How Much Power Does an Audio System Draw? - CLAMPING TEST

Summary

In this video, Peter from PS Sound conducts a quick test of a car audio system featuring dual 15-inch subwoofers and a three-way front setup. He emphasizes the importance of understanding power consumption, revealing that the system draws significantly less current than many assume during dynamic music playback. Peter highlights the efficiency of infinite baffle (IB) systems and the necessity of a stable power supply for optimal performance. Viewers are encouraged to measure their systems' current draw and voltage stability while prioritizing power supply over additional audio equipment for improved sound quality.

Takeaways

• 😀 The video showcases a car audio system setup with a three-way front and rear configuration and two 15-inch subwoofers.
• 🔌 Peter emphasizes the importance of understanding power consumption, noting that dynamic music typically draws less power than many expect.
• 📊 During testing, the system's idle draw was measured at 3.3 amps, peaking at around 60-80 amps during loud playback.
• 🎶 Misconceptions about audio power are addressed; while a 150-watt amp is used, actual draw for tweeters and mids is only about 10-20 watts.
• 🔊 The infinite baffle (IB) design of subwoofers is highlighted as requiring less current for effective sound production.
• 🛑 Peter warns against excessively loud systems, noting that such setups can harm hearing and compromise sound quality.
• ⚡ The power supply is crucial for high-quality audio; many enthusiasts neglect this aspect, focusing instead on amplifiers and speakers.
• 🚗 Most modern cars come equipped with sufficient alternators (120-150 amps) to support one and a half kilowatts of audio power.
• 🔋 Peter recommends investing in a robust power supply and considering additional batteries to enhance audio system performance.
• 📈 Viewers are encouraged to measure their systems' voltage drops to ensure optimal performance and avoid power supply issues.

Q & A

What is the main focus of the video?

The video focuses on demonstrating the power consumption of a car audio system with a three-way front and rear setup, along with two 15-inch subwoofers in infinite baffle (IB) configuration.

Why is the test described as not super professional?

The test is not considered super professional because it was conducted quickly due to time constraints, as the client was arriving soon.

What does the speaker mean by 'dynamic music' in relation to power consumption?

Dynamic music refers to tracks with varying loudness and energy levels. The speaker explains that, contrary to common belief, such music doesn't typically draw the high amperage that people expect.

What are the specifications of the amplifiers mentioned in the video?

The system uses a 150.6 six-channel amplifier for the front speakers and a 400.2 amplifier to run the two 15-inch subwoofers.

What voltage and current readings are noted during the testing?

The system operates at around 13.4 volts and shows an idle current of about 3.3 amps, increasing to a peak of around 60-62 amps when playing dynamic music.

How does the speaker address common misconceptions about power requirements for car audio systems?

The speaker clarifies that many customers misunderstand power requirements, often overestimating the need for high-powered amplifiers without realizing that the front end doesn't draw as much power as expected.

What advice is given for those looking to build a car audio system?

The speaker advises prioritizing a good power supply and battery setup over simply purchasing expensive amplifiers, emphasizing that stable voltage and current are essential for good audio performance.

What is the significance of using infinite baffle (IB) subwoofers?

IB subwoofers are highlighted for their sensitivity, meaning they require less power to produce significant sound levels, making them efficient for car audio systems.

What were the peak current readings during the music test, and how does this relate to sound quality?

During the test, peak current readings reached around 50-60 amps, with the speaker noting that the system could produce healthy sound levels without compromising sound quality.

What key point does the speaker make regarding voltage drop during operation?

The speaker notes that if the voltage drops below 12.5 volts during operation, it indicates insufficient power supply, which can affect the performance of the audio system.