The versatile PX series power amplifiers lineup combines intelligent processing with high output power to meet the requirements of a vast range of sound reinforcement environments. 300W x 2 at 8 ohms / 500W x 2 at 4 ohms.
- 2x 300W at 8 ohms
- 2x 500W at 4 ohms
- Newly developed Class-D amplifier engine with a custom LSI
- Flexible onboard PEQ, crossover, filters, delay, and limiter functions
- Yamaha Speaker presets
- Utlities for safe and secure operation
- Output power; 1kHz Non-clip 20msec Burst Both channels driven 8 ohms 300W x 2
- 4 ohms 500W x 2
- 2 ohms 300W x 2
- 8 ohms/Power Boost Mode 600W x 1
- 4 ohms/Power Boost Mode 1000W x 1
- Sampling frequency rate Internal 48kHz
- 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, 8 ohms, 20Hz to 20kHz)
- S/N ratio 100dB (A-weighted, 8 ohms, Gain setting = +14dBu)
- Crosstalk Less than -60dB (Half Power, 8 ohms, 1kHz, Vol max input 150 ohms shunt)
- Voltage Gain/Sensitivity
- 8 ohms 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)
- 8 ohms 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)
- 8 ohms Volume max
- Maximum input voltage +24dBu
- Input impedance 20k ohms (Balance), 10k ohms (Unbalance)
- I/O Connectors
- Speaker output ports Neutrik speakON NL4 x2, Binding post x2 pairs, 1/4" PHONE(TS) x2
- Line Input XLR-3-31 x2, 1/4 "PHONE(TRS) x2
- 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 x1 (Green), ALERT x1 (Red), USB x1 (Green), PROTECT x2 (Red), CLIP/LIMIT x2 (Red), SIGNAL x2 (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
- Amplifier class Class D, Balanced output circuit (BTL)
- 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, 4 ohms, Pink noise at all channels), 55W (4 ohms, Idling)
- Dimensions W 480mm (18-7/8") xH 88mm (3-7/16"): 2U xD 388mm (15-2/8")
- 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 x1 with AC cord clamp
