P-4500 Stereo Power Amplifier
The quest for the optimal power amplifier has just taken another giant leap forward. The P-4500 features an instrumentation amplifier configuration realized with discrete semiconductors in the signal path, triple Darlington 4-parallel complementary push-pull architecture and many other technology advantages. The result is an impressive S/N ratio of 121 dB, rated output of 500 watts into 1 ohm (music signals), and a damping factor of 700. A newly developed output protection circuit can also detect any short-circuiting of the speaker terminals, for complete peace of mind. This power amplifier is the ultimate tool for immersive music enjoyment on the highest level.
- Power amplification stage with 4-parallel complementary push-pull configuration
- Linear output characteristics (90 W / 8 ohms, 180 W / 4 ohms, 360 W / 2 ohms)
- 500 W output into ultra-low impedance load of 1 ohm (music signals)
- Instrumentation amplifier principle
- Current feedback topology
- Balanced Remote Sensing
- High damping factor of 700
- Speaker output protection with short-circuit detection
- Highly responsive large peak power meters
- Support for bi-amping and bridged mode
| Continuous Average Output power (20-20,000 Hz) |
Stereo Operation (both channels driven: 500 W/ch = 1-ohms load * 360 W/ch = 2-ohms load 180 W/ch = 4-ohms load 90 W/ch = 8-ohms load Monophonic Operation: 1000 watts = 2 ohms load* 720 watts = 4 ohms load 360 watts = 8 ohms load Notes: Ratings marked. with * are for music signals only |
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| Total Harmonic Distortion |
Stereo operation ( both channels driven ) 0.05% with a 2-ohm load 0.02% with a 4 to 16-ohm load Monophonic operation (bridged connection) 0.05% with a 4 to 16 ohm load |
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| Intermodulation Distortion | 0.01% | ||||||||||
| Frequency Response |
At rated continuous average output: 20 - 20 000 Hz + 0 - 0.2dB At 1 watt output: 0.5 - 160000Hz +0 - 3.0dB |
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| Gain |
28.0dB ( GAIN selector in MAX position) (Stereo/monophonic operation) |
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| Gain Selector |
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| Output Load Impedance |
Stereo Operation: 2 to 16 ohms Monophonic Operation: 4 to 16 ohms * With music signals only, 1-ohm loads are permissible for stereo operation and 2-ohm loads for monophonic operation. |
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| Damping factor | 700 | ||||||||||
| Input Sensitivity ( with 8-ohm load) |
Stereo Operation 1.07V for rated continuous average output 0.11V for 1 watt output Monophonic Operation 2.14V for rated continuous average output 0.11V for 1 watt output |
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| Input Impedance |
Balanced: 40 Kilohms Line (unbalanced): 20 Kilohms |
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Signal-to-Noise Ratio (A-weighted, with input shorted) |
121dB (GAIN selector in MAX position) 126dB (Gain selector in -12dB position) At rated continuous average output |
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| Output Level Meter |
Logarithmic scale, with indication off switch and -infinite to +3dB (indication in dB and %) Hold time switchable 3s / infinite *during monophonic operation, both meters show the same value |
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| Power Requirements | 120/220/230 V AC, 50/60 Hz (Voltage as indicated on rear panel) | ||||||||||
| Power Consumption |
62 watts idle 485 watts in accordance with IEC 60065 |
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| Maximum Dimensions |
Width: 465mm (18.31") Height: 190mm (7.48") Depth: 427mm (16.81") |
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| Mass |
29.2kg (64.4lbs) net 55.0kg (77.2lbs) in shipping carton |
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