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  1. biuro74

    LM1894 - what's FM apps ?

    Hi,   I'm finishing my 2.1 speaker project and I've applied LM1894 noise reduction chip. I'm wondering what would be a difference if I use "FM application" mode (with coil which forms 19kHz filter for FM pilot) - instead of hook-up pins 8 and 9 with 47nF cap ?   Anybody here knows what...
  2. biuro74

    [newbie] My first build done: AB Class Ampli - unexpected issues - please help

    Hello,   So I'm in progress of doing my 2.1 project. I've done few steps, some of them works, some of them need some rework. Today I need help with my amplifier "build" - it's done just to see how it works with my configuration (vintage computer + 12V + 4-10W speakers). Later it will be put...
  3. biuro74

    Internal speakers + TDA1519 ? My first newbie build - please help with any suggestions :)

    Hi again,   I'm crystallizing my idea to build internal speakers for some device.   So far I ended up with: * 2 x Visaton FRWS 5 (4 OHm, 4-10W) * 2 x custom bass (subwoofer, but I don't think so) speakers taken from Acer Aspire 5920 * 2 x TDA1519 (2x6 W each) - one for pair of...
  4. biuro74

    2.1 internal project - step 1

    Hi,   I'm going to build internal sound system - 2.1 speakers for stereo system with real track separation (not channel only). It means I have to join bass to both left and right channels.   Does it look as it should ? I start from the scratch, I mean I have no knowledge how to start...
  5. biuro74

    Acer Aspire 5920 Bass Speaker: how to use it ?

    Hi,   I've bought above mentioned speaker to put it to my project: internal 2.1 speakers.   Now my question is: how to connect it ? It has got 5 wires, how to check which is what for ? I presume: 2 for speaker itself, 2 might be for additional power (?) and there's still one left.  ...
  6. biuro74

    Built-in speakers DIY - how to ?

    Hi,   I'm going to build own internal speaker system to mount inside a computer as I've grown to do something in my life ;-) You know, spare time, willing, curiosity etc.   Audio source: 2xRCA stereo output.   I'm starting to find out all "tech speaking", and I'm trying soldering, so...
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