2016-05-10 00:11 <whitequark> wow, kubuntu is hideously slow
2016-05-10 00:11 <whitequark> it takes 10 minutes to boot on my ssd for some moronic reason
2016-05-10 00:14 <whitequark> oh, just needed more RAM... 768MB not enough
2016-05-10 00:37 <whitequark> DocScrutinizer05: http://fehu.whitequark.org/files/kubuntulol.gif
2016-05-10 00:37 <whitequark> kubuntu boots in text mode but renders graphics into the framebuffer for some bizarre reason
2016-05-10 00:37 <whitequark> thats the weirdest glitch i've seen in a while
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2016-05-10 01:17 <whitequark> DocScrutinizer05: ok you're in luck cuz i found how to fix it
2016-05-10 01:22 <whitequark> DocScrutinizer05: do this (from build dir): git checkout .. ; git pull ; make ; ./src/solvespace
2016-05-10 01:22 <whitequark> should be fixed now
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2016-05-10 02:05 <DocScrutinizer05> wow, yes
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2016-05-10 02:13 <whitequark> yes to what?
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2016-05-10 15:15 <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
2016-05-10 15:19 <arossdotme> i see now what you mean, tas5630 isnt really a 300w amp cus buy that point its not sounding so good
2016-05-10 15:19 <DocScrutinizer05> so call it a 150W amp
2016-05-10 15:20 <arossdotme> yea :)
2016-05-10 15:21 <arossdotme> hmm
2016-05-10 15:21 <DocScrutinizer05> iirc decent HiFidelity amps from the analog age were speced at 0.1% THD or less at rated power
2016-05-10 15:21 <arossdotme> oh right
2016-05-10 15:22 <DocScrutinizer05> like "80W RMS at 4Ohm, 0.1% THD"
2016-05-10 15:23 <DocScrutinizer05> the went into like 50% THD shortly after that, which isn't a nice thing either
2016-05-10 15:24 <DocScrutinizer05> generally you never want to operate an amp at rated power
2016-05-10 15:24 <arossdotme> urrgh 50% icky
2016-05-10 15:24 <arossdotme> hm hmm hmm
2016-05-10 15:25 <DocScrutinizer05> but at least it shouldn't escape blue magic smoke when you do
2016-05-10 15:25 <arossdotme> heh :D
2016-05-10 15:25 <arossdotme> i see more why diyaudio.com people where keen about tpa3116. cus its at rated power below or upto 0.1%
2016-05-10 15:26 <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"
2016-05-10 15:27 <arossdotme> urrgh
2016-05-10 15:28 <DocScrutinizer05> silly little circuits size of a matchbox were suddenly tagged "50W"
2016-05-10 15:29 <arossdotme> i havent see that thankfuly in my young, recent years of looking at amps
2016-05-10 15:29 <DocScrutinizer05> 5.1 sets for a 100 bucks were suddenly "400W"
2016-05-10 15:29 <DocScrutinizer05> despite having a mains fuse of only 0.5A
2016-05-10 15:30 <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!
2016-05-10 15:31 <arossdotme> instead of depending on marketing description, or perception reviews
2016-05-10 15:31 <arossdotme> also so then i can have the amps battery powered. thanks a huge reason :D
2016-05-10 15:31 <arossdotme> thanks=thats
2016-05-10 15:38 <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
2016-05-10 15:38 <arossdotme> http://hifimediy.com/amplifiers/diy-amplifiers/T3-mono
2016-05-10 15:39 <arossdotme> looks like the tas5630 is better, and i think more efficient
2016-05-10 15:39 <arossdotme> better = lower THD?
2016-05-10 15:42 <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
2016-05-10 15:42 <arossdotme> his=runs
2016-05-10 15:42 <arossdotme> no his=has
2016-05-10 15:43 <arossdotme> tk2050 was a early class-d chip
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