aion Minima Посібник - Сторінка 2

Переглянути онлайн або завантажити pdf Посібник для Музична педаль aion Minima. aion Minima 10 сторінок. Resonant filter

1 Project Overview

2 Introduction & Usage

INTRODUCTION

The Minima Resonant Filter is based on the Mu-tron Micro V envelope filter, designed by Mike Biegel

and first released in the mid-1970s as a lower-cost alternative to the Mu-tron III.

The Micro V has a very practical origin story. The original Mu-tron Phasor (now referred to as the

Phasor I) used CA3080 OTAs for the phase stages. When this was discontinued in favor of the more

popular Phasor II, the company had a lot of surplus CA3080 chips and no active products that used

them. At the same time, they realized they didn't have any low-cost pedal offerings. The Micro V was

designed with the goal of filling both needs.

The end result is a similar effect to the Mu-tron III, but with a completely different circuit topology.

It was discontinued in 1980 along with the other pedals in the Mu-tron lineup not long after the

company's sale to ARP.

The Minima is a slightly expanded version of the original Micro V circuit. The two fixed resistors that set

the attack and release of the envelope detector have been made variable, and we've added a third in-

between position to the "Hi/Lo" switch. It also replaces the CA3080 with the LM13700, which performs

identically but is much easier to find.

USAGE

The Minima has the following controls:

• Range sets the reaction of the filter in response to the input signal. As it's turned up, it's much more

sensitive and responds more quickly.

• Attack sets the time constant of the filter's rise to the peak frequency.

• Decay sets the time constant of the filter's fall back to the resting state.

• Frequency (toggle switch) selects the frequency range of the filter, with Low and Hi settings as well

as an in-between Mid.

MINIMA RESONANT FILTER

10 Licensing

TABLE OF CONTENTS