APCT Design.
Compact size0 infra subwoofer.

TETHRA has got all qualifications for DIVA and for you. Make it become your beloved tool.
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Size to impulse response technology included.

Software adjustable frequency response from sub to infra sub. You simply select a preset.
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Full self contained extraordinary compact size, exceptional SPL.

This is what you need to have even at the smallest footprint a full infra sub sound.
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