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Drivers

Tweeter

The DTT/WaveGuide tweeter in the C 80 series is a completely new development.

One of the biggest challenges when designing speakers is preventing unwanted

cabinet vibrations from clouding or colouring the sound. High frequencies are par-

ticularly susceptible. This problem has effectively been solved thanks to the inge-

nious Jamo Decoupled Tweeter Technology (DTT).

Difference between vibrations in a normal face-plate and vibrations in a face-

plate employing Decoupled Tweeter technology.

By decoupling the tweeter from the rest of the loudspeaker, vibrations transmitted

from the front bafﬂ e to the tweeter are reduced by more than 20dB, resulting in an

uncommonly detailed and realistic reproduction of high frequencies.

Another big challenge is to secure a uniform dispersion pattern in the treble and

midrange frequencies. In general the dispersion gets narrower the higher the fre-

quencies – and this applies to both midrange and treble. Consequently in the area

where the mid/woofer and the tweeter should integrate smoothly, you'll have a

mid/woofer with a narrow dispersion and a tweeter with a relatively wide disper-

sion.

This problem is solved with the Jamo WaveGuide, which is a carefully designed

concave faceplate into which the 1in DTT tweeter is integrated. Doing so 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.

Normal face-plate