Description

The response differences of various full-range drivers within a 10° listening window is investigated. Different speaker toe-in is used. The graphs are based on this data.

Measurements

1. Dayton PS220-8 (8", with whizzer and phase plug) – 0°(±5°), 5°(±5°), 10°(±5°)

Dayton PS220-8

3. SEAS FA22RCZ (8", with whizzer) – 0°(±5°), 5°(±5°), 10°(±5°)

SEAS FA22RCZ

2. Markaudio Alpair 7.3 (4", no whizzer) – 0°(±5°), 5°(±5°), 10°(±5°), 15°(±5°)

Markaudio Alpair 7.3

4. Tymphany TC9FD18-08 (3.5", no whizzer) – 0°(±5°), 5°(±5°), 10°(±5°), 15°(±5°)

Tymphany TC9FD18-08

Discussion

The smallest response differences within the listening window are observed at 0° (±5°) for all drivers. The larger the driver the larger the response differences become off-axis.