2.1 KiB
2.1 KiB
Start looking into speaker design: https://www.diyaudioandvideo.com/Tutorial/DesignBuildSpeakerBox/
- The 2 speakers we have are car speakers and might not be great aren't great at low-ranges (a car typically has some seperate woofers around? Frequency range we have now is 45 - 22,000Hz which is reasonable)
- The IQaudio board we postponed because it was out of stock everywhere might still get interesting if we add a seperate woofer (which we could have facing backwards with the 2 smallers speakers on the front left/right) In this case we'd be feeding into a crossover first, seperating low/high frequency to the 2 different amps. The one for low-frequency could be merged into mono again after amplification (doubling the max power for our sub while also allowing us to tune its amplification seperately. The loss to mono is very acceptable for our use case especially if its only for the subwoofer) organization wise, it could be looking a bit like a a retro speaker.
- IQaudio DAC is back in stock. (TODO: Can't find much about driving 4ohm speakers with these, whereas the sparkfun one explicitely specifies it can and should)
- If it does go with 4ohm speakers we can find subwoofers on the same site that supplies the iqaudio: https://www.reichelt.de/nl/nl/subwoofer-inbouw-30-cm-1800-w-jvc-cw-dr120-p306980.html?&trstct=pos_1&nbc=1 ...it is however rather large (30cm, wheras we are currently using 10cm speakers. Might not be bad if the IQAudio is only tuned for 8ohms speakers, as it is gonna be hard to find woofers that are not car-size (e.g. 30cm/12inch) and we won't get much to choose from (additionally 8ohm might be easier on the AMPS power rating?) Look for build-in speakers if we want to find woofers under 12inch, e.g: https://www.bax-shop.be/nl/interne-speaker-componenten/8-inch-luidsprekers?filters%5Border%5D=score&filters%5Bprice%5D%5Bmin%5D=0&filters%5Bprice%5D%5Bmax%5D=100&filters%5Bq%5D=&filters%5B20676%5D%5B%5D=83266&filters%5B20676%5D%5B%5D=83262&grid=list which for example gets us this one: https://www.bax-shop.be/nl/8-inch-luidsprekers/visaton-w-200-s-8-inch-woofer-115w-8-ohm