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bhobba

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About bhobba

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    Seriously DAC Addicted
  • Birthday 11/17/1955

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    QLD
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    Australia
  1. Lenehan Kit Loudspeakers

    Of course - it's how close they get though. I think it will be close than price will indicate - butt we will see. Rawl99 has ML1 Reference and will try that comparison sometime myself with Rawl. His ML1 system uses a heavily upgraded Leak 20, the quality off which Mike will readily attest to (see the amp shootout-out thread from many moons ago). It should prove interesting - the problem is getting the time. Thanks Bill
  2. ML5

    Great to hear. Its not much of a price difference in such a high quality speaker. But before you posted that I penned a very detailed explanation to help you make up your mind. Hopefully you and others will find it educational and interesting. It's really the difference between the base model and Plus R - everyone I spoke to about Mikes speakers before actually knowing the guy - always said - spend a bit extra and get the Plus R - its worth it. Thanks Bill
  3. ML5

    Just to expand on Mikes excellent answer. Mike uses what's called a third order network on the tweeter without going into why he did that or what even a third order network is. For this purpose you can think of it, calling one speaker terminal positive, and the other negative, as a capacitor followed by another capacitor in series on the positive terminal going to one terminal on the tweeter (actually a small network as I will explain later - but forget that for now - simply think of it as connected to a terminal on the tweeter) then the other terminal on the tweeter going to the negative speaker terminal. Where the two capacitors connect you have an inductor going to the negative terminal. Now its well known as much as possible you should try to avoid signals going just through capacitors - they 'harm' the signal worse than any other component. The other two capacitors in the speaker are one on the woofer which has an inductor in the signal path like the capacitors in the tweeter and a capacitor like the inductor in the tweeter - not directly in the signal path going from the inductor to negative. Since its not directly in the signal path it does not do as much harm as the ones on the tweeter. The other is a small capacitor connected in parallel with a resistor to feed the tweeter - this is a small network Mike uses to get the flattest frequency response - because some goes through the resistor it is not as critical as the two where the entire signal goes through them. Experimentation has shown those other two capacitors certainly make a difference, and more than those into this sort of stuff like me and Rawl thought it would, but its not as big as those main two capacitors. Your best bang for the buck improvement is to use the best capacitors you can afford for them. One way to improve a capacitors performance is whats called bypassing - that is in parallel with the capacitor you put a smaller but better quality capacitor. On his other speakers Mike uses Erse capacitors in the base model - good quality capacitor - but not up to either the standard of the Jantzen Superior or of course Duelund - but of course a cheaper. Mike in what he called his plus R used Erse as the base capacitor and bypassed it with Mundorf silver or silver and gold - cant remember which and it made an appreciable difference. I nagged Mike - he is the Duelund guy after all so why use Mundorf - so he switched to Duelund for bypassing the Plus R. Recently Duelund has released a capacitor specifically made for bypassing - the Duelund Silver Bypass (from Humble Homemade Hi Fi): Technical specifications (according to manufacturer): "Precision Speaker Capacitor; Pure Silver Foil; handmade in Denmark". Sound: In one word: amazing! I have used these 0,01uF pure silver foil capacitors as bypass capacitors in many different systems. In just about every case there was an improvement in overall coherency and realism of tone. With realism of tone I mean that acoustic instruments and vocalists seemed much more tangible, more intimate. The Duelund Silver Bypass Capacitor brings out a certain harmonic richness in overtones, for example with brass wind instruments the tone gets a sort of "glow" making them so much more realistic. Big-band music is bright and warm at the same time if you know what I mean, just like in real-life. And now for a cliché: the Duelund Silver Bypass Capacitor really does remove a curtain from the sound, creating more depth, insight and it generally does a very good job in cleaning things up. It does this without getting harsh nor adding artificial emphasis on any part of the spectrum, something that can happen with certain types of bypass caps. They even scared me once: my personal reference system uses a 1-inch beryllium compression driver connected to a tractrix horn that flares out to 29 inches. This "tweeter" has no resistors in the signal-path and is driven by a first order network, so only one capacitor in the direct signal-path. It works like an acoustic magnifying glass. I was fiddeling around as usual, tuning the value of this capacitor in steps of 0,10uF but the sound didn't quite seem to fall into place how I wanted it to. Then I decided to listen if the 0,01uF Duelund Silver Bypass Capacitor could help out here. Bingo! Makiko Hirabayashi's recording "Surely" (that I know very well) has some small bells that are used on several of the tracks. I thought I knew how they sounded but with the bypass capacitor in the network the bells were so realistic, it scared me :-) I am so pleased with these universal bypass capacitors that I have decided to keep them in stock. Verdict: add about 2 points to whatever capacitor you are bypassing. Now they are quite small value and the technical side of Mike was skeptical because being so small you would not expect much signal to go through them so not make much difference. But as an experiment some were got and take my word for it the above is all true - it was tried with a lot of different capacitors - the best overall bang for buck was using it with the Jantzen Superior. I liked it with the much more expensive Jupiter Copper - but it is slightly bloomy - the Jupiter Aluminum was just a smidgen better than the Janzen for but there was hardly anything in it. The only caveat is if you are using really expensive capacitors like Duelund VSF sometimes it produced too much treble detail and depending on your upfront gear in that case you may be better without them. Using them on Duelund VSF copper made a Killer DAC sound worse but a squeezebox sound better. But its a no brainer with the Jantzen superior - it makes a marked difference. I know it's $600 extra but hopefully what I wrote above explains why they are worth it - look on it as going to the Plus R version. Mike for the ML5, which is the best speaker he currently makes, has switched from Erse in the base model to Jantzen Superior. Thanks Bill
  4. ML5

