Niles HD8R Installation & Operation Manual page 23

Specifications
Model HD8
Driver Compliment
8" Injection-Molded TCC Woofer with
Custom Debris Screen, Butyl Rubber
Surround, High BL Magnet Structure with
Vented Pole Piece
1" Teteron Tweeter Housed in a Low
Diffraction Precision
Mechanism
Design Principle
Infinite baffle for large and varying air
volumes
Recommended Amplifier Power
Ten to One Hundred Fifty Watts per
Channel
Nominal Impedance
6 Ohms
Frequency Response
40 Hz to 21,000 Hz, plus or minus 3dB
(on axis)
Dispersion Pattern
90 degrees Horizontally or Vertically
(plus or minus 5dB)
Sensitivity
90 decibels for 2.83 volts of Pink Noise,
measured at 1 meter on axis
Overall Exterior Frame Dimensions
10-3/16" x 14-1/4" (25.9 cm x 36.2 cm)
Depth Behind Wall
3-1/8" Deep (assumes 1/2" drywall)
7.9 cm
Wall Cut-Out Dimensions
9-1/8" x 13-1/8" (23.2 cm x 33.3 cm)
Wiring Requirements
We recommend 16 to 18 gauge stranded
wire for up to 80 feet, 14 gauge stranded
wire for up to two hundred feet.
Connectors accommodate 12 to 18 gauge
stranded wire.
Model HD8.3
Driver Compliment
8" Injection-Molded TCC Dual Drive
Woofer with Hyperbolic Dispersion
Stabilizer, Custom Debris Screen, Butyl
Rubber Surround, High BL Magnet
Structure with Vented Pole Piece
1" Teteron Tweeter Housed in a Low
Adjustment
Diffraction
Mechanism
Design Principle
Infinite baffle for large and varying air
volumes
Recommended Amplifier Power
Ten to One Hundred Fifty Watts per
Channel
Nominal Impedance
4 Ohms
Frequency Response
40 Hz to 21,000 Hz, plus or minus 3dB
(on axis)
Dispersion Pattern
90 degrees Horizontally or Vertically
(plus or minus 5dB)
Sensitivity
91 decibels for 2.83 volts of Pink Noise,
measured at 1 meter on axis
Overall Exterior Frame Dimensions
10-3/16" x 14-1/4" (25.9 cm x 36.2 cm)
Depth Behind Wall
3-1/8" Deep (assumes 1/2" drywall)
(7.9 cm)
Wall Cut-Out Dimensions
9-1/8" x 13-1/8" (23.2 cm x 33.3 cm)
Wiring Requirements
We recommend 16 to 18 gauge stranded
wire for up to 80 feet, 14 gauge stranded
wire for up to two hundred feet.
Connectors accommodate 12 to 18 gauge
stranded wire.
Precision Adjustment
22