In acoustically small rooms the naturalness of low frequency reproduction may differ between dipolar and monopolar radiating woofers. The coupling of the two types of sources to the modal structure of the room is investigated using steady-state frequency response, cumulative spectral decay, energy-time curve, modulation transfer function and tone burst response. When sets of shaped tone bursts are used for measurement and listening, both frequency and time domain attributes are brought to light which point to the perceived differences.
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