RMS power is continuous power that the amplifier is capable of outputting over long periods. Peak power is short-term power that an amplifier is capable of briefly outputting when faced with sudden, high-energy signals. Another power measurement that is very important for audio output is the Average Power Per Cycle of sine wave. ◾ Vpeak = Peak output voltage of amplifier ◾ R = Speaker load in Ohm ◾ Peak Power = (Vpeak)2 / R ◾ RMS Power = Power supply's RMS power ◾ Max Power Per Cycle = (Vpeak)2 / 2R Headroom is referred to an amplifier's ability to go beyond its rated average power (RMS or continuous power) for a short time in order to recreate loud or explosive audio signals that rise very quickly. In order to have high headroom (an ability to achieve loud peak levels without distorting), an amplifier must have a stiff power supply with a good amount of reserve energy on which it can call (stored in capacitors). The ability of the power supply to quickly recharge the capacitors is also very critical. A typical low frequency (50Hz for example) explosive sound consists of an attack followed by a series of rapidly decaying lobes of a 50Hz sine wave. Therefore, an amplifier with 140W peak power with 20ms holdtime is capable of providing 140W power to the 50Hz musical note (full cycle of 50 Hz is 20ms). A series of successive explosive sound might sounded very close to human ear, but their base notes are far apart enough (1 second = 1000 ms) for the amplifier to provide the required peak power. For most typical home listening, hardly more than 20W of power is consumed. Therefore, a good amplifier should provide sufficient RMS power and a high peak power with low distortion (NuForce's Amplifier is capable of generating the peak power at ultra low distortion of less than 0.05% THD+N).
The privacy statement on Optoma (hereinafter referred as “We”)’s website（http://http://nuforce.optoma.com）(hereinafter referred as “Website””) is the declaration of personal information protection. Due to the property of internet, We will inevitably interact directly or indirectly with visitor to our Website; therefore this declaration hereby explains what personal information we collect from Website visitors, the utilization of personal information and protection measures. Please ensure to read it carefully:
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The Coretronic Corporation is the world's largest manufacturer of optical projectors. In 2000, the company established the Optoma brand in England. Coretronic sales locations span the world and are prominent in the US, Europe,China, and Asia. Coretronic is the prime Taiwanese projector solution.
NuForce was a company of Hi-End speakers started in Milpitas, California. It owns the technology of developing Class D amplifiers and has received many awards from audiophile magazines in the US and Japan, which has made NuForce a leading brand in the audio systems market.
Audio is essential for a successful video. Optoma, a leading brand in DLP projectors, accomplished the integration of audio-visual entertainment systems when it acquired the US audio brand, NuForce, in 2014, giving Optoma the capability to provide music lovers a comprehensive experience of audio-visual entertainment.
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