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Post by Deleted on Apr 23, 2011 11:55:50 GMT
Allan Are you using Linear PSUs for both internal and external ? Alex
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Post by Deleted on Apr 23, 2011 12:12:53 GMT
Hi Allan ''I had a look inside mine. It has a resistor network in it to go from TTL to spdif'' yes from what I've seen of some of the other brackets on Ebay they have some SM resistors for the SPdif conversion and and optical OP converter. as i say great VFM. ;D I'm glad to have had the conversation as it's helped with my learning. (my god i may know something by the end of this thread). Building Will's music PC has really helped me get to grips with the whole PC as a music source thing. I'm a sort of practical Learner type person. so it's much better for me to learn by doing. also the working with Windows 7 thread has been just great and pushed the SQ I'm getting much further. ''Atom pc/wav-player been on shuffle play all day(11hrs) with cover on''. ''no heat problems, standard case fan. cannot hear the fan. music on 2.5" external 500gb hdd by usb'' that's great news Allan and looks good for using that type of case. 8-)I'm using a 1Tb external USB for my main music storage but also Two of Alex's USB PSU which are just great for my DVD writer and flash drives. have you tried ripping to flash? i find the quality slightly (i like a bit of under statement)better with the USB PSU and flash compared to HDD especially with HD rips. I've had a trawl round Ebay and can't find and identical case but I'll take another look see. but it does look good for using that sort of case especially fore those in the er colder climates like us here in the UK. thanks for the report back take care Hi Alex you beat me to the post ;D
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pagan
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Post by pagan on Apr 23, 2011 12:52:23 GMT
Allan Are you using Linear PSUs for both internal and external ? Alex Hello Alex I'm back ;D Not external psu's yet. I did get a couple of usb power injector kit's last Thursday. Psu for pc looks switchmode internal that came with case with, external 12v dc adapter. Uploaded with ImageShack.usmain pcb uses standard 24 pin atx plug. Allan
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pagan
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Post by pagan on Apr 23, 2011 13:11:52 GMT
Hi Allan ''I had a look inside mine. It has a resistor network in it to go from TTL to spdif'' yes from what I've seen of some of the other brackets on Ebay they have some SM resistors for the SPdif conversion and and optical OP converter. as i say great VFM. ;D I'm glad to have had the conversation as it's helped with my learning. (my god i may know something by the end of this thread). Building Will's music PC has really helped me get to grips with the whole PC as a music source thing. I'm a sort of practical Learner type person. so it's much better for me to learn by doing. also the working with Windows 7 thread has been just great and pushed the SQ I'm getting much further. ''Atom pc/wav-player been on shuffle play all day(11hrs) with cover on''. ''no heat problems, standard case fan. cannot hear the fan. music on 2.5" external 500gb hdd by usb'' that's great news Allan and looks good for using that type of case. 8-)I'm using a 1Tb external USB for my main music storage but also Two of Alex's USB PSU which are just great for my DVD writer and flash drives. have you tried ripping to flash? i find the quality slightly (i like a bit of under statement)better with the USB PSU and flash compared to HDD especially with HD rips. I've had a trawl round Ebay and can't find and identical case but I'll take another look see. but it does look good for using that sort of case especially fore those in the er colder climates like us here in the UK. thanks for the report back take care Hi Alex you beat me to the post ;D Hi Alex Hmmm 2 Alex's this could be confusing I like the case because I wanted to use an audio card. On this case I can have the card laying away from the pcb, and room underneath the card for extra connections ie BNC The case is made in China by a Chinese company, so there should be other outlets worldwide. www.aywun.com/You could email them as I can't see Australia being there only outlet. The usb drive is just for convenience at present, it will be streaming from a NAS Allan
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Post by Deleted on Apr 23, 2011 16:03:15 GMT
Hi Allan are the USB power injectors the Jcar ones? if so I'd be interested to know how you go with them. that case is looking better and better sound card wise. I've found the manufacturer so I'll drop them a line. 8-)But maybe you AUS are the only ones left in the world with any money to spend so they are concentrating on you. the JLH USB are very good and you can't have toooo much of a good thing. maybe I'll go for 6 and have all of my flash drives plugged in at once then i wont need to get up to change tracks i have a 1Tb Qnap which runs my squeezebox which has been great and reliable. take care Hi all I'm ordering some caps from Jcar if anyone needs anything PM me.(Australians excluded) ;D take care
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Post by Deleted on Apr 23, 2011 22:42:56 GMT
Hi Shaun Allan would have got his from Altronics too. I don't think Jaycar supports that kit any more. Alex
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Post by Deleted on Apr 23, 2011 23:15:49 GMT
Hi Shaun Allan would have got his from Altronics too. I don't think Jaycar supports that kit any more. Alex Hi Alex yes I've not really had a look through the Jcar catalog so you are most likely right. edit I've just had a look through and found one listed No KC5399 USB so maybe just for the UK ::)it does not look much like a kit and looks more ready made. take care
