Norlin Music - Maestro Fuzz MFZ-271A - Effect Processor
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Equipment:
Maestro Fuzz MFZ-271A
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Information
The Maestro Fuzz generates low order harmonic distortion for
guitar, bass and other electroacoustical music signals.
Specifications for the Maestro Fuzz include:
Input Impedance........1 megohm
Maximum Recommended
Input Level..........OdBm
Output Impedance......20K ohms (maximum)
Maximum Output Level . . + 5dBm Equivalent Input Noise ... -
1OOdBm
Type of Distortion......Low order odd
harmonic
Power Requirements.....9.0 VDC at
250 microamperes
Recommended Battery
Type...............NEDA 1604
Estimated Battery Life ... 3 months
CIRCUIT DESCRIPTION
The Maestro Fuzz, powered by an internal 9 volt battery,
generates low order odd harmonic distortion by using silicon
diodes in the feedback circuit of an operational amplifier.
Refer to Figure 3 for the schematic diagram.
Either the fuzz mode or straight guitar is selected by foot
switch SW1. In the fuzz mode, the input signal from AXE jack
J2 is a-c coupled to inverter IC1A, the output of which
feeds DRIVE pot R6. Since the distortion circuit following
R6 is level sensitive, R6 acts as a distortion amount
control. The distortion circuit consists of IC1B, CR2 and
CR3. Diodes CR2 and CR3 in the feedback path of IC1B cause
symmetrical clipping of the input waveform generating the
desired distortion. The distorted signal is a-c coupled to
VOLUME pot R9 which controls the Maestro Fuzz output level.
In the straight mode, SW1 shorts the Maestro Fuzz output to
ground minimizing fuzz circuit bleed-thru and the input
signal is connected directly from AXE jack J2 to AMP jack J1.
1 Manual
Service manual
Manual type:
Service manual
Pages:
8
Size:
4.9 MB
Language:
english
Revision:
Manual-ID:
993-040657-001
Date:
Quality:
Scanned document, all readable.
Upload date:
Aug. 19, 2017
MD5:
2f413d24-6ed1-b443-8c28-27ce6a8fcb9a
Downloads:
446