4 Ohm 800W Channel Power Amp with Onboard PEQ, Crossover, Filters, Delay, Limiter Functions

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 8 ohms / 800W x 2 at 4 ohms.

Key Features

• 2x 500W at 8 ohms
• 2x 800W 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

Technical Specifications

100V models
Output power; 1kHz Non-clip 20msec Burst Both channels driven
8 ohms:
500W x 2
4 ohms:
800W x 2
2 ohms:
500W x 2
8 ohms/Power Boost Mode:
800W x 1
4 ohms/Power Boost Mode:
1200W x 1
120V models
Output power; 1kHz Non-clip 20msec Burst Both channels driven
8 ohms:
500W x 2
4 ohms:
800W x 2
2 ohms:
500W x 2
8 ohms/Power Boost Mode:
800W x 1
4 ohms/Power Boost Mode:
1400W x 1
220V-240V models
Output power; 1kHz Non-clip 20msec Burst Both channels driven
8 ohms:
500W x 2
4 ohms:
800W x 2
2 ohms:
500W x 2
8 ohms/Power Boost Mode:
800W x 1
4 ohms/Power Boost Mode:
1400W 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, 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/+6.3dBu (Gain setting: 32dB), 26.0dB/+12.3dBu (Gain setting: 26dB), 34.3dB/+4dBu (Gain setting: +4dBu), 24.3dB/+14dBu (Gain setting: +14dBu)
8 ohms 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)
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:
230W (1/8 MAX power, 4 ohms, Pink noise at all channels), 55W (4 ohms, Idling)
Dimensions W x H x D:
480mm (18-7/8") x 88mm (3-7/16"): 2U x 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 Degrees Celcius to +40 Degrees Celcius, Storage temperature: -20 Degrees Celcius to +60 Degrees Celcius