CMOY amp best "Gain" for SR-80
Feb 4, 2003 at 12:57 PM Thread Starter Post #1 of 2

danlaix

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I'm so happy that i successfully built the cmoy amp in one shot.
Unfortunately i can get the OPA2132PA, so i'm using the OPA2134.

The output, well, definately not as detail as my X-Cans. But it has plenty of volume compared to the normal headphone's jack.

I'm running on a 9V batt, and the rest of the components are just the standards from the Tangent site. But when i tried to crank up the volume on the amp for my SR-80, the sound is breaking up, some sort of like to loud until i can hear distortion. Other than that, the sound is clear and clean at a lower volume. One thing also is that there isnt enough bass too.

So, here's my question:
Is it because of the "gain" issue that the standard gain 11 is too high for my SR-80? Anyone knows the best gain value for SR-80? And what R3 resistor would be good?

How do i add more bass to the output of the amp? Is it the OPA?
Also i noticed the sound has too much treble until its too "sharp" to listen to and the midrange is fine, loud and clear, but the bass or lower freq are slightly too low.

So, again, i need professional consultation here, anyone? Cmoy? Tangent?

I will post in the full photo of my amp one i'm done.
Again, thanks Cmoy and Tangent for the good instructions on the web.
 

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