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jeromelang

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About jeromelang

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  1. They could tell me the changes in imaging size and height with or without the handkerchief over the power cords.
  2. This was a test I did in front of listening newbies. I mean, they were hired as marketing audio systems, but most of them have very rudimentary listening skills - which is not a bad thing - because that meant their listening apparatus were still fresh, and they don't have any pre-conceived prejudice about what they can or cannot biologically hear. The test was: While listening to a piece of music played through a HiFi system consisting a DVD player, an av receiver, and a pair of floor stand speakers, I drop a handkerchief over the power cords. They can hear the difference. Then I remove the handkerchief. They hear the difference too. I tried a piece of velvet over the power cords next. They heard greater differences. Different fabrics materials coming into contact with power cords which have current coursing through them can affect sound! Why?
  3. Does the cj 350 power amp invert absolute polarity? Is it written specifically in the manual?
  4. jeromelang

    How noisy your TT is?

    MM noise MC no noise
  5. It is important to get the signal flow directionality correct for the ground cable - even if it is just being used for grounding purpose.
  6. "Regular" RCA cables that are used commonly with high end audio equipment somehow dont sound as good when used as a "phono" cable from tt to phonostage. I think the issue is their higher capacitance. OTOH, the "phono" RCA cables recommended by tt manufacturers sound better when used between tt and phonostage, but may sound a bit "thinny" when used for "regular" HiFi duties - between a cd player and the pre-amp for instance. The capacitance value of a cable is known to affect frequency response greatly when used with mm cartridges. What is not as well known is that capacitance does matter when used with mc cartridges too.
  7. I had a Sony cdp-xa50es which took 7 days to run in. I had a Sony scd-1 which took 2 months to run in. I had a emm lab xds1 which took 4 months to run in. I am having the dac2x v2 which replaced the original dac2x and it took bloody 6 months for the v2 to start sounding anywhere near the original. I think the moral of the story is - when you are playing at this level, buy 2nd hand so that someone run in for you and you get to enjoy optimum sound straight away...
  8. jeromelang

    Biwire, Jumpers or.....????????

    The short portion of wire between the high and low terminals should not be "straight taut". They should all be "curvy loose" Helps to prevent "vibration" affecting sound.
  9. Some questions that might arise from my "gentle" reply would be: Why can't users correct for absolute polarity inversion by inverting speaker cable plus/minus terminals at both channels of speakers? What are some specific music recordings that help to check/determine if some components within your system is inverting absolute polarity?
  10. I will try to say this as "gently" as possibly to the original thread starter and to anyone else searching for a good sacd player: 😁 Consider the Yamaha sacd player carefully. "Gentle" enough? 😁 So far i have found the 3 yamaha players to be quite quite reliable. And while the absolute polarity can be best solved by modifying the XLR connecters at the source end, you will find that its resale value could be low as more and more people start to realise the sonic problem the inherent design flaw of these players will pose to their prolong listening pleasure through their system if no modification are done to the interconnect cable to their amps. 😂😂😂
  11. I would have thought this is something that is intuitive, that needn't even need to be said, but, since we are dealing with people lacking common sense, and that each time someone wants to comment on any topic he/she should at least tried it out. Well here it goes: - If one hadn't corrected for the absolute polarity inversion, then the listener won't know what he/she had been missing. I'm going to post 3 screen grabs now.... CD-S2000 test measurement 2nd photo is impulse response. Hard to see, but measurement shows inverted absolute polarity CD-S2100 CD-S3000 All 3 players were measured by one of your Australia HiFi magazines and all 3 players showed inverted absolute polarity inversion. It is not easy for an inexperienced listener to know what to listen for when absolute polarity is inverted somewhere in the audio signal chain. But that doesn't mean ignoring it or leaving things as they are. And in the spirit of this thread: for anybody looking for a good sounding sacd player - you will do better leaving the yammies out of your consideration.
  12. Yamaha sacd players invert absolute polarity. That include the CD-S3000, CD-S2100, CD-S2000. I would stay away from all these players if I were you. Lean, lifeless sound. Lacking dynamics, when compared to having the absolute polarity inversion corrected. If your amplifier have balanced XLR inputs you might correct absolute polarity by swapping pin2 and pin3 at source end of your balanced XLR cable (This method best avoid subjecting all downstream electronics and cabling to inverted signal flow directionality - which is another huge can of worms). If your amplifier only have single-ended RCA inputs, you can consider custom making a pair of interconnect cables with balanced XLR terminals at the source end, and RCA terminals at the destination end. Swap pin2 and pin3 at the XLR terminals, and short the negative conductor to ground at the RCA terminals. The other problem with Yamaha player is - their balanced XLR outputs are padded down by 6dB. So if you use the XLR-to-RCA cable method, the sound output into your amp will be attenuated by 6dB, becoming halved in level compared to the original single-end RCA outputs of Yamaha players! This is a right royal mess! What the fcuk their engineers were thinking about when they came up with the design of their entire line of players??!???
  13. Getting the CD-S3000 to match the A-S3000 might turned out to be something you may regret later. The CD-S3000 inverts absolute polarity. In a normal situation, when there is a balanced connection between these 2 components, the absolute polarity of the audio output to the speakers are inverted. The result is lean and lethargic sound with vague imaging and loss of dynamic punch. There are 2 ways to compensate for this problem. 1) inverted the polarity for both speakers at the amplifier output terminal. 2) swap the positions of pin2 and pin3 of the XLR balanced cable at the source end.
  14. jeromelang

