CDT Audio systems in the Eurosport line utilize a 25mm soft dome tweeter a matching crossover and a large selection of mid/woofers in either of two configurations, separate drivers or quasi-coaxial Braxial configurations.
All mid/woofers utilize Kevlar fabric cones with semi-soft polymer domes and rubber surrounds. These superior divers feature virtually unlimited life and extreme "quietness". Ultra low distortion and smoothly controlled roll-off characteristics are provided.
The specific grain oriented construction exemplified in Kevlar fabric cones ensures that so called break-up is organized into a controlled polar oriented vibration modality that precludes harsh bell modes or random breakup. The result is astounding naturalness and precision. The measurements show smooth extension and glitch-free roll-off. The soft dome Euro tweeter has the classic dome shape and an ultra smooth response shape. This tweeter with its' excellent power handling ability is further cultured by the matching crossover that corrects the smoothly sloped response shape and corrects that shape. This improved shape is flatter and more extended as a result thereby giving the power handling benefit of a larger soft dome with the power response profile of a lower power handling 19 mm size driver. This is critical to natural airy sound yet with authority.
The two drivers are then also interfaced with each other with a proprietary crossover using an elliptical high-pass characteristic. This type of filter utilizes intra circuit phase relationships to produce rapid response changes. Within a narrow band signal cancellation by subtraction occurs allowing a rapid response roll-off without the attendant transient response smear and complexity of conventional high order filters. A negligible group delay characterizes this rapid shift, which essentially prevents the tweeter from interfering with the mid/woofer's smooth roll-off. The woofer is faded out gradually and smoothly, as this method is consistent with the best, perceived sound. The mid/woofer since it builds the body of the sound must be faded out cleanly and unobtrusively so the last faint high frequency sounds from it remain realistically connected to the lower frequency body of the sound. The result already very refined is stunningly accompanied by the rapid introduction of the precise relatively widely dispersed (compared to the mid/woofer at the crossover frequency) tweeter.
Overall, this is the sound of the CDT Eurosport line.
Embellishing this basic design approach are the Braxial models and the CDT-10LP image enhancement auxiliary tweeter kit.
The Braxial models place the same 25mm tweeter in a bracket on the driver that is off the mid/woofer axis. This ensures that the crossover interface will occur at the proper acoustic time and in the proper acoustic space. The off-axis orientation avoids acoustically resonant sound spaces within the assembly. Axial designs inherently incorporate a relatively high "Q" acoustic chamber in the region between the cone and the back of the tweeter. The offset of the Braxial lowers this "Q" to nil, and only one driver needs to be mounted per channel.
Many auto-sound systems cannot ideally provide for a convenient ideal mounting position. In some cases the tweeters may need to be mounted well below ear level. In order to embellish the extreme top end and to lift the image (usually toward the windshield area) the CDT-10LP Image Enhancement kit can add a dash of "air" and space to enable the best overall special character.
CDT Audio ES520 CDT Audio ES 520 Euro Sport 5.25" 2-Way Component Speakers |
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Astonishing Dimensionality
Fast, Clean Transients
Virtually No Listening Fatigue
Remarkable Up-Front Soundstage
1" Tweeter, 5.25" Woofer
130 Watts RMS Power Handling
Frequency Response: 65-20kHz
Sensitivity: 91.5dB |
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