Samsung HT-AS600 and HT-P50 HTIB Review - How We Test the HTiB

Article Index
Samsung HT-AS600 and HT-P50 HTIB Review
HT-AS600 - First Look
HT-P50 - First Look
How We Test the HTiB
Amplifier Tests
Acoustic Speaker Tests
Subjective Listening Tests
Overall Conclusions

Testing Methodology

Audio tests are very difficult to perform because the human ear is ill equipped to make a definitive comparison between sounds. Also one person's ear can differ greatly from another's due to listening habits, ear physiology and tastes. Here at BCC we want to produce as objective a review as possible, so to that end we will use several different testing methods for these systems.

1. Microphone Tests. For this section I will be using some professional testing equipment to figure out exactly what frequency ranges these speakers are capable of. How low does the bass go? Does it have adequate high end extension? Do the speakers and the sub overlap well? These are questions that can only be answered with special equipment. I am using the Behringer ECM8000 reference microphone in conjunction with a small UB802 mixing board.

This equipment is fed into my computer using a Sound Blaster Audigy 2 and analyzed using RightMark's Audio Analyzer. I have done my best to make an acoustic testing chamber, however as the graphs show there are still some reflections. This test still gives a good indication of satellite and sub frequency response.

2. Electrical tests. The amplifier that goes with these systems plays an equally big role in overall sound quality so it deserves testing as well. I will be outputting several different waveforms at several wattages and analyzing the results with a Fluke ScopeMeter 97 which is basically a very nice digital oscilloscope. We can see from the resulting waveform what kind of distortion the amplifier typically produces.

3. Listening Test. Subjective though they may be, listening tests are still very important. For these tests I had several friends over who are very audio conscious, meaning that they know good sound. We ran through several movie scenes which they were asked to rate on several different categories such as clarity, bass, imaging, etc...