Specifications, Troubleshooting, System Type, Sensitivity

Specifications

Model:	SI-663	SI-663/R

System Type:	In-wall/LCR Dual 2-way Speaker	In-wall/LCR Dual 2-way Speaker

Frequency Response:	50Hz-20kHz ±3dB	50Hz-20kHz ±3dB

Sensitivity:	90dB Main, 88dB Center and	90dB Main, 88dB Center and
	92dB Combined (2.83V @ 1 Meter)	92dB Combined (2.83V @ 1 Meter)

Recommended Power:	75-200 Watts Main, 75-150 Watts	75-225 Watts Main, 75-175 Watts Center
	Center and 75-400 Watts Combined	and 75-450 Watts Combined

Woofers:	Three 6½” (165mm) Aluminum Cone	Three 6½” (165mm) Reference Aluminum Cone

Tweeters:	Two 1” (25mm) Silk Dome	Two 1” (25mm) Reference Silk Dome

Crossover Frequencies:	3,000Hz	3,000Hz

Crossover Slope:	12dB/Octave	12dB/Octave

Impedance:	6 Ohms Main, 6 Ohms Center and	6 Ohms Main, 6 Ohms Center and
	4 Ohms Combined	4 Ohms Combined

Cabinet Material:	Medium Density Fiberboard (MDF)	Medium Density Fiberboard (MDF)

Cabinet Finish:	Black	Black

Baffle and Grille:	Baffle Black; Grille Black or White.	Baffle Black; Grille Black or White.
	Enclosure sold separately.	Enclosure sold separately.

Baffle Dimensions:	Baffle: 8” W x 32” H	Baffle: 8” W x 32” H
	(203mm W x 812mm H)	(203mm W x 812mm H)

Finished Dimensions:	14” W x 56” H x 3-1/2” D	14” W x 56” H x 3-1/2” D
	(356mm W x 1422mm H x 89mm D)	(356mm W x 1422mm H x 89mm D)
Weight:	59 lbs. (26.76 Kg)	61 lbs. (27.67 Kg)

Situation:	Probable Cause:	Solution:
No sound from	Speaker wire not	Make sure wire is connected at
speakers	connected	both the speaker and the ampli-
		fier observing proper polarity

No sound from	Speaker selector on	Activate proper selector on
one speaker	amplifier is not on	amplifier
	Balance control on receiver	Place balance control in the
	or pre-amp is not centered	center
	Speaker wire not	Check all connections at amplifier
	securely connected	and speakers

Very little bass	Speakers are wired	Check entire system for proper
and/or imaging	out of phase	polarity and make adjustments as
		necessary