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| What's the real reason that laptop batteries are made not-accessible? |
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| tooki:
--- Quote from: james_s on December 08, 2021, 08:10:13 pm ---I was not suggesting using the PAM8403 for driving headphones, I was using it as an example of a small, simple and relatively powerful audio amplifier that runs on a single supply and doesn't require large capacitors. I'm quite sure there are numerous parts on the market more suitable for driving headphones, I'm just not familiar with anything specific. The big problem with headphone audio through USB-C is there is only one port, you cannot plug in headphones (or an external amp) while the phone is charging. It's all kind of silly anyway, I already have exactly what I want, a standard headphone jack on my phone, so just keep making phones that have that, problem solved. There is no good reason to get rid of it. --- End quote --- There is no shortage of USB-C to headphone jack adapters that also have a pass-through USB-C port. I just bought one last week for my new iPad. Even though it’s only advertised for pass-through charging, it actually works for data, too! |
| SilverSolder:
--- Quote from: tooki on December 08, 2021, 11:49:12 pm --- --- Quote from: james_s on December 08, 2021, 08:10:13 pm ---I was not suggesting using the PAM8403 for driving headphones, I was using it as an example of a small, simple and relatively powerful audio amplifier that runs on a single supply and doesn't require large capacitors. I'm quite sure there are numerous parts on the market more suitable for driving headphones, I'm just not familiar with anything specific. The big problem with headphone audio through USB-C is there is only one port, you cannot plug in headphones (or an external amp) while the phone is charging. It's all kind of silly anyway, I already have exactly what I want, a standard headphone jack on my phone, so just keep making phones that have that, problem solved. There is no good reason to get rid of it. --- End quote --- There is no shortage of USB-C to headphone jack adapters that also have a pass-through USB-C port. I just bought one last week for my new iPad. Even though it’s only advertised for pass-through charging, it actually works for data, too! --- End quote --- Why force the customers to use adapters and dongles? The EU was right to force Big (Ripoff) Tech to standardise on one single charging port a while back... I hope the EU eventually investigates the "coincidence" that all the manufacturers drop replaceable batteries, ports, and SD cards from flagship models all at the same time. I don't think Big Tech are the good guys any longer... now, they are more like America's railroad robber barons back in the day! :D |
| PlainName:
--- Quote ---I think the disappearance of SD cards is surely due to pervasive availability of wireless networking and cloud storage? --- End quote --- Maybe because the phones just come with more flash now. A few years ago I regularly trimmed what was stored on the phone, and with my latest (which isn't even a current model) I just don't bother thinking about it. Actually, I lie - my real latest, which I don't use because I prefer the previous one, has just run out of flash, but that's because it's running two completely separate instances of Android so is really two phones sharing one memory. The other thing could be cost and space - leaving out the flash card means they don't need the carrier nor the electronics to access it. |
| NiHaoMike:
--- Quote from: tooki on December 08, 2021, 04:40:28 pm ---test after test showed the iPod and iPhone DACs to be exceptionally good. Even the microscopic ones in the Lightning headphone adapters test really, really well. --- End quote --- The DAC is good, the weak link has been the output capacitors that are sized too small causing the waveform to distort with headphones connected. (There was an article about that issue showing the waveforms that look good with nothing connected but become really distorted with headphones connected.) Hence why the external headphone amplifiers are able to work around it, by presenting a high impedance that masks the issue. I recall that Apple switched to a direct coupled design starting with the iPod Shuffle as the proper fix. --- Quote from: tooki on December 08, 2021, 11:49:12 pm ---There is no shortage of USB-C to headphone jack adapters that also have a pass-through USB-C port. I just bought one last week for my new iPad. Even though it’s only advertised for pass-through charging, it actually works for data, too! --- End quote --- Not only that, there are lots of cheap USB-C adapters that break out more USB ports, pass through charging, HDMI, and Ethernet. |
| cortex_m0:
--- Quote from: SilverSolder on December 08, 2021, 11:55:36 pm ---Why force the customers to use adapters and dongles? --- End quote --- Headphones with a cable have some technical advantages (most notably audio quality, no need to re-charge), but technical advantage does not imply a winning product. The consumer has embraced wireless headphones and rejected the dongle. The products in the marketplace will change as consumer preferences become more clear, and it doesn't look like a lot of consumers agree with you and me on the superiority of headphone jacks. --- Quote from: SilverSolder on December 08, 2021, 11:55:36 pm ---I hope the EU eventually investigates the "coincidence" that all the manufacturers drop replaceable batteries, ports, and SD cards from flagship models all at the same time. --- End quote --- At the time the iPhone eliminated the headphone jack, more than two-thirds of respondents to a web survey said they thought Apple removing the headphone jack was a mistake. I think it is clear now that their move was not a loser in the market place. So it's not a coincidence. The 3.5mm jack-free iPhone has been a success, since it was launched 6 years ago so everyone else followed. The iPhone has never had a user-serviceable battery or an SD card. |
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