The 165 RO PRO is easy to fit, all you have to do is make a perfectly round hole 209 mm in diameter, but to help you out, a paper model is supplied with all the speakers.
Next, simply remove the protective magnetic grille. Once the grille has been removed and the loudspeaker wired (either by soldering or by terminal block), all you need is a Phillips-head screwdriver. All you have to do is turn the 4, 6 or 8 screws (depending on the model), so that small hooks clamp the speakers in place.
The JBL CSS 8018 is a passive in-ceilling, 2-way, 8" loudspeaker with up to a total of 20W with a built-in 100V / 70V / 25V transformer, sensitivity 97dB and it has 50Hz-17kHz frequency response. The installation depth is 73mm and the ceiling cutout diameter is 216mm.
The Modern Acoustics V6CA is a passive in-ceilling, 2-way, 6.5" loudspeaker with up to a total of 25W at 8Ω with a built-in 100V transformer with tappings for 20 / 10 / 5W, sensitivity 91dB and it has 55Hz-10kHz frequency response. The installation depth is 75mm and the ceiling cutout diameter is 180mm.
Focal Littora 1000 ICW8, indoor/outdoor, in-wall/in-ceiling coaxial loudspeaker with 8 inch speaker driver and Beryllium tweeter for use in yachting and humid spaces. The recommended amp power is between 50 – 180W at 8Ω with 91dB sensitivity and 45Hz-40kHz frequency response.
TruAudio GPW-6 Ghost 2-way in-wall speakers with 6.5" woofer and 1" tweeter. Perfect for any room size with exceptional stereo imaging and clean frameless design.