SI-663/R IN-WALL LCR SPEAKER
The reference version of the SI-663, the SI-663/R is designed for demanding custom installations where a center channel cannot be used or is
intentionally removed for design considerations. When wired for dual channel operation, a pair of the SI-663/R reference in-wall speakers can provide a
discrete and dedicated center channel from the left and right speakers. When three SI-663/Rs can be used, the trio wired in singlechannel configuration,
can provide a seamless, reference level front sound stage from their covert in-wall locations.
Model Name: ... SI-663/R
Series: ... Signature Reference In-wall
System Type: ... In-wall/LCR Dual 2-way Speaker
Frequency Response: ... 50Hz-20kHz (±3dB)
Sensitivity: ... 90dB Main, 88dB Center, and
92dB Combined (2.83V @ 1 Meter)
Recommended Power: ... 75-225 Watts Main, 75-175 Watts Center and
75-450 Watts Combined
Drive Units: ... (3) 6-1/2" (165mm) Reference Aluminum Cone Woofers
(2) 1.1" (28mm) Reference Silk Dome Tweeters
Tweeter Protection: ... Yes
Swivel Tweeter(s): ... No
Crossover Frequency: ... 2,700 Hz
Crossover Slope: ... 12dB/Octave
Impedance: ... 8 Ohms Main, 6 Ohms Center and
4 Ohms Combined
Cabinet Material/Color: ... Medium Density Fiberboard (MDF)/Black
Cabinet Finish: ... Black Enclosure
Baffle and Grille: ... Baffle Black; Grille Black or White.
Enclosure Sold Separately.
Baffle Dimensions: ... 8" W x 32" H
(203mm W x 812mm H)
Enclosure Dimensions: ... 14" W x 56" H x 3-1/2" D
(356mm W x 1422mm H x 89mm D)
