SpeakerCraft BB275R Merkblatt

Big Bang Power Amplifiers

Bulletproof

The idea that "One Size Fits All" may sound good in theory, but in practice it usually leads to "One Size Fits None". While most manufacturers

assume that the few amplifiers they offer are good enough to work in all situations, the truth is that they usually fall short of meeting your multi-

room audio needs, especially in complex applications. Even if you have a basic system, you may require more advanced features in the future. In

these times of rapidly advancing technology, many of us have found that the products we purchase today are outdated tomorrow. SpeakerCraft

has strived to reduce this problem by building one of the most flexible and advanced amplifier lines on the market today.
When SpeakerCraft set out to develop the custom installation industry’s most complete line of amplifiers, we knew we had to have answers for

the variety of situations that any installation may encounter, both today and tomorrow. At the SpeakerCraft Technical Training Institute in Riverside,

California, we spent thousands of hours working with our team of engineers and A/V dealers to design the Big Bang series. We took our dealers’

input seriously, and went to work making their wish list a reality. The Big Bang series of amplifiers is a highly reliable line of six models that offer a

solution for every installation with a blend of power, performance, and value.

High Current Design

The BB2125, BB275, BB1265 and BB865 incorporate discreet power supplies to

balance power between channels. The BB1265 & BB865 multi-channel models have

the discreet power supplies paired monaural so that demands put on one channel

do not affect performance of the others. A massive toroidal transformer assures

adequate power reserves. Discreet output devices allow the amplifier to drive low

impedance loads with very low distortion. Huge filter capacitors improve dynamics

and lower IM distortion, while providing a sustained energy storage for low bass.

High Current Stereo Amplifiers

The BB2125 and BB275 are two channel amplifiers that utilize discrete high current designs, which make them ideal for installations that require

multiple speakers to be connected to one amplifier. The high current designs also allow the amplifiers to reproduce and sustain deep bass. Custom

friendly features include: Multiple turn-on modes, so the amplifier turns on automatically when the main system is switched on; Front mounted

independent level controls allow you to balance the volume of each speaker to match the volume of the main system, which can vary greatly with

different speakers and power ratings; and Pass through inputs to outputs, which allow multiple amplifiers to be daisy-chained together for multi-

room applications and future expansion.

High Current Multi-Channel Amplifiers

Multi-Channel Amplifier Features

The BB1265 and BB865 are multi-channel amplifiers that have been designed to meet the needs of the most demanding home theater and multi-

room applications. All of the custom user friendly features of our stereo amplifiers are included. In addition, all models feature independent level

controls for each channel, which allow you to balance the volume for each room. Room volume can vary significantly depending on the type of

speakers, and how many are installed. Which audio source do you want each channel to play? You have four choices, all selectable via a simple

switch. Each channel can play inputs from a common left source, a common right source, a left + right source, or a dedicated source. This means

one room can listen to a CD, while another room can be playing a radio station, or any audio source that is connected to that channel. Need

extra power for a large room with lots of speakers? Just flip a switch and adjoining channels are bridged together to give you that extra power

you need. You can also rest easy knowing that each channel has its own protection circuitry, shutting down only the troubled area when needed

for system safety.
The BB1235 and BB835 are multi-channel amplifiers that offer affordable solutions for less demanding multi-room installations. These multi-channel

amplifiers include all the features of the BB1265 and BB865 for flexible, reliable custom installation.

Main bus inputs allow outputs
from receivers, CD players,
TVs, or any stereo audio
sources to be amplified across
all channels for easy multi-
room applications. Auxiliary
inputs allow an additional
audio source to be played on
any channel that is switched
to AUX.

Bus outputs allow the
bus inputs to be sent
to other amplifiers or a
daisy chain without the
need for ‘Y’ cables or
splitters. Auxiliary out-
puts allow you to daisy
chain the input to other
audio sources.

Level controls for
each channel

Gold-plated
individual channel
inputs allow you to
connect different
audio sources to
each channel

Source Selection
switch allows you
to select between
the common bus
and auxiliary inputs,
or the individual
channel input

One switch allows you
to select which stereo
input channel will play
through the speaker out-
puts: left, right, or left
and right combined. If
switched to Left + Right,
both input channels are
combined.

The Power Mode
switch is used to toggle
between three differ-
ent trigger methods to
power up the amplifier.

3-30V AC or DC input to trig-
ger power up with voltage
from another device, such as a
receiver

12V output to turn on other devices when
amplifier is powered up. Connect to projector
screens, powered drapes, or other devices with
voltage triggers.

Binding posts allow the use of
stripped speaker wire, spade
connectors, or banana plugs

3-Prong removable
power plug

Fused AC input

Plugs for InstaLLock

™

connectors

are provided for easy connection of
speaker outputs. Requires optional
InstaLLock

™

amplifier connectors to

be purchased separately.

Main bus inputs allow
outputs from preamplifiers,
receivers, CD players, TVs,
or any stereo audio source

The Mode switch is used to switch
between three different trigger
methods to power up the amplifier

12V output to turn on other devices when
amplifier is powered up. Connect to projector
screens, powered drapes, or other devices with
voltage triggers.

3-30V AC or DC input to trigger
power up with voltage from another
device, such as a receiver

Binding posts allow the
use of stripped speaker
wire, spade connectors,
or banana plugs

Bridging switch allows
you to easily double
the power output by
coupling two channels
together

You can depend on us... We’ve manufactured millions of custom installation products, and pledge every product we build will give you the

highest level of workmanship and sound performance.

Impedance
switch is used
to select either
8

ohm

or 4

ohm