YAMAHA PX5 เครื่องขยายเสียง 2x 500 วัตต์ at 8Ω, 2x 800 วัตต์ at 4Ω

Features
Class-D amplifier engine with single custom LSI chip and PLL technology
Power Boost Mode combines the power output from two channels into one
Configuration Wizard allows for configuration of the system by assigning optimized speaker settings which can be saved as presets
Digital routing of inputs & output (dual, parallel, single & SUM)
DSP functions include PEQ, crossover, filters, delay & limiter, accessed via an LCD display
D-Contour multi-band dynamic processing shapes the frequency response of speakers for specific applications
Basic mode for quick setup and Advanced mode for more precise control
Flexible connectivity with XLR & 1/4″ TRS inputs and binding post, SpeakON & 1/4″ TS outputs
Presets can be saved to USB drive for use with other amplifiers and setups, Panel-locking function to keep settings safe
Two 16-step variable-speed fans, Lightweight chassis

Specs.

100V 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
4Ω/Power Boost Mode 1200W x 1
120V 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
4Ω/Power Boost Mode 1400W 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
4Ω/Power Boost Mode 1400W 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/+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)
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); Integrat