1SERVICE MANUALUS ModelCanadian ModelE ModelXM-554ZRSTEREO POWER AMPLIFIERCircuit system OTL (output transformerless) circuitPulse power supplyInputs RCA pin jacksHigh level input connectorInput level adjustment range0.3 – 6 V (RCA pin jacks),2.8 – 12 V (High level input)Outputs Speaker terminalsSpeaker impedance 2 – 8 Ω (stereo)4 – 8 Ω (when used as a bridging amplifier)Maximum output 4 speakers: 110 W × 4 (at 4 Ω)3 speakers: 150 W × 2 (at 2 Ω) + 300 W × 1 (BTL, at 4 Ω)Rated output (supply voltage at 14.4 V)4 speakers:55 W × 4 (20 Hz – 20 kHz, 0.04% THD, at 4 Ω)65 W × 4 (20 Hz – 20 kHz, 0.1% THD, at 2 Ω)Frequency response 5 Hz – 50 kHz ( dB)Harmonic distortion 0.005% or less (at 1 kHz, 4 Ω)Low-pass filter 80 Hz, –18 dB/octHigh-pass filter 80 Hz, –12 dB/octPower requirements 12 V DC car battery (negative ground)Power supply voltage 10.5 – 16 VCurrent drain at rated output : 30 A (4 Ω, 55 W × 4)Remote input : 1 mADimensions Approx. 401 × 55 × 264 mm (w/h/d)not incl. projecting parts and controlsMass Approx. 3.2 kg not incl. accessoriesSupplied accessories Mounting screws (4)High level input cord (1)Protection cap (1)Design and specifications are subject to change withoutnotice.SPECIFICATIONS+0–3Ver. 1.2 2006. 089-887-093-032006H04-1© 2006. 08Sony CorporationeVehicle DivisionPublished by Sony Techno Create Corporation