Optimus CD-3680 (42-5075), CD-3690 (42-5076) owner manual Specifications, Audio

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42-5075.fm Page 22 Thursday, August 12, 1999 1:03 PM

SPECIFICATIONS

AUDIO

Frequency Response (±3 dB)

20–20,000 Hz

Dynamic Range

80 dB

Signal-to-Noise Ratio

80 dB

Harmonic Distortion at 1 kHz

0.07%

Separation at 1 kHz

55 dB

Wow/Flutter

Not Measurable

Earphones Output (10% THD at 32 ohm)

7 mW + 7 mW

Line Output

0.6 V

SIGNAL FORMAT

Sampling Frequency

44.1 kHz

Oversampling

8 Times

Quantization Number

16-Bit Linear/Channel

Transmission Bit Rate

4.3218 Mb/Second

Signal-Processing Rate

352.8 kHz

PICK-UP

Tracking System

3-Beam Tracking Servo Type

Object Lens Drive System

2-Dimensional Parallel Drive

Optical Source

Semiconductor Laser

Wavelength

780 nm

GENERAL

Power Requirements

DC 3V; Two AA Alkaline or

 

Rechargeable Nickel-Cadmium Batteries (not supplied),

 

DC Adapter (supplied)

 

AC Adapter such as 273-1664 (not supplied),

Power Consumption

8 W

Battery Life (EIAJ Method)

................................................. 7 Hours (with DAS2 off)

Dimensions (HWD)

11/8 × 51/16 × 53/8 Inches (32 × 129 × 137 mm)

Weight (without batteries)

9.5 oz (270 g)

Included Accessories

Y-Cable, DC Adapter, CD-to-Cassette

 

Adapter, Carrying Case (CD-3690 only)

Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.

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Contents Portable Compact Disc Player Features Digital Anti-Shock System DAS2Line Out Jack and Supplied Y FCC Information Contents Powering the CD Player Using BatteriesRecharging Nickel-Cadmium Batteries Using Vehicle Battery Power Using AC PowerFm Page 9 Thursday, August 12, 1999 103 PM Connecting Earphones Headphones ConnectionsConnecting Amplified Speakers Fm Page 12 Thursday, August 12, 1999 103 PM Loading a CD OperationPlaying a CD Digital ANTI-SHOCK System DAS2 Automatic Search Music System AsmsViewing the Elapsed Time Locking ControlsTurning E-BASS on and OFF PAUSE/CUE Audible SearchIntro Scan Repeat PlayRandom Play Programmed PlayResume Troubleshooting Care and Maintenance Replacing the DC ADAPTER’S Fuse CD Care TipsSpecifications AudioFm Page 23 Thursday, August 12, 1999 103 PM RadioShack Division of Tandy Corporation Fort Worth, Texas
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CD-3690 (42-5076), CD-3680 (42-5075) specifications

The Optimus CD-3680 and CD-3690, products 42-5075 and 42-5076 respectively, represent a significant advancement in compact disc players, offering a blend of innovative technology and user-friendly features. Designed for both audiophiles and casual listeners, these models exemplify the quality and convenience of modern audio playback.

One of the standout features of the Optimus CD-3680 and CD-3690 is their high-fidelity audio output. Both models utilize advanced digital-to-analog converters (DACs), ensuring minimal distortion and maximum clarity in sound reproduction. The emphasis on audio quality allows users to enjoy their favorite music as the artists intended, with rich tones and intricate detail across the frequency spectrum.

In terms of technology, these CD players incorporate a robust error correction system that reduces playback issues that may arise from scratches or dirt on CDs. This feature enhances the reliability of audio playback, allowing users to listen to a wider variety of discs without interruption. Additionally, both models are equipped with a powerful motor and precision laser mechanisms, which contribute to swift and accurate disc reading, minimizing access time and enhancing overall user experience.

The design of the CD-3680 and CD-3690 is both sleek and functional, featuring a user-friendly interface that includes an intuitive remote control. This allows for easy navigation through tracks and playlists, empowering users to tailor their listening experience to their preferences. The clear display screen shows essential information such as track number, time elapsed, and remaining time, ensuring that users are always informed about their audio playback.

Another notable characteristic of these models is their compatibility with various audio formats, including CD-R and CD-RW. This versatility makes it easy for users to enjoy personalized playlists or compilations, broadening the scope of their listening choices.

In summary, the Optimus CD-3680 and CD-3690 stand out in the crowded market of audio players. Their high-quality audio output, advanced error correction technologies, sleek design, and user-friendly functionalities make them ideal for anyone seeking a reliable and enjoyable compact disc listening experience. With these models, music lovers can rediscover the charm of CDs with modern performance enhancements.