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jeromelang

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About jeromelang

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  1. Use banana, jack. Less stress on the contact points. Less stress on the cables themselves. Less stress on sound. More relaxed. Easy way to relieve stress. Laid out. Plug in. Unplug and let cable fall to ground. Pick up and plug in again. Only do this when the whole system is already powered down for 48 hours (for charge storage to be fully dissipated) and to avoid your hands passing static charge to the cables' dielectric.
  2. Zoomed in image. I hate to see the sight of ferrite cores!
  3. managed to dig out opened top image of R-N602 from a Melbourne retailor
  4. Looks like for the 602, chassis leakage is a common issue. If it bothers you, trying sending it in for checks?
  5. I believe the 602 was "reworked" by their service staff to remove the entire original ac powercord and replace it with one fitted with an aussie ac plug. The reason for reworking is mostly due to sales qty. For Japanese brands, there is usually a minimum qty required by their factory to justify creating a version (mostly adapted from an UK or EU version) just for the australian/nz market. There should be no doubts their service staff (or maybe service contractors) are diligent enough to ensure the correct safety standards are adhered to (live and neutral orientation properly observed). But, still it could be prudent to check. Because as mentioned before, the wrong ac polarity will result in higher chassis current leakage. The other issue is finding what may introduce extraneous chassis leakage current onto the 602. Besides the stax, what else are connected to the 602? If all are removed, then does the 602 still exhibit chassis leakage? Can you find out one by one which component/cabling is the culprit? There is no need to employ another wire between the stax and the 602. You just need to ground the 602 alone. I have previously posted a simple method to ground Yamaha products with just a mono RCA cable with one end's ground shield wire connected to the earth pin of a 3-pin plug. Done correctly it can even improve sound quality. Search the archive. Remember to remove both the live and neutral pins. An "empty" ac plug with both live and neutral pins still on the plug will cause sonic problems. The correct directionality of the rca wire to be used for grounding should be determined first before reworking on it, as it will affect sound quality very drastically.
  6. Does the R-N602 come with a factory molded ac plug or does it look like an adaptor encased over another plug? Show a photo?
  7. This unit, sold in Australia might come with a 3-pin aussie ac plug, but it is anything but grounded. Just look at the thin, captive powercord. There's only 2 conductor wires running within the thin dielectric outer jacket.
  8. Borrow the sut device that you are eyeing and place it at the space you intend to put it in upon purchase. Dun plug it in the power grid. Dun change your cable wiring. Just place the sut physically there and listen to your system. Does it affect the soundstaging size in anyway when the chunky piece of ferrous object is inserted into the proximity of the existing audio equipment?
  9. Let me rephrase the question again. But can one "see" the difference? There are those who can "see" and and there are those who cannot. The trick is learning how to "see" into the music, rather than just "hearing" it. In the course of my work, I've come across many people who can only "hear", and they have not been educated how to "see" into the music. That's what separate the grain from the chaff. Read the way they describe their sonic experiences, you can probably guess who those "hearers" are...
  10. The second time when i encountered this issue, I had already changed my job, and was flying around the world making demonstration to distributors with a myriad of audio only and av products. The company's chief engineer had come along me on this particular event. I assisted in the setup as a matter of course, and he was quite generously dropping a bit of hints here and there. First he showed me how to measure chassis leakage current while swapping ac polarity. So I asked him - how could ordinary users check if they don't happen to make a multi-meter on hand? As he explained that day - first remove all wiring connection to the equipment being checked. With the ac plug connected in one direction, feel the front panel of the metallic chassis with the back of 1 finger. Normally one can feel a small, but perceptible vibrational buzz on the back of the finger as the finger slide across the metallic surface. Next, reverse the ac polarity and test again. 1 orientation will produce less vibrational buzz compared to the other orientation. The one with the less vibration buzz is the correct ac polarity. This correspond to the same test using a multi-meter. The one orientation that yield less chassis leakage voltage readout is also the correct polarity. But can one hear the difference? Yes!
  11. I first heard about this ac polarity debacle way back in 1996. back then I was managing a retail store selling pro audio equipments - mixers, compressors, ADAT machines, studio monitors, keyboards, workstations, and so on. An engineer type person came in one day to pick up a processor box or something. He tooked a look at the 2-prong ac plug on the captive ac cord, and said something like: "...oh well, i guess i'll just have to check it then..." I asked him check what, and that was when he told me all about the ac polarity thingy. I went home and checked it on my Alessis Matica 900 power amp, and sure enough there was audible sonic changes when I tried it both ways. The amp came supplied with a captive powercord terminated with a 2-pin European round body plug. I could get it right/wrong either way. Looking back, I think I must have chosen to use the wrong direction - because from then on, the sound image became very upfront, very in-my-face, the whole soundstage was always in front of the NS-1000M speakers (which was how I preferred it at the time).
  12. Yes, why? Anyone has answers? What's your subject experiences?
  13. No tilt. Tilting changes frequency characteristics. Avoid metal.
  14. I dun have and never thought there was a CD.....
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