Hertz SP 4.900 - Ch: 4 - 3 - 2 | 1000 W The Hertz SP 4.900, is a versatile and compact 4-channel amplifier designed for various vehicles. This powerhouse packs a punch with 1000W of peak power, while its Advanced D-Class technology ensures high efficiency and minimal heat generation. Whether you're powering your motorcycle, sports car, or truck, the SP 4.900 delivers exceptional sound quality in a space-saving package. Description SP 4.900 is the first Hertz amplifier featuring the renewed Hertz ADC (Advanced D-Class) output stage, reaching up to 85% efficiency and delivering an impressive power rating of 160 x 4 (4Ω) W RMS or 500 W x 2 (4Ω) W RMS when bridged, with an ultra-compact size of 211.6 (8.3) x 130 (5.1) mm (in.). Being ultra-compact with impressive power, SP 4.900 is the ideal choice for Motorcycle application and for under-seat in sports cars and behind-seat installations in trucks. General Specs Channels 4 - 3 - 2 Nominal power supply voltage 11 ÷ 15 VDC Pulse Operating voltage 6 ÷ 16 VDC Idling current 1.1 A Idling current when off 0.03 mA Consumption @ 14.4 VDC, MIN load impedance (Max Musical Power) 50 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 200 Bandwidth @ -3 dB 10 Hz ÷35 kHz S/N ratio (A weighted @ 1 V Input) 105 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) 211.6 x 130 x 49 / 8.33 x 5.118 x 1.929 Weight (kg/lbs) 2.15 / 4.74 Adjustable Crossovers yes