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Post by jeffc on Apr 23, 2011 23:35:20 GMT
Guys, Happy Easter, the bunny called by, hopefully the Playboy type. I've been following this thread with interest as a dedicated music server has been on my "wish list" for a few years now. Interest in power supplies also as the bandwidth of the AK Class A HA must be way up where SMPS noise lives, and because of this it bloody well picks up HF hash/noise somehow via the USB connection from my laptop to the NFB-12 DAC. Noise disappears when the laptop is run off battery. Anyway, I’ve been looking for solutions to this problem in the way of high-current linear power supplies that could also be used IF I ever get to making a low-powered noiseless (except for a little transformer hum maybe) music server. Excerpt below is from a message on this to Alex this morning. BTW, I came across this linear PSU on eBay that might make for a good 19V supply for a laptop or 12V supply for a low-power PC music server. I have a couple of 300VA 9-0-9 transformers spare which if wired in series for 18V AC would probably work OK for these supplies, and then I can use that little Audiowind 'AC/DC in' regulator board I have for a 2-5A 5V supply using a TO220 LM338 regulator or similar for peripherals like an external 2.5" HDD/SDD. cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=290547727625&ssPageName=STRK:MEWAX:ITcgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=250499486450&ssPageName=STRK:MEWAX:ITcheers.. jeffc
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Post by Deleted on Apr 24, 2011 0:05:14 GMT
Hi Shaun Allan would have got his from Altronics too. I don't think Jaycar supports that kit any more. Alex Hi Alex yes I've not really had a look through the Jcar catalog so you are most likely right. edit I've just had a look through and found one listed No KC5399 USB so maybe just for the UK ::)it does not look much like a kit and looks more ready made. take care Hi Shaun That is a complete kit, but no longer available over the counter. Regards Alex
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Post by Deleted on Apr 24, 2011 0:09:08 GMT
Guys, Happy Easter, the bunny called by, hopefully the Playboy type. I've been following this thread with interest as a dedicated music server has been on my "wish list" for a few years now. Interest in power supplies also as the bandwidth of the AK Class A HA must be way up where SMPS noise lives, and because of this it bloody well picks up HF hash/noise somehow via the USB connection from my laptop to the NFB-12 DAC. Noise disappears when the laptop is run off battery. Anyway, I’ve been looking for solutions to this problem in the way of high-current linear power supplies that could also be used IF I ever get to making a low-powered noiseless (except for a little transformer hum maybe) music server. Excerpt below is from a message on this to Alex this morning. BTW, I came across this linear PSU on eBay that might make for a good 19V supply for a laptop or 12V supply for a low-power PC music server. I have a couple of 300VA 9-0-9 transformers spare which if wired in series for 18V AC would probably work OK for these supplies, and then I can use that little Audiowind 'AC/DC in' regulator board I have for a 2-5A 5V supply using a TO220 LM338 regulator or similar for peripherals like an external 2.5" HDD/SDD. cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=290547727625&ssPageName=STRK:MEWAX:ITcgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=250499486450&ssPageName=STRK:MEWAX:ITcheers.. jeffc Hi Jeff that 5A supply looks really interesting and good for the Wilbur. mmmmm i'm tempted. i noticed that When i started to use Alex's great USB PSU that the quality of my rips and playback jumped. so a linear supply for the PC would be interesting. you could try one on your USB between the laptop and DAC which would be interesting. anyway I'm off to EBAY for another look at that 5Amper. thanks for the info take care
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Post by Deleted on Apr 24, 2011 0:17:01 GMT
Hi Allan Only one Alex in these particular threads. Mike wouldn't be happy if there were 2 of us Just remember with those USB Power Injectors, that the original design sounds far too HF accentuated due to ceramic and tantalum caps, for Audio use as is, with a USB pen.This was verified during extensive testing of UL comparison .wav files with Geoff from NYC, who is a Computer Audiophile member. Clearly, the Silicon Chip designers are from the "Bits are Bits" brigade ! You can do things like bypassing the bridge rectifier and changing those capacitors mentioned, for what types you would normally use with audio, not RF ! For best sound,the 7805 needs to precede a JLH too. Alex
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Post by Deleted on Apr 24, 2011 0:28:59 GMT
That begs the question. Some software players such as Pure Audio and XXHE (www.phasure.com) copy the files to be played to system memory. Why should this be superior for playback when the .wav files from a USB stick powered by a good linear PSU are copied to system memory, which is powered by crappy SMPS,compared to playing directly from the USB stick powerd by a good linear PSU instead of crappy +5V USB SMPS ? It seems to me that further progress with PC Audio will not be gained until SSD ( which are also reported to sound different, according to which brand) and System memory (at least) is powered by CLEAN DC power, preferably from a linear PSU. Alex
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Post by Deleted on Apr 24, 2011 0:31:16 GMT
Hi Alex,
Care to eleaborate on that?
