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vivianbl

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About vivianbl

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    Yellingbo
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  1. Oh dear, I’m obviously in the dark about all this! [emoji15]
  2. I attended two days and enjoyed the show and the talks. Also attended the show the previous week! I too wondered about two shows being organised so close together. Many good rooms and went back to several of them.
  3. Ha ha, I was in disbelief too. I held back from saying that maybe the problem could have been the design of the CD player?[emoji33] Think they were relieved to go back to Dino on the turntable. I had chosen the CDs carefully and had listened to them the night before! I knew the musical elements that drew me to the performance . Hence my disappointment in the reproduction in both musical and Hifi elements. And when I listened to them when I returned home I knew the CD didn’t need bevelling [emoji2]🤣!!
  4. Went to the Show on Friday, the first one in many years, and had an enjoyable long afternoon session. Had a coffee and chat with a member from Brisbane before I started the room tour. We shared the same view about wanting the involvement/ engagement and emotion from the music we listen to. He was lamenting that only one or two systems in the show impacted on him that way. Went on my tour. Enjoyed the imaging and detail of the big SGR system set up. The reproduction of the stage ambience and tension in the music when they played an excerpt from Les Miserables was astounding. The system in Bill McLean’s room with D&D speakers were also impressive- it was well balanced and drew you to the music. I preferred those to the Devore 93 speakers system that he swapped too. Maybe the room acoustics were not in sync for those. The other set up I enjoyed was the Kii system in the sonic purity room. Again preferred that to the more expensive set up in their room! It seemed like the high (expensive) end systems were very smooth, relaxed and clean, but the energy and life of the music seemed to be cleaned away(muted) as well. Some of these systems would have been well over half a million dollars. I wondered whether it was the source music they had chosen, unsuitable room acoustics or just the nature of the current high end audio trend. Maybe it was my expectations that were not in sync! Or maybe it was that Dean Martin had made huge comeback! I do have the original 1960s Lp. Must resurrect it and listen to it again[emoji2]. I had brought along several ordinary CDs (not audiophile ones) to test out with the different systems, but only managed two of these in two rooms. It looked like demonstrators were using vinyl or “ computer” stored streamed music. I was fortunate enough to have one CD played on a system that was close to a $million I think. Dean Martin was on continuous play in their turntable. Brought up the courage to ask them if they had a CD player and could they play one of mine! Well, I was embarrassed [emoji15]. I found it difficult to recognise the track. It was clean, but constricted, emaciated and “thin”. I was relieved when it ended. They explained that the result was caused by the reflections caused by the edge of the CD causing jitter etc. etc..... that bevelling the edges would open it up and smooth out the high frequencies. They kindly offered to do that for me and return. They also have a CD beveller, on the market. Got a chance to use one of my CDs in another room with Martin Logan’s. Not wanting to be embarrassed again I used another CD. .... Something must be wrong with my CDs☹️...... This one didn’t sound good either! Clean, lean and smooth. No energy, life or soul. Went out to have a coffee and Quickly looked up CD bevellers. One available from Sydney Hi fi store for $1490. Thought about it all the way home[emoji6]. Decided to test the two CDs back on my own system.... just to make sure ...before I ordered a beveller. ....What the?......[emoji15]......
  5. Sold quick. Didn’t think they would last long at that price!
  6. I’m listening to the same amps right now with modernised QUAD ESL 57s. They also have the 300B Shugang Black Treasures. Superb [emoji2]
  7. vivianbl

    The Myth of Leak Amplifiers

    Photos of: Original Leak Point One Stereo Leak Stereo 20 Power amplifier Leak Stereo 20 amplifier and Point One pre-amplifier on rack with Quad 11s and Quad ESL 57s (on high end Stands!) Leak Stereo 20 amplifier and Point One pre-amplifier Passive Pre contained within Leak Varislope 11 case with dual channel Dave Slagle autoformers and switch mechanism. WBT Nextgen RCA sockets on rear of passive pre.
  8. vivianbl

    The Myth of Leak Amplifiers

    I have two Leak Stereo 20s (10wpc)that were being used in my main listening system with modernised Quad ESL 57s with passive pre and original 57s with a leak Point One stereo in my study. The Leaks are not modded apart from having a mains power switch put on with one and having an IEC put on. Some Capacitors and resistors were replaced over time. I had tried both solid state and more modern valve amps up to 80wpc and preferred the SQ of the Leak amp especially with the passive pre. I am currently using a SE mono blocks in my main listening Room. I had no problems with volume or bass with the Leaks particularly with the passive pre, using a wide range of music. Very musical, It has PRAT and superb depth of imaging/ sound stage especially when speaker placement and room treatments were synchronised. Maybe I’ll put up some photos later- when I get back to the computer[emoji2]
  9. vivianbl

