Recent content by yzriver
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My DIY Fullrange Speakers
Can these speakers with FE126/127 be used as near field listening, for example, on a desk? The sound of a pair of monitors is a little boring for me, compared to my Paradigm speakers, so I would like to try the sound rendered by some music speakers.- yzriver
- Post #5
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
I finished my case prototype of the SOHA-DAC combo. I know the cutting and wiring is shameful, but they are work well now. Next step is to find some good board and redo the wire. There are two LED that indicate the source is coaxial-DAC or RCA line in. Now source is DAC. On the top the...- yzriver
- Post #1,109
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
I had a similiar problem as regal has. The LM337 back matal is Vin pin, and the heatsink is to ground from its leg. You need a sleeve to isolate the screw/net to the heatsink. Try the LM337 without heatsink first.- yzriver
- Post #1,090
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Quote: Originally Posted by rds That is possible I guess. But if an "amp" has unity gain then technically it's not an "amp", but a buffer instead. My understanding is that a pre-amp attenuates the signal before it is fed to an amplifier. Hopefully someone more knowledgeable will answer...- yzriver
- Post #1,064
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Quote: Originally Posted by rds You can of course, but do you want a pre-amp with a gain of 10+? My understanding is that pre-amps are usually unity gain. The power amp is unit gain, and preamp has some gain. Am I wrong?- yzriver
- Post #1,062
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Ask this question again. If it works, I can save money for a preamp and space. Can I use SOHA as a preamp? I have a Adcom GFA-5300 power amplifier, of which input impedance 47KOhm, sensitivity 0.1V for 1W and 0.9V for 80W. Thanks.- yzriver
- Post #1,059
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Can I use SOHA as a preamp? I have a Adcom GFA-5300 power amplifier, of which input impedance 47KOhm, sensitivity 0.1V for 1W and 0.9V for 80W. Thanks.- yzriver
- Post #1,051
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
JamesL It maynot relate to your problem, I just want to let you know you need to be awared of the connector for headphone. You soldered the screwconnector pin to the center 3 hole, of which lable is L,G, R, but the headphone from tips to sleeve are left/right and grond. I maynot explain well...- yzriver
- Post #1,038
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
I am building a SOHAII. It started to sing at last weekend, with a very clean, warm, very detailed sounds. The tubes are RCA 12AU7. The tested voltage: TB+ 92.2 TB+L 75.2, TPL 56.3 TB+R 74.9, TPR 56.4 The audio source is a DAC board, which works with DIR9001 and PCM1793. It uses a 1875 to...- yzriver
- Post #1,031
- Forum: DIY (Do-It-Yourself) Discussions
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Gamma-2 (γ2) DAC Thread
allright, how about make a gamma 3.- yzriver
- Post #502
- Forum: DIY (Do-It-Yourself) Discussions
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Gamma-2 (γ2) DAC Thread
For me, I like the gamma 2 integrating receiver and DAC in one board, but it would better to have seperated buffer stage or interconnection to outboard buffer.- yzriver
- Post #500
- Forum: DIY (Do-It-Yourself) Discussions
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Gamma-2 (γ2) DAC Thread
how gamma 2 compares to twistpearaudio's DAC? Is it reasonable to have two differential output from gamma 2? thanks- yzriver
- Post #480
- Forum: DIY (Do-It-Yourself) Discussions
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Anyone has used SONY CDP-610ES
I got a SONY CDP-610 from a local yard sale, by $20. This machine was built like a rock, weighting about 20lbs. It was made at 1983. I guess at that time a CD player is a high end machine, so the componets inside are very awesome. I am not a audiophiler, so I can't describe how good it sounds...- yzriver
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- Replies: 0
- Forum: Dedicated Source Components
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SOHA II Builders Thread
thanks runeight. Does a 2x18V transformer work for SOHA II?- yzriver
- Post #979
- Forum: DIY (Do-It-Yourself) Discussions
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SOHA II Builders Thread
Is it possible to use SOHA II as a power amplifier to a pair of speakers, for example, those sensitive fostex full spectrum speakers. It looks the SOHA II has a few watt output capabilities.- yzriver
- Post #977
- Forum: DIY (Do-It-Yourself) Discussions