Sound pretty inexpensive bed HI-FI circuit

The system includes a CD player, amplifier, speakers, power supply, and headphones. The Mitsumi CD player, designed for the United States, features a 4-speed CD-ROM launched in mainland China in 1997, equipped with an out-of-box key panel for speed adjustments. The device has the capability to read disks, while the home PHILIPS 731 CD turntable may experience playback issues. It is an economical choice with good sound resolution, although it may not drive headphones effectively. The homemade amplifier utilizes TL082 and TDA1521 circuits, as illustrated in provided figures. The power supply voltage should ideally not exceed 14V, with a minimum power output of 20W, using two 12V E-type transformers. All resistors are 1/4W with gold film, and domestic monolithic capacitors and polyester capacitors are employed. The TDA1521 input features SANYO's 47uF/6.3V organic solid capacitors and ELNA electrolytic capacitors rated at 560VF/35V, with a few imported capacitors influencing sound quality. The amplifier incorporates a 486 cooling fan to minimize noise interference. The car speakers are mounted with plastic shells, featuring Southern Whale YD-110-8SXA speakers, which provide frequency response data from mid-range to 10,000Hz, delivering deep bass and accurate vocals. Musical pitches above 8000Hz are limited. For audio testing, Tchaikovsky's "Piano Collapse Prelude" and "1812" showcase precise performance of steel instruments and brilliant copper wind instruments. The speakers have a 4-inch magnet, comparable to a 6.5-inch magnet, and are suitable for home use or main channel sound. The power supply operates with a "UPS," providing 14V/2A voltage; the battery capacity must not be lower than 4Ah to support fans and small reading lamps. A headphone amplifier can be constructed using two AD847 components, with recommended earbuds being S()NY 741 or PHILIPS SBC100, balancing performance with cost.

The described audio system is a comprehensive setup for music playback and amplification, featuring a combination of various components tailored for optimal performance. The Mitsumi CD player serves as the primary source, equipped with a 4-speed CD-ROM mechanism that enhances playback versatility. The amplifier, designed around TL082 and TDA1521 integrated circuits, is engineered to deliver high-quality audio output while maintaining efficiency. The specification of a dual 12V transformer ensures adequate power delivery, which is critical for maintaining sound fidelity and preventing distortion.

The choice of resistors and capacitors in the amplifier circuit is significant for sound quality. The use of 1/4W gold film resistors is indicative of a preference for low noise and high precision. The capacitors, particularly the SANYO and ELNA components, are selected for their reliability and performance characteristics, which directly influence the audio output quality. The inclusion of a cooling fan is a prudent design choice to manage heat dissipation, thereby prolonging the life of the amplifier components and maintaining consistent performance under load.

The Southern Whale YD-110-8SXA speakers are engineered to provide a balanced frequency response, making them suitable for a variety of musical genres. Their design allows for effective sound dispersion, ensuring that both mid-range and high-frequency sounds are rendered accurately, which is essential for critical listening applications. The power supply, with its UPS functionality, ensures uninterrupted operation, making it suitable for extended listening sessions.

The headphone amplifier section, utilizing AD847 components, reflects a commitment to high-quality audio reproduction in personal listening scenarios. The compatibility with popular earbuds like S()NY 741 and PHILIPS SBC100 indicates versatility and accessibility, allowing users to enjoy high-fidelity sound without the need for high-end headphones.

Overall, this audio system is a well-thought-out assembly of components that emphasizes quality, performance, and user experience, making it a valuable setup for both casual listeners and audiophiles alike.The system consists of a CD player, amplifier, speakers, power supply, headphones. Mitsumi CD machine designed for the United States and 97 years in mainland China launched a 4-speed CD-ROM, and to speed up the panel out of box keys, ability to read the disk, home PHILIPS 731 CD turntable machine can not properly put in here can play smoothly. It is inexpensive, high resolving power sound good, but not enough, directly with the headphones have a sense of not push it, but also the absolute value of the product, the same price of Hitachi products are mostly parallel, and can not directly play CD.

Homemade amplifier for the TL082 and TDA15 21, the circuit shown in Figure 5-74, as shown in Figure 5-75 6 aircraft power supply voltage is preferably not higher than double 14V, but the power can not be less than 20W, use two-12V E-type transformers. © resistance all 1 / 4W5 ring gold film 6 with domestic monolithic capacitors, polyester. TDA1521 input using SANYO's 47uF / 6, 3V organic solid capacitors t 560VF / 35v electrolytic ELNA as ordinary goods, where only a few pieces of imported capacitance is related to sound quality, can not be sloppy, but the price higher cell trial Amplifier use a cooling fan 486, substantially without interference noise.

Car speakers with the speaker tops plastic shell fixed two Southern Whale YD- 110-8SXA speaker proud that the number of frequency response data is amidships ~ 10000Hz, Xin real deep but not low frequency response fast, accurate and good vocals. In fact, musical pitch higher than 8000Hz is not much. Try to put Tchaikovsky's "Piano collapse Prelude", "1812", feeling the sound of steel most stubborn cases more accurate performance, copper wind instruments make you feel brilliant, I can not dive guns SPL is not.

But it is clear q connect a 1 yuan / m 30 stocks, "gold and silver" line. The speaker is 4 inches in the largest magnet, with some 6.5 inches magnet difference is not much, and shielded t can be used in the home or in the main channel sound. Power supply with "UPS", a 14V / 2A opening off all power generating voltage, power (lights) when the battery power supply, the circuit shown in Figure 5-76 4 The electric battery capacity can not be lower than 4Ah, the evening also led to a fans and air only, point a small reading lamp.

Students can hear the headphones made a headphone amplifier, preferably with two homemade AD847, headphones recommended S () NY of 741 earbuds and headphones PHILIPS the SBC100 is available in accordance with the economic strength q is characterized by performance balance. Cost-