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If you are thinking of replacing or upgrading your original factory fitted car radio but are unsure of the options, benefits and technical considerations, then read on, all will be explained.

Factory-fitted radios (standard fit radios) in the past had relatively low power outputs of about 3 to 5 watts RMS. However, the latest factory-fitted radios have improved vastly with power outputs of up to 100 Watts. These figures represent 25 Watts, ‘peak’ power per channel x 4 (this basically means x 4 speakers).

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Does The Alpine Audio Car System Stack Up
By Bowe Packer

For the diverse owners of cars it is sometimes necessary to make sure that assorted additions are included in the car. Many people spend a great deal of time in their car, so it is important to them to have in it what they want. One area that many car owners like to update is that of their car sound system. We all know you can spend at little or as much as you want in this area of upgrades. In this regard an Alpine audio system may rise to be invaluable.

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I have been to a lot of car audio shops that use test lights, and not as many that use digital multimeters. Is one really “better” than the other for finding power sources?

Absolutely! A test light looks like a screwdriver with a sharp pointed end, and consist of a small bulb and a grounding wire or cable. It works by grounding the bulb, and once it comes in contact with a power source, it will complete the circuit and light the bulb. This is the easiest way to test power because the bulb either lights up for power or doesn’t if their isn’t any power.

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