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General
Welcome
Thank you for your purchase of a Bryston 2.5B
(Cubed) amplifier! Decades of ongoing 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 2.5B
is a dual-mono design audio power
3
amplifier with two channels capable of 135 watts
each 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. PRO amplifiers feature 19 inch wide rack
mountable dress panels in a black anodized front
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 .....................................................
Balanced vs. Single Ended Input ..........................
Power Conditioners ..............................................
External Control Voltage .......................................
Front Panel ..................................................................
Rear Panel ....................................................................
2.5B
Specifications ...................................................
3
Dimensions ................................................................
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2
3
3
3
3
3
4
4
4
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5
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6
7
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10
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finish and also include individual channel trims
located on the rear panel.
Features
Bryston 2.5B
includes the following features:
3
•
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
pass through with supplied connector.
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.
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