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AHB2 - Lab Report - Oh Hyeonil - Studio51, Sinlyul Lee Ph.D. - Sonicast

AHB2 - Lab Report - Oh Hyeonil - Studio51, Sinlyul Lee Ph.D. - Sonicast

by Benchmark Media Systems September 01, 2018

Audio Precision APx555 with an AudioGraph Active LoadBox

The Benchmark Media AHB2 showed the highest level of audio performance in all metrics. Despite being a half-rack-sized compact product, it provided a constant voltage across a wide range of loads. In stereo mode, it performed well into a 1Ω impedance load at phase angles of 0, ± 30, and even ± 60 degrees which is a very harsh operating environment. The amplifier is ideally suited low-impedance and phase-shifted loudspeakers, which are commonly referred to as "hard-to-drive speakers."

In SNR and THD measurements are very impressive, exceeding some of the measurement limits of the best measurement equipment available. The stereo-mode output of 100 W into 8Ω and 400 W into 2Ω is more than sufficient output under most conditions. If you need more power, you can use the bridged-mono mode.

- Oh Hyeonil, Studio51

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