aion Lumitron Manual - Page 2
Browse online or download pdf Manual for Music Pedal aion Lumitron. aion Lumitron 11 pages. Resonant filter
Print PageTABLE OF CONTENTS
1 Project Overview
2 Introduction & Usage
INTRODUCTION
The Lumitron Resonant Filter is an adaptation of the Musitronics Mu-tron III, designed by Mike Biegel
and originally released in 1972.
The Mu-tron III was the very first commercial envelope filter pedal, also called an autowah, using
optocouplers to dynamically control a series of frequency filters based on the level of the input signal.
The vocal-like effect was quickly embraced by musicians and soon became a characteristic effect of
entire genres, particularly funk. Notable Mu-tron III users include Bootsy Collins on bass, Jerry Garcia
on guitar, and even Stevie Wonder, who used it on a Clavinet.
Musitronics was sold to ARP in 1979, who produced the pedals until 1980. Mike Biegel later contracted
with Electro-Harmonix to release an updated version of the circuit in 1995, called the Q-Tron, as well as
the Bi-Filter rack unit with expanded features. The original Q-Tron was later adapted as the Mini Q-Tron,
Micro Q-Tron, and Q-Tron+, the latter two of which are still in production.
In 2019, the Mu-tron brand was resurrected with Mike Biegel once again designing new effects. The
Micro-Tron IV is an updated version of the Mu-tron III, with modernized circuitry, CV input and output,
and swappable optical modules for different reaction times and filter characteristics.
The Lovetone Meatball (available as our
expanded feature set. If you wish the Lumitron had a lot more knobs and switches, it's worth a look.
USAGE
The Lumitron has three knobs and three switches:
• Gain boosts the signal level at the input, which drives the envelope detector as well as the main
audio signal path.
• Peak is a feedback control that sets the sharpness or intensity of the filter.
• Volume is the output volume of the effect, which compensates for high input gain levels.
• Filter (toggle switch) selects the filter type. LP (lowpass) accentuates lows. BP (bandpass) cuts lows
and highs while accentuating the peak frequency. HP (highpass) accentuates highs.
• Drive (toggle switch) selects the direction of the sweep. "Up" starts with a hi-cut and adds highs
with the intensity of the signal. "Down" starts with a low-cut and adds lows with the intensity.
• Range (toggle switch) sets the input frequency of the envelope detector. "Lo" is more sensitive to
bass signals while "Hi" is more sensitive to treble signals.
LUMITRON RESONANT FILTER
11 Licensing
Spectron
project) was based on the Mu-tron III with a greatly
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