At CGN audio labs we know our history because we truly stand on the shoulders of giants. The fact that the CGN1808 is available today is only trough the help of many friends. We are dedicated to giving credit where it is due to all the people involved. First to Bob Diamond the engineer who really got the original Neo ring magnet (NRT)1808 designed more than 17 years ago. We want to thank some of our customers who were with us at the re-begining, David Lee and Johan van Zyl. They "Keep the Faith" and created one of the best homes for this woofer design, the family of Bassmaxx Technology Horns.
The short list of cool guys that have networked to support us over the years. Pat Conneen, DJ Killeen, Bob Schermerhorn, Ralph Gonzalez, Ed Zarate, Steve Romeo, Roy Delgado
Some Final observations
Today the cost of amplifier power and powerful DSP is relatively low. The limiting factors in most audio systems are directly related to the problems in the speakers. To truly take advantage of all this new audio technology it is best to get the best tranducers you can find. After all there is no knob that eliminates distortion!
When the coil is in the gap is when distortion is lowest. In a conventional woofer the need to use a top plate to create the magnetic feield across the gap is the Achilles heel of the design. In the B-Hive Motor we have completely eliminated this problem by using a "radially" magnetized Neodymium ring magnet to create the proper magnetic flux across the gap.(No Top Plates) Now we are limited only by how tall we make the magnet and how far the suspension can travel.
Most woofers that use Neodymium magnets still use top plates. The Neo magnet is often a slug in the middle of the coil or a ring with standard North-South magnetic polarity orientated along the axis of the cone travel.. This causes all kinds of thermal problems, excursion limitations and often leads to failure at high power levels.
The magnetic field of the ring magnet is already orientated perpendicualer to the axis of cone travel. The Neo in the B-Hive motor is outside the coil and surounded by a large steel pot structure that works as a heat sink. In operation our woofer runs at about half the temperature of conventional speakers. Typically the temperature is about half that of a conventional woofer, so thermal problems are avoided. Power compression is greatly reduced
There is no substitute for cubic inches. If you want to make bass you have to move some air. Because the B-Hive motor moves further it can play lower and louder. Double the excursion means four times the acoustic output. Also look very carefully at a woofers efficiency numbers many of the "super subwoofers" on the market today claim to handle a lot of power but have too much moving mass (Mms) to get loud. Their extemely l1W/1M SPL ratings mean that they an never keep up.
It is our opinion that most of the major audio companies today are not pushing the envelop when it comes to transducer design. At CGN pushing the limits is our goal.
Follow the RIGHT HAND RULE !
