Aphex 1788A - 8 Channel Microphone Preamplifier + FREE SHIPPING!!! - $765 - (Rexburg, ID)

Aphex 1788A - 8 Channel Microphone Preamplifier. Total of 16 Available. All are in GREAT Working Condition!!! Easily transported sizeThe Model 1788A contains eight preamps in 2RU space. Since there is a fair amount of heat dissipation, there should be at least 1RU spacing between every preamp. In that configuration, they may be stacked to provide 40 channels of high-quality preamps in a standard 16RU road case.Microphone output limiterAll preamps have a maximum input level. Once that level is exceeded, there is no way to remove that very unpleasant distortion. To avoid that occurrence, many engineers set the preamp, so the expected peak level at maximum sound level is still at least 12dB below the clip point. While this provides some insurance against the preamp clipping, it causes a loss of noise performance and, in the case of digital, a loss of resolution. The Model 1788A has a unique limiter (patent pending) in the front end of the preamp, which limits the output level of the microphone by as much as 20dB. Hence the name, Microphone Output Limiter. This allows the engineer to get maximum noise performance and also allows maximum resolution for an analog to digital converter, all without worrying about crashing the preamp. The Model 1788A has 39dB of adjustable input gain and fixed gain of 26dB for a total maximum gain of 65dB. The 26dB pad allows a preamp to be run as a unity gain buffer stage. For example, this allows the line-level output of a wireless mic receiver to be fed into the preamp.Adjustable maximum output levelThe maximum output level of the Model 1788A is +24dBm (loaded into 600 ohms) balanced. There are, however, many input stages which have odd maximum input levels (e.g. -+18dBu). To retain the function of the microphone limiter and maximize noise performance of the entire audio system, the Model 1788A has output level trim of up to 24dB. Once the maximum input level of the device following the Model 1788A is defined, the output level of the 1…

Posted in Rexburg, ID, Music Instruments
From ebay.com - 1 month ago