Hi there! I like to make things and sometimes I make videos about them. I enjoy woodworking, I'm into hobby electronics, and I like to come up with audio projects every once in a while. Check out my DIY videos and weekend projects and tell me what you think about them in the comments! (Affiliate platforms used: Daisycon, Amazon, AliExpress)
That probably isn't a subwoofer. But you may consider a board with the LTK5128 chip. That works well from a 5V supply. Also look at the TDA7375. It is good for 2.1 systems
@@LeftyMaker Okay. I want to change the board of my existing sound box which has 11W power consumption. 2.5W x 2 + 5W subwoofer, Motherboard has Bluetooth built in.. So, I am asking you for a board.
@imrannazir5585 hmm, I don't think I've seen a 2.1 board for such low powers. The smallest are about 15-30W, like this one s.click.aliexpress.com/e/_EIs9XJV
The gain is a negative feedback loop following a simple inverting amplifier. The input impedance is 20K with a 0.39 uF cap giving 3dB point of (checks calculator) of almost 20Hz on the button. I'd say they're dreaming. :) Could probably push that to at least 100-200Hz without really noticing much of an issue unless you're driving a set of cans. The gain in their schematic is -2 (-1 * 20/20) but the upper limit is determined by the input level - a quieter source needs more gain so a volume control ahead of the gain stage would be a smart move. With 80K you'd have a gain of -5. The open loop gain is probably in 80dB or more even with a simple design. Negative feedback (and lots of it) lowers both noise and distortion which is why it sounds good. Thanks Harald!
I have red one and its connection sound is like black one. But there is one issue, whenever I play audio it transmits a hiss along with audio even when volume is zero. One way to avoid it is a RC filter at output but that reduces the high frequency performance.
Not only in Bulgaria. This system is widespread in all Warsaw Pact countries. In Russia, Belarus, Ukraine, and other countries that were formerly part of the USSR. And this wired broadcasting served, in addition to information, as a warning system for a nuclear strike or any catastrophes.
@@mateuszorlinski7334 Most simple ones were just speakers with cable. And you can use most of speakers as a microphone (try it with some old headphones, it's really mush better than cheap small microphones) So there is a rumor that KGB used these things to listen to some evening kitchen opinions of soviet citizens
@@lushbeard that's electricaly impossible. First - they could only listen when all transmission is off. Second - they'd voices from all of the speakers at once. I'd be easier to just install a regular wiretap.
A detail: Ground is on the sleeve[4] for a lot of other four poles connectors. Be aware that Ground and Mic are sometimes swapped depending on the make of a phone or computer. [4][3][2][1}tip So it might be like [G][M][R][L} or like [M][G][R][L}
I used one of these a few times, not more than 15 minutes tho. Today I was using it for about 5 minutes and my phone gave me a message that there was water in my charging port, did it damage my phone? And will apple care cover it if it’s damaged? I’m worried because I bought my iphone 15 less than a month ago 😭😭😭 p.s. It’s charging again, but I’m worried because the battery has been decreasing faster these days and idk if it’s bc of the fan
I'm from the Netherlands. My father once told me they had the same system in the 1950's. It was a radio distribution system because a lot of people could not afford a radio. Everyone knew what a real radio was but it was just too expensive!! The system was already built into the houses. But unlike to the system shown here there were stations to choose from. The little kids back then called it "radio from the wall"😊
I have the same speakers with a grey subwoofer enclosure. The one you have is the worst version of it. The satellites are going by "sony doubles" and the woofer as "miniwoofer" (they are very small compared to other crt tvs subs and they are just cute too :3) The one you have is made by matsushita panasonic and those black enclosures usually have a really stiff version of the driver. (There are different versions of that panasonic driver in those) There are countless versions of that subwoofer. Some even have a transparent blue or green enclosure! Those also come with 3 different drivers. These speakers are well known among the speaker community. They have a title of the legendary/immortal tv speaker set or stuff like that. Oh and did i mention that there are also different shaped enclosures for those subwoofers depending on the tv chassis I also tested one of these sets on my channel :) there are also countless videos of the different variations of these doing their thing.
The buttons literally send a pulse of the music down a wire, wach button has a different resistance causing a different pulse and the computer figures it out in its hardware
I think that this is how wired remote controls from the 70s worked, I found one and opened it up and I was disappointed that it was just a lot of resistors, maybe a diode or two. But potted ICs are the worst, just so boring and you can't learn anything from looking at it.
