Test Conditions And Notes - Infinity 5760a Reference Series Service Manual

Power Amplifier
• 4-Channel Operation
• Advanced MOSFET Oversized Floating Rail Power Supply
Floating Ground Factory - Head - Unit Speaker - Level input
•
Variable lnput Sensitivity (250mV
•
• Fully Complementary Output Stage with Class-A6 Voltage Amplification
• Gold-plated Power, lnput and Output Connectors
• 2-Ohm Stable (Stereo)
• All tests to be done, unless otherwise specified, from 10Hz to 47KHz and 302Hz
at 14.4V DC into 4 ohm loads and adjust the units gain so that with a .775 volt
input signal the unit is at Its maximum rated output. All measurements will be
done using an Audio precision system one and the supply voltage.
An A+ line voltage of 14.4V DC shall be applied to the unit under test for all
•
measurements unless otherwise specified. The voltage applied to the unit shall
be measured at the power connection on the Amplifier.
Signal Source
•
Unless otherwise specified, all tests shall be conducted with the Audio Signal
Generator output configured to be balanced, less than or equal to 50 ohm source
impedance, and floating. The signal source "GND" shall be connected to the
Amplifier PWR GND at the Amplifier.
Output Load
•
Unless otherwise specified, all tests shall be conducted with 4 ohm resistive
loads having less than 10% reactive components at any frequency below 47KHz
and 302Hz. Each resistor shall have a value that remains within 1 % while
dissipating the rated output of the unit under test.
Power Indicator Green LED steadily illuminates for normal operation. Illuminates
•
up Red LED blinks when protection circuitry is engaged, and during power up.
Features
6V)
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Test Conditions and Notes

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Ref5760a