Celestion - Guitar, Bass & Pro Audio Speakers PA Speakers & Guitar Loudspeakers - Celestion offer a wide range of world-renowned PA speakers & guitar loudspeakers. Browse our full range of speakers online Celestion design, develop and manufacture premium guitar speakers and bass speakers, as well as high-quality professional audio loudspeakers and compression drivers for sound reinforcement. These renowned speakers are used onstage and in clubs, theatres and other venues the world over.