Note that there is very little in the way of protection circuitry and fuses in this amplifier. There is a short turn-on delay for the output power supply to minimise thumps, and a couple of line fuses, but no other protection. This is not recommended for most applications, since any problems caused by accident or parts failure can potentially caus
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e a huge amount of damage, up to and including complete destruction of the amplifier and any speakers that may be connected. However, the speakers that will be used with these particular amplifiers are almost indestructable, and the risk of catastrophic amplifier failure is more than compensated for with the better sound achieved by not including the extra circuitry in this case. Below is a picture of the bare printed circuit boards for the amplifer sections, as well as the bridging adapter, fully populated. These are home-made double sided pc boards created with the toner transfer method. And finally, pictures of the finished amplifier. The project has been a great success so far, with the first amplifier achieving or surpassing the original design goals. The sound is much more dynamic than the original, with sounds seeming to leap right out at you. Detailing is far superior, with a wider, deeper, very stable soundstage. And the amplifier runs much cooler, only getting a bit warm when run hard, as opposed to the original PS Audio amplifiers which required fan cooling at higher volumes. Power output is measured at 150 RMS Watts per channel into 8 ohm loads and 225 Watts into 4 ohms. This first amplifier will now be auditioned at length, with further refinements and improvements made. Eventually, the second amplifier will be constructed to match the first one, including any modifications. Updates, as always, will be added as...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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