We use a tone generator to see the original signature of the speaker. We measure this via a frequency response meter. There are tone generators for Window, Android, macOS and iOS.
Here is a YouTube tester
BUT, in deference to all reviewers who may have better ears than I, here are the tracks I always use
The Blue Brothers Peter Gunn Theme
Those magnificent trumpets over a deep, bass, backbeat – Just the facts ma’am! I could listen to Blues Brother Jazz all day long.
Next track is the Beach Boys Fun, Fun, Fun
It is a vocal track with electric guitars and synthesiser behind it.
Finally, Manhattan Transfer Twilight Zone
It mixes voice and heavy bass as well as using the complete directional sound stage. Here is a 432kHz version (almost high res).
GadgetGuy’s take – a sound signature is the best guide to what speakers sound like
If you describe food, you could say salty, sweet, bitter, sour, soft, hard, mushy, like chicken etc.
Avoid any reviews that simply talk about their favourite tracks. I hope you can see that its all a science!
Sound is a very important category at GadgetGuy so we hope this helps you understand how you can rely on our reviews.