Measurement of characteristics. Tone control LF/MF/HF/ Volume Premium testing
| Testing device | Tone control LF/MF/HF/Volume Premium |
| Sampling mode | 24-bit, 48 kHz |
| Interface | E-MU1616m |
| Testing chain | E-MU1616m>Tone control LF/MF/HF/Volume Premium>E-MU1616m |
| Supply voltage AC | 18V...0...18V |
| Operational amplifier | 2xLME49860 |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | -0.5 dB / -0.5 dB |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
Summary
| Frequency response (from 40 Hz to 15 kHz), dB | +0.12, -0.12 |
Very good |
| Noise level, dB (A) | -101.0 |
Excellent |
| Dynamic range, dB (A) | 100.9 |
Excellent |
| THD, % | 0.00133 |
Excellent |
| THD + Noise, dB (A)) | -91.9 |
Very good |
| IMD + Noise, % | 0.00330 |
Excellent |
| Stereo crosstalk, dB | -82.0 |
Very good |
| IMD at 10 kHz, % | 0.00574 |
Excellent |
| General performance | Very good |
Frequency response
Left |
Right |
|
| From 20 Hz to 20 kHz, dB | -0.35, +0.12 |
-0.24, +0.24 |
| From 40 Hz to 15 kHz, dB | -0.12, +0.12 |
+0.00, +0.24 |
Frequency response, tone control
Left |
Right |
|
| Treble From 20 Hz to 20 kHz, dB | -26.17, +16.70 |
-26.17, +16.70 |
| Treble From 40 Hz to 15 kHz, dB | -20.05, +14.92 |
-20.05, +14.92 |
| Middle From 20 Hz to 20 kHz, dB | -16.29, +13.17 |
-16.29, +13.17 |
| Middle From 40 Hz to 15 kHz, dB | -20.05, +14.92 |
-20.05, +14.92 |
| Bass From 20 Hz to 20 kHz, dB | -16.29, +13.17 |
-16.29, +13.17 |
| Bass From 40 Hz to 15 kHz, dB | -14.22, +12.56 |
-14.22, +12.56 |
Noise level
Left |
Right |
|
| RMS power, dB | -99.6 |
-100.1 |
| RMS power (A-weighted), dB | -100.7 |
-101.2 |
| Peak level, dB FS | -72.8 |
-73.4 |
| DC offset, % | +0.0 |
+0.0 |
Dynamic range
Left |
Right |
|
| Dynamic range, dB | +99.5 |
+100.0 |
| Dynamic range (A-weighted), dB | +100.7 |
+101.1 |
| DC offset, % | +0.00 |
-0.00 |
THD + Noise (at -3 dB FS)
Left |
Right |
|
| THD, % | 0.00139 |
0.00127 |
| THD + Noise, % | 0.00249 |
0.00247 |
| THD + Noise (A-weighted), % | 0.00257 |
0.00254 |
Intermodulation distortion
Left |
Right |
|
| IMD + Noise, % | 0.00336 |
0.00325 |
| IMD + Noise (A-weighted), % | 0.00300 |
0.00287 |
Stereo crosstalk
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -96 |
-104 |
| Crosstalk at 1000 Hz, dB | -78 |
-84 |
| Crosstalk at 10000 Hz, dB | -59 |
-66 |
IMD (swept tones)
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.00559 |
0.00505 |
| IMD + Noise at 10000 Hz, | 0.00481 |
0.00451 |
| IMD + Noise at 15000 Hz, | 0.00741 |
0.00710 |
Conclusions
| One of the most successful solutions for correcting the frequency balance and adjusting the output audio signal to
specific acoustics or to taste. The measurement of the frequency response in the entire spectrum was carried out by long adjustments of the treble/midrange/bass.
The measurement of the frequency response was carried out by setting the regulator of the measured frequency to the maximum, the rest to the minimum,
after which the results were summarized in one graph. Subjectively, the tone block sounds pleasant with any op amp and is able to adjust the frequency response to any taste.
Summary: Ultra-low distortion, pleasant sound, steady demand and positive reviews for this tone block say that this is one of the most successful solutions in audio frequency correction for both budget systems and rather expensive solutions. Buy this module «Premium» option or «Ordinary» can we in kit-amp.com store |
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