This is just a starting point: you need to do some guessing and tweaking when you know more about what's going on. Please note that your experiments may damage your amplifier and the fans (and possibly even your computer sound card), as they are not designed to be used this way. The simplest option for you is likely to buy a set of computer speakers with larger amplifiers built in (before buying check the box they come in for details on the actual amplifier power). Say 15W per channel (fan) should be enough to give you up to around 12VDC during the sound peaks to drive the fan. If you cannot turn your speaker volume up any higher (either with the physical volume knob or using the computers sound volume settings thru the desktop) then what you need is a bigger amplifier that you can connect between your computer and your fans. To keep it really simple, you cannot modify the computer's speaker amplifiers as they are not designed for that purpose, and changing the capacitors to larger ones won't give you more sound volume (and hence voltage for powering your fans). If you add a full wave rectifier (bridge rectifier + capacitor) between the fan and the computer amplifier you will convert the AC signal to a DC signal and get around 7.4VDC peak, although if you make the capacitor too large it will average out all the AC peaks that make up the AC sound (and your fans move). Note that this is an audio signal and so the current (and audio signal) is AC, your 12VDC fans are designed for DC (like the output of a battery). A standard computer amplifier (say 5W per channel) will put out around V=square_root(5W*8oh m), giving about 6.3V. This all works fine, but i don't think the amp is providing 12VDC I have asked questions here and i always get very helpful answers. I have tough myself everything i know about electronics, so im vocabulary is very small, so sorry if this is hard to understand. now that i think of it i have probably not provided enough information to get my problem resolved. There are many other components on the board, but for some reason i think these are important. The other capacitor is larger and is rated at 2200uf and 25 volts. The first is small and tan (sorry for not knowing the proper name for this kind) the only marking i can see on it says "104m" So i was wondering what modifications i would need to do to the amp to get the proper voltage output.įrom the amp board i can see that there are two capacitors between the - and +. This all works fine, but i don't think the amp is providing 12VDC to the fans. (the more base and the loader the song the faster the fans turn) When music is played threw the the amp, the motors turn in sync to the music (one fan for the left and one for the right audio channels) i have used the + and - outputs, that would normally connect to a set of speakers. Any help would be appreciated.But as it states i am interested in increasing the average output from a computer speaker sets' amp, in effect making the speakers "loader" The headphones and DAC/amp I have chosen have been based on simple research and budget - not experience. Note: if you have any other recommendations for products please let me know. ![]() Is there a way to do it easily and effectively without losing sound quality on either? My question is whether or not it is possible or reasonable to be able to switch between the LP2020+ speaker amplifier to the FiiO E10k DAC/Amp - in other words I want to switch from my speakers to my headphones while still using these amplifiers. From my research I believe the FiiO E10K would be a good choice for me. ![]() I realize that getting a DAC/amp for these headphones can drastically improve the quality. ![]() I am an avid Sennheiser fan think I'm going to go with the Sennheiser HD 558s because of their clarity and soundstage (don't listen to a lot of bass-heavy music so that weakness doesn't affect me as much). I also have been wanting a pair of good headphones for both gaming and listening to music. These are great for me (for now) and I still want to be able to use them for listening while not sitting at my desk. I currently have the Dayton B652 and LP2020A+ speaker setup for my computer.
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