Mark Audio CHN-70
This driver is boxed and sold in pairs.
The CHN70 is a Full Range design for use in many audio applications. Designed by Mark Fenlon and Evan Yu for use by audio end-users who want a high performance driver at a lower cost. This is a great little driver for those of you who want to get a flavour for wide-band drivers at a low cost of entry.
1 – Full Range operation (45Hz to 20kHz in box)
2 – Natural sound (near flat response)
3 – Long throw power-train design (Mech Xmax = 4mm 1 way)
4 – Heavy duty pressed steel frame, damped design!
5 – Easy surface mounting installation
The cone, coil and suspensions are all-new design. It profile shape is unique to this driver, to give it a neutral musical tone. The frame is made from 0.8mm high quality pressed steel with synthetic damping coating to reduce vibrations and for best environmental protection. The CHN’s sound character is natural, especially suitable for vocal reproduction. The CHN70 is suitable for sealed and ported box designs from 4 litres to 12 litres volume.
In a sealed 0.1 to 0.15 cubic foot box (about 4 liters), you should have a 3dB down response at about 119Hz.
In a ported box of 0.2 cubic feet with a 1.5″ diameter vent by 4″ long (or 1″ Ø x 1.5″ long), your f3 is about 70Hz.
Try searching on CHN-70 at http://www.diyaudio.com/.
Small to medium sized speakers are usually lower power designs. The power rating is given in the technical data for each audio driver. For a reliable long service life, please operate your new speakers with care.