Deleted
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Post by Deleted on Oct 3, 2015 10:36:27 GMT
Use a timer and charge it overnight. Yep that was my next plan  |
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Post by Tweaker on Oct 20, 2015 21:04:46 GMT
A little tweak i can recommend. I upgraded the 47uF regulator bypass caps with two audio grade oscons. I guess you can use your favorite caps, but the oscons works for me. Even if i am "only" on V6 firmware, it sounds pretty darn good, with Tidal in wasapi exclusive mode.
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Post by MartinT on Oct 20, 2015 23:59:09 GMT
I like Os-Cons, superb caps.
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Post by krzysztof on Oct 21, 2015 5:36:03 GMT
A little tweak i can recommend. I upgraded the 47uF regulator bypass caps with two audio grade oscons. I guess you can use your favorite caps, but the oscons works for me. Even if i am "only" on V6 firmware, it sounds pretty darn good, with Tidal in wasapi exclusive mode. Yes, good choice, BTW which ones did you use exactly? I had also some tweak, replacing volume pot with something up to the task using this potentiometer: uk.farnell.com/vishay-sfernice/p9a2r100fisx1503ml/pot-log-dual-50k/dp/8791392?ost=P9A2R100FISX1503ML&categoryId=&categoryName= Very good result without any scratching noise when using the pot etc. Fits perfectly, one thing you need to do is to change the knob to something different. |
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Post by MikeMusic on Oct 21, 2015 7:31:35 GMT
I always like a better sound.
Don't fancy changing caps though
How do you go about it ? Assume soldering involved
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Post by MartinT on Oct 21, 2015 7:48:43 GMT
Yes, soldering is definitely required. If you've never done it before, don't start with Stan's beautiful PCBs. It requires lots of practice, and component removal ideally requires a solder sucker.
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Post by MikeMusic on Oct 21, 2015 12:03:03 GMT
Certainly not one for a soldering Muppet like me then
Dry joints r us - if I'm that good
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Post by krzysztof on Oct 21, 2015 12:41:00 GMT
Yes, soldering is definitely required. If you've never done it before, don't start with Stan's beautiful PCBs. It requires lots of practice, and component removal ideally requires a solder sucker. Yes. For the pot not only the sucker but also desoldering Cu tape and flux. |
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Post by Tweaker on Oct 21, 2015 14:10:31 GMT
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Post by MartinT on Oct 21, 2015 14:41:32 GMT
The problem is where to find genuine Sanyo Os-Cons. I don't trust any of the cheap ones on eBay.
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Post by krzysztof on Oct 22, 2015 7:12:20 GMT
Ah, so nothing specific. SH versions. For the bypass caps important thing is noise and leakage, especially the last one I guess. |
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Post by MartinT on Oct 22, 2015 7:18:43 GMT
Has anyone tried Panasonic Os-Cons?
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Post by stanleyb on Oct 23, 2015 7:22:03 GMT
I bought some 47000uF super capacitors to try out in the 3.3 and 5V line, but I have not got round to fitting them yet. Maybe something to do for the winter.
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Post by MartinT on Nov 4, 2015 19:37:36 GMT
I've had a fascinating time with Stan's latest SFW firmware, unlocking a tiny bit more of the CPU's power and reducing down to three modes to cram in some more code. This has allowed him to do some very trick stuff with the clock. The end result is something akin to the fine detail, air and space that TonyC yielded from upgrading my Ayre player. That the Caiman can even approach the performance of the Ayre, let alone knock on its door, is testament to just how good the Caiman-II is.
I'll leave it to Stan to describe the firmware in greater detail if he so wishes.
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Post by John on Nov 4, 2015 19:52:59 GMT
Does the Ayre has a digital out as it might be worth trying it with the Ayre as a Transport
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Post by MartinT on Nov 4, 2015 20:54:46 GMT
Yes, I've done that too but usually use my Blu-ray player as an imperfect digital source for testing.
The Ayre still wins on authority and bass extension.
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Post by John on Nov 5, 2015 5:21:43 GMT
Yes the Ayre is very special but getting the Caiman in the same ball park is a great achievement
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Post by stanleyb on Nov 5, 2015 7:11:42 GMT
I had to double check my Caiman PCB setup last night after Martin mentioned that the bass was not as solid as his reference player. I then realised that some of the mods on my PCB are contributing to a better sound together with the experimental firmware. I confirmed that by swapping the firmware between my modded and an unmodded PCB. The difference is way out. Without the mods the test firmware is not performing to full strength. It is drawing more current from the power supply, but a couple of internal smoothing caps are not large enough to be able to supply smoothing at a sustained rate.
I have emailed Martin the mods for him to play about with.
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Post by krzysztof on Nov 5, 2015 12:07:34 GMT
I had to double check my Caiman PCB setup last night after Martin mentioned that the bass was not as solid as his reference player. I then realised that some of the mods on my PCB are contributing to a better sound together with the experimental firmware. I confirmed that by swapping the firmware between my modded and an unmodded PCB. The difference is way out. Without the mods the test firmware is not performing to full strength. It is drawing more current from the power supply, but a couple of internal smoothing caps are not large enough to be able to supply smoothing at a sustained rate. I have emailed Martin the mods for him to play about with. Very nice! The second iteration of the firmware is already very good, can't wait for the another one if goes event further. Do you think Stan that modding PCB for second iteration of the firmware may bring the benefit as well - option 4? |
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Post by MartinT on Nov 5, 2015 12:22:35 GMT
Thanks, Stan. All caps ordered (47000uF Tokin super caps, 10nF WIMA caps and I've found some Sanyo Os-Con 22uF 25V to bypass the two large reservoir caps), so I'll let you know what I hear when I've modded it all up.
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