EEEngine delivers incredible power while preserving sound quality - Combines highly efficient driving function with tremendous power conservation
EEEngine overcomes the problem existed in the conventional power amplifier system while providing advantages in all areas, offering a dramatic leap in power amplifier design. It realizes efficiency that matches Class D without compromising the sound quality of a Class AB amplifier. Furthermore, EEEngine solves all of the problems of weight, size, and heat generation that users of large-output power amplifiers often encounter.
EEEngine tracks the audio signal to always provide the minimum power needed for the final output stage, allowing for surprising improvement in efficiency. It utilizes Class D operation to provide the power at the final output stage of Class AB operation. Almost all of the current energy is outputted as the audio signal, and just a small fraction of the remaining energy is emitted as heat dissipation through the heat sink.
With the final output stage operating at Class AB, the output signal is of remarkably high sound quality. The signal remains analog from input to output, without being converted to a PWM signal. There is none of the deterioration of frequency response and damping factor found with Class D systems. Plus, EEEngine is designed to operate perfectly while keeping the power amplifier heat generation to a minimum, regardless of the load requirements. All together, you get Class AB sound quality with efficiency that matches Class D.
Figure 1: EEEngine operational waveform
Figure 2: EEEngine technology block diagram
This arrangement ensures efficient and highly accurate power amplification even when input signal amplitude rises steeply
Keeps up with sharp increases in sound
EEEngine’s auxiliary power supply works with the main power supply to always drive at just the right power current to obtain maximum output, providing a high following capability even when there are steep increases in sound. This reduces power consumption while maintaining the special features of a “fast amp.” Plus, even when driving the fast auxiliary power supply in this method at ample voltage, power provided from the main power supply unit is very efficient at normal times, reducing the average current value and dramatically improving power loss.
Figure 3: Efficiency comparison data (power consumption vs. output)
Improved parts life and reliability
In addition to its tremendous improvements in efficiency and preservation of great sound quality, EEEngine plays yet another important role. It is often said that a power amplifier’s parts will last twice as long if the internal temperature is reduced by 10 degrees Celsius. EEEngine’s heat generation during usage is 35% less than previous systems, contributing greatly to improvements in durability and reliability.
Figure 4: Efficiency comparison data (heat generation level vs. output)
