TDA2050 (STM), amplifier testing. Characteristics Measurement
| Testing device | TDA2050 (STM) stereo |
| Sampling mode | 24-bit, 48 kHz |
| Interface | E-MU1616m |
| Testing chain | E-MU1616m>TDA2050 (STM) stereo>E-MU1616m |
| Supply voltage bipolar | -25V...0...+25V |
| Load resistance | 4 Ohm |
| Testing power | 9W |
| Maximum power | 34W |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | -0.5 dB / -0.5 dBБ |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
Summary
| Frequency response (from 40 Hz to 15 kHz), dB | +0.05, -0.02 |
Excellent |
| Noise level, dB (A) | -102.4 |
Excellent |
| Dynamic range, dB (A) | 102.4 |
Excellent |
| THD, % | 0.015 |
Good |
| THD + Noise, dB (A) | -73.9 |
Average |
| IMD + Noise, % | 0.014 |
Very good |
| Stereo crosstalk, dB | -74.7 |
Good |
| IMD at 10 kHz, % | 0.019 |
Very good |
| General performance | Very good |
Frequency response
Left |
Right |
|
| From 20 Hz to 20 kHz, dB | -0.13, +0.01 |
-0.11, +0.05 |
| From 40 Hz to 15 kHz, dB | -0.05, +0.01 |
-0.02, +0.05 |
Noise level
Left |
Right |
|
| RMS power, dB | -101.2 |
-101.4 |
| RMS power (A-weighted), dB | -102.3 |
-102.4 |
| Peak level, dB FS | -82.4 |
-83.2 |
| DC offset, % | -0.0 |
-0.0 |
Dynamic range
Left |
Right |
|
| Dynamic range, dB | +101.3 |
+101.4 |
| Dynamic range (A-weighted), dB | +102.3 |
+102.5 |
| DC offset, % | +0.00 |
-0.00 |
THD + Noise (at -3 dB FS)
Left |
Right |
|
| THD, % | 0.01728 |
0.01336 |
| THD + Noise, % | 0.01741 |
0.01354 |
| THD + Noise (A-weighted), % | 0.02258 |
0.01759 |
Intermodulation distortion
Left |
Right |
|
| IMD + Noise, % | 0.01341 |
0.01394 |
| IMD + Noise (A-weighted), % | 0.01229 |
0.01296 |
Stereo crosstalk
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -93 |
-85 |
| Crosstalk at 1000 Hz, dB | -82 |
-65 |
| Crosstalk at 10000 Hz, dB | -63 |
-44 |
IMD (swept tones)
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.02602 |
0.03249 |
| IMD + Noise at 10000 Hz, | 0.01403 |
0.01738 |
| IMD + Noise at 15000 Hz, | 0.01325 |
0.01374 |
Conclusions
| Despite the fact that the TDA2050 chip from STM has long been discontinued, it continues to be popular with
radio amateurs and just lovers of quality music. Of the competitors, the TDA2050 is the most powerful at the same time
the level of distortion and noise is very low.
Summary: the amplifier on the TDA2050 can be safely recommended as a high-quality power amplifier for bookshelf acoustics level, which can be purchased from our store kit-amp.com. To unleash the potential of this amplifier, the signal source and acoustics must be of a sufficiently high level and at least comply with the HI-FI standard |
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