hi, spent some time on gathering information about rail splitter and also about buffers. having not a lot of knowledge about electronics I understood only few things but what I figured out is, that I should use this (it is from the headfier thedoctor posted in this thread HERE #39) as a...

@heatmizer thought about using buf634 for the rail splitter but the buf634 is hard to get here. I would have to mailorder it from digikey or so and that is really expensive. also found a rail splitter on tangentsoft.net (HERE) with a TLE2426 but it is the same problem. think the easiest would...

Hello diyers, Since I have two more weeks from college of, I want to build a portable solution for my headphones. So I already got a cmoy but want to build a Sijosaes amp. I just wanted to ask if you could check my layout. It is from Sijosaes Simple ClassAB amp. Link from Sijosaes amp...

hi, just wanted to say that I found my mistake. should have read the link from achina more carefully. did not connect the case with houseground. now I did that there is NO rush when coming close to the tube! and now

@tomb I soldered a wire from pin1 to that pad but it got even worse. the rush was there even without comeing to close to the tube. and music only played on one side. now I desoldered everything and it only rushes when I come to close to the tube about 5mm. @yen the amp stands away from any...

O.K. I used some spare time and did that job. It worked. Now the rush, when touching the pot is gone! Thanks to Yen and tomb The problem with the tube is not gone so. I took some pictures maybe the problem can be seen easier. Can not see a groundpad on that tube?

And again thanks for your help Sometimes a picture is worth more than a thousand words. especially in my case

Finaly I finished my SOHA. Here are some Pics: Thanks to all you DIYERs!!! Without you guys I would have had a very hard time putting this together and figuring out some mistakes I made .

@Yen Thanks for your answer. Yes it is an AlpsPot I think a RK27. So I should wire from the potground on the pcb to a screw on the pot? But what confuses me is that when I come to close to the tube there is a rush too.

Hello, thanks to everybody I finally finished my SOHA. It works now fine, but there is only one thing I am not pleased with. When I connect my mp3-player and do not play music and just touch the volume nob and turn it louder I get a rush in my headphones. Is it a ground problem? Where could...

@headphonejunkie thanks a lot for your quick answer! Does the wiring has to look like that: EDIT: To SAFE my pride I have to delete this Used the mouser IEC power entry module with fuse holder Partnumber:693-6200.4315 EDIT: FallenAngel Thanks for your answer I think it is to late...

Hello diyers, so I almost finished my SOHA. Installed all parts and now... The first time I applied power, the fuse in our house went out!!! What happend??? Double checked the power cable wiring, like shown on mb3k.com homepage. Everything looked right to me. Do you have a clue what...

@FallenAngel thanks a lot for your quick answer! I think I will use the same regs. Otherwise I would have to desolder the CCS and buy the TO220 in 12V. Hope that is right. But I heared there are some Buffers from Steinchen on its way for the soha that use 15V. greets kim Edit: Oh I...

Hello, I bought a SOHA Kit Already working on it and it went pretty good until now. And now I have a problem and need some help from you guys. Here it comes: I had to desolder the LM78L12 Regulator and the LM79L12 Regulator. Now my question is if they are easy to break? Because they...

thanks a lot for all your help I think I am going to buy the MS-1 insted of the SR80. greets sphinxllama

Hi, after looking around for some portable headphones I found the grado sr-80 and the alessandro ms1 to be a good headphone for rock musik. so now I found out which headphone to buy I have another question. As the titel says, I would like to know if there is any difference between this two...

@heatmizer that soha looks great. the green leds are pretty cool too

hi, thanks for your quick answers! i do not understand a thing you wrote. mybe some of it but i am a newbe in diy and my english is not that good eather just finished my first cmoy. it worked great and now i want to step up. so the easiest way would be to buy the opa2134 and just build as...

Hi, this amp looks great and I plan on building it. most of the parts I got at my local electronic dealer. but I have difficulty to get one of this opamps I listed below: AD823 / OPA2134PA / OPA132 / OPA134 / OPA2107AP / OPA2227PA / OPA2132PA does anybody have experience with other opamps...

but if i solder all the pins from the switch to ground i also connect all the pins...

at first thanks a lot for so many suggestions. maybe it is really the problem because i use a ON/ON 4p like this one here: http://www1.conrad.de/scripts/wgate/...0&cachedetail= and i just connected the ground from the 47nF to the ground of the cmoy. i use a plastic enclosure, so do i...

Hello, I finally build my first cmoy and it worked out fine... till I used my EP630 headphone with it. First of all I used the tangentsoft.net tutorial and this crossfeed (http://www.hifi-forum.de/extURL.php?...sproject2.htm). Now my problem is, that I checked the amp with some cheap...

@Ballooshi: Hi, yes I used the page you posted for the mod and a german forum! Used Panasonic FCs and 1%Resistors. I think I have to change the cables from my cross-1. Used much to thick cables with 1mm diameter audio cable. Now there are to many wires and I cant close the box! How...

As an HeadAmp I use a modded B-Tech 928 and headphones are DT880 from Beyerdynamics. To me its a real good combo! Maybe my next project is a better headamp but I have to search for a good an cheap one! OK I put them on again

@Ballooshi Thanks a lot for your tireles help till the end. It runs now for only 20 minutes but my impression is that it works and it works really great. All the work was worth it!!! I am really impresed by this little box how it can rock my headphone. (I think this is the best...