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. 500W x 2 at 8Ω / 800W x 2 at 4Ω.

 

  • 2x 300W at 8Ω
  • 2x 500W at 4Ω
  • 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

100V models

Output power; 1kHz Non-clip 20msec Burst
Both channels driven
300W x 2
500W x 2
300W x 2
8Ω/Power Boost Mode 600W x 1
4Ω/Power Boost Mode 1000W x 1

120V models

Output power; 1kHz
Non-clip 20msec Burst Both channels driven
300W x 2
500W x 2
300W x 2
8Ω/Power Boost Mode 600W x 1
4Ω/Power Boost Mode 1000W x 1

220V-240V models

Output power; 1kHz
Non-clip 20msec Burst Both channels driven
300W x 2
500W x 2
300W x 2
8Ω/Power Boost Mode 600W x 1
4Ω/Power Boost Mode 1000W x 1

General specifications

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 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, 4Ω, Pink noise at all channels), 55W (4Ω,
Idling)
Dimensions W 480mm (18-7/8")
H 88mm (3-7/16"): 2U
D 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 Operating Temperature: 0°C to +40°C, Storage temperature: -20°C
to +60°C