YAMAHA PX3, 2x500W 4ohm. Class-D Power Amp. PEQ, crossover, filters, delay, and limiter functions

PX3 Power Amplifiers

• High power and efficient design: 500W (Stereo, into 4Ω)
• Driven by a newly developed Class-D amplifier engine.
• Stable 2-ohm drive capability.
• Supremely efficient amplifiers with low noise, reliable protection features.
• Amp Mode allows the user to configure the system without difficulty by selecting the input routing and output routing.
• Sophisticated signal processing allowing users to achieve consistent clarity and high-quality sound for either front-of-house or monitor configurations.
• Eight programmable presets for instant recall and reduced setup time that can be saved to a USB thumb drive and shared with other PX amplifiers.
• Presets specifically tuned for each model in Yamaha’s extensive lineup of passive speakers.
• A variety of input and output terminals.
• Panel locking function to keep your settings safe.

• Amplifier Class Class D, Balanced output circuit (BTL)
• Output Power (1kHz Non-clip 20msec Burst Both Channels Driven)
• 100V model
• 8Ω 300W x 2
• 4Ω 500W x 2
• 2Ω 300W x 2
• 120V model
• 8Ω 300W x 2
• 4Ω 500W x 2
• 2Ω 300W x 2
• 220V-240V model
• 8Ω 300W x 2
• 4Ω 500W x 2
• 2Ω 300W x 2
• 8Ω/Power Boost Mode 600W x 1 600W x 1 600W x 1
• 4Ω/Power Boost Mode 1000W x 1 1000W x 1 1000W x 1
• Sampling Frequency Rate Internal 48kHz
• A/D D/A Converters AD/DA: 24-bit linear, 128 times over sampling
• Total Harmonic Distortion 0.1% (1kHz, 10W), 0.3% (1kHz, Half power)
• Frequency Response ±1.0dB (1W, 8Ω, 20Hz to 20kHz)
• S/N Ratio 100dB (A-weighted, 8Ω, Gain setting = +14dBu)
• Crosstalk Less than -60dB (Half Power, 8Ω, 1kHz, Vol max input 150Ω shunt)
• Voltage Gain/Sensitivity
• 8Ω Volume Max 32.0dB/+4.1dBu (Gain setting: 32dB), 26.0dB/+10.1dBu (Gain setting: 26dB), 32.1dB/+4dBu (Gain setting: +4dBu),22.1dB/+14dBu (Gain setting: +14dBu)
• 8Ω Volume Max/Power Boost Mode 35.0dB/+4.1dBu (Gain setting: 32dB), 29.0dB/+10.1dBu (Gain setting: 26dB), 35.1dB/+4dBu (Gain setting: +4dBu), 25.1dB/+14dBu (Gain setting: +14dBu)
• Maximum Input Voltage +24dBu
• Input Impedance 20kΩ (Balance), 10kΩ (Unbalance)
• I/O Connectors Line Input XLR-3-31 x 2, 1/4" PHONE (TRS) x 2
• Speaker Output Neutrik speakON NL4 x 2, Binding post x 2 pairs, 1/4" PHONE (TS) x 2
• Others USB 2.0 Standard-A Connector (Female) for Save/Load, Speaker preset update, Firmware update with USB memory;
• AC inlet x1 with AC cord clamp
• Indicators POWER x 1 (Green), ALERT x 1 (Red), USB x 1 (Green), PROTECT x 2 (Red), CLIP/LIMIT x 2 (Red), SIGNAL x 2 (Green);
• Auto LED off feature
• Processors Input summing; D-CONTOUR (FOH/MAIN, MONITOR, OFF); Delay (0 - 74msec);
• HPF/LPF (cutoff frequency 20Hz~20kHz with polarity control); Speaker Processor (6 band PEQ* + Limiter + Delay)
• Latency 1.5 msec (Analog Input to Speakers)
• Presets 8 user amplifier presets (Factory preset: Speaker presets for Yamaha passive speakers)
• Protection Circuit Load Protection POWER switch on/off: Output mute; Output voltage protection: Over voltage limiter, user configurable by wattage and
• speaker preset; DC-fault: Power Supply shutdown (NOT restored automatically)
• Amplifier Protection Thermal: Output limiter (Restored automatically) → Output mute (Restored automatically);
• Over current: Output mute (Restored automatically); Over voltage: Output limiter (Restored automatically);
• Integrated Power Limit: Output limiter (Restored automatically)
• Power Supply Protection Thermal: Output limiter (Restored automatically) → Power supply shutdown; Over voltage: Power supply shutdown;
• Over current: Power supply shutdown
• Cooling 16 step variable speed fan x 2, front to rear airflow
• Power Requirements Depending on area of purchase; 100V 50Hz/60Hz, 120V 60Hz, 220V-240V 50Hz/60Hz
• *Verified as operating at rated power voltage +/- 10% voltage.
• Power Consumption 160W (1/8 MAX power, 4Ω, Pink noise at all channels), 55W (4Ω, Idling)
• Dimensions (W x H x D) 480mm x 88mm x 388mm (18-7/8" x 3-7/16" x 15-2/8") (2U)
• Net Weight 6.9 kg (15.21 lbs)
• Accessories USB cover, Owner’s Manual, Specification sheet, AC cable (2.0m) x 1
• Others USB 2.0 Standard-A Connector (Female) for Save/Load, Speaker preset update, Firmware update with USB memory;
• AC inlet x 1 with AC cord clamp