Sound Pressure Level Magnets

Description: A monochrome diagram displaying multiple Phon curves with labeled decibel sound pressure levels (dB SPL) on the y-axis and frequency in Hertz (Hz) on the x-axis. The graph features a barred frequency response with various curved lines representing different phon levels, such as 120, 960, 180, 900, and several instances of 'Phon'.

Description: A monochrome graph displays multiple wave-like lines representing "Loudness (n Phones)" plotted against "Sound Pressure Level in dB SPL". The background is black, and the lines are white with dashed horizontal grid lines. A zero point is marked on the y-axis.

Description: A monochrome graph with a black background and white grid lines. It displays multiple white curves representing sound pressure levels across varying frequencies. The Y-axis is labeled 'Sound Pressure Level' and the X-axis is labeled 'Frequency'. Numerical markers are present on both axes.

Description: Built to be LOUD & LOW. You're a BASSHEAD let the world know even when you're not in your ride....

Description: Does your audio system have what it takes? For the serious car audio enthusiasts with SPLs(sound pressure levels) that can give you a shakedown!

Description: When Your Lows Game is Pro Level......

Description: Let those that have never experienced what things look like when REAL BASS hits with this Tee....