The schematic shown, does no need any power supply because is a simple low frequency passive filter. It could be usefull if you want to drive an extra subwoofer from your stereo system.
The circuit filters the frequency ranges above the 150Hz. The schematic is calculated to work with a 50 watts audio amplifier, but can be used with higher powers as well.
The frequency can be adjusted with 2k2 potentiometer from 50 Hz to 160 Hz.
Chip Chick Maroo earphones have housings decorated with crystals and gems, making them fun fashion accessories in addition to being a solid product, oh – and they are made for women specifically. Fortunately these headphones aren't jus
No exhibition today, it seems, is complete without an -video component. Cutline has three, all interesting, each lasting around seven minutes and each projected, big and high, on a ick wall in the press room. One is a bonafide classic, Arthur
WZVN-TV Snapchat is maturing by playing catch up. The company unloaded half a dozen new features on Tuesday to make its app more useful, instead of just more entertaining. For starters, Snapchat now allows people to make voice calls, send me
When compared to other formats like subscription , digital download, and physical media, the critics say, YouTube's ad-supported approach doesn't pay out nearly enough. Now, the video site is offering some counterpoints. In a blog post titled
BGR It's time to close out the week with one last batch of paid iPhone and iPad apps on sale for free. Yesterday's list included a whopping 15 premium apps that were all made free for a short time, and a number of them are still free download
CNET There's also excitement around Nintendo games making their way to mobiles, the music industry records its best growth so far this century and the UK government spends £70,000 on Snapchat (but it's for a good cause). Plus we've bee
Audio Media International One question that is always asked by the engineering novice is the difference between studio monitors and their ethren destined for a domestic setting. Although we seasoned engineers may mumble something about 'rugg
CBS Local Even though the discharge goes through various and booms to become what's known as “produced” water, it still smells like crude. “This is stinking water that still has a bit of a sheen of oil on it, when it gets t
The Verge Hear works by taking in the ambient sound from around you and subjecting it to a variety of processing before channeling it into your headphones. I'm already hooked on the Happy mode, which generates a series of differently pitched