Cheers.
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Post by Deleted on Apr 24, 2011 0:46:32 GMT
Hi Alex, Care to eleaborate on that? Cheers. Hi Chris Even with those changes, it'still not in the same league as the JLH version that I posted. I will see if I can locate the original USB Injector. BTW, the kit from Altronics is for the earlier published version which can only supply relatively low power. The upgraded later version does use the same PCB though. Alex P.S. I used it with the BR diodes bypassed. (be careful with DC in polarity !) 10uF electro instead of tantalum, and a 470nF film capacitor instead of the original 100nF ceramic output capacitor. It then sounded far more natural. Of course, if you are from the "bits are bits" brigade, then it MUST be all in the imagination !!!
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Post by jeffc on Apr 24, 2011 0:56:56 GMT
Hi Alex, you know that I'm also thinking along the lines of an external SSD powered by a 2A 5V linear PSU + JLH and using eSATA connection, as there are plenty of external cases that have eSATA connectivity as well as sockets for a separate 5V DC supply, and which will avoid USB power hassles altogether. So from those on the computer audio forums that have been trialling SSDs of differing brands, is there any convergence yet on which sound better?
cheers.. jeffc
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Post by Deleted on Apr 24, 2011 1:03:03 GMT
Hi Alex, Care to eleaborate on that? Cheers. Hi Chris Even with those changes, it'still not in the same league as the JLH version that I posted. I will see if I can locate the original USB Injector. BTW, the kit from Altronics is for the earlier published version which can only supply relatively low power. The upgraded later version does use the same PCB though. Alex back from dinner! 03:00, must be mad. It was the Jaycar one I was looking at, the same part number Shaun posted. As for linear psus for the inner workings of PCs, great idea but sadly one the manufacturers are unlikely to follow, being green and saving money on standard. So just the DIY mob then!
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Post by Deleted on Apr 24, 2011 1:15:43 GMT
Hi Jeff There have only been a few reports to date, one was from somebody I trust That is why not so long back I posted an idea about a little box with 4 pin molex power plug coming in, and SATA power plug going out. It could be one of those adaptor cables cut in half even. Internally, both +5V and +12V would have say 100nF or more to 0 volts, followed by a 100uH 5 A choke (Jaycar etc.) , then a 2,200uF or 4,700uF low ESR capacitor to 0 volts on each rail. I believe the difference between these SSDs etc. is likely to come down to garbage from their voltage step up converters getting back into the SMPS . Alex
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Post by Deleted on Apr 24, 2011 9:11:09 GMT
Hi Chris good point the one thing that manufacturers can be relied on for is to produce things at a price (as cheaply as possible) so yes it's down to us as usual. but that's the fun of DIY luckily for us most of the budgeting can be undone with a little work. 12@5A linear PSU yes I'm up for that. I've ordered up one of those modules Jeff posted to see what can be done with it but it looks like just a case providing 15-20VDC to it and job's jobed. still we can have a chat about that when i run into problems ;D the only really expensive part is the transformer but apart from that just a bridge and a tank cap and let the reg do the rest. using a good quality linear PSU for my Flash and DVD burner certainly opened my ears to further improvements SQ wise of going a little further with the PC PSU. take care
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FauDrei
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Post by FauDrei on Apr 24, 2011 13:31:22 GMT
P.S. I used it with the BR diodes bypassed. (be careful with DC in polarity !) 10uF electro instead of tantalum, and a 470nF film capacitor instead of the original 100nF ceramic output capacitor. It then sounded far more natural. Of course, if you are from the "bits are bits" brigade, then it MUST be all in the imagination !!! "Bits are Bits" eastern front general FauDrei reports his utter belief in PSU importance. When a good "Bits Party" member listens to his gear, he is, in fact, listening to the quality and purity of his PSU. Music is there just to modulate the PSU output to his headphones/speakers. Therefore, true "Bits Doctrine" does not deny the PSU, not one bit. Parallel and multi stage class A PSUs throughout our "listening weaponry" are proofs of that. Differences in our doctrines originate from our fanatic belief that same bit sequences (that some call music) modulate the PSU output to headphones/speakers in the exactly same way every time one deterministically flows them through the same system. If differences are perceived - we always dogmatically blame the change in the system and/or system state. Bits are not to be touched, they are sacred and as such do not change. Ever.
