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YAMAHA PX8 เครื่องขยายเสียง เพาเวอร์แอมป์ 2 x 800 วัตต์ at 8Ω, 2x 1,050 วัตต์ at 4Ω, Class-D
The Yamaha PX8 Stereo Power Amplifier delivers 800W at 8 Ohms in a lightweight chassis and is suitable for a wide variety of sound-reinforcement applications. Part of the company’s PX Series of power amplifiers, it features a Class-D engine with a single custom LSI chip, and uses PLL technology for higher efficiency and lower noise.
The on-board DSP functions include a PEQ, a delay, a crossover, and a limiter. They allow for detailed configuration of parameters such as input & output routing, input sensitivity, amp gain, and speaker impedance. The D-Control multi-band dynamic processor delivers a clear and consistent sound at any output level by shaping the frequency response of each speaker for either front-of-house or monitor configurations.
The Configuration Wizard helps save time during setup by assigning optimized speaker settings that match your system configuration. It can be used in basic mode for quick setup or advanced mode for more precise control over DSP parameters. You can store up to eight presets, which can be saved to a USB drive for use with other amplifiers and setups.
For secure operation, the panel-locking function ensures that your settings remain safe. With its sturdy frame and carrying handle, the PX8 is built to withstand extended road use.
Features:
- Class-D amplifier engine with single custom LSI chip and PLL technology
- 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
Specifications เพาเวอร์แอมป์
| Output Power | 800 W per channel at 8 Ohms 1050 W per channel at 4 Ohms 600 W per channel at 2 Ohms |
| Amplifier Type | Class-D, balanced output circuit (BLT) |
| THD + N | 0.1% at 1 kHz, 10 W 0.3% at 1 kHz, half power |
| Frequency Response | 20 Hz to 20 kHz, ±1.0 dB (1 W at 8 Ohms) |
| Crosstalk | ≤ -60 dB |
| S/N Ratio | 101 dB |
| Voltage Gain / Sensitivity | At 8 Ohms, Maximum Volume:
32.0 dB / +8.3 dBu (Gain Setting: 32 dB) |
| Cooling | 2 x 16-step variable-speed fan (front-to-rear flow) |
| Maximum Input Voltage | +24 dBu |
| Input Impedance | 20 kOhms (Balanced) 10 kOhms (Unbalanced) |
| Sampling Frequency | 48 kHz |
| Converters | A/D: 24-bit linear, 128 times over-sampling D/A: 24-bit linear, 128 times over-sampling |
| Signal Processing |
|
| Latency | 1.5 ms (analog input to speaker) |
| User Presets | 8 user presets |
| Factory Presets | Speaker presets for Yamaha passive speakers |
| Connectors | Analog Input 2 x XLR-3-31 2 x 1/4 TRSSpeakers 2 x Neutrik SpeakOn NL4 2 x pairs of binding posts 2 x 1/4″ TS1 x AC inlet with AC cord clamp1 x USB 2.0 Type-A (female) |
| AC Power Requirements | 120 VAC / 60 Hz |
| Power Consumption | 280 W at 4 Ohms, 1/8 maximum power 60 W at 4 Ohms, Idle |
| Operating Temperature | 32 to 104°F / 0 to +40°C |
| Storage Temperature | -4 to 140°F / -20 to +60°C |
| Dimensions (W × H × D) | 18.90 x 3.46 x 15.25″ / 480 x 88 x 387.4 mm |
| Weight | 15.87 lb / 7.2 kg |
