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Just finished my first cmoy...

post #1 of 7
11/1/11 at 4:10pm
Thread Starter 

I was planning on (and still am going to) getting a BSG cmoy for work when I order my DT-770 headphones, but I got offered a Banzai kit from a guy on overclock.net for $15 shipped, so I figured why not.

 

I took the kit, but decided I wanted to do it as a dedicated desktop amp. I built the circuit almost to the instructions except I replaced the two 9V batteries with a 12V regulated DC power supply and jack. I also bridged the capacitors with 4.7 kOhm resistors for the virtual ground as specified in a few other tutorials. Also, I found the LED way too bright to always have sitting at my desk, so I just didn't drill a hole for it and it just stays inside the case.

 

Anyway, here's a few pictures. It looks messy all around, but functions flawlessly, which is all I was really going for on this first iteration.

 

cmoy1.JPG

 

cmoy2.JPG

 

cmoy3.JPG

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post #2 of 7
11/2/11 at 2:21pm

Great! What op amp does it use? 

 

I want my RX2 back. :^)

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post #3 of 7
11/2/11 at 5:41pm
Thread Starter 
Quote:
Originally Posted by jamato8 View Post

Great! What op amp does it use? 

 

I want my RX2 back. :^)

 

It's a JRC 4556AD.

 

Definitely doesn't sound bad, but will probably try out some others at some point. Any suggestions for a 12V source?
 

 

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post #4 of 7
11/9/11 at 11:34pm

wow sweet, this came as a kit? Looks like fun to build.


Edited by Audie - 11/9/11 at 11:38pm
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post #5 of 7
11/10/11 at 8:12am

Nice! I like cmoy and looking to roll some op amp too.

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post #6 of 7
11/11/11 at 11:16am
Thread Starter 



 

Quote:
Originally Posted by Audie View Post

wow sweet, this came as a kit? Looks like fun to build.



Yea, it was a fun little build. I didn't put much care into it (other than soldering), so it doesn't look very professional. My next one will feature much better craftsmanship and contain higher quality components...I just wanted to build a cheap one to make sure that I would get use out of it (which I do...listen to it at work through my DT-770 Pro/250 headphones for at least half of every work day).

 

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post #7 of 7
12/6/11 at 5:19pm

 

 

Quote:
Quote:
Originally Posted by Audie View Post

wow sweet, this came as a kit? Looks like fun to build.



Yea, it was a fun little build. I didn't put much care into it (other than soldering), so it doesn't look very professional. My next one will feature much better craftsmanship and contain higher quality components...I just wanted to build a cheap one to make sure that I would get use out of it (which I do...listen to it at work through my DT-770 Pro/250 headphones for at least half of every work day).

 

 

That's cool that you built it yourself and are getting some good use out of it. My first cmoy was built for me by a user here called Zigis. I think if I'd know how to solder 4 or 5 years ago I would have had a lot more fun with it : )

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