through the core, continuing on in the same direction as before. Tin each end with solder all the way up to the core body. This winding is the 2 turn center-tapped secondary of T2.

ˆ45. Winding T1: Locate the remaining larger 2-hole ferrite core. Cut off a 10 inch length of the enameled magnet wire and thread the wire through the core 3 times, pulling each turn gently tight. That's 3 times through each hole resulting in 3 complete turns through the core. Again, the amount of wire cut for this task is the proper amount. If you have too little or too much, then you have not wound the core correctly. Tin each end with solder as before. Tin all the way up to the core body.

ˆ46. Cut off another length of wire, 9½ inches long. Wind 1 turn

through the core, loop out 1 inch, twist together and run one more turn through the core. Continue on in the same direction as before. Tin each end with solder all the way up to the core body. This winding is the 2 turn center-tapped primary of T1.

ˆ47. Locate the smaller transformer (T2) and install it snugly on the PC board.

ˆ48. Install the larger transformer (T1) into the indicated location on the PC board.

ˆ49. Install L1, a 12 turn toroid inductor wound previously. If desired, a small dab of hot melt glue, bathtub sealer, or caulk may be used to secure the toroids.

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Ramsey Electronics QAMP20 manual
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QAMP20 specifications

The Ramsey Electronics QAMP20 is a versatile high-fidelity audio amplifier designed to meet the needs of audio enthusiasts and professionals alike. This compact amplifier is characterized by its exceptional sound quality, robust construction, and user-friendly features, making it suitable for a wide range of applications, from home theater systems to professional audio setups.

One of the standout features of the QAMP20 is its power output. With a maximum output of 20 watts per channel, the amplifier delivers clear and powerful sound, capable of driving a variety of speaker types with ease. The QAMP20 is particularly well-suited for small to medium-sized speakers, providing ample power to enhance the listening experience without distortion, even at higher volumes.

The QAMP20 employs advanced technology to ensure the best possible audio performance. It features a class AB amplifier design, known for its excellent linearity and low distortion. This technology strikes a balance between performance and efficiency, ensuring that users receive high-quality sound while minimizing power consumption. Furthermore, the unit utilizes high-grade components, including capacitors and transistors, which contribute to its overall durability and reliability.

In addition to its impressive audio performance, the QAMP20 boasts a user-friendly interface, making it easy to integrate into any audio setup. It includes multiple input options, allowing users to connect various audio sources, including CD players, computers, and digital music players. The rear panel features standard RCA inputs, while the front includes a 3.5 mm auxiliary jack, providing flexibility and convenience.

Another noteworthy aspect of the QAMP20 is its compact design. The amplifier is lightweight and small enough to fit seamlessly into most setups without taking up much space. This portability makes it an excellent choice for both home and on-the-go applications, allowing users to enjoy high-quality audio wherever they are.

In conclusion, the Ramsey Electronics QAMP20 stands out in the crowded market of audio amplifiers due to its combination of power, advanced technology, and user-centric design. With its ability to deliver exceptional sound quality and its flexible connectivity options, it represents an excellent investment for anyone looking to enhance their audio experience, whether at home or in a professional setting.
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