Custom Car Stereo - Audio Components

System Design:	Overall System planning tips. Brief description of each component and their interaction.
Typical Systems:	Tips for designing different types of sound systems: Basic (for people on a budget), competition level and SPL systems.
Head Units:	Features to look for (controls, power, outputs, security). Kits and plugs, FM modulated CD changers pros and cons
Speakers:	What speaker to buy, based on size, shape and specifications. Obtaining best sound possible from you speakers
Subwoofers:	Free air, sealed, isobaric, band-pass, membrane enclosure configurations
Crossovers:	Active vs. passive crossovers
Equalizers:	Basic concepts such as frequencies, octaves, Q values, mono vs. stereo. Differences between parametric and graphic, active and passive equalizers
Amplifiers:	What specs really mean. Picking the right amp. Calculating "real" power of an amplifier. Different types