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  1. J.Y.

    Creative Labs Aurvana 3 Dual Driver IEM Giveaways & Discounts - A new favorite of ours!

    I've owned a good number of Creative products, coming from Soundblaster 16 cards in ISA, the original 64MB Nomad Mg, Zen Xtra, and eventually the fabulous E-MU cards.
  2. J.Y.

    Chinese $10 USB Audio Controller Review (I'm serious)

    I declare that the usbgeek audio dongle is as terrible as computer audio gets, which gives me constant hiss on the playback, and worse yet, the mic input is totally useless. I used this w/ skype and the person I talked to reported that he cannot hear me talking behind the huge hiss. This is a...
  3. J.Y.

    Interconnect Termination

    Assuming that the input impedance of an inverted amp is viewed the same way as a non-inverted amp, which probably is. Unless I purposefully set the Zi on the amp to some really low value so that it affects the total impedance, the general Zi seen by the source wouldn't be much affected. It...
  4. J.Y.

    Interconnect Termination

    I just had to dig this thread up; does the final parallel resistor form a high pass filter when used with a source that has a relatively small output capacitor? It sort of makes sense to me that the prosinked cables exist as an load parallel to the resistor setting the input impedance of the...
  5. J.Y.

    Running 1212M on a REALLY old computer

    has anyone tried this with success? I am thinking about dedicating an old 200Mhz desktop to audio playback use, but the EMU website lists a minimum requirement of 500Mhz CPU. I could care less about running any of the bundled software and latency, but I'd suppose the driver doesn't use much CPU...
  6. J.Y.

    $35 Hakko 936 Clone - First Impressions **56k warning**

    To gastro54: Could you tell me where you got those clamps in the 3rd photo?
  7. J.Y.

    FYI: using Sennheiser hd 650 "nude version" , first impression

    I have a feeling that the membrane is there for damping purposes. Increased damping gives the headamp more control on the drivers, and maybe the back grill is there to stop some air too so that there is equivalent damping on both sides of the driver. I would probably try remove both the inside...
  8. J.Y.

    Newbie question : Anyone tired "Coldheat" soldering kits?

    seems excellent for my purposes... I suppose if the temperature would keep on rising with contact, I would be able to do some high temperature soldering.(typ. 700degrees Celsius)
  9. J.Y.

    THAT High-End Balanced Line Receiver

    would it be possible to build this with discrete components?
  10. J.Y.

    US Patent and Trademark Office

    I've gone through George Cardas's patents.. there was quite a bit on his "golden ratio"
  11. J.Y.

    Should I Buffer the Virtual Ground?

    *bump* still looking for the answer
  12. J.Y.

    Should I Buffer the Virtual Ground?

    http://www.gen6991.idv.tw/team21/200...44/index.shtml I am currently building a buffer with six NE5532 in parallel driving one channel using the above circuitry. As I have read on NE5532's data that it sinks 8mA of current, and that a single TLE2426 can provide for 20mA of current. Does it...
  13. J.Y.

    USHER LOUDSPEAKERS

    I owned the lowest line S520 speakers from this manufacturer, and they were descent for their price(equiv. USD$120) Amplification is one thing to keep in mind about Usher speakers; they are harder to drive than they seems. A little modding of internal wiring and replacing of parts on the...
  14. J.Y.

    Amplifier as power source

    I have quite a bit of interest in this setup. Can anyone "simulate" what might happen when the freq generator stops generating sine waves?(in the case of which the computer gets turned off) Another thing that concerns me is the current spike that comes from the soundcard when PC is...
  15. J.Y.

    Making an 'Interconnect A/B Switcher?'

    I've had built units of similar purpose with a simple switch, or relay for this matter. The switch I used was a dual C&K switch, with a total of 6 pins arranged in the geometry of the below: 1 4 2 5 3 6 Where a flip of the switch changes the connection from 1-2 & 4-5 to 2-3 and 5-6. Use...
  16. J.Y.

    Need help debugging meta

    I was trying to fix my roomate's meta42 earlier, but have came down to the conclusion that he has reversed the power polarity in the past, and had 18V DC running through quite a few components. It is currently still all my speculations, if true, is there any way that I could verify this...
  17. J.Y.

    Good transport, bad transport

    Maybe the slight impedance mismatch at the digital output can result in this difference?
  18. J.Y.

    How to cut down on RF/EMI signals?

    tweaks that worked for me in hum-hunting from past experience: 1. Take a piece of wire and try ground the pot to the chasis. 2. Use a cheater plug to isolate the ground. 3. Try taking a piece of wire(heavy gauge works better) and connect the amp and source via screws on the chasis. Somewhat...
  19. J.Y.

    The "sound" of batteries

    I'd prefer the sound coming from Ni-Cd batteries over Ni-Mh's any day. They are quite a bit more dynamic but doesn't "stay fresh" for as long as the other batteries.
  20. J.Y.

    how to make an headamp out of this ?

    deleted Didn't realize that there was a parallel op amp thread.
  21. J.Y.

    What can you tell me about Tara Labs Prism 33 ICs?

    I had a pair of this cable for a few months before I sold it. It has a 7 conductor 8N copper core and a copper braided shield. The shield is connected on both sides and serves as the negative on this ic of typical coaxial design. I found it to suit better in my system than some of the higher...
  22. J.Y.

    My Ultima DB-01 Dual JFET+DB Head-Amp

    Great work!! Impressive layout. Although I know little about the circuit, the transformer and the enclosure always looked amazing to me..
  23. J.Y.

    Why the Mystery?

    Quote: Originally posted by Joe Bloggs Never heard of such a thing Are you confusing this with how these two parameters affect different frequencies differently? I would agree with the saying that capacitance/inductance is frequency dependent, and so is resistance. There is a...
  24. J.Y.

    Why the Mystery?

    In the world of analog, cables do make a difference.(period) (this is not saying digital cables make no difference, but I suppose I can argue that all cables are analog) There are certain changes in sound which we perceive that cannot be measured in FS graphs. Why? This is where cable...
  25. J.Y.

    What CDP does the broadcast industry use?

    I'd say Tascam. I have been scavaging vintage ones since last year. I believe Denon, Studer, Revox, and Marantz all have their studio lines of CD players. Their retail goes from a little over a thousand to several thousand. I believe that quite a few broadcasting companies/studios still use...
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