New CMOY

Hewie · 20th March 2011, 03:19 AM

Thought I'd report on my latest project. A friend wanted to learn how to solder and read schematics, so I helped him build a CMOY while I built one as an example. It was a fun little build, but I have to admit, there is no improvement sound wise over listening straight out of my computer with my Grado 60s. It was fun though. It is built per Tanget's instructions, currently running no output resistor and a gain of 11.
Dave

sofaspud · 20th March 2011, 03:29 AM

What's the story of the enclosure? Is it DIY also?

Hewie · 20th March 2011, 03:36 AM

Quote:

Originally Posted by sofaspud

What's the story of the enclosure? Is it DIY also?

Yep. Just a piece of teak I had laying around that I routed out. Wish I had a better picture, 'cuz I think it looks pretty good.
Dave

ferynov · 04:36 AM

I do the cmoy project, but use salas shunt reg for powersupply, what opamp do you use Hewie?

more picture

Hewie · 20th March 2011, 06:27 AM

Quote:

Originally Posted by ferynov

what opamp do you use Hewie?

It's a TI OPA2132PA.

Dave

sofaspud · 20th March 2011, 06:53 AM

I agree, it looks pretty good. It's nice when "laying around" turns out like "made to order."
No improvement?? Maybe that's more to your laptop's credit than a knock on your CMOY. For portable players, I think a headamp is essential.

enigmaticEntity. · 21st March 2011, 10:52 AM

? I guess if you use proper headphones, that is true, though I find the ones (3) I have (ear-buds, in-ear and over ear) usually go more than loud enough for me out of a 1.2V player. Do you use something with way more than 32Ohm?

Having said that, I'm not so fussed with headphones, since I prefer loudspeakers, even if they're small for most listening

I love the clean electronics you have there, you do not want to see my lay-out...

20th March 2011, 04:34 AM	#4
ferynov diyAudio Member Join Date: May 2008 Location: Borneo Blog Entries: 3	I do the cmoy project, but use salas shunt reg for powersupply, what opamp do you use Hewie? more picture __________________ -Best Regards- diy blog Last edited by ferynov; 20th March 2011 at 04:36 AM. Reason: wrong code

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20th March 2011, 03:29 AM	#2
sofaspud diyAudio Member Join Date: Nov 2005 Location: San Antonio TX	What's the story of the enclosure? Is it DIY also?

20th March 2011, 06:53 AM	#6
sofaspud diyAudio Member Join Date: Nov 2005 Location: San Antonio TX	I agree, it looks pretty good. It's nice when "laying around" turns out like "made to order." No improvement?? Maybe that's more to your laptop's credit than a knock on your CMOY. For portable players, I think a headamp is essential.

21st March 2011, 10:52 AM	#7
enigmaticEntity. diyAudio Member Join Date: Oct 2009 Location: Tasmania	? I guess if you use proper headphones, that is true, though I find the ones (3) I have (ear-buds, in-ear and over ear) usually go more than loud enough for me out of a 1.2V player. Do you use something with way more than 32Ohm? Having said that, I'm not so fussed with headphones, since I prefer loudspeakers, even if they're small for most listening I love the clean electronics you have there, you do not want to see my lay-out...

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