QAMP-30 | Ramsey Electronics QAMP30 specification

•If helpful, gently bend the part’s wire leads or tabs to hold it in place, with the body of the part snugly against the top side (component side) of the PC board.

•Solder all wires or pins of the part, whether the 2 wires of a resistor or the 3 or 4 wires of a transistor.

•Trim all excess wires extending beyond each solder connection, taking care that wire trimmings do not become lodged in PC board solder connections.

1. Install S1, PC mount pushbutton switch. Solder all 6 pins securely.

2. Install J1and J2, PC mount RCA phono jacks. Solder all 4 pins on each securely as these connectors will be subjected to some stress when coax cables are connected to them.

3. Install J3, PC mount DC power jack.

4. Install relay K1. Notice that it installs only one way.

5. Install potentiometer R4. This pot allows adjustment of the bias to the power transistors.

6. Install C9, .01 µf disc capacitor (marked .01 or 103 or 10 nf).

7. Install Q5, 221334 PNP transistor; orient the flat side toward D2.

8. Install R6, 470 ohm resistor (yellow-violet-brown).

9. Install R10, 51 ohm resistor (green-brown-black).

10. Install R11, 2.2 K ohm resistor (red-red-red).

11. Install R12, 10 K ohm resistor (brown-black-orange).

12. Install D2 and D3, 1N4148 style signal diodes (glass body with black band). Pay special attention to the banded ends. The banded end on a diode is the cathode and must be oriented correctly or the circuit will not work. Both diode D3 and diode D2 are detectors for sensing applied RF power.

13. Install C10, .1 µf disc capacitor (marked .1 or 104).

14. Install R7, 100 K ohm resistor (brown-black-yellow).

15. Install Q3 and Q4, 2N3904 NPN transistors, observing proper orientation of the flat side. These two transistors amplify the signal diode's output to a level high enough to close relay K1.

QAMP-30 • 7

QAMP30 specifications

Ramsey Electronics QAMP30 is a versatile audio amplifier designed for a range of audio applications. This compact yet powerful amplifier is specifically engineered to provide quality sound in a small footprint, making it ideal for home audio systems, portable audio setups, and compact installations.

One of the main features of the QAMP30 is its robust 30-watt per channel output, delivering clear and dynamic sound that can fill a room. Its solid state design ensures reliability and durability, making it suitable for both casual listeners and audiophiles. The amplifier supports continuous operation, allowing users to enjoy music for extended periods without worrying about overheating or performance degradation.

In terms of connectivity, the QAMP30 is equipped with multiple input options. It includes RCA inputs for easy connection to various audio sources, such as televisions, DVD players, and computers. This flexibility allows users to integrate the amplifier seamlessly into their existing audio setups. Additionally, the amplifier features a 3.5mm auxiliary input, further expanding its compatibility with portable devices like smartphones and tablets.

The QAMP30 also incorporates advanced circuit design technologies to enhance audio performance. Its low noise floor and high signal-to-noise ratio ensure that audio playback is clean and free from unwanted distortion. This feature is particularly important for critical listening environments where audio fidelity is paramount.

Moreover, the QAMP30 has an integrated volume control knob, giving users direct access to adjust their listening levels easily. The simple, user-friendly interface and compact design permit versatile placement in various setups, whether on a shelf, desk, or installed within a larger audio system.

Furthermore, the amplifier is equipped with built-in protection features, such as thermal overload and short-circuit protection, safeguarding the device and connected audio equipment from damage. The overall build quality of the QAMP30 reflects Ramsey Electronics' commitment to producing reliable and effective audio products.

In summary, Ramsey Electronics QAMP30 is a compact, powerful audio amplifier featuring 30 watts per channel output, multiple input options, advanced circuit technologies, and built-in protection features. Its user-friendly design and high-performance characteristics make it an excellent choice for anyone looking to enhance their audio experience.