratory.
C-Series variants are available in your choice of 17
inch or 19 inch wide non-rack mountable aluminum
dress panels anodized in clear (silver toned) or
black. Nineteen inch wide C-Series amplifiers
include front mounted handles. PRO amplifiers

Table of Contents

Important Safety Instructions ....................................
General.........................................................................
Welcome ................................................................
Description ............................................................
Features .................................................................
Shipping Box and Packing Material ......................
Installation and Usage ................................................
Ventilation .............................................................
Connecting to A/C Power ......................................
Connecting to Loudspeakers: 2 Channel Mode ...
Connecting Audio Inputs ......................................
Balanced vs. Single Ended Input ..........................
Power Conditioners ..............................................
External Control Voltage .......................................
Connecting to Loudspeakers: Bridged Mode .......
Front Panel ..................................................................
Rear Panel ....................................................................
3B Specifications ......................................................
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4B Specifications ......................................................
3
Dimensions ................................................................
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2
3
3
3
3
3
4
4
4
4
4
5
5
5
6
7
8
10
10
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feature 19 inch wide rack mountable dress panels
with a black anodized front finish and also include
individual channel trims located on the rear panel.
Features
Bryston 3B and 4B include the following features:
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• Switchable gain: 23dB or 29dB
• Balanced (XLR or TRS) input. Pin 2 positive.
• Single ended (RCA) input.
• SoftStart circuitry for managing inrush current
upon initial power up.
• Wired remote control AC/DC trigger input and
passthrough with supplied connector.
• Bridged output mode available.
Shipping Box and Packing Material
Please keep the original shipping box and all
packing material. This will ensure the amplifier is
protected in future transport. In the unlikely event
you have a problem and must return it for service,
you must use the proper packing material. Ship
the amplifier only in the original packing material,
as the unit is not insurable by carriers otherwise.
Replacement packing materials consisting of a
shipping carton with plastic foam inserts is available
from Bryston for a small fee.