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ATI preamps use the 5533 IC, which has a 35 mA peak output current and can drive the equalizer with full rail to rail output swings at its rated internal slewing rate of 13 volts per microsecond.
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However, previous attempts ay “Rumble Filters” noticeably rolled off low frequency audio and had to be switched out most of the time. Your P100S preamp incorporates an active, tow pole subsonic filter bridged around the RIAA feedback equalizer. This filter follows the RIAA curve within .5 dB down to approximately 28 Hz, rolls off only 6 dB at 20 Hz then...
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Plug cartridge leads into the phone jacks. Convention is white for left channel, red or black for right channel. Your Encore preamp is decorated with more beads that Bo Derek (Who?). Well our beads are ferrite and although we don’t have nearly the movie stars capacity, what we do have is tuned for good FM and AM rejection.
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MAINTENANCE Power supply voltages are + and – 15VDC nominal. IC output DC Voltages under no signal, shorted input conditions should remain with .1V of ground. Greater deviation is an indication of IC or circuit problems. MODIFICATIONS 230 VAC OPERATION Your preamp is wired for 115 VAC, 50/60Hz operation unless otherwise requested at the time of ordering.
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