B&K AV6000 - Design and Construction

INTRODUCTION
Note : This manual describes the A V6000 and AV654 amplifiers - the AV5000 has similar features and is described
in this manual only where differences exist
Exciting and reliable sources of high fidelity, audio signal amplification, the 6 channel AV6000 and AV654 amplrfers, and 5
channel AV5000 amplifier, offer excellent versatility and cost effectiveness for most multi-channel, home entertainment
systems.
The AV6000/654 is primarily a 6 channel amplifier capable of delivering a clean, fully musical, 100/60 watts r.m.s. per
channel into an 8 Q load. As well, the amplifier offers a ’bridging’ feature which allows those 6 channels to be combined into
3 more powerful channels. The 5 channel AV5000 (3 channels: 100 watts r.m.s., 2 channels: 60 watts r.m.s. into 8 £2) also
has bridging capability for combining 4 channels to 2 more powerful channels. These bridging capabilities present an
opportunity to use the amplifiers in a number of configurations for a variety of uses: the standard 6 channel mode, or a 5, 4
or 3 channel mode (AV6000/654); and the standard 5 channel mode, or a 4 or 3 channel mode (AV5000). Such versatility
makes these amplifiers particularly compact sources for a multiplicity of surround sound or multi-room applications.
While the B & K Components Ltd. AV muiti-channel amplifiers are engineered to interact harmoniously with all popular
sources and line stages, the match that approaches perfection is that of being driven by any one of the excellent B & K
preamplifiers presently available.
DESIGN AND CONSTRUCTION
The AV6000/654 utilizes high quality electronic circuitry to achieve an environment wherein a detaied. transparent and highly
musical sound can be realized. The high quality parts complement includes state-of-the-art solid state devices: 1% metal film
resistors, computer grade electrolytic power supply capacitors and a high capacity toroid transformer.
The amplifier operates class AB employing high current MOSFET power output stages. As such it is capable of reproducing
the most demanding digital or analog recordings at full rated power levels.
SETTING UP
Placement of the AV6000/654 is important and requires some pre-planning. In order to eliminate interference being induced
in the amplifier by other components, it must be physically located a safe distance away from all source components. This
will avoid their being influenced by the fields being propagated by the amplifier when it is under heavy load.
Ideally, the amplifier will be located near the speakers. This will minimize the adverse effects of inductance, capacitance and
any damping effect that might result from speaker wires interacting with the amplifier.
The amplifier is equipped with raised feet so that continuous ventilation can be maintained. As well, they help to maintain
acoustic feedback into the amplifier at a minimum. They also provide a measure of protection against scratching any surface
the unit might be resting on.
Note : Acoustic feedback can be identified as low frequency vibrations which are not part of the signal from the source
material. They also have a tendency to become louder and less controllable as you increase the system volume, The most
common source of acoustic feedback interference is the result of having the preamplifier and source components too dose
to the loudspeakers.
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