Onkyo HT-R391 Instruction Manual page 72

Specifications
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Passive Subwoofer (SKW-391)
Type Bass-reflex type Passive subwoofer
6 Ω
Impedance
Maximum input power 130 W
Sensitivity 83 dB/W/m
Frequency response 30 Hz to 150 Hz
Cabinet capacity 0.88 cubic feet (25 L)
Dimensions (W × H × D) 11-5/8" × 13-9/16" × 14-1/2"
(295 mm × 345 mm × 368 mm)
(incl. projection)
Weight 14.1 lbs. (6.4 kg)
8" (20 cm) Cone × 1
Drivers unit
Terminal Spring type color coded
Other Non-magnetic shielding
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Front Speakers (SKF-391)
Type Full Range Bass-reflex
6 Ω
Impedance
Maximum input power 120 W
Sensitivity 80 dB/W/m
Frequency response 80 Hz to 20 kHz
Cabinet capacity 0.039 cubic feet (1.1 L)
Dimensions (W × H × D) 4" × 7-7/8" × 4-1/2"
(101 mm × 200 mm × 114 mm)
(incl. grille and projection)
Weight 1.5 lbs (0.7 kg)
3-1/4" (8 cm) Cone × 1
Drivers unit
Terminal Spring type color coded
Keyhole slot Available
Grille Fixed
Other Non-magnetic shielding
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Center Speaker
SKC-391 (North American and Brazilian)
Type Full Range Bass-reflex
6 Ω
Impedance
Maximum input power 120 W
Sensitivity 80 dB/W/m
Frequency response 80 Hz to 20 kHz
Cabinet capacity 0.064 cubic feet (1.8 L)
Dimensions (W × H × D) 9-7/16" × 4" × 4-3/4"
(240 mm × 102 mm × 121 mm)
(incl. grille and projection)
Weight 1.8 lbs (0.8 kg)
3-1/4" (8 cm) Cone × 1
Drivers unit
Terminal Spring type color coded
Keyhole slot Available
Grille Fixed
Other Non-magnetic shielding
SKC-391C (Asian)
Type Full Range Closed Box
6 Ω
Impedance
Maximum input power 120 W
Sensitivity 84.5 dB/W/m
Frequency response 80 Hz to 20 kHz
Cabinet capacity 0.064 cubic feet (1.8 L)
Dimensions (W × H × D) 9-7/16" × 4" × 4-3/4"
(240 mm × 102 mm × 121 mm)
(incl. grille and projection)
Weight 2.9 lbs (1.3 kg)
3-1/4" (8 cm) Cone × 2
Drivers unit
Terminal Spring type color coded
Keyhole slot Available
Grille Fixed
Other Magnetic shielding
En-4
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Surround Speakers (SKR-391)
Type Full Range Bass-reflex
6 Ω
Impedance
Maximum input power 120 W
Sensitivity 80 dB/W/m
Frequency response 80 Hz to 20 kHz
Cabinet capacity 0.039 cubic feet (1.1 L)
Dimensions (W × H × D) 4" × 7-7/8" × 4-1/2"
(101 mm × 200 mm × 114 mm)
(incl. grille and projection)
Weight 1.5 lbs. (0.7 kg)
3-1/4" (8 cm) Cone × 1
Drivers unit
Terminal Spring type color coded
Keyhole slot Available
Grille Fixed
Other Non-magnetic shielding
Specifications and appearance are subject to change
without prior notice.
Note
For non-magnetic shielded speakers:
Try moving the speakers away from your TV or monitor. If
discoloration should occur, turn off your TV or monitor,
wait 15 to 30 minutes, and then turn it back on again. This
normally activates the degaussing function, which
neutralizes the magnetic field, thereby removing any
discoloration effects.