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Electronics / Elektronik |
| PHA1 Details | |
 Frequency responce at 40 dB gain |
 Frequency responce at 60 dB gain |
| Circuit
Solution The choosen circuit is a fully balanced solution with two mono amplifiers. They are DC coupled with servo adjustment of any offset. Inputs both from RCA and XLR input is feed to the input of the amplifier. A requirement during development was to have all switches controlling the amplifier on the front and not hidden at the back at the bottom. This requiremet lead to a design with mos-switches that operate the amplifier and only relays in input and output circuit. Muting are done during change of settings to avoid any noise from reaching the power amplifier. |
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| The
principal schema shows the symetrical structure of the amplifier. There
are 2 identical amplifiers in each unit. |
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