How to Buy Car Audio Amplifier Equipment

Buying the amplifier and speakers for your car stereo system can enhance your listening experience. Follow these steps to hear the best sound possible while your drive.

Instructions

Difficulty: Moderate

Before You Buy

1. Determine what needs to be enhanced by locating the deficiencies in the current system. The bass, mid-range, high frequencies or the entire range may need enhancement.
2. Decide if speakers need to be added. If the current speakers are unable to keep up with the output power level of the new amplifier, new speakers may need to be purchased. If not, you risk blowing the speakers and the new amplifier.
3. Decide on a budget. Weigh the options between power and quality, loud music or subtle quality output.
4. Determine available mounting locations for the amplifier. Cars only have so much space. Check the trunk, under the seats or behind the seats as possible locations for the amplifiers.
   
   

At the Store

5. Look for the continuous power denoted with the term “RMS power.” The higher the RMS number, the louder, cleaner and more consistent the sound at higher volumes. This is the most important number to consider.
6. Look for the Total Harmonic Distortion. The ideal number should be 0.03 percent. Shoot for anything 0.05 percent or lower. Distortion ruins quality and hides all the subtleties of the music.
7. Look to see if the amplifier is Class A, Class B, Class A/B or Class D. The first three types support mid-range and high-range sounds. Class D amplifiers only support low-range sounds.

Tips & Warnings

• Remember you get what you pay for. Beware the $200 unit that pushes 1,000 watts. A quality 1,000 watts amplifier costs $1,000 or more. The guideline is minimum $1 per watt.
• Consider cooling for your amplifier. It needs an internal fan if it's kept in a confined space.

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