Hertz HCP 4D 4 Channel Amplifier Hertz CK 165 6.5" Cento Series 2-Way Component Hertz CX 165 Cento 2-Way Coaxial Speakers bundle includes X1 Hertz Compact Power HCP-4D D-Class 4 Channel Amplifier 145 WRMS x 4 at 2-Ohm, X1 Hertz Cento Series CX165 6.5" Two-Way Coaxial Speakers (Pair), and X1 Hertz Cento Series CK-165 6.5" Two-Way Component Speaker Kit (Pair).

HCP-4D -
Compact Design Built from Extruded Aluminum Heatsink with the Top Side Ensuring Effective Transfer of Heat.
Special Balanced High-Noise Rejection Input Circuitry on the Pre-In or Speaker-In Inputs.
Speaker-In (For OEM Head Units) and RCA-In (For Aftermarket Head Units) Inputs.
Power supply voltage / fuse: 11 ÷ 15 VDC / 2 x 20 A
Idling current (power ON/OFF): 1.6 A / 0.04 mA
Remote In: 7 ÷ 15 VDC - 1 mA
ART: Automatic Remote Turn-On/Off with Speaker-In

CX165 -
Power Handling - Peak W: 210
Power Handling - Continuous W: 70
Impedance Ω: 4
Frequency response Hz: 55 ÷ 22k
Sensitivity dB SPL: 93
Woofer size mm (in.): 165 (6.5)
Tweeter size mm (in.): 24 (0.9)
Woofer Voice Coil Ø mm (in.): 25 (1)
Tweeter voice coil Ø mm (in.): 13 (0.5)

CK-165 -
Power Handling - Peak W: 285
Power Handling - Continuous W: 95
Impedance Ω: 4
Frequency response Hz: 55 ÷ 22,5k
Sensitivity dB SPL: 93
Voice coil Ø mm (in.): Woofer 25 (1)
Woofer size mm (in.): 165 (6.5)
Tweeter size mm (in.): 26 (1)

• Package Dimensions ‏ : ‎ 19 x 15 x 9 inches; 15 Pounds
• Date First Available ‏ : ‎ November 5, 2021
• Manufacturer ‏ : ‎ Hertz