Automotive Mobile Audio Video

The expectations of both drivers and passengers for electronic entertainment, communications and information have escalated since the introduction of the pioneering first practical auto radio, the Motorola branded AM car radio introduced in the 1930s by Galvin Manufacturing (who later changed their name to Motorola).

The latest cars, SUVs and trucks offer stock and premium entertainment packages beyond our wildest visions. DVD video with multiple fold fold-down LCD panel displays with fiber optic interconnection, navigation systems, Satellite/HD radio, mobile video and, THX surround sound.

Next generation electronic features and functionality will lend themselves to OEM equipped vehicles as designers struggle with size and weight reduction, long-term stability, environmental robustness, integration into larger assemblies and subsystems and the occasional request for cost down.

The Final Frontier

Interior space continues to get scarce and autosound aftermarket installers this year are confronted with a number of vehicles with none of the usual odd corners to install amplifiers, subwoofers and other electronic boxes. But while the OE interior engineers get to the scene first, the land grab is just as intense. While dashboard space is being eaten up by climate controls, air conditioning, air bags, navigation displays and so on, audio engineers are finding innovative technology in both audio electronics and speakers that provide significant space savings.

Until Panasonic introduced the first in-dash receiver utilizing high-power switching amplifiers this year (MXE CQ-C9800U CD receiver, 60Wx 4). the commonmost head end units was were limited in fewer than 20 watts per channel (with Alpine's V-Drive the former champion, at 26W x 4). Additional power and channels required amplifiers under the seat, built onto the speakers, or crammed into some other available space.

Higher power, in-dash head-end units have three significant implications for OEM designers. The Panasonic head unit offers more real power then many outboard amplifiers. A big impact is the space and heat savings. With the extra space created by getting rid of the heat sinks, OEMs can add better digital signal processors and bigger LCD monitors.

# posted by Medical Information : 6:07 AM