Recent content by zhoufang
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Emu 0404 $139 + free $100 mic at Musician's Friend
Dear XXXX: Thanks again for your order IXXXXXXXXX. We've just heard from our supplier that the backordered item(s) shown below are now due to arrive at our warehouse at a later date. Backordered Items: Item: 242516 03 E-MU 0404 USB 2.0 RECORDING INTERFACE KC Previous Date: 20080228...- zhoufang
- Post #100
- Forum: Computer Audio
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Music, Films, and books that MEAN something!
-----------this message IS FOR rodentmacbeastie ONLY and is irrilavent to this thread I got my set a year ago at Sim Lim Square 3rd floor, the 1st shop you see when you go up by escalator, the Name of the shop is Han Brother. So far my experience with this shop is pleasent. The price I paid... -
My PPA clone
as I was not getting enough voltage to OPAs, I increase the battery pack from 16 cells to 24 NiMH cells. So the total voltage is around 30V (+-15V, just right for OPA627/637). As I did that the J-fets eats more voltages, taking around 9-11V per rail. So I was still getting less than 10V...- zhoufang
- Post #25
- Forum: DIY (Do-It-Yourself) Discussions
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Do you find the emu 1212m boring?
The first time I heard my 1212M I was extremely disappointed, for the exact reason that is sound boring. As time goes by I seems to like it more. On the 2nd day it sounded noticably better, and by now a week later I like it quite a lot. I will not say that I'm surprised though, that's because...- zhoufang
- Post #19
- Forum: Computer Audio
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EMU 1212M modding guide
Thanks for your response! it is useful to me.- zhoufang
- Post #24
- Forum: Computer Audio
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EMU 1212M modding guide
Quote: Originally Posted by ghastlyone I recently bought a 1212m from a user on here (twodeko) and it was modded with AD8620s by another user on here (Zemo) who did a nice job. I can't comment on how it compares to a stock 1212m though. so do you notice it sounding artificial or...- zhoufang
- Post #22
- Forum: Computer Audio
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EMU 1212M modding guide
Lucpes, Good to hear that the bypassing helps, this means I still have headroom to grow since I haven't mod the bypass caps yet. Did you bypass from rail to rail for each opamp? The nearest ground I can find is quite a distance away. I'm planning to use PCM=5 Wima MKP2 0.15uF for the...- zhoufang
- Post #19
- Forum: Computer Audio
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EMU 1212M modding guide
Yesterday I was listening to the card straight after the mod. Now my 1212M has being running for about 12 hours since the mod. (before the mod is runned for about another 12 hours). I don't know is it placedo or it's my brain getting used the the 1212M sound (it's true that I find myself get...- zhoufang
- Post #14
- Forum: Computer Audio
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EMU 1212M modding guide
Thanks for the advice I was using 25W iron initially. Later changed to 40W, which works well. What I was saying is that the sound was pretty bad to start with, and did not improve noticeably after the mod (without doing AB test though). So it either improved a bit or stayed the same. I...- zhoufang
- Post #9
- Forum: Computer Audio
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EMU 1212M modding guide
texts moved from the main post to a reply, so that the auto line-break will work. 1st phase of mod done, with one screw up. Before the EMU my best source was th line out from Creative jukebox3. It links to a PPA V1.1 clone then to HD650. The sound from this system was excellent! The music...- zhoufang
- Post #7
- Forum: Computer Audio
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How did you mod your emu?
regarding removal of muting transistors, I believe it can be potentially hazardous. Unless I'm wrong, the giant C72 and the circuit at the left of it will mute the lineout when the power is been turned on. And for 1212M the only DC blocking cap is found betweeen the DAC and the buffering...- zhoufang
- Post #30
- Forum: Computer Audio
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EMU 1212M modding guide
lucpes you are right. VR1 on 1010 output 1.8V, so C64 will only need 2V tolerance. in fact my last GIF diagram only showed circuit for the power regulation for the analog lineout section. I will compile of list of the caps in the digital section that are of your interest later. I have...- zhoufang
- Post #6
- Forum: Computer Audio
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EMU 1212M modding guide
all caps that are directly in the line of power regulation for the analog lineout are drawn in the circuit above (unless I missed out some tiny bypass caps) Amount all the electrolytic caps that need to be changed, the highest voltage they will get is 12V. In fact more than half of them...- zhoufang
- Post #4
- Forum: Computer Audio
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AustralAsia Group Distribution for Sennheiser connectors.
I just received my plugs. Thanks for your effort!- zhoufang
- Post #84
- Forum: DIY (Do-It-Yourself) Discussions
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EMU 1212M modding guide
There have been a lot of discussion about EMU 1212M, including general discussion modding. But until very recently there's very limited specific instruction or solid contents, so much so that I can't be sure of what part I will need before I actually get my card and do some reverse...- zhoufang
- Thread
- Replies: 26
- Forum: Computer Audio