Testing the AUDIOPHILE, 100W amplifier. Measurements, specifications
| Testing device | Amplifier AUDIOPHILE 100W |
| Sampling mode | 24-bit, 48 kHz |
| Interface | E-MU1616m |
| Testing chain | E-MU1616m>Amplifier AUDIOPHILE 100W>E-MU1616m |
| Constant voltage DC | -43V...0...+43V |
| Load resistance | 4 Ohm |
| Testing power | 80W |
| Maximum power | 145W |
| Output transistors | 2SA1943/2SC5200 TOSHIBA |
| Quiescent current | 150mA |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | -0.1 dB / -0.1 dB |
| Mono mode | ON |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
Summary
| Frequency response (from 40 Hz to 15 kHz), dB | +0.02, -0.11 |
Excellent |
| Noise level, dB (A) | -106.1 |
Excellent |
| Dynamic range, dB (A) | 105.6 |
Excellent |
| THD, % | 0.00797 |
Very good |
| THD + Noise, dB (A) | -78.7 |
Good |
| IMD + Noise, % | 0.012 |
Very good |
| IMD at 10 kHz, % | 0.047 |
Good |
| General performance | Very good |
Frequency response
Left |
Right |
|
| From 20 Hz to 20 kHz, dB | -0.19, +0.02 |
-0.19, +0.02 |
| From 40 Hz to 15 kHz, dB | -0.11, +0.02 |
-0.11, +0.02 |
Noise level
Left |
Right |
|
| RMS power, dB | -100.6 |
-100.6 |
| RMS power (A-weighted), dB | -106.1 |
-106.1 |
| Peak level, dB FS | -73.1 |
-73.1 |
| DC offset, % | -0.0 |
-0.0 |
Dynamic range
Left |
Right |
|
| Dynamic range, dB | +100.5 |
+100.5 |
| Dynamic range (A-weighted), dB | +105.6 |
+105.6 |
| DC offset, % | +0.00 |
-0.00 |
THD + Noise (at -3 dB FS)
Left |
Right |
|
| THD, % | 0.00797 |
0.00797 |
| THD + Noise, % | 0.00957 |
0.00957 |
| THD + Noise (A-weighted), % | 0.01166 |
0.01166 |
Intermodulation distortion
Left |
Right |
|
| IMD + Noise, % | 0.01196 |
0.01196 |
| IMD + Noise (A-weighted), % | 0.00823 |
0.00823 |
IMD (swept tones)
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.02959 |
0.02959 |
| IMD + Noise at 10000 Hz, | 0.04436 |
0.04436 |
| IMD + Noise at 15000 Hz, | 0.06624 |
0.06624 |
Maximum power
Calculation formula |
Meaning |
|
| Maximum power, W | (Vrms x Vrms) / 4 Ohm |
145 |
Conclusions
| The scheme worked out to the smallest detail and the topology of the printed circuit board, naturally, gave excellent
results when testing the amplifier. This circuit solution, in terms of measurements and sound quality, surpasses most
popular audio amplifier circuits. The module is easy to set up and requires only setting the quiescent current on a warm
amplifier, depending on the supply voltage. The optimal quiescent current of the output stage is 60-120mA.
Summary: A transistor amplifier, designed specifically for connoisseurs of high-quality music listening, subjectively, surpasses all microcircuit amplifiers and sounds at the level of very expensive transistor "brothers". You can buy the module from our store kit-amp.com The module is recommended for assembling an amplifier and working in a path of a sufficiently high level, from the signal source to the acoustics. |
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