Owner manual

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EX2.5 USER GUIDE P. 3
HOW TO USE THIS MANUAL
As you read this manual, you’ll nd gures and
diagrams to help you understand and visualize what
you’re reading. You’ll also nd numerous icons that
serve as cues to ag important information or warn
you against improper or potentially harmful activities.
The EX2.5 can be used in a variety of system applica-
tions. It can add high performance bass reproduction
to active speaker systems such as KV2 Audio’s EX12
loudspeaker, or it can be easily used with passive
speaker systems. The built in electronic high pass lter,
phase and independent output level controls provide
high precision, easy to use system integration circuitry.
Electronics
Amplier power, electronic crossovers, equalization,
phase alignment and speaker protection are integrated
into the EX2.5’s amplier module.
On-board electronics ensures fast, easy set up and
complete control making it easy to set up and provides
long-term reliability. An improved version of KV2
Audio’s switch mode, current enhancing low frequency
amplier increases overall system eciency to over
90% and delivers 1000 watts of continuous power.
KV2 Audio has developed an amplier topology that
possesses two unique characteristics that are critically
important for high performance, active subwoofer
systems. The EX2.5 amplier topology delivers very
high eciency and generates minimal thermal losses
allowing the amplier to deliver extremely high power
levels reliably whilst employing a simple cooling
system.
Secondly, in order to reproduce low frequency infor-
mation with high transient content and extend the
operational boundaries of the acoustic design, the
amplier needs to deliver an extraordinary amount of
current in order to keep the woofer’s high mass under
control. This is especially true under typical “phase
shift” conditions, in which the amount of the current
requirement is sometimes doubled. Through the
implementation of a proprietary, switch mode ampli-
er technology, the EX2.5 amplier provides extremely
high eciency with low losses and delivers the highest
woofer control by delivering higher current levels
under “phase shift” conditions.
The new conguration improves overall system
eciency and increases output allowing passive
radiation of heat to take place through a unique
“n-less” heat sink that can be placed in any position or
direction.
Additionally, the EX2.5 amplier unit contains an
internally located electric fan that is operated by a
temperature sensing circuit which will slowly bring the
fan online as required.
Introducing the EX2.5 MkII
The EX2.5 is a high output, double 15” active
subwoofer system. It is the ‘active’ brother of the ES2.6
passive subwoofer module.
Through the use of proprietary amplier technology,
a precision manufactured state of the art woofer
component and the innovative implementation of a
high eciency, twin chamber acoustic design, the
EX2.5 provides depth and power that belies in size.
This system falls directly out of KV2 Audio’s philoso-
phy to develop products with increased dynamic
range, very high output and a consistent sound
character no matter what the output level.
The product uses the same low frequency amplier
found inside the EPAK2500/R. Internal amplier
features Speaker Level Output on a EP4 connector to
drive one additional ES2.6 subwoofer. (Not to be used
with ES2.5(4Ω) ). EX2.5 also features a stereo crosso-
ver, High Pass Outputs and full overdrive protection.
“NOTE” identies an impor-
tant or useful piece of
information relating to the
topic under discussion.
“TIP” oers a helpful tip
relevant to the topic at
hand.
“CAUTION” gives notice
that an action can have
serious consequences and
could cause harm to
equipment or personnel,
delays, or other problems.
INTRODUCTION