Aion Electronics PRISM 매뉴얼 - 페이지 2

{카테고리_이름} Aion Electronics PRISM에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Aion Electronics PRISM 9 페이지.

1 Project Overview

2 Introduction & Usage

INTRODUCTION

The Prism FET Amplifier is a pedal conversion of the obscure but highly sought-after BOSS

Amplifier. The original, which was manufactured from 1980 to 1984, was an always-on effect that

clipped to your belt and ran on a 9-volt battery.

It's a solid circuit, but the non-standard implementation prevented it from getting much attention-

although it was famously used by The Edge which caused vintage prices to skyrocket.

The Prism is the same circuit in an alternate format, converting it to a standard pedal with a footswitch,

LED and 9V adapter jack.

The original FA-1 used the long-obsolete HA1457W chip, which is a single version of the LM1458 (as

evidenced by the similarity of "1457" and "1458", and similar datasheet specifications). For the updated

version of the Prism, extensive A/B testing was done to verify that the LM1458 performs exactly the

same as two HA1457Ws and is sonically indistinguishable.

As a result, this new version eliminates the option to use the HA1457W and only supports dual op-

amps. However, the

HA1457W.

USAGE

The Prism has the following controls:

• Treble and Bass form a Baxandall EQ allowing for adjustment of the respective frequencies.

• Volume controls the overall output of the effect, from zero to approximately 26dB of gain.

• Low Cut toggle engages a filter that cuts bass frequencies below 200 Hz at -6dB/octave.

PRISM FET AMPLIFIER

previous version of the Prism

9 Licensing

is still available if you really do want to use the

FA-1 FET

TABLE OF CONTENTS