Tech Term |
Decoded |
Utilized |
| Kevlar | A light, strong woven synthetic fiber impregnated with a stiffening resin that cures during the cone forming process. The cone is then further treated with a polymer coat, which seals the fibers and adds damping. | The midrange is where the real musical action is invariably found, and a smooth midband is an invaluable loudspeaker quality. Enter Kevlar. It’s been B&W’s cone material of choice since 1974, and with good reason. The use of Kevlar results is a semi-flexible cone, which exhibits a peculiar style of break-up behavior, not found in more conventional materials, that maintains a more constant dispersion pattern at all frequencies in its range and transmits far fewer delayed, time-smearing sounds to the listener. Not only does it deliver a cleaner sound, it can do so to a wider group of listeners. You will find Kevlar drivers in:
800 Series models 800D, 801D,802D, 803D, 803S, 804S, 805S, HTM1D, HTM2D, HTM3S, HTM4S, DS8S, SCMS. CM Series models CM1,CM5,CM7,CM9,CMC & CMC2 XT Series models XT2,XT8 & XTC 600 Series models 683,684,685,686 HTM61,HTM62 & DS3 FPM Series models FPM2,FPM4,FPM5 & FPM6 The complete CT Series In-Wall models CWM500,CWM650,CWM800,CWM-Cinema,CWM-LCR7, CWM-LCR8, In-Ceiling models CCM50,CCM65,CCM80,CCM746s,CCM816,CCM817 & CCM818 |
| Rohacell(R) | Rohacell(R) is a sophisticated composite construction having a hard foam core, sandwiched between carbon fiber skins. |
B&W bass drivers are backed up by an imposing magnet/voice coil system to preserve the speed and ’slam’ of the most demanding bass lines. The construction of the cone is critical. What we’re aiming for is ‘perfect piston’ behavior: the ability to move air with complete freedom while resisting deformation.
The cone must be as light as possible for maximum agility, but absolutely rigid in order to retain its shape as it pumps in and out. Rohacell(R) is a sophisticated composite construction having a hard foam core, sandwiched between carbon fiber skins. It’s the kind of material normally used for aircraft, rockets and performance cars bodies. So high air pressures are definitely not a problem. For speed, stiffness and unshakable bass, it’s the bottom line. You will find Rohacell drivers in: 800D, 801D, 802D, 803D, 803S, 804S,HTM1D, HTM2D, HTM3S, ASW825, ASW855, CT8LR, CT8DS, CT8CC, CT8SW, CWM8180. |
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