The speaker shall be a bass-reflex 5" (12cm) cone type, with a balanced-dome tweeter, suitable for ceiling and wall mounting. Input impedance shall be easily adjustable with rotary switch on the upper side of the speaker.
The speaker shall include a transformer having multiple taps (5W, 10W, 15W, 20W, 30W at 100V and 70V, and 8ohm) adjustable. The output sound pressure level at a distance of 1m with a 1W input level applied shall be 91 dB SPL. The speaker shall have a frequency response of 70 – 20,000Hz (-20dB).
The speaker enclosure shall be constructed of HIPS resin. The grille shall be constructed of surface-treated steel plate net. The speaker shall be available in off-white color, and shall be easily repaintable. The unit shall have dimensions of ø186 x 369 (H) mm (ø7.32” x 14.33”), and a weight of 2.1 kg (4.63 lbs.).