![]() I am running a RPI4 and a Gustard A18 (which measures extremely well over btw) I've seen none that's been immune on upstream induced flaws. The impact depends on the filter capabilities of the DAC. Feeding clean power usually also helps.īut. Which of course is an noise source on it's own. Stream beside filtering the cable up to 40dB of noise. By using a HUB chip they reclock and regenerate the Instead of measuring filters, he measures DACs and then he rates the filters.Īctive devices are the better choice. I dont think anyone is really close to them at the moment.Forget the Audio Science Review stuff. Good idea on the stock, i'm doing the same, they producing results in a field that will inevitably replace fossil fuels and we all know how much money is there. so yeah if you are using them in a situation that can have a fault condition tghat means massive current is drawn, best to put some sort of protection there, because they will put out more current than heavy duty wires, heavy duty connectors and most heavy duty components will handle. Quite handy voltage for digital, I use them directly with some devices, but others I still use a low noise linear regulator in front of them. Using 2 in parallel will make a higher capacity, yes its the same as 4600mah it drops from 3.65 fairly quickly to 3v4 and then between 3.4 and 3.2 over pretty much all of the useable charge cycle, then drops off a cliff. each cycle will vary between 3.65v and you should cut off at 3v. I then wired this up to a hybrid Dsub connector so I could use a balance charger (charges each cell in a pack separately) and then tapped it for -6v6, '0v' 3v3 and 6v6. I bought single cells, the ones with solder tabs, but I removed the tabs and soldered packs of 4 and 6 in series directly to the end caps with 14AWG silver for lowest resistance (be quick when doing this, prolonged heat will lower the capacity, so use an iron tip with lots of mass) a single A123 M1 cell at peak charge will put out 3v6 at 70 amps continuously and burst of 120 ampsĭont buy the packs, as you found they are all a bit chunky and have unnecessary padding for our purposes. Hahaha, you will melt the wires before you run out of current capability on these things quite literally. I tried NiMH batteries and they paled in comparison to SLA, maybe because of the different current capabilities. How would the current from such a battery pack compare to that from a linear power supply fed by mains AC? Surely the noise would be lower from the batteries but I wonder about the difference in current. Should that be just as effective as a single 4600mAh pack? One of their retailers suggested I use a parallel connector to combine two 2300mAh packs. I'd like to get a 9.9v 4600mAh battery pack, but the A123 Racing (Enerland) pack with those specs stretches the pack out to 3 battery lengths which won't work in the space I have. The price is very low because they haven't turned a profit yet, but I figure their technology is excellent and they're in a high-growth industry. I'm actually thinking of buying some AONE stock. I've been reading a lot about the A123 batteries lately and they're supposed to be superior to anything else out there. ![]() Maybe replace the capacitors with Black Gates? Thicker power leads?Ĭlick to expand.I'm going to do exactly that. Does anyone know of an available linear power supply which would be suited to this?Ĭan anyone with audio DIY experience spot any other possible upgrades or improvements that could be made to the Ultravox. That makes me think I could do better than the SLA battery with a very quiet linear power supply. The sound was overall much weaker and thinner and lacked bass. I tried switching from the SLA battery to a series of AA NiMH batteries and the sound was substantially worse. To do that I need to replace the Ultravox's female A connector with a male B connector but I can't find a USB male B connector anywhere. I've been using a USB cable between the DAC and Ultravox but I'd rather plug them together directly. The USB connector on the DAC side of the Ultravox is a female A type and the DAC has a female B type. There are a couple problems with this setup and I'd love to get your advice on fixing them. The Ultravox and downstream DAC are powered via an SLA battery connected to the Ultravox. I've been using the DIY Paradise Ultravox (ADUM4160) to isolate the USB connection between my DAC and computer: Ultravox - SGD70.00 : Welcome to the diyparadise e-store!
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