MAESTRO PARAMETRIC FILTER SERVICE MANUAL ocr

ù Model MPF-320A 2500 Walden Ave. NORLIN MUSIC Buffalo, NY. 14225 (716) 681-7242 INTRODUCTION Electronic switches IC2C and IC2D select be­ tween the “Natural” signal from IC1B and the “Over- This manual provides servicing and parts infor­ drive” （distorted) signal from IC1A. The selected mation for the Maestro Parametric Filter manu­ signal is routed to IC3A. factured by Moog Music Inc., 2500 Walden Avenue, Buffalo, New York 14225. The Maestro Parametric IC3A adds pre-emphasis to the input signal. Filter is a tone control device for parametric equal­ IC3A has a gain of OdB from dc to 1kHz, a 6dB/ ization and controlled distortion for guitar, bass and octave gain increase from 1kHz to 10kHz and at other electro-acoustical signals. 10kHz gain levels off to 20dB. Input Impedance...............................1 megohm The output of IC3A feeds HEIGHT control at Maximum input level R33. The op

MANUAL NO。993«042337001 TECHNICAL SERVICE MANUAL for Gorlin) 2500 Walden Ave. NORLIN MUSIC Buffalo, N.Y 14225 (716) 681-7242 INTRODUCTION Electronic switches IC2C and IC2D select be­ tween the “Natural” signal from IC1B and the “Over- This manual provides servicing and parts infor­ drive” （distorted) signal from IC1A. The selected mation for the Maestro Parametric Filter manu­ signal is routed to IC3A. factured by Moog Music Inc., 2500 Walden Avenue, Buffalo, New York 14225. The Maestro Parametric IC3A adds pre-emphasis to the input signal. Filter is a tone control device for parametric equal­ IC3A has a gain of OdB from dc to 1kHz, a 6dB/ ization and controlled distortion for guitar, bass and octave gain increase from 1kHz to 10kHz and at other electro-acoustical signals. 10kHz gain levels off to 20dB. Input Impedance...............................1 megohm The output of IC3A feeds HEIGHT control at Maximum input level R33. The operation of R33 is easy to understand if a for 1% THD......................................... OdBm single resistor were connected to the wiper of R33. Natural mode with When the wiper of R33 is on the R32 side, the resistor HEIGHT control set to…