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O2 AMP + ODAC - Page 280

post #4186 of 4199

Building a PC and building this amp are two very different projects.

 

At least buy the barebones printed circuit board and use it for your build.

 

One of the things that make this O2 amp great is the layout, without using this pc board you most likely will not get close to the specs of the original design.

 

Good luck, I hope you know how to solder and debug circuits.

 

Alex

post #4187 of 4199
Oh god.. I hope my brother can understand the circuit well LOL. Sorrry for the noob question but is there 2 circuit in the diagram?
post #4188 of 4199
One is the power supply (upper), and other other is the amp proper (lower).
post #4189 of 4199
Oh i thought the O2 will always need a battery to run. That means i can use the power supply instead of battery? That's nice. Thanks man!!
post #4190 of 4199
Why do you need the schematic? Buy the PCB and case at jdslab. The PCB has a silkscreen of all the components so you just drop the right part in there and solder. I use my o2 as a desktop amp with no batteries, just a wall adapter.
post #4191 of 4199
Quote:
Originally Posted by MrKazador View Post

Why do you need the schematic? Buy the PCB and case at jdslab. The PCB has a silkscreen of all the components so you just drop the right part in there and solder.
Yeah, that...+1
post #4192 of 4199

You really need to go over to his site and do some slow reading to understand what your getting into....

 

Alex

post #4193 of 4199
Quote:
Originally Posted by mahaqmi View Post
 

Hi guys. I am trying to build the O2 amp myself to save money rather than buying fully assembled (not really experienced, but since i can build my own PC and save cost so why not?).

I have found the website to buy the parts but can someone give me a link to the design (circuit design)? I have searched at the NwAvGuy blog but cant seem to find the circuit design. I apologize for asking a stupid favor (im a noob with this thing). My brother will also help me since he have more experience with doing this type of project


No offense mate, but saying you knowing how to build a PC helping you is more or less the same thing as you claiming to know how to shoot because you played a shooter. Nada. If you can't read the blueprint, or even something relatively simple as understanding how the thing is biased to achieve a certain gain, just swallow your pride and buy the whole thing assembled. If you think you'll save money by going this way, if you're inexperienced, you'll just end up wasting more money (from the wrong components. bad solder joints), lack of quality control from lack of testing equipment (ie. no sound or, worse, your amp delivering a dose of DC to your headphones), and most importantly, waste a lot of time which in the end is fruitless because you don't understand it.

 

If you're still keen, well, I guess go ahead. If I were you, pay heed to the other member's suggestions and grab the kit from JDS Lab or something. At least that stuff will work provided you follow the instructions.

post #4194 of 4199
Thanks for all of the replies and suggestions. Im still not sure to build it or buy it assembled. I need to wait for it next week and in the mean time i will checkout and read the nwavguy's blog for more info. Anyway, i didnt expect building an amp would be the same like building a pc but im trying to cut cost as i have read the assembled is near double the price. Sorry if i make anyone feels uneasy because of my silly questions towards the o2!
post #4195 of 4199

ditto...

post #4196 of 4199

Building a PC nowadays is nowhere near the complexity as what it was 20 years ago. Back then you must have at least a basic knowledge of electronics. Not just finding where each part fits. You can easily blow up a card just by setting the wrong jumper or inserted in wrong orientation.

 

Nonetheless a DIY project gives one a sort of satisfaction. But for the inexperienced, you should start with the kit and should follow the instructions. Plan ahead and read nwavguys blogs and don't be discouraged.

post #4197 of 4199

I never built anything like the o2 but I have done some soldering. It really wasn't that difficult and there is tons of information on how to build and test it. If you're confident in your soldering abilities then I say go for it!

post #4198 of 4199
Quote:
Originally Posted by mahaqmi View Post

Thanks for all of the replies and suggestions. Im still not sure to build it or buy it assembled. I need to wait for it next week and in the mean time i will checkout and read the nwavguy's blog for more info. Anyway, i didnt expect building an amp would be the same like building a pc but im trying to cut cost as i have read the assembled is near double the price. Sorry if i make anyone feels uneasy because of my silly questions towards the o2!

 

If you plan to build it yourself, in order to save money only, you are likely better off getting an assembled version.
You are going to save around $50, and this assuming you do not do any mistakes and fry something.
If instead you want to do that because you want to start an electronics DIY hobby, then hack away!
post #4199 of 4199
Quote:
Originally Posted by mahaqmi View Post

Thanks for all of the replies and suggestions. Im still not sure to build it or buy it assembled. I need to wait for it next week and in the mean time i will checkout and read the nwavguy's blog for more info. Anyway, i didnt expect building an amp would be the same like building a pc but im trying to cut cost as i have read the assembled is near double the price. Sorry if i make anyone feels uneasy because of my silly questions towards the o2!

 

Double not-very-much is still not very much! Along with others, I also say that it is a small price to pay to get something that works and avoid the cost of wasting money on something that doesn't.  

 

Quote:
Originally Posted by MrKazador View Post
 

I never built anything like the o2 but I have done some soldering. It really wasn't that difficult and there is tons of information on how to build and test it. If you're confident in your soldering abilities then I say go for it!

 

I can (or could, 20 years ago) solder as in gold, silver, gas torch, red-heat metal, acid baths, and all that stuff. I could do it well too. I cannot do neat electrical soldering. 

 

I'm not saying that I couldn't. I hear people who say it only needs practice, just like brazing/hard soldering. 

 

The last thing I tried was replacing a dead mouse-button switch, It was kill-or-cure on a throw-away item. I made it work, but with problems such as the trace coming away from the board, it was a truly horrible job. Wouldn't like to do that to an amplifier board.

 

The last thing I didn't try was replacing a broken USB cable on a HiFiMeDIY DAC. I stared and soul-searched, but however I looked at it, those solder points were just too close for my known skill level. It's no good doing number 4 properly when 1-3 are ruined. I found a man to whom it was easy and now my DAC works again.

 

There are DIY projects suited for beginners. Even projects that don't involve delicate PCB traces, where solder blobs are the order of the day. One of these days, I'll get that round tuit and learn electrical soldering. I don't think I'll be starting with an 02, though.

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