AOpen i945Ga-PHS Review 0

AOpen i945Ga-PHS Review

by
W1zzard
,
on ,
Manufacturer: AOpen
Fan Noise & Overclocking »

Rightmark Audio Analyzer



We used Rightmark Audio Analyzer together with a loop-back cable to analyze the quality of the on-board audio solution.

Summary

Frequency response (from 40 Hz to 15 kHz), dB:+0.25, -0.31Good
Noise level, dB (A):-84.0Good
Dynamic range, dB (A):83.9Good
THD, %:0.018Good
IMD, %:0.028Good
Stereo crosstalk, dB:-80.2Very good
IMD at 10 kHz, %:0.108Average

General performance: Good


For easier comparison we summed up the individual scores of all tested boards (1: Very poor, 2: Poor, 3: Average, 4: Good, 5: Very good, 6: Excellent).
The audio quality is good, definitely worth of a Media PC.

Frequency Response



Frequency rangeResponse
From 20 Hz to 20 kHz, dB-1.65, +0.25
From 40 Hz to 15 kHz, dB-0.31, +0.25

Noise Level



ParameterLeftRight
RMS power, dB:-82.6-80.6
RMS power (A-weighted), dB:-83.8-84.0
Peak level, dB FS:-69.5-68.0
DC offset, %:-0.00-0.00

Dynamic Range



ParameterLeftRight
Dynamic range, dB:+83.1+80.7
Dynamic range (A-weighted), dB:+83.9+84.0
DC offset, %:-0.00-0.00

THD + Noise (at -3 dB FS)



ParameterLeftRight
THD, %:0.01910.0181
THD + Noise, %:0.02440.0243
THD + Noise (A-weighted), %:0.02700.0258

Intermodulation distortion



ParameterLeftRight
IMD + Noise, %:0.03480.0275
IMD + Noise (A-weighted), %:0.02080.0201

Stereo crosstalk



ParameterL <- RL -> R
Crosstalk at 100 Hz, dB:-82-78
Crosstalk at 1 kHz, dB:-79-67
Crosstalk at 10 kHz, dB:-68-48

IMD (swept tones)



ParameterLeftRight
IMD + Noise at 5 kHz, %:0.04050.0402
IMD + Noise at 10 kHz, %:0.11250.1127
IMD + Noise at 15 kHz, %:0.16950.1709
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Jan 10th, 2025 18:55 EST change timezone

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