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Everything posted by rdale

  1. I’ve wanted to hear these Canadian open baffle speakers for a while, and they would probably partner well with a 300b amp: http://www.caintuckaudio.com/
  2. I’m not sure why you would use the 600 volt version for speaker cable. I use the ordinary DCA16GA for my speaker cables, and there is a new dual core version of that and the DCA12GA that would be tidier.
  3. I don’t see why you would need to leave 10 to 15% of a drive vacant. The default reserved block percentage for the Linux ext4 file system is 5% and that is probably wasteful for a disk used for music storage. With music you are mostly writing the data once and then reading it many times without updating it. In this scenario disk fragmentation shouldn’t be an issue.
  4. I would say that it makes more sense to use a pair of active subwoofers with a pair of active stand mounts to get a full range sound, than it does to have everything in a single big active floor standing box.
  5. I finally got round to doing this and damped the bass horn with Xtreme Dynamat. Here is a horn treated and ready to go back inside the speaker: The Dynamat was easy to work with and after applying the damping the horn is pretty dead. I didn't even need to remove the Klipschs from their stands, and so for an hour and a half's work and about 30 pounds I think I've got a worthwhile improvement in sound. I need to listen for another week or two to decide exactly what has changed.
  6. Fair enough. I personally have found my Stack Link and Allo USB Signature a significant step up from the Pi3s I’d been using before. I haven’t tried a Pi4 for audio, although I’m using one as a NAS and maybe they sound better than the Pi2/3 does.
  7. I’ve got an EAT E-Glo Petit which I’m really pleased with. It sounds great and has loads of adjustments you can make for both MM and MC cartridges. It has a very quiet jfet input stage and uses a couple of valves in the output buffer stage. I also upgraded the PSU to an MCRU linear one. Even with the uprated PSU it is well under 2000 pounds.
  8. My understanding was that you tried to replace the buggy and unsupported version of Volumio on the Stack Link with MoOde and didn’t succeed. Upgrading the eMMC memory in a compute module is a bit more involved than just copying an image onto an SD card. Once I personally managed to upgrade to MoOde I was really happy with the Link, but I may well be the only person who has done it.
  9. I use MoOde with a Stack Audio Link which has a Pi compute module and some fancy PSU circuitry, and the Pro-Ject streamer has a similar design. So you can get the advantage of using the excellent Pi software in more upmarket designs.
  10. rdale

    Foam tiles

    I think the original tiles are pretty ugly, and you have quite an attractive room. On a recent thread lostwin post a link to some grey panels which were 126 pounds for four. To me they look as though they might go with your room: The Martin Logans are dipole radiators and so you might be right about putting the panels behind them. The only way to know for sure is to try different positions out and see what the options sound like.
  11. rdale

    Foam tiles

    The best place to start would be at the sides - the first reflection points. Look up on the web how to use a mirror to find those. If you are just trying to damp a bright room, then the ceiling might be the best place. I had some ceiling panels installed in my large living room, and it was the turning point when the system went from sounding like a disco to something recognisable as HiFi sound.
  12. rdale

    Foam tiles

    GIK panels are more expensive than the foam ones you linked to, but they have a wide range of wooden front panel patterns and fabric colors that should be more domestically acceptable. The eBay foam ones were only an inch thick and you might find they lose the treble while still leaving a bright upper midrange and lower treble.
  13. To me ‘expectation bias’ has a bit more standing than ‘placebo effect’, but who is to say under what circumstances it happens? I have been surprised to hear a difference in my system after a change about the same number of times I’ve been surprised to *not* hear a difference. Or things got worse when I was expecting them to get better and vice versa. I find magazine reviews and forum opinions very useful data points, filtered by my own preferences as to which people have similar tastes to mine. That is not ‘bias’, it is about becoming better informed.
  14. I certainly agree with the above. But it doesn’t make an argument for the term ‘placebo effect’ in the context of an audio discussion, being anything other than a rhetorical device to give a pseudo scientific sounding veneer to a certain viewpoint. When does the placebo effect stop, and when is it ok to say that us feeble humans can indeed determine audible differences between components in an audio system? If we aren’t supposed to reliably hear the difference between mains cables, maybe we’re imagining all the audio differences we hear, even between say loudspeakers. In the
  15. Pasting a link in itself doesn’t make a point, and so whatever point you thought you were making by doing that, wasn’t ‘obvious’. I searched for the string ‘placebo’ in the linked article and couldn’t find any matches.
  16. Congratulations on being able to paste web links, but without any sort of qualifying comment you aren’t making any sort of point. What does the above article have to say about how experienced listeners always and unavoidably deceive themselves when making listening comparisons, as implied by people who throw around the term ‘placebo effect’ with abandon in these sort of discussions?
  17. There is no audio equivalent of taking a fake pill which you believe will make you better, actually having a measurable effect in making you better. When used in an audio context it is just a cheap put down, and equivalent to saying that even experienced listeners imagine there are differences which don’t exist because they always expect them to exist.
  18. The so called ‘placebo effect’ in an audio listening context has no connection with the observed medical effect of the same name that you describe.
  19. rdale

    Acoustic Panels

    I find diffusers at the front improve resolution and imaging, and slightly brighter and more dynamic. But you can put them on the back wall too, or maybe on the sides if the panels are absorbing too much.
  20. rdale

    Acoustic Panels

    The panels look good value but they are only absorbers. I would balance that out with some diffusers, particularly if you can position them centre front. I use Vicoustic DC2 Multifusers which aren’t too expensive at about 400 euros for six, but I think there are similar expanded polystyrene diffusers that go for less.
  21. I own a couple of Chord DACs which Rob Watts designed, and they sound great. As far as I’m concerned there is plenty of evidence that he knows exactly what he is doing.
  22. Of course you demanding that we watch the above video is not ‘arguing from authority’, unlike other people suggesting that we watch a Rob Watts video which apparently *is* ‘arguing from authority’.
  23. You don’t think Rob Watts understands sampling theory? Some chutzpah!
  24. The great thing about Hi Res audio is that it already exists and you can form an opinion about what it sounds like by listening to it yourself. There is no reason why Hi Res should cost more than CD quality music to buy or store, and I fail to see why Hi Res is an ‘oddity’. What would seem odd to me is sticking to a 40 year old format when the technical restrictions on bit depth and sampling rate no longer exist.
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