ISP Technologies STEALTH PRO POWER AMPLIFIER - Manual (Page 4)

STEALTH POWER AMPLIFIER TECHNOLOGY
The Stealth Power Amplifier is based on a new Power Amplifier Technology developed by ISP
Technologies. The Stealth uses ISP Technologies patented
“Dynamic Current Amplifier
Technology ” (D-CAT) controlled by a new patent pending “Adaptive Dynamic Amplifier
Technology” which provides a novel Class H power amplifier topology with improved efficiency
and Dynamic Voltage Multiplication. This allows the Stealth Power Amplifier to operate on a
low voltage19 volt DC power adaptor and provide extremely high output voltage swing well in
excess of the 19 volts DC.
The graph below shows the output voltage waveform and adaptive power supply rails. At low
power the Stealth operates as a normal class A-B power amplifier. When the output signal
approaches the nominal 19 volt power supply rail, the Dynamic Adaptive Amplifier Technology
provides two functions: a dynamic multiplication or lifting of the power supply rails and an
adaptivly tracking power supply where the power supply rails will continuously track the output
signal within a fixed ratio. The net result is a class A-B power amplifier with excellent sonic
performance and very musical clipping charecteristics with greatly increased power efficiency
and higher output voltage swing.
STEALTH POWER AMPLIFIER OPERATION
The Stealth power amplifer is designed to operate like any other power amplifier with a line
level input signal and allow operation in Stereo or Mono Bridge mode. The Stealth amplifier
ships with an external switch mode power adaptor, which connects to normal AC power. The
supplied Power Adaptor will operate between 100 VAC and 240VAC input and will connect to
the Stealth Power connector providing 19VDC @ 7.9 amps output power for the Stealth. Do
not attempt to power the Stealth with any other power source than the one supplied from ISP
Technologies. On power up, the Stealth will mute all outputs for a Turn On time of
approximatly 4 seconds. If power is removed the Stealth will instantly mute the output before
any audible pop can occur. Connect the Stealth into your system as shown below for either
Stereo or Mono operation. For high power rigs multiple Stealth Power Amplifiers can be used
with multiple speakers. NOTE: The minimum load impedance allowed in Stereo Operation is 4
ohms and the minimum allowed load impedance in Mono Bridged mode is 8 ohms. If lower
load impedance is used the Stealth will shut down when the demand for current exceeds the
maximum allowed in each configuration. If shutdown occurs check your speaker load
impedance.