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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9

Open-back Cabinet
A type of speaker cabinet - typically used in combo guitar amplifiers - that does not have a sealed or a closed enclosure. As the name implies, the back of the cabinet is completely or partially open. This allows sound to emerge from the cabinet from both the front and the rear, which can help with dispersion but can reduce the efficiency of the speaker, particularly at low frequencies.

Obeche

Oberheim OB-X

Oblique Room Mode

Occlusion

Octave

Octo Bass

Odd-order Harmonic Distortion

OEM

OFC

OFC

Off-Axis

Off Line

Offset

Ogg Vorbis (.ogg)

Ohm

Ohm's Law

Okoume

OLED

OMF (OMFI)

Omnidirectional

Omni Mode

OMS

On-Axis

Onboard

One-off

One-shot Sample

Online

Op Amp

Opcode

Open

 Open-back Cabinet

Open-voice Triad

Open Air

Open Back

Open Chord

Open C Tuning

Open Mic

Open Source

Open String

Open TL

Open Tuning

Open Voicing (or Spread Voicing)

Opera Buffa

Operating System

Operator

Optical

Optical Compressor

Optical Media

Opto-isolator

Orange Book

Oratorio

Orbiter

Orchestra

Orchestrion

Orchestrions

Organ

ORTF

Orville Gibson

OS

OSC

 Oscillator

Oscillator Sync

Oscilloscope

Ossicles

Ostinato

OS X

OTB

OTP

Out

Out

Out of Phase

Out Of The Box

Output

Output Jack

Ovangkol

Overdrive

Overdub

Over Easy

Overheads

Overload

Over(s)

Oversampling

Overshoot / Undershoot

Overtone

Overture

Overview

OXFW911

Oxide

Oxygen-free Copper

     
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