About: Hertz SP 4.500 4 Channel 150W RMS x 4 Advanced Car Amplifier

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 (4Ω) W RMS or 300 W x 2 (4Ω) 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.

Specifications:

• 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, 4Ω, 70% Rated Power <0.02%
• Damping factor @ 1 kHz, 4Ω, 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 2Ω
• @ 3Ch 2Ω + 2Ω + 4Ω
• @ 2Ch 4Ω
• IP Rating IP55
• Operating Temperature Range 0°C (32°F) to 55°C (131°F)
• 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

Amplifier Stage

• Distortion - THD @ 100 Hz, 70% Rated Power 0.01%
• Damping factor @ 1 kHz, 1W 130
• Bandwidth @ -3 dB 10Hz ÷ 45kHz
• S/N ratio (A-weighted @ 1 V Input) 101 dBA
• Minimum load impedance @ 4 Ch : 2 Ω
• @ 3 Ch : 2 Ω + 2 Ω + 4 Ω
• @ 2 Ch : 4 Ω
• Adjustable Crossovers yes

Output Power

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

Physical Specifications

• 7.58" x 5.12" x 1.93"