ESR Series · Introduction
Introduction
Thank you for purchasing this KV2 Audio, ESR Series system, consisting of the ESR2800/3000MkII stereo controller/amplifier
unit, two ESR212/215MkII speakers and optional variants of subwoofers.
The ESR range has been developed for a particular niche in the market, where an all in one box is needed to give clear
detailed reproduction over a wide area. The ESR212 and 215MkII are three way full range enclosures with wide dispersion
characteristics. They can be used vertically for theatre, church or cultural centre type installations, or horizontally mounted
to give excellent coverage over a tiered seating area for stadium or grandstand type applications.
Similar to our popular ES range, the ESR cabinets are fully active and driven by a proprietary amplifier, which delivers
equalized, and time aligned accurate signal to each of the components. Two ESR212 cabinets can be driven by a single
ESR2800 High Definition Amplifier (analogically with ESR215MkII's and ESR3000MkII), which houses all signal processing and
amplification, as well as providing control for two different external subwoofer cabinet configurations if required.
In situations where extended bass response is not needed, but full range high definition audio reproduction with extremely
good coverage is required, the ESR Range offers an ideal solution. Economies of scale are achieved by the requirement
of only one ESR amplifier, to run a three way active stereo system where other systems would require processors and multiple
amplifiers to achieve a similar configuration.
This manual contains important information on operating the ESR system correctly and safely. Please take some time
and read this manual to familiarize yourself with the advanced features of this system.
The ESR2800/3000MkII Amplifier is a three-way, active control and amplification system, specifically designed for the KV2
Audio ESR series loudspeaker systems. It houses all signal processing and amplification, as well as providing control for
external subwoofer cabinet configurations, and to operate additional subwoofer cabinets if needed. External subwoofers are
powered by the external subwoofer amplifier (VHD3200).
The amplifier compliment and configuration inside the ESR2800/3000MkII Amplifier is as follows:
High Frequency - 100-watt, Class AB, Push pull, Low intermodulation design.
Mid Frequency - 200-watt, Class AB, Push pull, Low intermodulation design.
Low Frequency - 1000-watt, High-efficiency, Current-enhancing switch mode technology with Linear Active Filter.
In most cases it would be advisable to use a KV2 Audio Line driver (LD4) in addition at the mixer end, to ensure that the line
to the amplifier is driven correctly and the signal integrity maintained.
Although this system is simple to operate, improper use can be dangerous. This is a very high-powered device that can put
out high voltages and sizeable currents. Always use safe operating techniques with the ESR Series system.
Important notice
As part of KV2's constant programme of improvement and upgrades, there are now two versions of the ESR215 and ESR3000.
The current version are identified as ESR215MkII and ESR3000MkII, (with serial numbers that start from
B26Q010159
for the ESR215MkII and all ESR3000MkII amplifiers begin with the serial numbers
A16P090091
.
The Technical differences between old and new ESR215MkII are:
The original version is complemented with 4 OHM woofers and are
wired internally in series
.
The new version MkII has 16 OHM woofers and are
wired in parallel
.
It is important to use new version of ESR3000MkII amplifiers with ESR215MkII for correct response and operation
and not to mix old and new.
FOR YOUR SAFETY, READ THE IMPORTANT PRECAUTIONS SECTION AS WELL AS THE INPUT, OUTPUT AND POWER
CONNECTION SECTIONS OF THIS MANUAL.
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