| Electronics > Beginners |
| The "I made this!" thread - Beginners achievements with pride. |
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| inventhouse:
Just installed one of the nifty DPS5005 power supply modules(*) driven with a 24V*1.8A into my "Hack-In-A-Box" toolbox, which also includes a RasPi 3, 7" LCD, 5V*7A power supply, extra charging ports, and a load of parts and tools :-DMM (*) https://www.eevblog.com/2017/10/11/eevblog-1030-20-diy-bench-power-supply/ |
| paulca:
Nice! I found the DPH5005 does a great job running on a LiPo battery. In your case a 24V 6 Series LiPo would work. They are quite small. |
| BrianHG:
Finally, built 2 Subwoff PCBs. Audio samples coming in 2 days. I'll be looking through Youtube movie previews & use one as an audio reference & provide 3 samples of original, Subwoff enhanced mixed audio and subsonic only at full blast. |
| BrianHG:
Holy S--t, this sounds insane with modern recordings which have VLF all over them. I'm adjusting 1 gain resistor value, otherwise, it all rumble and nothing else... Cad and now BOM updated here: https://www.eevblog.com/forum/projects/free-subwoofer-audio-processor-project-for-forum-members/ Preparing audio samples this Thursday... For some of you with good 20Hz sound cards/cd players/amps & OK speakers which go below 40hz, get ready to rumble. |
| paulca:
Not sure if it helps or gives you ideas, but the sub woofer I have for my car (with built in amp) exposes it's amp parameters. Freq - the peak point of the gain frequency. Q - The width of the frequency which is gained. Gain - How much gain is applied. Level - The amp output level. It's important when you put the woofer into an enclosed space that you try and avoid gaining too much frequencies that cause standing waves or resonance in the car body which just rattles stuff. I found with everything in the middle mine sounded fine until I put the back seat up, then it sounded boxy and boomy. So I dropped the frequency and tightened it little to avoid boosting the higher bass frequencies, this fixed most of that problems... just my fillings that rattled then. Also, enjoy this: |
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