    I would get at least the two capacitors in the direct path bypassed. Thanks Bill
  5. Auralic Aries And Clays DAC's

    It isn't. Its key to the temporal smear MQA tries to address - but it comes at a cost - aliasing components - however they are usually high enough in frequency so many DAC's like Clays naturally attenuate them anyway. Minimum phase up-sampling doesn't care a hoot about temporal smear but greatly reduces aliasing components - its downside is post ringing. Which is better - only listening and time will tell. Of course MQA claims temporal smear is the key - the guy that wrote the link respectfully disagrees. Personally I doubt his claim its audibly indistinguishable from DXD, just as I doubt the claims MQA is better than DXD. However its real purpose is to lift the quality of streaming so that eventually it will be the main game in town for audiophiles. Of course there will always be those that want the very best obtainable. Even I partake of that. I have a collection of SACD and DVD Audio rips passsed through an entropy encoder I also use, but these days my main game is Tidal. Thanks Bill
  6. Auralic Aries And Clays DAC's

    Hi Guys The following sheds some interesting light on whats going on with the Aries and MQA: https://www.computeraudiophile.com/forums/topic/33766-upsampling-mqa-files-to-original-resolution-with-sox-will-sound-like-the-original-resolution/ Basically all the second unfolding of MQA does is try and get an approximation to the 192k, 384k, DXD or whatever was used as source. In doing so it introduces aliasing components etc that may or may not be filtered depending on if the output stage of the DAC does it anyway. For example Clay's Konveter and his upcoming new DAC uses a Jensen transformer as the output - so does the Direct Stream. They filter anything above about 100K anyway so no need to do anything about the ultrasonic aliasing components. But what this guy discovered, and he and I expect Auralic also discovered, is why bother? Simply do some good usual up-sampling like minimum phase SOX. It greatly reduces aliasing but at the cost of post ringing. The thing is unlike pre-ringing which even small amounts sounds bad (you never hear things like that in nature) post ringing is pretty much inaudible because of the natural decay of transients like drums etc in real life. So it looks like that's what they did for the second unfolding - just use a high quality minimal phase normal up-sampler. I have heard both the Auralic and now that PS Audio has released its MQA Bridge 2 that as well. It was not a direct comparison - but from memory it was close. I think we can expect more devices like the Auralic with their own unfolding now this little secret is out, and more choices of what to use with Clay's DAC's. For example it would be interesting to hear how Audirvana sounds - it does the first unfolding then you can upsample it to whatever you like. Thanks Bill
  7. Bridge 2 MQA

    It didnt - looks like everything is OK. Still why you would do MQA at 44.1 24 bits beats me - the literature states using their subtractive dither it equivalent to 23 bits anyway and you get 96k. Thanks Bill
  8. Lenehan Kit Loudspeakers

    Down at Mikes listening to my Bridge MQA and heard it with the crossover fully tweaked. Sounds fantastic. Remember the Proac tablet?. Its about $2200 US. Now its been years since I heard one - but I think these are better - and cheaper. Now Mike can finish my Magnesium's. Enough said. Tanks Bill
  9. ML5

