These SpeakerCraft AIM speakers are designed to deliver high-quality rear-channel sound. The speakers measure 17.4 inches high by 9.3 inches wide by 3.3 inches deep. The cutout dimensions of the SpeakerCraft AIM Cinema Dipole Three speakers are 15.6 inches high by 7.5 inches wide. The rear speakers feature front-mounted switches that allow for up to ± 3 dB of bass and treble adjustment. There are also front-mounted switches for dipole and the QFX configuration on the SpeakerCraft AIM speakers. The sensitivity of the SpeakerCraft AIM Cinema Dipole Three speakers is 82 dB. The speakers have 8-Ohm impedance. Frequency response of the rear speakers ranges from 50 Hz to 20 kHz. Each of the speakers features two 5.3-inch aluminum cone woofers with phase plugs. There are also two pivoting 1-inch aluminum dome tweeters. Those who want rear speakers that can be mounted within the wall are sure to appreciate these quality SpeakerCraft AIM speakers.