HEATKEYS

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

DIY Audio and Video: FAQs, Tutorials, and Calculators for Speaker Boxes, Crossovers, Filters, Wiring and more.

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Comprehensive home theater product reviews, tech articles, buying guides, and consumer electronics news! Get the latest equipment reviews and tech info on HDMI 1.3 A/V receivers and processors, HD DVD, Blu-Ray and more.

Computer based analyzers for electronic and electroacoustic measurements. Computer Aided Engineering Software.

Free vehicle wiring diagrams and technical information for car stereo, car alarm, electronics installers. Ohm

YouTube is a place to discover, watch, upload and share videos.

An Autodesk blog for to discovering, exploring, and validating new approaches to design technology. It reaches out to the largest community of early adopters of design technology in the world – Autodesk customers. Autodesk Labs makes emerging desig...

The premier site for high end mobile audio discussion and product reviews.

The online community for car audio beginners, enthusiasts and professionals. Find, compare and review the hottest car audio components, installers and installation shops in the world. Buy or sell your car stereo gear in our free online classifieds, s...

Car audio technical information with more than 125 individual pages, 50+ calculators and wav files. The covered topics range from basic electronics theory to more advanced topics such as speaker impedance as it relates to frequency, damping factor a...

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Northwestern University Department of Electrical Engineering & Computer Science, McCormick School of Engineering and Applied Sciences