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1:00 PM - 10/23/2002 by
Philippe Ramelet
Here are the results given by Right Mark Audio Analyser for front stereo output quality with Fortissimo III 7.1 using the following test line: Fortissimo III 7.1 Stereo 1 out - DMX 6Fire 24/96 Line In.
| Right Mark Audio Analyser Results | ||
|---|---|---|
| Bandwidth (40 Hz to 15 kHz), dB: | +0.02, -0.13 | Very good |
| Signal to noise ratio, dB (A): | -81.2 | Good |
| Dynamic range, dB (A): | 78.4 | Average |
| Total harmonic distortion, %: | 0.0084 | Very good |
| Intermodular distortion, %: | 0.039 | Good |
| Stereo crosstalk, dB: | -80.8 | Very good |
Like Digifire 7.1, Fortissimo III 7.1 gives good quality output which bodes well for playback. Bandwidth compliance is more than adequate and the signal-to-noise quite good enough for a card in this range. There are a few differences compared to the Digifire 7.1, notably with regard to the THD which is lower (so better) on the Fortissimo III 7.1.
| Bandwidth | Response |
|---|---|
| From 20 Hz to 20 kHz, dB | -0.51, +0.02 |
| From 40 Hz to 15 kHz, dB | -0.13, +0.02 |
| Parameter | Left | Right |
|---|---|---|
| RMS power, dB: | -79.7 | -79.5 |
| RMS power (A-weighted), dB: | -81.2 | -81.0 |
| Peak level, dB FS: | -68.5 | -68.3 |
| DC offset, %: | -0.00 | -0.00 |
| Parameter | Left | Right |
|---|---|---|
| Dynamic range, dB: | +76.9 | +76.6 |
| Dynamic range (A-weighted), dB: | +78.7 | +78.4 |
| DC offset, %: | -0.00 | -0.00 |
| Parameter | Left | Right |
|---|---|---|
| THD, %: | 0.008 | 0.008 |
| THD + Noise, %: | 0.020 | 0.021 |
| THD + Noise (A-weighted), %: | 0.018 | 0.018 |
| Parameter | Left | Right |
|---|---|---|
| IMD + Noise, %: | 0.039 | 0.041 |
| IMD + Noise (A-weighted), %: | 0.035 | 0.036 |
| Parameter | G <- D | G -> D |
|---|---|---|
| Crosstalk at 100 Hz, dB: | -76 | -76 |
| Crosstalk at 1 kHz, dB: | -78 | -80 |
| Crosstalk at 10 kHz, dB: | -75 | -76 |
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