XM502-1Class D Mono Power Amplifier RMS 300W (4Ω) RMS 500W (2Ω) Variable Low Pass Filter Bass Boost Conformal Coating Protective Terminal Cover Size (inch) (W) 8-3/8" x (H) 2-1/16" x (D) 5-7/8" Optional Wired Remote Ready Output Coil with Magnetic ShieldPrevents magnetic flux from radiating from the subwoofer's coil, resulting in reduced noise and enhanced sound quality.High Quality CapacitorsPMLCAP's (Polymer Multi-Layer Capacitors) are utilized in the LC filter circuits to decrease distortion, ensuring clear detail for a truer to life sound.Infrasonic Filter (ISF)When the Infrasonic Filter Switch is turned on, the amplifier cuts off the low frequencies below 25Hz, which makes the amplifier’s power supply and output devices more efficient, providing clear bass output.Conformal CoatingImproved moisture resistance of the circuit boards to prevent corrosion.Protective Caps and CoverAll control holes,RCA, wired remote and Speaker Level input terminals are coverd with caps and plastic covers to avoid from moisture and dust.Sliding Terminal CoverDetachable sliding terminal cover offers a sleek design and easier installation.One-side ConnectionAll terminals and connections are on one side for easier installation and a cleaner look.Variable Gain CircuitImproved Signal to Noise RatioSpeaker Level Input HarnessSpeaker Level Input Harness is included to connect to speaker wires from factory installed receivers.General Features XM802-5 XM502-1 XM302-4 MAX POWER 1600W 1000W 600W RMS POWER OUTPUT (4Ω) 50W x 4 + 300W 300W 50W x 4 RMS POWER OUTPUT (2Ω) 75W x 4 + 500W 500W 75W x 4 RMS POWER OUTPUT Bridged 150W x 2 (Bridged) + 300W - 150W x 2 (Bridged) Features Speaker Level Input Speaker Level Input Speaker Level Input Signal Sensing Turn-On Signal Sensing Turn-On Signal Sensing Turn-On Variable High Pass Filter Variable Low Pass Filter Variable High Pass Filter Variable Low Pass Filter Infrasonic Filter Variable Low Pass Filter Conformal Coating Conformal Coating Conformal Coating Bass Boost Bass Boost Bass Boost Optional Wired Remote Ready Optional Wired Remote Ready Dimensions (W)9-3/4" x (H) 2-1/16” x (D)6-5/8” (W)8-3/8” x (H)2-1/16” x (D)5-7/8” (W)8-3/8” x (H)2-1/16” x (D)5-7/8” Weight 4.6 lbs ( 2.1 kg) 3.3 lbs ( 1.5 kg) 3.1 lbs ( 1.4 kg)