Tag Archives: Preamp
These single supply op-amp hi-fi stereo tone control preamplifier circuit with TDA1054 IC built by SGS. TDA1054 is a 16-pin DIL package and integrates two separate preamp.
It is a low noise preamplifier with little or no problem in the construction process. The first half of the circuit (IC1A) has an input sensitivity of 3 mV and has a frequency correction of the C5, C3, R6 and R8 together. The bass signal from phono input is amplified, while the high signal is attenuated.
So I made ??use of contact microphones lot lately and I want to build a soft single supply buffer / preamp tone control battery powered. A few years ago, and it fits the bill in terms of design / size. It’s small, cheap, easy to do, and works with a 9V battery.
The problem is, I have not really heard much from each other, with or without him. The difference is subtle, even to the gain setting “high”.
6Z4 6N1 6DJ8 6922 preamp vacuum tube, Bass Treble Balance Valume control adjustable
Made for audiophile quality components to produce a large welded
Produce a clear, sweet and a good atmosphere
Adjustable EQ, Bass Treble Volume Balance adjustable
If only the board transformerless power supply and case.
Up for sale is a great set 6N1 tubes Kit Preamp with EQ, tube 6N1 (6N2 6N6 6N4 6922 6:23 6N11 6DJ8) tubes can be replaced, 6Z4 rectifier tube used to provide power to the filaments. Made a lot of audiophile quality components, such as Philips BC series rectifiers & MKT capacitors coupling capacitors, etc. Check the tightness of the PCB is 1.6 mm, are three holes in the tubes of heat and do exhaustive tubes stable work.
The idea of ??gainclone seem to have taken off in a rather important. There are some good reasons for it, and I found myself in the position where SWMBO (she must be complied with) was very nervous when I amp and added speakers to “his” space (which is actually a common room with TV, small speakers, a lounge and a [another] computer). No matter, because I do if I get a nice little amp, cleaned seemed thought it would be reassured.
The results shown in the photos below, and then they are not intended to be a final design, it turned out, very good looking. Very compact dimensions are only 220mm wide (at the front – the chassis 210mm), 50mm tall (without feet) and 190mm deep (no outputs). The members of the Assembly for the LM3876 power amplifiers is 10mm thick and is thermally coupled to the front of the 10mm and 3mm top and bottom plates, which in turn are also connected to the sides and back. The heat sink is much better than it sounds, and overall we can expect about 0.4 ° C / W.