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http://www.stollaudio.ch/

http://www.stoll-speakers.ch/

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Acoustic Pixel Technology APT – Smaller transducers in a high density configuration bring power and flexibility.
Transducer density is the key to an effective and loud speaker system. Stoll Convertible uses many smaller drive-units. Together they reproduce the signal into its true acoustic form for both forms of radiation. Neighbouring Wave Field Synthesis technologies, APT integrates high output and sound quality with the flexibility to control dispersion.

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