Panasonic CYPA4003U 1000W 4 Panasonic CYPA4003U 1000W 4 Channel Power Amplifier Panasonic CYPA4003U 1000W 4 Channel Power Amplifier High efficiency Low Pass Filter for Subwoofer Line Out Jacks for Expansion Intelligent Bass Servo Circuit Versatile Bridgeable Amp P High efficiency Low Pass Filter for Subwoofer Line Out Jacks for Expansion Intelligent Bass Servo Circuit Versatile Bridgeable Amp P UL LI B Make a Powerful Sound Statement B BR High efficiency is a key requirement for amplifiers particularly when it comes to driving powerful speakers over long periods using the cars battery power To attain high efficiency the power supply drive stage employs MOS FET devices having low internal impedance This helps preserve the transparency and crispness of the original audio signal for faithful audio reproduction through the connected speakers Maximum output power is an impressive 1000W 250W x 4 thanks to high efficiency with low heat generation and reduced load on the car battery LI B Low Pass Filter for Subwoofer B BR Amps with a built in low pass filter simplify upgrading to a subwoofer system You can adjust the cutoff frequency continuously from 50Hz to 250Hz for optimum matching between the subwoofers range and that covered by your other speakers LI B Line Out Jacks for Expansion B BR When configuring a sophisticated car audio system line out jacks make all of the difference They let you easily connect multiple amps while keeping the wiring neat for an attractive appearance LI B quot Intelligent quot Bass Servo Circuit BR B In comparison with the midrange and tweeter units the woofer has a relatively higher moving mass heavier voice coil and larger inductance so it needs more current to start moving This causes the bass to lag behind the mid and high frequencies resulting in unnatural tonal coloration Furthermore because of its longer throw the woofers voice coil has a greater tendency to deviate from pistonic motion resulting in non linear dynamic distortion To overcome these woofer shortcomings our quot intelligent quot bass servo drive circuit can feed very high current at the moment of start up and instantaneously detect and correct the state of voice coil movement to maintain pistonic motion and avoid non linearity The result is bass that is more coherent with the rest of the frequency spectrum achieving greater fidelity to the original sound LI B Versatile Bridgeable Amp BR B With a 4 channel amp like this CY PA4003U you can bridge it for 3 channel or 2 channel output Drive four speakers two speakers or two speakers and a subwoofer the choice is yours This amp has the flexibility to fit your car audio system LI B Specifications B UL LI Power Output maximum 225W x 4 nbsp nbsp LI Power Output nbsp 64 Watts x 4 nbsp nbsp LI Signal to Noise Ratio nbsp nbsp 85dBA nbsp nbsp LI THD 1kHz nbsp 0 02 nbsp nbsp LI Frequency Response nbsp 10Hz 30kHz nbsp nbsp LI Crossover Frequencies nbsp 50Hz 250Hz nbsp nbsp LI Bass Boost nbsp 0dB 15dB nbsp nbsp LI Input Level Adjustment nbsp 200mV 6V nbsp nbsp LI Speaker Impedance nbsp 4 ohms LI Line Out Jacks LI Gold plated RCA Connectors LI Gold Plated Speaker Terminal LI Speaker Level Input LI Mix Mode Operation LI Bridgeable 4 3 or 2 channel nbsp LI Servo Drive CircuiYes for PWM DC DC converter nbsp nbsp LI Thermal shutdown protection circuit LI Indication LED LI Blue Illumination LI UL LI UL B BR B nbsp