Yamaha P2500S Two-Channel Power Amplifier, 250W into 8 Ohm Stereo
Yamaha P2500S Two-Channel Power Amplifier
SKU: YMP2500S MFR: P2500S
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The Yamaha P2500S Two-Channel Power Amplifier is a rack-mountable stereo power amplifier for sound reinforcement applications offering 250 watts per channel at 8 ohms and a moderate weight for its size. The P2500S has been optimized for use with Yamaha's Club Series speakers and is equipped with a YS engagement switch, which activates proprietary circuitry that matches the output of the amplifier to the capability of the speakers; that being said, speakers from all other manufacturers are supported as well and the YS circuitry is defeatable.
Another exclusive feature of the P2500S is the EEEngine energy conservation design, which obtains the same full output that conventional amplifier designs offer, but with half the power consumption. This attribute, in conjunction with a full complement of thermal and limiting overload protection, allows for cooler, quieter operation and improved frequency response with minimized distortion. The P2500S has XLR and 1/4" balanced inputs and Neutrik Speakon, binding post and 1/4" speaker outputs for connection to almost any sound system.
The rear panel offers several filtering options, the YS activation switch and a mode switch - the amplifier supports stereo, bridged and parallel operation. There is a comprehensive group of bright, color-coded LED activity indicators and the front panel channel attenuator knobs are thoughtfully recessed and protectively covered.
- Rack-mountable stereo power amplifier with 250 watts per channel at 8 ohms
- EEEngine (Energy Efficient Engine) technology for high power output with half the energy consumption of conventional amplifier designs
- Proprietary YS processing with dedicated on/off switch optimizes amplifier output for use with Yamaha Club Series speakers
- Amplifier overload limiting protection circuitry includes power on/off muting, DC detection, thermal protection and current limiting
- Variable speed fan cooling
- Sweepable rear panel low end frequency control knobs, low cut/subwoofer filter switches
- Rear panel stereo/bridge/parallel operation mode switch
- Recessed front panel attenuator controls with protective cover
- Front panel LED indicators for power, protection, temperature, YS processing, signal and clip
- Vented front and rear panels
| Output Power |
Rating at 1kHz, THD=1%
275W at 8 Ohms Stereo (per channel)
390W at 4 Ohms Stereo (per channel)
780W at 8 Ohms Bridged-Mono
Rating at 20Hz - 20kHz, THD=0.1%
250W at 8 Ohms Stereo (per channel)
310W at 4 Ohms Stereo (per channel)
620W at 8 Ohms Bridged-Mono
Rating at 1kHz, 20ms Nonclip
650W at 2Ohms Stereo (per channel)
1300W at 4 Ohms Bridged-Mono |
| Damping Factor |
Greater than 200 (8 ohms, 1kHz) |
| Input Sensitivity |
+3dB (8 ohms, Max Attenuation) |
| Input Impedance |
30 k ohms (Balanced)
15 k ohms (Unbalanced) |
| Gain |
32.1dB |
| Frequency Response |
20Hz - 50kHz (0dB, +0.5dB, -1dB at 1 Watt, 8 ohms) |
| Signal-to-Noise Ratio |
100dB |
| Total Harmonic Distortion (THD) |
Less than 0.1%, 20Hz - 20kHz, Half Power |
| Input Connections |
2 x 3-pin XLR Female (Balanced)
2 x 1/4" (6.3mm) TRS Phone (Balanced) |
| Output Connectors |
2 x Speakon
2 x 5-way Binding Post
2 x 1/4" (6.3mm) Phone |
| Controls Front Panel |
1 x Push On/Off Power Switch
2 x 31-Position Attenuator Knobs |
| Controls (Rear) |
1 x Stereo/Bridge/Parallel Mode Switch
2 x Subwoofer/Low Cut/Off Filter Switches
2 x 25Hz - 150Hz Frequency Control Switches
1 x Yamaha Speaker Processing On/Off Switch |
| Indicators |
1 x Green Power On LED
1 x Red Protection LED
1 x Red Heatsink Temp Overheat LED
1 x Yellow YS Processor LED
2 x Green Signal LEDs
2 x Red Clip LEDs |
| Cooling |
Dual Variable-Speed Fans |
| Power Consumption |
Idle: 25W
1/8 (4 ohms): 320W
Maximum (4 ohms): 1600W |
| Power Requirements |
120V 60Hz |
| Dimensions (WxHxD) |
480x88x456mm / 18.89x3.46x17.95" |
| Weight |
30.9 lbs (14 kg) |