    Getting back into vinyl

    Done this test many times for many people. They all can hear the sonic differences with or without the original aluminium platter in close proximity. This test involves using an acrylic platter on the 1xpression carbon classic instead of its original aluminium platter that it was supplied with. The tt motor was operated (turned on/off) at the wall mains, instead of at the power switch of the turntable. (This makes a huge difference in the soundstaging size) In this condition, the projected soundstage is large, soaring well above the height of the speakers, and richly detailed with abundance of ambience cues if they were there in the recordings. The test involved placing the original aluminium platter next to the turntable, on its right side. No contact between the turntable whatsoever with the aluminium platter. The platter was just placed on the side nearest to where the tonearm/cartridge were. What those listeners heard, over the next 5-10 seconds, was the soundstage gradually shrinking in size, until its height was just slightly over the speakers' tweeters. We were witnessing height differences of nearly 1 meter! And as long as the aluminium platters remained there, the soundstage remained closed in, and shrunkened. However, when the aluminium platter were removed away from the turntable, the soundstage immediately regained it original size. The same observation was repeatable again and again. When the acrylic platter got replaced back by the aluminium platter on the turntable, the soundstage was consistently low. We also tried acrylic platter on the turntable and other type of metallic material next to the turntable - a screw driver, a hammer, the motor body (metallic) of another project turntable. Each time each of these metal objects were placed next to the 1xpression, the soundstaging was observed to be shrunkened. It always was gradually shrunkened, over a period of a few seconds. When those metallic objects were removed, the soundstaging when back to its previous sizes immediately. When a project xtension 10 sitting nearby was removed away soundstage grew more spacious even more. (The xtension10 have a thick and heavy metal platter and magnetic suspensions). Metal does not affect soundstaging? So how else can one interpret these observations?
  15. jeromelang

    Getting back into vinyl

    They say the 2M black is highly sensitive to vta changes. While i had setup the 2M black on a few tts before I can't say I've experimented with vta with the black enough to say it is true. I am using the bronze with the rpm9.1x at the moment, and it is riding pretty low from the look of it, but it sounds "right" with most LPs I've played. The 1xpression with 2M series also ride very low, and most especially with 200gm thick vinyl. You can't adjust vta on this TT. I would keep the 2M black on the genie
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