Mark Audio, CHP-70A-NP

CHP-70A-P, Gen. 2 Full Range audio driver  4″ Natural Paper Cone

This updated (Gen. 2) CHP-70 driver is designed to make a semi-vintage classic sound,
similar to the smaller full range driver designs from the 1950ʼs. Its middle-high range output
has been made to “roll-off” from 7-kHz up. This helps to keep the high range sounding smooth
and warm. This driver makes the singers voice sound very natural, a little warm, pleasing for
many hours of listening.

The CHP-70 Gen. 2 will assist in the control of sharp or hard sounding compressed music
(digital) . This CHP delivers a tone that appeals to classic music enthusiasts using smaller
amplifiers. The off-axis and sound-spread of the CHP-70 is excellent. This driver is capable of
filling a room environment with an “easy listening” experience, especially for human voice. The
bass response from the CHP-70 Gen. 2 in a properly tuned box is excellent for this smaller
sized driver. Typically, in a Bass-Reflex or Vented box, lower responses close to 40Hz can be
obtained.

• Imp – 8 Ohm
• Fs – 72Hz
• Qts – .52
• Vas – 4.7L
• SPL – 86.5dB
• Xmax – 2mm
• Improved stiffer frame
• New cap design
• New Japanese designed coil
• New spider

CHP-70 Gen 2 Natural Data Sheet