    Vintage Sonab / Carlsson Speakers

    Wow didn’t realise that Sonabs were still in circulation. They were my first entry into the “Hi Fi world”. I still have the Sonab OA 12 speakers, P 4000 amplifier, C500 cassette deck. Cannot remember if I had the turntable at one stage, but know that I used the AR turntable with the Sonab system. Sounded really good at the time. I have them in storage. Have not used them for decades now, so not sure if they are still operational! I was keen on the biggest of the Sonab speakers 22 or something like that, but they were out of my financial scope at the time.
  10. vivianbl

    Power cord discussions

    1. It’s important to not make judgements based on little information or assumptions. I have a long professional background in research and evaluation so I do understand a range of research methods and their strengths and weakness. [emoji6] 2. Once again you start with an assumption about my interest or otherwise of DBT!! It’s because of my understanding of DBT strengths and weaknesses that I posed the question about how you control the variables in the audio area to set up a “gold standard “ DBT. I don’t think “measurement” is “easy”, unless you measure what can be currently measured. You also need to measure what people are hearing/ experiencing from the output device. If people are hearing a difference or not between two cables (or any other item for that matter), the question to ask is why? What is causing that? What explains that? Is it the measured electrical properties of the cable? Is it the test situation itself that influences what we listen to. Are you a believer or non- believer coming into the test? Everyone knows Listening is not a passive process- just the wave frequency entering the ears. It is an active process influenced by numerous factors. Many of these these need to be taken into account in setting up a “gold standard” DBT. I agree with you, however,that we have to be very careful not to be taken in (blindly [emoji6]) by manufacturers claims and their explanations for the claims and spending $ in the wrong place. Everyone has to make cost value and opportunity cost judgements even if they hear a difference in SQ. 3. Anecdotes can be used as data. They could also be used to ask the question “why is it so?” What data can we used to explain the phenomenon? [emoji2]
  11. vivianbl

    Power cord discussions

    Might be sidetracking here, but reading through all the posts/ and other threads on power cables, the issue of double blind tests as the gold standard for decisive conclusions is constantly put out. Just wondering why in the audio field we have such blind faith in blind tests? The brain plays such an active role in listening and what we hear, or think we hear, that the blind test situation itself may impact on what we hear. I know that when I took part in blind test situations with others, that I / brain automatically focussed on particular markers in the music and I was consistently searching for differences in those markers. But that’s not how I listen listen to music normally. In most cases it was very difficult to recognise any difference. Sometimes I could hear differences, but then found it difficult to determine which item was better in that type of situation. How do we in audio control all the variables?
  12. Great thread. No problem with issue being contentious or not. Helps next level of understanding and helpful in going into any trial of mains power modifiers with ears open! I agree with most of what Zaphod has already outlined in his dissertations, but earlier in the year decided to explore the regeneration option as I was having quite a variation in SQ through the day. Our place was at the end of a SWER line and the 1 phase transformer was on a pole near the house. Btw, I have two seperate circuits for the audio. I managed to get a used Ps Audio P10 regenerator a few months ago at a good price and put the sources - tuner, CD, turntable and found an improvement in the clarity and definition of the replay. I use a valve phono stage. Later I connected the valve Mono blocks. I was very pleased with the result- deeper bass and expansion of the sound stage and imaging. Had it on the carpet floor first. The impact improved considerably with isolation under the unit- used a $ 109 Auralex platform on a high end state of the art rack- an Ikea Lack table![emoji2] Also found an improvement when I replaced the standard power cord with a “better” one (better connectors any way) that I had. This was repeatable. I can’t figure out why there is a difference, because the regenerator is supposed to construct a new AC sine wave- so should be “independent” of the incoming power. I also powered my ESLs early on in the piece, but found the negatives outweighed the positives and put the ESLs back on the wall plugs! Might try again in time and assess. I still find there is a variation through the day but not as significant as previously. It appears that the incoming mains power ranges from 225v to 245v during the day. I have set the regenerator at 235v but is delivering about 231v. By the way, I had to re-adjust / “voice” some of my room “treatments” as well - placed some $6 polyester batts on the wall behind the speakers! My recommendation as many others have stated would be to get something on a trial basis. My experience of using the regenerator has been positive. If it works for you then the judgement on the cost effectiveness/ music enjoyment value will also need to made! Cheers
  13. I use a VTL Ultimate Preamplifier in my system and have a copy of a schematic that a tech used as a guide to do a repair for me. He said it was not the circuit diagram, but worked around it. Happy to send it to you, if you think it might be helpful. I did have a super deluxe years ago- last century! Will rummage through my files to see if I still have any paperwork on that!
  14. I don’t have a Naim Nait, but have other Naims using a remote. I replaced batteries on a non functional one and still no response. Used another set of batteries thinking that the ones I put in were duds! Later found out that the 2nd battery needed to be inserted in reverse position to the first one Should have taken closer look at the polarities in the remote. Naim does things differently [emoji6]. Worked fine after that [emoji2] On the other hand you may have a dud remote☹️
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