Jamo C 803 Catalog - Page 5

Jamo Tech platforms Jamo C 80 page 0 WaveGuide WaveGuide refers to the unique way Jamo has shaped the tweeter's faceplate. The result is a controlled sound pattern with a more open and dynamic reproduction of sound. WaveGuide makes it easier to position the speakers in the room. Another big challenge is to secure a uniform dispersion pattern in the treble and midrange frequencies. In general, dispersion gets narrower at higher frequencies. Consequently in the area where the mid/woofer and the tweeter should integrate smoothly, the mid/woofer has a narrow dispersion and the tweeter has a wide dispersion. This problem is solved with the Jamo WaveGuide. The completely smooth design of the WaveGuide also reduces diffraction to an absolute minimum. Finally, the WaveGuide increases treble output in the lower treble range which means the tweeter needs less power for the same SPL. So, power handling is improved and distortion is reduced. DTT (Decoupled Tweeter Technology) DTT* (Decoupled Tweeter Technology) is a remarkable mounting system specially developed by Jamo. One of the biggest challenges when designing speakers is preventing unwanted cabinet vibrations from clouding or colouring the sound. High frequencies are particularly susceptible. This problem is solved using the ingenious Jamo DTT. By decoupling the tweeter from the rest of the loudspeaker, vibrations transmitted from the front baffle to the tweeter are reduced by more than 20dB resulting in an uncommonly detailed and realistic reproduction of high frequencies. * Patent pending dB (SPL) 120 110 100 ▲ On-axis 90 ▼ Off-axis 80 70 60 50 40 30  20 100 WaveGuide Normal tweeter 200 500 1k 2k 5k 10k 20k The WaveGuide results in a uniform treble dispersion pattern from 10kHz all the way down to the critical x-over point at 2kHz and thus secures a seamless transition to the mid/woofer - both when listening on and off axis. dB 125 120 115 110 105 100 95 90 85 80 75 70 Overplot  Normal face plate 60.0 100.0 DTT 1000.0 Difference between vibrations in a normal face-plate and vibrations in a face-plate employing Decoupled Tweeter technology.