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ESP4000 · G
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ESP4000 · Getting Started
IT IS RECOMMENDED THAT THE VOLTAGE SUPPLY BE WITHIN THE RATED VOLTAGE WINDOW. THIS ENSURES THAT AC
VOLTAGE VARIATIONS FROM THE SERVICE ENTRY - OR PEAK VOLTAGE DROPS DUE TO CABLE RUNS - DO NOT CAUSE THE
AMPLIFIER TO CYCLE ON AND OFF OR CAUSE DAMAGE TO THE POWER SUPPLY.
Voltage Requirements
The ESP4000 operates safely and without audio discontinuity if the AC voltage stays within the operating window of 100V-130V
in 115V mode, 200V-250V when working in 230V mode and 220-270V when working in 250V mode at 50 or 60Hz.
CAUTION: IF THE ON LED DOES NOT ILLUMINATE OR THE SYSTEM DOES NOT RESPOND TO AUDIO INPUT, REMOVE AC
POWER IMMEDIATELY. VERIFY THAT THE VOLTAGE IS WITHIN THE PROPER RANGE. IF THE PROBLEM PERSISTS, PLEASE
CONTACT KV2 AUDIO OR AN AUTHORIzED SERVICE CENTER.
If the voltage drops below the low boundary of its safe operating range, the amplifier will shut down if the voltage does not
rise above the low boundary before storage circuits are depleted. How long the amplifier will continue to function during
brownout depends on the amount of voltage drop and the audio source level during the drop. If the voltage increases
above the upper boundary of the range, the power supply can be damaged.
FOR BEST PERFORMANCE, THE AC CABLE VOLTAGE DROP SHOULD NOT ExCEED 10 VOLTS, OR 10 PERCENT AT 115 VOLTS
AND 5 PERCENT AT 230 VOLTS.
Make sure that even with the AC voltage drop, the AC voltage always stays within recommended operating ranges.
The minimum electrical service amperage required by an ESP4000 amplifier is the sum of each amplifiers maximum continuous
rms current. An additional 50 percent above that amperage is recommended to prevent peak voltage drops at the service entry.
The Power Connector
The ESP4000 requires grounded outlets. It is very important that the amplifiers AC supply be properly grounded in order to
operate safely and properly. Use the PowerCon AC cable-wiring diagram overleaf to create international or special-purpose
power connectors:
Power connector assembly
Current Requirements
Each of the ESP4000's power supply inputs require approximately 20 Amps max at 115V AC for proper operation. This means
that both of the ESP4000's power supplies must be powered from an individual 20 A breaker when running in 115V mode.
When operating in 230 V mode each of the ESP 4000's power supply inputs requires approximately 10 Amps max. This allows
a complete ESP4000 to be powered from one 20 A breaker at at 230 V.
The ESP4000 presents a dynamic load to the AC mains, which causes the amount of current to fluctuate depending on quiet
or loud operating levels. Since different cables and circuit breakers heat up at varying rates, it is essential to understand the
types of current ratings and how they correspond to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a period of at least ten seconds. It is used to
calculate the temperature rise in cables in order to select a cable size and gauge that conforms to electrical code standards. It
is also used to select the rating for slow-reacting thermal breakers.
The burst current is the maximum rms current during a period of approximately one second, used to select the rating of
most magnetic breakers and to calculate the peak voltage drop in long AC cables according to the formula: V pk (drop)= I
pk x R (cable total).
The ultimate short-term peak current is used to select the rating of fast reacting magnetic breakers. Use the table below as
a guide when selecting cable gauge size and circuit breaker ratings for your operating voltage.