    Duelund Silver Bypass: https://www.hificollective.co.uk/components/duelund-pure-silver-foil-precision-bypass-capacitors.html According to the Humble Hi Fi great capacitor test they add about 2 points. The Jantzen by themselves are about 10.5 - with the bypass about 12.5 - the super capacitors Duelund VSF and Jupiter Copper are rated about 13. That's his view. My view is - VSF just by itself seems best, then, the bypassed Jantzen but it's a bit more than .5 behind - more like 1.5 behind at say 11.5 - the Jantzen - about a 10 rather than 10.5. What should you get - well I have an all out version - Duelund VSF everywhere but at $500 a capacitor and with 6 of them, and having been involved in extensive listening tests I would get as value for money two 10uf Duelund (the ones fully in the signal path) and the other two bypassed Jantzen. But some just want the very best and Mike is building another all out version - VSF copper in every capacitor. I have heard both a version with plain Janzen, and another with all the Janzen bypassed. They both still sound awesome - but bot quite up-to the all-out reference. Mike mentioned he will be building a more basic ML5 and a direct comparison hopefully will soon be possible - I have heard them all at one time or another, but not side by side. Thanks Bill
  10. Bridge 2 MQA

    There probably is in the PS like here in Aus - but this wasn't the PS and they have weaker employment laws than here. Sir Zanders he was not sacked illegally - even here in Aus you can pretty much do what happened to him in the US. I was merely commenting you cant do it in the PS - but the fact you cant do it didn't stop them and basically in the end nothing happened. Laws against this sort of thing aren't worth much in practice. Thanks Bill
  11. Bridge 2 MQA

    Hi Paul Thanks for that. Heading to Mikes tomorrow and will report back with what happens when I try a few things. If that fails then, IMHO, the distributor, Magenta, needs to start earning the money they get from sales - its why they get a cut. Thanks Bill
  12. Bridge 2 MQA

    Yep - he was helping me - great guy. He posted what you said this morning. Whats going on - who knows, - I simply left a note saying you will be missed and wished him the best in the future. Have seen similar things before - even in the Public Service - where its illegal. It happens in private enterprise all the time. The public service case was interesting. Since it was illegal the union took the department concerned to court and of course won - they had to be reinstated and with full pay for the time they were off. Of course guess what - would you want to return to a place that did that - of course not so they didn't return. Nothing happened to the senior management that broke the law - that seems OK - they don't get the sack for being incompetent ninny's - but the underlings can for whatever reason the senior management deems fit. Of course they knew it was illegal, they would loose and the people wouldn't want to come back. That's the public service for you. Honestly I don't know which is worse - the PS or Private Enterprise - they all seem the same. Mind you I don't know if its a good or bad thing - there is really no way of knowing - its just interesting what goes on - that's all. Thanks Bill
  13. Bridge 2 MQA

    Thanks mate. Try Jay-Z 4:44, Lemonade - Beyonce, Bandwagonesque - Benjamin Gibbard and 11:11 - Prism Tats. These are the first 4 that appear in the masters section of Mconnect Control - of those only Bandwagonesque works for me - the rest give 44.1/48 24 bits. What they (meaning PS Audio) want me to check, and it will need to wait until tomorrow when I can get to Mikes is does it say MQA on the front panel of the DS - that seems to be the key. It says it in Mconnnect - but the DS panel is the key. Very interested in what you find. Thanks Bill
  14. Bridge 2 MQA

    My Android only sometimes shows if its MQA or not - the Ipad all the time. The Android did not do it at all Monday. Only something like 20-30% of the ones marked as MQA get decoded. The rest display on the android or Ipad as MQA 44.1/48 24 bits ie its not decoding it. And its reflected in the on the DS display ie it says 44.1/48 24 bits. They want me to check if the DS says MQA which I will do next time I am down at Mikes. I just did a little test at home and connected the Tidal app on my notebook at home to the DS. It worked perfectly - decoding all the ones that would not decode on the bridge. Will take my notebook to Mikes when I go down next and check what the DS says and what my notebook does. If the notebook works and the bridge doesn't - its back to PS Audio to sort out. Thanks Bill
  15. Bridge 2 MQA

    Hi Guys Things not working too well on the MQA front. But I must say this - the PS Audio guys respond very quickly to issues and I feel it will be sorted out. Despite the problems today one thing we did notice. We were using some really transparent speakers and with 44.1/16 Tidal it was a bit ordinary - not bad - just ordinary. But the MQA version was better - at least to my ears. Yet on the much lesser speakers last Friday it sounded better - who knows. However until everything is working properly we really cant say anything certain - so I guess patience grasshopper. Thanks Bill
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