PX8

The Yamaha PX8 power amplifier offers basic and advanced setup modes to meet a wide variety of sound reinforcement needs.

From the Manufacturer:

Since the 1976 release of the P2200, our first professional power amplifier, Yamaha has strived to achieve the highest possible levels of sound quality, power output, and reliability in sound reinforcement, studio, and installed applications. The new PX series power amplifiers continue this tradition of excellence, utilizing Yamaha’s renowned digital signal processing technology and unparalleled professional audio expertise to achieve a light, durable design, capable of delivering maximum output power to the speakers while simultaneously protecting them with optimized processing. Driven by a newly-developed Class-D amplifier the four new models that make up the PX series are suitable for a broad range of sound reinforcement and installation environments.

Features:

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. 800W x 2 at 8Ω / 1050W x 2 at 4Ω.

• 2x 800W at 8Ω
• 2x 1050W 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

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: 101dB (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/+8.3dBu (Gain setting: 32dB), 26.0dB/+14.3dBu (Gain setting: 26dB), 36.3dB/+4dBu (Gain setting: +4dBu), 26.3dB/+14dBu (Gain setting: +14dBu)
• Maximum input voltage: +24dB
• 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: 280W (1/8 MAX power, 4Ω, Pink noise at all channels), 60W (4Ω, Idling)
• Dimensions:
  • W: 480mm (18-7/8")
  • H: 88mm (3-7/16"): 2U
  • D: 388mm (15-2/8")
• Net weight: 7.2 kg (15.87 lbs)
• Accessories: USB cover, Owner's Manual, Specification sheet, AC cable (2.0m) x 1