Hertz SP 4.500 SPL Show Class D 4 Channel Amplifier

Ch: 4 – 3 – 2 | 600 W
SP 4.500 features Hertz ADC (Advanced D-Class) output stage, reaching up to 87% efficiency and delivering an impressive power rating of 90 x 4 (4) W RMS or 300 W x 2 (4) W RMS when bridged, with an ultra-compact size of 192.7 (7.58) x 130 (5.1) mm (in.) x 49 (1.9). Being ultra-compact with impressive power, SP 4.500 is the ideal choice for Motorcycle applications and for under-seat in sports cars and behind-seat installations in trucks.

Features:

1. Up to 87% efficiency thanks to ADC (Advanced D-Class) output stage.
2. USS (Universal Speakers Simulators) allows SP 4.500 to work with head units featuring the speaker load detection circuit.
3. 90 W RMS x 4 (4) with ultra-compact size: 192.7 x 130 x 49 / 7.59 x 5.12 x 1.93 (mm/inch)
4. IP55 aluminum chassis for maximum protection against humidity and external agents.
5. No cooling fan to prevent internal accumulation of dirt.
6. Sealed power cord, line inputs and speaker outputs to prevent oxidation.
7. Crossover filters and controls on a single side to facilitate calibration when the product is installed.
8. Balanced fully-differential high-noise rejection inputs.
9. ART (Automatic Remote Turn-On/Off) automatically turns on/off the amplifier when the OEM head-unit turns on/off (can be enabled/disabled).

Specs

General Specs
Channels 4 – 3 – 2
Nominal power supply voltage 11 15 VDC
Pulse Operating voltage 6 16 VDC
Idling current 0.9 A
Idling current when off 0.03 mA
Consumption @ 14.4 VDC, MIN load impedance (Max Musical Power) 27 A
Remote IN 6 15 VDC (9 mA)
DC-REM – Remote Turn on by SPK DC from OUTPUT BTL speakers 3.5 7 VDC
Distortion – THD @ 1 kHz, 4, 70% Rated Power <0.02%
Damping factor @ 1 kHz, 4, 2 VRMS >150
Bandwidth @ -3 dB 10 Hz 35 kHz
S/N ratio (A weighted @ 1 V Input) 100 dBA
Pre-In sensitivity 0.6 6 VRMS
Speaker-In sensitivity 2.2 22 VRMS
Minimum load impedance:
@ 4Ch 2
@ 3Ch 2 + 2 + 4
@ 2Ch 4
IP Rating IP55
Operating Temperature Range 0C (32F) to 55C (131F)
Max size (mm/inch) 192.7 x 130 x 49 / 7.58 x 4.18 x 1.9
Weight (kg/lbs) 2.15 / 4.74
Adjustable Crossovers yes

Output Power
Output Nominal Power (RMS) @ 14.4 VDC, THD 1%:
4 Ch: 90 W x 4 (4)
4 Ch: 150 W x 4 (2)
3 Ch: 80 W x 2 (4) + 330 W x 1 (4)
3 Ch: 145 W x 2 (2) + 300 W x 1 (4)
2 Ch: 300 W x 2 (4)
Total Power 600 W

INPUTS / FILTERS
INPUTS: Pre IN / Speaker IN
Ch 1-2
Full Yes
Hi-pass 50 5k Hz @ 12 dB/Oct.
Lo-pass: 50 5k Hz @ 12 dB/Oct.
Ch 3-4
Full Yes
Hi-pass 50 5k Hz @ 12 dB/Oct.
Lo-pass 50 5k Hz @ 12 dB/Oct.
Bass Boost 45Hz (adjustable) OUT 3 – 4 (0 8) dB [LP = ON only]