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.

General specifications:

Sampling frequency rate Internal 48kHz

Total harmonic distortion 0.1% (1kHz, 10W), 0.3% (1kHz, Half power)

S/N ratio 100dB (A-weighted, 8Ω, Gain setting = +14dBu)

Crosstalk Less than -60dB (Half Power, 8Ω, 1kHz, Vol max input 150Ω shunt)

Maximum input voltage +24dBu

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)

I/O Connectors Speaker output ports Neutrik speakON NL4 x2, Binding post x2 pairs, 1/4" PHONE(TS) x2

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.

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

Frequency response ±1.0dB (1W, 8Ω, 20Hz to 20kHz)

Power consumption 230W (1/8 MAX power, 4Ω, Pink noise at all channels), 55W (4Ω, Idling)

Others Operating Temperature: 0°C to +40°C, Storage temperature: -20°C to +60°C

I/O Connectors 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

Line Input XLR-3-31 x2, 1/4 "PHONE(TRS) x2

A/D D/A Converters AD/DA: 24-bit linear, 128 times over sampling

Voltage Gain/Sensitivity 8Ω Volume max 32.0dB/+6.3dBu (Gain setting: 32dB), 26.0dB/+12.3dBu (Gain setting: 26dB), 34.3dB/+4dBu (Gain setting: +4dBu), 24.3dB/+14dBu (Gain setting: +14dBu)

8Ω Volume max /Power Boost mode 34.0dB/+6.3dBu (Gain setting: 32dB), 28.0dB/+12.3dBu (Gain setting: 26dB), 36.3dB/+4dBu (Gain setting: +4dBu), 26.3dB/+14dBu (Gain setting: +14dBu)

Indicators POWER x1 (Green), ALERT x1 (Red), USB x1 (Green), PROTECT x2 (Red), CLIP/LIMIT x2 (Red), SIGNAL x2 (Green); Auto LED off feature

Presets 8 user amplifier presets (Factory preset: Speaker presets for Yamaha passive speakers)

Input impedance 20kΩ (Balance), 10kΩ (Unbalance)

Latency 1.5 msec (Analog Input to Speakers)

100V models

Output power; 1kHz Non-clip 20msec Burst Both channels driven 4Ω/Power Boost Mode 1200W x 1

220V-240V models

Output power; 1kHz Non-clip 20msec Burst Both channels driven 8Ω 500W x 2

4Ω 800W x 2

2Ω 500W x 2

8Ω/Power Boost Mode 800W x 1

8Ω 500W x 2

4Ω 800W x 2

2Ω 500W x 2

8Ω/Power Boost Mode 800W x 1

4Ω/Power Boost Mode 1400W x 1

8Ω 500W x 2

4Ω 800W x 2

2Ω 500W x 2

8Ω/Power Boost Mode 800W x 1

4Ω/Power Boost Mode 1400W x 1