The CDT GOLD Technology UpStage System 500-Series was developed by CDT StageFront audio engineers to create a superior live event listening experience in vehicles of all types.


Attending the live event:
The impact of CDT StageFront technology is immediately obvious – the voices and instruments seem to magically take shape in a seamless sound stage directly ahead above the dash. The result is to create a listening experience that is much more like the experience of attending the live event – the musicians and sound sources seem to be arrayed in front of you as if you were sitting at the live concert first row.Several psycho-acoustic effects need to be accomplished in order for this to work so well.

High frequencies to the front:
The sound image is moved more towards the front of the vehicle by gradually shifting the highest frequencies exclusively to the front of the vehicle, purposely directing (cross-firing) them inward and at an angle, using the windshield as a virtual ground plane. It is unlike any conventional speaker placement philosophy, but no other system creates the imaging effect of StageFront?
Less "highs" from the doors:
All door speakers in the system are sheped and blended to keep the existing (typically two-way) door speakers radiating nearly flat power up to carefully lowered upper cutoff frequency.These higher frequencies are typically directional and can interfere with the angular dispersion pattern created by the StageFront? super tweeters mounted ?“cross-firing” up on the dash. This careful shaping and blending process enables the dash mounted tweeters to work transparently without creating a haze of localized reverberation in the front of the car. Unless the special StageFront? universally compatible blending filter modules are used, the added tweeters would actually collapse the more natural and transparent frontal sound field that StageFront? creates. Our extensive listening tests support this conclusion. The effects of StageFront technology are NOT subtle.

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