JAMO C 80 manual Jamo Tech platforms, WaveGuide, DTT Decoupled Tweeter Technology

Page 5

Jamo C 80  page 0

Jamo Tech platforms

WaveGuide

WaveGuide refers to the unique way Jamo has shaped the tweeter’s face- plate. 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 tre- ble and midrange frequencies. In general, dispersion gets narrower at high- er 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 trans- mitted from the front baffle to the tweeter are reduced by more than 20dB resulting in an uncommonly detailed and realistic reproduction of high fre- quencies.

* Patent pending

dB (SPL) 120

110

100

90On-axis

80Off-axis

70

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  WaveGuide   

 

 

  Normal tweeter

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

200

 

 

500

 

 

 

1k

2k

5k

10k

dB

 

 

 

 

125

 

 

 

 

120

 

 

 

 

115

 

 

 

 

110

 

 

 

 

105

 

 

 

 

100

 

 

 

 

95

 

 

 

 

90

 

 

 

 

85

 

 

 

 

80

 

 

 

 

75

 

 

 

 

70

  Normal face plate 

  DTT

Overplot

 

 

 

 

20k

60.0

100.0

 

1000.0

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 listen- ing on and off axis.

Difference between vibrations in a normal face-plate and vibra- tions in a face-plate employing Decoupled Tweeter technology.

Image 5
Contents Let us entertain you Made for serious listening Jamo C 80 seriesMade for more Spelt with a capital C as in ConcertScreened for the screen Welcome to reality803 DTT Decoupled Tweeter Technology Jamo Tech platformsWaveGuide HCC Hard Conical Cone Centre-PlugBoundary Gain Compensation Motional Feedback MFBActive Impedance Control AIC Danish Sound Design