An AP subwoofer system is one which employs 2 enclosure volumes coupled with
a purely resistive element, the AP Mat. When such a system is properly
designed, it is possible to control the woofer cone movement by the energy
transfer though the precision acoustic resistance of the AP Mat. The completed
system will be considered A-periodic, or over-damped with a Q well below 0.7
Qts. In contrast, most car audio systems are grossly under damped, with Q's
greater than 0.8 and higher. These high-Q systems have poor transient response,
nasty peaks in their frequency response and high rates of roll-off. The result
of controlling cone motion with a resistive AP Mat is a very low system Qt.
A-periodic systems feature excellent transient and phase response, smooth
frequency response and extended very-low frequency reproduction with quicker
attack, less bass hangover and lower cone distortion.
Constructed of high-quality MDF and special high-density FMSTM damping material
Regains trunk space by using a very small box size (less than 0.33 cubic feet)
No expensive meters needed to "tune" the enclosure
Very predicatable flat frequency response
Power handling of small sealed box w/ bass of a large box.
Provides detailed bass response, and lower distortion.
Improved transient response versus other boxes designs.
AP Mat enclosures extend lower than conventional enclosures.
Comes with easy to follow installation instructions.
An AP subwoofer system is one which employs 2 enclosure volumes coupled with
a purely resistive element, the AP Mat. When such a system is properly
designed, it is possible to control the woofer cone movement by the energy
transfer though the precision acoustic resistance of the AP Mat. The completed
system will be considered A-periodic, or over-damped with a Q well below 0.7
Qts. In contrast, most car audio systems are grossly under damped, with Q's
greater than 0.8 and higher. These high-Q systems have poor transient response,
nasty peaks in their frequency response and high rates of roll-off. The result
of controlling cone motion with a resistive AP Mat is a very low system Qt.
A-periodic systems feature excellent transient and phase response, smooth
frequency response and extended very-low frequency reproduction with quicker
attack, less bass hangover and lower cone distortion.