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About BB1

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  • Digital Source 1
    Linn KSH
  • DAC
    Linn KEB/1s
  • Power Amp/s
    2x A4200s, 2x A2200s
  • My Speakers
    Linn Misos
  • Trade Status
    I am not in the Hi-Fi trade

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  1. A large part of the Davaar firmware is identical for all devices, but there is small part which is device specific. The identical part takes care of tasks which are independent from the underlying hardware or use the same hardware for the task. The device specific part takes care of specific hardware only present in some devices. The Davaar 4.75.360 release notes give good examples for both parts. This issue was independent from the underlying hardware, since the communication between the control point and the device is handled by a generic firmware layer independent of the hardware. If the control point requests to lower the volume although it is already set to zero, the generic firmware layer should not signal the hardware to change the volume from 0 to 80 (or any maximum volume the DS is configured for). This issue has been definitely caused by a device specific part of Davaar. Obviously the issue akamatsu is faced with is device specific and most likely also depends on the other Exakt devices he uses. It also could depend on a non-standard setting he had chosen for his DS. To sum it up, the fact that Davaar 75 works completely fine in one system doesn’t mean that it works fine in all systems.
  2. No, most likely it isn't. I'm using Davaar 4.75.360 as well and don’t see this issue at the moment. IMHO Clavius hit the nail on the head with his initial post in this thread. Obviously it isn't...
  3. Given my own experience I’d say that an AEB6 with Akurate amps is much better than an AEB-I, although my experience is based on pre-Katalyst devices. My first Linn-only system consisted of an MDSM, an MEB-I and Misos. My longer term upgrade goal at that time was an AEB10. My first step was adding one 4200 (at the beginning of one of Linn’s "2 extra channels free" promotions). Very soon I’ve realised that mixing Majik and Akurate level amplification isn’t a real good idea in general and hence I’ve bought another A4200 at the end of the very same promotion, but this isn’t of much relevance here. Replacing the MEB-I later on by an AEB10 was another big step ahead in terms of SQ. Even at the time of owning only one A4200 I’ve noticed that the MEB-I’s SQ greatly benefits from external amplification. The A4200 was driving the mid-range and the tweeter and the MEB-I sounded noticeable better if my MDSM was used for driving the bass instead of the MEB-I. As you already own an M5100 it IMHO makes no sense to go for an AEB-I. With respect to pre-Katalyst devices, an AEB6 with external Majik level amplification is much better than an MEB-I and I don’t think that Katalyst did change much in this regard.
  4. Thanks for reporting back and sharing your observation. Please keep us posted about the solution the HelpLine will hopefully provide soon. I now would bet that it will be a firmware bugfix…
  5. Two things come to my mind immediately: 1) The additional connector is meant for simplifying in-house testing, e.g. measuring the output voltage of the power supply. 2) Linn’s intention was to test the sonic impact of the supply connector position in use prior to release. If so, they decided that using the "lower" supply connecter sounds better.
  6. The CE mark (type approval) is self testified, i.e. the manufacturer can claim that its device complies to the CE rules without any confirmation of a notified body. If I’m not mistaken, one requirement of CE is that there is a user manual available in all official languages spoken in the country the device gets sold. If browsing LinnDocs for Akubariks, this requirement doesn’t seem to be fulfilled. „Must be installed by a Linn retailer“ might be a legal way to circumvent this requirement.
  7. This is only true for incremental software updates usually used for large operating systems. A firmware update like Davaar deletes the whole content of the flash memory and then replaces it with the current version. The only settings preserved during a Davaar update are the user settings. Hence it is important to apply the same user settings after reverting to factory defaults prior to any comparison. IMHO a DSM sounds slightly better if its HDMI module is disabled (that’s why this user setting is available in Konfig), but after reverting to the factory defaults the HDMI module is enabled…
  8. Please enlighten me why do you think that an issue with ancient MacOS versions prior to X (released in 2001…) does apply to DS firmware as well. Since I’m quite sure that only very few people know what a "bundle bit" is, I’d like to mention that it’s just a MacOS specific file attribute stored in the file system as e.g. read-only is.
  9. Electrical safety regulations (as well as EMC) are irrelevant here. Since we’re talking about a passive speaker, it can’t cause more electric hazards that the amp its being driven from, unless the perpetual mobile gets invented. Linn’s reason for saying no was they can’t test whether it works correctly or not… There’s also a mechanical risk appraisal, i.e. what happens and how probably it is that a Akubarik falls at your feet.
  10. Obviously your are wiser than me when it comes to talk about critical components. I’m just an electrical engineer being faced with discontinuation of critical components on a regular basis. Distortion can’t occur if the amp has to produce „silence“. What you probably meant is noise. A usual measurement figure for amps is THD+N (total harmonic distortion plus noise).
  11. That’s right, but it immediately raises two questions: Why is Linn happy again to offer Dynamik power supplies as an upgrade option for old Klimax amps? And why has this option been discontinued quite a long time ago? Based on a lot of speculations (and a few educated guesses), I’d say that a crucial component of the Klimax Dynamik power supply (e.g. an IC) has been discontinued by its manufacturer. The usual way to cope with this issue is to buy the estimated amount of this crucial component (at its LTB date) needed to still be able to sell the product until there is a solution available for replacing the crucial component. If my speculations are applicable, the answers to both questions are obvious. The option to upgrade old Klimax amps with a Dynamik power supply has been discontinued in favour of making sure that there is no shortage of the crucial component for the ongoing production. And the limited offer for upgrading again would indicate that Linn have still enough stock of the crucial component and already developed a solution for replacing it in the near future.
  12. You’re welcome. I’m glad to hear that your system is now back in a working state.
  13. 4.75.345 was a beta version only available for those who opted in to participate in the beta program for device updates. 4.75.360 released today is the first official release offering the mentioned features.
  14. Certainly it isn’t. But using a Urika II makes it somewhat special. Let’s see what akamatsu reports.
  15. As you, I haven’t seen any fatal issue with Davaar 75 although I did install six of the seven available beta versions on my KSH (missed 4.75.358 since I haven’t used my system on 11th of February...). IMHO it’s always worth to report any issue one is seeing to Linn. My personal experience with various setups is, that I never needed the fallback option, but sometimes needed to downgrade the firmware in order to get my system into a working state. It’s not my intention to claim that the issue akamatsu sees hasn’t been caused by glitch during the update process, but I consider it to be very unlikely. More likely is IMHO, that the issue is caused by the combination of devices he’s using. I vaguely remember that quite some time ago an update caused KEBs to produce no output signal at all.