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About ghost4man

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  1. ghost4man

    ME850 mods designed by Art Vandelay

    George, How much of a difference to your system was it upgrading the passive XO?
  2. Since you have declared the interest I will provide a photo tonight and then you can see
  3. There is an even better mod whereby you upgrade the power supply on the Oppo 203, add the I2S board AND a better clock than the generic on the main board I hear the argument re USB all the time. However, when you look at it there is a lot in the way of trying to preserve the signal with the addition of an LPS etc. Having spoken to a few electrically type minded guys, its not seen to be the best way to transport a signal for audiophile means anyway. Ultimately you decide with your own ears.
  4. NO. But with an incredibly good mod board made by the gentlemen who is renown for doing mods to Oppo's which I wont mention due to possible conflict with advertising a non sponsor you can turn your Oppo into an even better system. If there is enough interest I can provide photo's. @gonefishing999 got me onto this.
  5. Hi mate, Yes I have. I think the fact that a lot of us will incorporate the SOTM or microrendu etc says a lot about the efforts that are undertaken to make it work. I2S out of the Oppo and in to the Holo is to my mind the perfect route.
  6. Does sound better, actually much better with run in. I go I2S out from Oppo 203 into the DAC and it sounds sublime. I'm not a fan of USB. I would never measure a DAC in performance via this interface. I personally hold the view that it looks quality in appearance and certainly not lightweight which I would associate with cheap Chinese products. My feeling is that it is difficult to beat the Holo in this price category and up.
  7. ghost4man

    How CDs and Downloads Died

    But you are getting something aren't you. You are paying to listen to some thing. Why should the medium by which you achieve this be important. I can understand if streaming delivery was such that it yielded poor results but I struggle to believe that that is the case on a universal level. The opinion piece to my mind is just another expert who seems to think that they know what the tastes of the music listeners will be.
  8. Andy, You raise some interesting possibilities. In answer to 1: Quite possible. These are newish tweeter drivers as you are aware so one could hardly attribute a deficiency in performance due to a physical issue. 2. Not possible. The multiple sets of graphs clearly show that this is not the case. 3. Unlikely although one cant totally exclude this. Its the case that the amplifier did deal with the TR without issue. Dealing with it is one thing. Getting it to excel is another. 4. I agree it could be. Mic positioning is always problematic especially in a non perfect set up.
  9. Mate you just have to be gentle when putting on and taking off. The key here is to not put a time limit on what you are going to do and just take as much time as is necessary. Remove any side strips. The biggest part of the job are the staples at the bottom. What I did here was use a sharp knife and pry under each staple. I did it in such a way to be able to reuse each staple without the need for a more heavy duty stapler usually assigned to furniture work. Take photos so you can mimic how the felt has been folded at the bottom. Where the XO's are is simply a case of unscrewing and sliding through the cut felt. Hope that helps. Ozzie
  10. Yes. Just have to be gentle mate that's all.
  11. In relation to the above the following needs to be stated. The 2 graphs represent a two and three way set up. The graph with the obvious drop off at around 10k is where I have run the original tweeter from 1100 to 20k. To my mind it's a very poor result. The T1Ds are specced to 20k and it certainly achieves that goal but not what I consider the ideal outcome. The other graph is three way and is defined by the TR being introduced at 3k with 48dB slopes. Clearly there is a significant difference between the graphs. If you draw the conclusion that the amplifier is struggling with the load then to my mind you are not correctly interpreting the results especially given the fact that the amplifier is dealing with a less than 3 ohm load when sitting on the TR. If the frequency response was reversed then the argument would conceivably apply. But not with the above. It simply shows that the TR is a far better performer in this range than the existing tweeter. Should we be surprised with the result? Absolutely not. It simply reinforces why Magnepan went down the route of adding the TR.
  12. Scott, All the best mate for the future. Ozzie.
  13. Andy, Just to be clear this was something of first up test to get the ball rolling and see what results would throw up. The whole point was to see if there was much in the way noticeable crests or troughs which I experienced before with lesser amplifiers. In answer to your question I left the HP and LP with the same slope. So for example, when I tested with 12dB LR I kept that consistent across the board. I am well aware of Magnepans recommendations. Magnepan however don't build a system with a DSP unit. Will I test with standard Magnepan metrics? Well yes. However, I will ultimately rely upon what my ears tell me. The bottom end is catered for by a pair of 12 inche Dayton Audio drivers which I cut off at about 80Hz. The two bass panels kick in and go through to 1100Hz where they are cut off. It's at this point I have introduced the tweeter panel which I run to 3000Hz and cut off at this point to bring in the true ribbon which is basically a super tweeter. I am going to experiment with the TR from 2k through to 10k to see what graphs are yielded and more importantly how it sounds. A gradually falling slope is the preferred option but im this case it's not something that I am overly concerned about. My feeling is a 6 dB slope down is a good guide. The drop off at 100 Hz is not something I am happy with. This is the beauty of a DSP unit where you can build your own XO to test. Overall I'm very positive about the performance of the Lexicons. Far superior to the AKSA's. Out of curiosity I am going to run the old tweeter full range. My guess is that it will fall over despite Magnepans assertions. What HP, LP markers would you suggest? I'm open to suggestions. Enjoying the process of testing again.
  14. Bessel. Just to add NO PEQ's or FIR's. Did some basic leveling. Obviously drop out at 100 Hz. This is a minisharc - not minidsp.