| 00:11.35 | whitequark | wow, kubuntu is hideously slow |
| 00:11.42 | whitequark | it takes 10 minutes to boot on my ssd for some moronic reason |
| 00:14.50 | whitequark | oh, just needed more RAM... 768MB not enough |
| 00:37.00 | whitequark | DocScrutinizer05: http://fehu.whitequark.org/files/kubuntulol.gif |
| 00:37.26 | whitequark | kubuntu boots in text mode but renders graphics into the framebuffer for some bizarre reason |
| 00:37.36 | whitequark | thats the weirdest glitch i've seen in a while |
| 01:17.26 | whitequark | DocScrutinizer05: ok you're in luck cuz i found how to fix it |
| 01:22.13 | whitequark | DocScrutinizer05: do this (from build dir): git checkout .. ; git pull ; make ; ./src/solvespace |
| 01:22.16 | whitequark | should be fixed now |
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| 02:05.59 | DocScrutinizer05 | wow, yes |
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| 02:13.22 | whitequark | yes to what? |
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| 15:15.36 | arossdotme | hmm been looking at the datasheets again of the tas5630 and tk2050... hmmm tas5630 isnt as good as tpa3116 THD wise. the tas5630 thd+noise shoots up around 150w from 0.1% to 1% 200w and then for the last 100w its 1%-10% urggh me thinks. hmm |
| 15:19.12 | arossdotme | i see now what you mean, tas5630 isnt really a 300w amp cus buy that point its not sounding so good |
| 15:19.23 | DocScrutinizer05 | so call it a 150W amp |
| 15:20.28 | arossdotme | yea :) |
| 15:21.03 | arossdotme | hmm |
| 15:21.15 | DocScrutinizer05 | iirc decent HiFidelity amps from the analog age were speced at 0.1% THD or less at rated power |
| 15:21.29 | arossdotme | oh right |
| 15:22.28 | DocScrutinizer05 | like "80W RMS at 4Ohm, 0.1% THD" |
| 15:23.31 | DocScrutinizer05 | the went into like 50% THD shortly after that, which isn't a nice thing either |
| 15:24.27 | DocScrutinizer05 | generally you never want to operate an amp at rated power |
| 15:24.48 | arossdotme | urrgh 50% icky |
| 15:24.56 | arossdotme | hm hmm hmm |
| 15:25.01 | DocScrutinizer05 | but at least it shouldn't escape blue magic smoke when you do |
| 15:25.10 | arossdotme | heh :D |
| 15:25.56 | arossdotme | i see more why diyaudio.com people where keen about tpa3116. cus its at rated power below or upto 0.1% |
| 15:26.57 | DocScrutinizer05 | then came China and PMOP or whatever the term, like "this amp *could* deliver 200W, for 1 microsecond, to an ideal zero Ohm speaker, when you operate it on 500V mains and give it thicker internal wiring" |
| 15:27.45 | arossdotme | urrgh |
| 15:28.18 | DocScrutinizer05 | silly little circuits size of a matchbox were suddenly tagged "50W" |
| 15:29.04 | arossdotme | i havent see that thankfuly in my young, recent years of looking at amps |
| 15:29.18 | DocScrutinizer05 | 5.1 sets for a 100 bucks were suddenly "400W" |
| 15:29.32 | DocScrutinizer05 | despite having a mains fuse of only 0.5A |
| 15:30.51 | arossdotme | The reason im buying amp boards is so then i know what chip im getting and so (depending on the quality of the components) i know what specs i should be getting thanks to the datasheet! |
| 15:31.23 | arossdotme | instead of depending on marketing description, or perception reviews |
| 15:31.53 | arossdotme | also so then i can have the amps battery powered. thanks a huge reason :D |
| 15:31.58 | arossdotme | thanks=thats |
| 15:38.10 | arossdotme | im trying to understand how this does 300w into 4ohm or 150w into 8ohm when the datasheet graph for parrell outputs doesnt go that high. the graph is also marked at being for 30Vin wheres hifimediy say 48Vin |
| 15:38.11 | arossdotme | http://hifimediy.com/amplifiers/diy-amplifiers/T3-mono |
| 15:39.12 | arossdotme | looks like the tas5630 is better, and i think more efficient |
| 15:39.22 | arossdotme | better = lower THD? |
| 15:42.28 | arossdotme | i have a http://hifimediy.com/amplifiers/diy-amplifiers/T1-M-amplifier which runs hoter and his a higher current draw then the tpa3116 but it does have slightly or a little lower noise floor |
| 15:42.35 | arossdotme | his=runs |
| 15:42.45 | arossdotme | no his=has |
| 15:43.34 | arossdotme | tk2050 was a early class-d chip |
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