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Thread: Caiman SEG making painful noise when changing source or album

  1. #11
    Join Date: Mar 2014

    Location: KY - Scotland

    Posts: 5,465
    I'm Mike.

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    Quote Originally Posted by Phonostage Records View Post
    Hi... ok thanks very much. I will contact Stanley and see if he is aware of it and also ask if this is the kind of thing that could be controlled using software.. ie some sort of delay written in to the audio output so there is a second or so of silence if you change anything.. or would some sort of relay be needed to acheive this (you can tell I am no engineer!)
    Thanks
    Tony
    See post #4

  2. #12
    Join Date: Jun 2017

    Location: United Kingdom

    Posts: 24
    I'm Tony.

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    Oops silly me! Thanks!

  3. #13
    Join Date: Mar 2014

    Location: KY - Scotland

    Posts: 5,465
    I'm Mike.

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    Quote Originally Posted by Phonostage Records View Post
    Oops silly me! Thanks!
    Lol don't worry I'm a skim reader too, bigtime.

    Great to see that Stan is very hands on with any issues, mind you they are rare with the Beresford kit.

    I have a SEG and it's a great DAC for the money.

  4. #14
    Join Date: Jun 2017

    Location: United Kingdom

    Posts: 24
    I'm Tony.

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    I think it’s a great DAC full stop... i’ve had some truly immersive experiences with it so far. It is very capable. Listening mode 3 suits my setup very well though I can’t remember exactly what that is... Stan can I appeal to your good nature and adapt Sound Signature mode 3 to accommodate the digital dropout since that’s my favourite???
    Best Regards
    Tony

  5. #15
    Join Date: Feb 2008

    Location: http://www.homehifi.co.uk

    Posts: 6,288

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    I am sending off a test firmware to someone on another forum to check out for me so that I know if the solution works or not. I can then insert that part of the code in the firmware of all the other DACs in case anyone else has that issue. I also want to merge the Caiman MKII and the SEG firmware into one so that MKII owners can benefit from the updates in the SEG firmware.

    The one problem I have is that I would like to use the same type of chip for the firmware as the Bushmaster MKI. It's a more expensive chip, but it gives some sonic improvements that I just can't get out of the chip that is used on the later DACs. I dropped that chip since it added an extra U$5 to the cost from the moment it was bought at the factory end, to the moment it was sold with the DAC on my website. The main reason why I haven't tried doing that so far is because the initialisation routine for the BMI chip is so complex, I just can't figure out how to code the equivalent into the firmware of the other DACs. Either the DAC refuses to boot up, or refuses to pass any sound through it. But I'll figure it out hopefully.

  6. #16
    Join Date: Jun 2017

    Location: United Kingdom

    Posts: 24
    I'm Tony.

    Default Hi. How did you get on with this Stanley?

    Hi Stanley and all...I thought I would reinvigorate this thread now that a bit of time has elapsed..... I was wondering Stanley, Did you get chance to test the firmware you were working on? I know you said you were going to send something to someone on the forum to look at. Sorry if I’ve missed something, I haven’t been on the forum in a while
    Best regards
    Tony

  7. #17
    Join Date: Feb 2008

    Location: http://www.homehifi.co.uk

    Posts: 6,288

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    Yes it's all sorted. The beta test version worked fine and sorted the problem out. I made some additional changes to the code to tweak the sound so that it would benefit the SEG and the MKII when used with the SuperCap PSU. And yes, the SEG and MKII will now both work with the same SEG-11 firmware.
    The Firmware code is SEG-11 for the final version.
    I was hoping to sell and ship it together with the SuperCap PSU of mine, but the latter has suffered from some delays in production. As a consequence I haven't put any notification on my website.
    The new firmware will work with or without the SuperCap PSU. The SuperCap feature in the firmware doesn't affect the operation of the DAC or the sound from it. That feature is automatically activated when using a 15V power supply, or using the SuperCap at 15V. So those with a 15V PSU would get the most benefits of the SEG-11 firmware.
    If you need the SEG-11, email me and I can sort you out with one for just the cost of the part plus P&P. Or you can pass by and I can do the firmware upgrade whilst you wait, for just the cost of the part. But that's just for you. Everyone else will have to do it via the sales option on my website when I list it.
    Last edited by StanleyB; 02-09-2018 at 10:59.

  8. #18
    Join Date: May 2016

    Location: Notts

    Posts: 2,741
    I'm Geoff.

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    Quote Originally Posted by StanleyB View Post
    Yes it's all sorted. The beta test version worked fine and sorted the problem out. I made some additional changes to the code to tweak the sound so that it would benefit the SEG and the MKII when used with the Supercap PSU. And yes, the SEG and MKII will now both work with the same SEG-11 firmware.
    The Firmware code is SEG-11 for the final version.
    I was hoping to sell and ship it together with the Supercap PSU of mine, but the latter has suffered from some delays in production. As a consequence I haven't put any notification on my website.
    If you need the SEG-11, email me and I can sort you out with one for the cost of part plus P&P. that should be about £7 for gift payment, or £8.00 if you need a Paypal invoice. Or you can pass by and I can do the firmware upgrade whilst you wait for the cost of the part.
    Stanley,

    How does the firmware update work? Also, when will you be posting details of the Supercap PSU?

    Geoff

  9. #19
    Join Date: Jun 2017

    Location: United Kingdom

    Posts: 24
    I'm Tony.

    Default HI, many thanks Stanley - I have the same question as Geoff...

    Thanks Stanley, that is great news and I am sure we all appreciate your efforts. I have the same question as Geoff - If you could tell us a bit about how to apply the update (do you just send a chip?) - then I can decide if it is within my or my friend's technical span to apply it. Unfortunately if I recall I am a bit of a distance from you
    Best Regards
    Tony

  10. #20
    Join Date: Mar 2009

    Location: Chelmsford, Essex

    Posts: 433
    I'm Gareth.

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    If I’ve read Stan’s post correctly, the SEG-11 firmware will be contained in a new chip which, with a little care and using a small flat-bladed screwdriver, is very easy the swap out.

    EDIT: It’s the chip marked ‘SEG 7’ in the pic below


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