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γ3 On the Move

gamma3, gamma24 (plug-in for the γ3)

Re: γ3 On the Move

Postby LV26 » March 17th, 2016, 2:36 am

cobretti wrote:Now, On the sound side.
As expected, my Theta CDplayer is obsolete! I was using my y1.5 as DAC and PC as my source. I was expecting some improvement over the y1.5 but :shock: what a difference! The sound is more open, wider and more detailed. I really didn't expect that much improvement. It is just fantastic. I had DAC from Benchmark some time ago, and as far as I remember the Benchmark DAC sound was pretty much the same as Theta CDplayer itself. The gamma3 is 2 levels above that! I am happy camper, at least for now. I just put my Dali Epicon speakers for sale, blaming the poor sound on them. But I think I will actually keep them! Every song I play sound different now. Wow. :o Amazing!

Could you inform, please, what Theta CD player (model name) are you using?
Everything should be made as simple as possible, but not simpler. // Albert Einstein
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Re: γ3 On the Move

Postby cobretti » March 19th, 2016, 9:51 am

It is Theta Miles. Very good CDP 10-15 years ago, one of the best for the money you could buy. I still use it, but only as transport with coaxial output to gamma3. DAC stage is obsolete. It is based on Pioneer stable platter mechanism that was well known for its data reading reliability.
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Re: γ3 On the Move

Postby cobretti » March 19th, 2016, 9:53 am

inside Theta Miles.
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Re: γ3 On the Move

Postby LV26 » March 19th, 2016, 11:49 am

Thanks
Looks like all Theta`s PCB`s from different devices. ;)
Everything should be made as simple as possible, but not simpler. // Albert Einstein
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Re: γ3 On the Move

Postby cobretti » April 22nd, 2016, 3:16 pm

SRC4392 dies. Out of the blue, when playing music, the chip lost sample rate and that was it. It's dead. I have all voltages as should be, master clock running no issues, but SDAOUT, LRCK and BCK nothing there. What a :?: :evil:
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Re: γ3 On the Move

Postby amb » April 22nd, 2016, 3:41 pm

Yeah, sounds like your SRC4392 died. If you don't have one already, it's a good time to buy an inexpensive hot air SMD rework station. See my post about this: gamma3-build-problem-t3218-30.html#p30531
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Re: γ3 On the Move

Postby whomper » April 22nd, 2016, 10:59 pm

Desoldering the SRC with a hot air gun was a breeze for me. In earlier desoldering SMD work I used ChipQuik, but this time it was easier and cleaner.
A good $50 investment :-)
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Re: γ3 On the Move

Postby cobretti » May 1st, 2016, 12:08 pm

Just a little update on some decoupling caps. Through hole 0.1uF TDK replaced with 0.1uF 1206 SMD.
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Re: γ3 On the Move

Postby cobretti » May 1st, 2016, 12:10 pm

more images:
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Re: γ3 On the Move

Postby cobretti » May 1st, 2016, 12:12 pm

and more:
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