Soundstream AR4-2000D 2000W 4 Channel Class A/B Arachnid Series Car Amplifier

Soundstream AR4-2000D 4 Channel Class A/B Arachnid Series Car Amplifier 2-channel & 4-channel models take every advantage afforded by Class A/B linear amplifier technology, a compromise of performance and high-fidelity characteristics. 4-ohm or 2-ohm speakers Active 12dB/Octave Crossovers & Bass Boost Active crossovers built into an amplifier are the most efficient type of crossovers to use in car audio systems.  Passive crossover circuits (like those that come with speakers) can have a power loss of 0.5dB or more.  Active crossovers have much lower power loss, if any at all.  Simultaneously, active crossovers protect speakers from damage by harmful frequencies, and preserve optimum performance. Low Level RCA Input & Pre-Amp Output Connect the low level (pre-amp) audio output of the car stereo to the amplifier, using good quality twisted pair RCA interconnect cables.  Twisted pair RCA cables are optimal for their noise rejection properties.  The amplifiers pre-amp output daisy-chains the audio signal to multiple amplifiers of complex audio systems. Military Grade FR-4 PCB w/ MOSFET Power Supply FR-4 circuit board using a woven fiberglass cloth impregnated with an epoxy resin (to provide heat protection) Excellent electrical insulation properties and heat resistance even when exceeding 260OF.  MOSFET power supply is the stable & efficient conversion of a vehicles Alternating Current (AC) power for speakers and handles 2Ohm Loads Direct Short, Thermal, & Overload Protection Circuits Conventional amplifier circuitry includes a self-preservation mode, which temporarily shuts down the amplifier, protecting it from stress and risk of damage.  Protection triggers include speaker output direct short if Impedance is less than what is recommended  Read the Owner's Manual to avoid Damaging the Amp. 2-ohm & 4-Ohm Bridged Minimum Impedance Stability An amplifiers impedance stability is its ability to continuously power speaker(s) of no less than the given impedance per channel, without the risk of damage.  An “Ohm” is the measurement of resistance (impedance) of a speaker's voice coil, which indicates how much the amplifier will resist the flow of power to it.  Speakers are commonly available in a variety of voice coil configurations and impedances, so be sure the configuration of yours will be no less than 2-ohm. General information: 2000W 4 Channel Class A/B Arachnid Series Car Amplifier Hybrid Aluminum Alloy Heatsink for Optimum Dissipation MOSFET Power Supply w/ Audiophile Grade IRTM Transistors Military Grade SMT PCB Maintains Dynamic Performance Direct Short, Thermal, & Overload Circuits Protect Amplifier 200mV-6V Low Level/RCA Input w/ Bridged Operation Outputs Barrier Strip Wire Terminals, 4g Power & 8g Speaker Outputs Variable 12dB High Pass, Low Pass, & Subsonic Crossovers 12dB Bass Boost Increases Low Octave Harmonics Specs: SPECIFICATIONS AR4.2000D Max Power 2,000 Watts RMS Power @ 4Ω 90W x 4 RMS Power @ 2Ω 150W x 4 RMS Power @ 4Ω Bridged 300W x 2 Variable High Pass Crossover 120Hz-3Hz 12dB (ch. 1-4) Variable Low Pass Crossover 50-250Hz 12dB (ch. 3-4) Selectable Bass Boost 6dB or 12 dB 50Hz Total Harmonic Distortion <0.3% Signal-to-Noise Ratio 105dB Input Sensitivity 200mV-6V Dimensions 8.75″ (W) x 2.25″ (H) x 12.25" (L) High Power Under Seat Sized