ETC DN7.5-2650-5 Donut, 7.5-Inch / 190-Millimeter and 3.5-Inch / 89-Millimeter Aperture (For XDLT 26 And 50) - Silver 100712110 Phase Response: 700 Hz –

Phase Response: 700 Hz – 17 kHz ±30°

From the critically acclaimed M-Series

d&b audiotechnik E12 12-Inch Passive Loudspeaker - Weather-Resistant

Output SPL: 106dB = +2

ETC DN7.5-2650-5 Donut, 7.5-Inch / 190-Millimeter and 3.5-Inch / 89-Millimeter Aperture (For XDLT 26 And 50) - Silver 100712110 Phase Response: 700 Hz –ETC DN7. 5 2650 5 Donut, 7. 5 Inch 190 Millimeter and 3. 5 Inch 89 Millimeter Aperture (For XDLT 26 And 50) Silver Donuts help sharpen gobo projections by reducing the diameter of the output lenses. Similar to squinting an eye, this reduction helps improve clarity of the projected gobo, however a reduction in brightness is a side effect.