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Post by Deleted on Apr 24, 2011 13:49:58 GMT
Hi FauDrei those are good and interesting points well made take care
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pagan
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Post by pagan on Apr 24, 2011 13:57:24 GMT
P.S. I used it with the BR diodes bypassed. (be careful with DC in polarity !) 10uF electro instead of tantalum, and a 470nF film capacitor instead of the original 100nF ceramic output capacitor. It then sounded far more natural. Of course, if you are from the "bits are bits" brigade, then it MUST be all in the imagination !!! "Bits are Bits" eastern front general FauDrei reports his utter belief in PSU importance. When a good "Bits Party" member listens to his gear, he is, in fact, listening to the quality and purity of his PSU. Music is there just to modulate the PSU output to his headphones/speakers. Therefore, true "Bits Doctrine" does not deny the PSU, not one bit. Parallel and multi stage class A PSUs throughout our "listening weaponry" are proofs of that. Differences in our doctrines originate from our fanatic belief that same bit sequences (that some call music) modulate the PSU output to headphones/speakers in the exactly same way every time one deterministically flows them through the same system. If differences are perceived - we always dogmatically blame the change in the system and/or system state. Bits are not to be touched, they are sacred and as such do not change. Ever. I'm a bit, yes and no. so what does that equal?
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Post by Deleted on Apr 24, 2011 16:04:33 GMT
A bit of a headache ;D seriously i think that it equals and open mind which can only be a good thing take care
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elysion
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Post by elysion on May 11, 2011 0:58:30 GMT
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rowuk
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Post by rowuk on May 15, 2011 12:34:38 GMT
P.S. I used it with the BR diodes bypassed. (be careful with DC in polarity !) 10uF electro instead of tantalum, and a 470nF film capacitor instead of the original 100nF ceramic output capacitor. It then sounded far more natural. Of course, if you are from the "bits are bits" brigade, then it MUST be all in the imagination !!! "Bits are Bits" eastern front general FauDrei reports his utter belief in PSU importance. When a good "Bits Party" member listens to his gear, he is, in fact, listening to the quality and purity of his PSU. Music is there just to modulate the PSU output to his headphones/speakers. Therefore, true "Bits Doctrine" does not deny the PSU, not one bit. Parallel and multi stage class A PSUs throughout our "listening weaponry" are proofs of that. Differences in our doctrines originate from our fanatic belief that same bit sequences (that some call music) modulate the PSU output to headphones/speakers in the exactly same way every time one deterministically flows them through the same system. If differences are perceived - we always dogmatically blame the change in the system and/or system state. Bits are not to be touched, they are sacred and as such do not change. Ever. Every time that we play back those bits, they are "transformed" from numbers to a stepladder "analog" signal that is then smoothed for listening. The opposite happens when recording. When "ripping" from a CD digital format to something else, there is also a transformation. The file on the hard drive is different than the file on the CD - even if the music bit parts are the same. With the bit use optimization on SSDs, I am sure that the file is yet different. I think that there is a repeatable difference, but perhaps NOT in the music bits part of the file, rather the error correction or in the file parameters. I am working on this as I hear things that I can't explain. I have taken some of Alexes comparison rips and put both versions into a 4 channel Cubase project. I then inverted the phase of 2 respective channels: perfect cancellation. These bits are the same. I raised the sampling rate, still perfect cancellation. Still the rips sound slightly, but repeatably different. I use Macintosh and a Focusrite 24 channel firewire converter. I really believe that the bits are sacred and are not the difference, but then, what is? I am working on it..............
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Post by Deleted on Jun 1, 2011 17:41:17 GMT
Hi All just a quick note to say that the SPDIF O/P recommended by Allen a few Post's back works really well. also Javier's heads up on the new Fidelizer is also top draw. the fidelizer full on mode is just sublime thanks for the info take care
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