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Selecting fine audio equipment such as the unit you’ve just purchased is only the start of your musical enjoyment. Now it’s time to consider how you can maximize the fun and excitement your equipment offers. This manufacturer and the Electronic Industries Association’s Consumer Electronics Group want you to get the most out of your equipment by playing it at a safe level. One that lets the sound come through loud and clear without annoying blaring or distortion—and, most importantly, without affecting your sensitive hearing.

Sound can be deceiving. Over time your hearing “comfort level” adapts to higher volumes of sound. So what sounds “normal” can actually be loud and harmful to your hearing. Guard against this by setting your equipment at a safe level BEFORE your hearing adapts.

To establish a safe level:

•Start your volume control at a low setting.

•Slowly increase the sound until you can hear it comfortably and clearly, and without distortion.

Once you have established a comfortable sound level:

•Set the dial and leave it there.

Taking a minute to do this now will help to prevent hearing damage or loss in the future. After all, we want you listening for a lifetime.

We Want You Listening For A Lifetime

Used wisely, your new sound equipment will provide a lifetime of fun and enjoyment. Since hearing damage from loud noise is often undetectable until it is too late, this manufacturer and the Electronic Industries Association’s Consumer Electronics Group recommend you avoid prolonged exposure to excessive noise. This list of sound levels is included for your protection.

Decibel

Level Example

30 Quiet library, soft whispers

40Living room, refrigerator, bedroom away from traffic

50Light traffic, normal conversation, quiet office

60Air conditioner at 20 feet, sewing machine

70Vacuum cleaner, hair dryer, noisy restaurant

80Average city traffic, garbage disposals, alarm clock at two feet.

THE FOLLOWING NOISES CAN BE DANGEROUS UNDER CONSTANT EXPOSURE

90Subway, motorcycle, truck traffic, lawn mower

100Garbage truck, chain saw, pneumatic drill

120Rock band concert in front of speakers, thunderclap

140Gunshot blast, jet plane

180Rocket launching pad

Information courtesy of the Deafness Research Foundation.

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Pioneer DEH-P640 operation manual We Want You Listening For a Lifetime
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DEH-P640 specifications

The Pioneer DEH-P640 is a versatile and feature-rich car stereo that delivers a superior audio experience for those who appreciate high-quality sound on the road. Renowned for its exceptional sound quality and user-friendly design, the DEH-P640 integrates various technologies and characteristics that enhance both functionality and convenience.

One of the standout features of the DEH-P640 is its Direct Sound Control function. This allows users to fine-tune their audio settings to achieve a personalized sound profile. The unit is equipped with a 4-band equalizer, enabling precise adjustments of frequencies to suit individual preferences and the acoustics of the vehicle. Additionally, the DEH-P640’s built-in MOSFET amplifier provides robust power output, ensuring that music sounds rich and detailed, enhancing the listening experience.

Another notable aspect of the DEH-P640 is its compatibility with a wide array of audio formats. It supports both CD and MP3 playback, giving users the option to enjoy their favorite tracks from traditional CDs or digital music libraries. The front panel features a convenient auxiliary input, allowing for direct connection of portable devices, such as smartphones and MP3 players. Furthermore, the unit is equipped with a USB port, enabling access to USB flash drives containing music files.

The DEH-P640 also incorporates advanced technologies for improved user interaction. Its bright, easy-to-read display keeps users informed about the current track and settings. Additionally, the stereo features customizable colors for the display and buttons, allowing users to match the unit with their vehicle's interior aesthetic. The simple interface ensures that adjustments can be made with minimal distractions, promoting safer driving.

For those who appreciate the processing power of digital audio, the DEH-P640 includes features such as Sound Retriever and Advanced Sound Retriever, which enhance compressed audio files by restoring lost frequencies, resulting in a more vibrant and engaging listening experience.

The DEH-P640 is designed not just for music lovers, but also for those seeking a comprehensive multimedia experience. With its range of features, high-quality sound output, and user-friendly interface, this car stereo has cemented its place as a popular choice among consumers looking to enhance their in-car audio experience. Overall, the Pioneer DEH-P640 is an excellent investment for anyone looking to elevate their daily commutes or road trips with exceptional sound quality and technological sophistication.
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