Mark K's Speaker Pages
...when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely in your thoughts advanced to the state of Science...Lord Kelvin
PHL 1120
|
PHL 1120
For comparison's sake, graphs of the Seas M15 are also shown, and in selected graphs, the SS8545.
The following data are shown
Impedance-standard curves and enlarged views
Nearfield frequency response, done at 1"
Nearfield linear burst distortion at 600 hz, 1k, 1.4k, 1.8k
Nonlinear distortion at 0.25m-triplets centered at 150 hz, 400hz, and 850 hz.
Impedance data
From 20 Hz to 20k
A closer look at the region from 100 Hz to 5k.
Frequency response
Linear distortion
Nonlinear distortion data
Comments
The PHL 1120 did reasonably well. It had strikingly low nonlinear distortion at 850 Hz and reasonable numbers at 400 Hz. Neither did well at 150 Hz. The linear distortion curves are also good. Not as good as the M15, but as good as, or maybe better than the SS8545. Where the PHL excels is sensitivity. I measured a sensitivity of ~95 dB for the PHL. Certainly, if you need the sensitivity, this is a respectable driver. If you don't need the sensitivity, there are other drivers that test better.