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Post by MartinT on Apr 9, 2019 5:02:31 GMT
I'm not sure yet, Tom. I can't read it at that distance and I thought I might use it when guests are listening as they often want to look at my control tablet to see what is playing. It's a lot less distracting than having a TV in the room and I tend to know what I'm listening to unless I have Radio Paradise playing. I also frequently listen with my eyes closed.
I think it'll be for occasional use.
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Post by MartinT on Apr 17, 2019 9:59:09 GMT
Some very small optimisations: set the LKS DAC and P10 regenerator displays to auto-off now that I know what the system is doing and streaming has become so reliable. The LKS, like the Pass, uses an electro-fluorescent display which radiates a lot of EMI.
Coming tomorrow: some inexpensive OCC mains cable (I have a spare gold plated plug and silver IEC socket) so that I can power the 4G router from the P10. Also a ferrite EMI sheet to try between the two transformers in the LKS to further isolate the digital from the analogue transformers.
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Post by Deleted on Apr 17, 2019 12:52:36 GMT
Hi Martin that should help  In a couple of weeks my new close quarter and wide band 7.5Ghz emi/rfi probes will be ready, so we can actually check this out in real time to discover if this makes a difference and at which frequency point(s) which we can maximize all upgrades to their fullest potential. |
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Post by MartinT on Apr 18, 2019 15:04:18 GMT
3m of Supra Lo-Rad 2.5 OCC cable made up with connectors going in to power the router as soon as I get home.  |
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Post by SteveC on Apr 18, 2019 16:21:37 GMT
3m of Supra Lo-Rad 2.5 OCC cable made up with connectors going in to power the router as soon as I get home. After you've kissed Ruth, asked her how her day has been and complimented her on her hair!  |
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Post by MartinT on Apr 18, 2019 16:26:13 GMT
Yep, protocols duly satisfied! |
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Post by petea on Apr 18, 2019 17:01:32 GMT
You certainly know how to raise suspicions! |
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Post by MartinT on Apr 18, 2019 17:03:00 GMT
So now the TP-Link 4G router, via my 12V Weiliang linear PSU, is powered from the P10 regenerator. A couple of sweeps of Cleanwave to remove residual magnetics, restarting the streamer and I was good to go.
First on, some Dire Straits (Water of Love). Oh yes, that sounds cleaner with more apparent resolution. I'm going to listen to a few more tunes before putting the EMI shield between the two transformers in the LKS DAC.
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Post by MartinT on Apr 18, 2019 17:26:33 GMT
It's the same story with Paul Simon and Joan Armatrading. More detail, calmer presentation. Almost like adding a grounding box.
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Post by MartinT on Apr 18, 2019 19:33:12 GMT
I've now stuck the small 60 x 60mm ferrite EMI shield on the copper shield around the digital toroid transformer, between it and the analogue transformer, in the LKS.
This has had a small but different effect, cleaning up detail in the high treble.
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Post by MartinT on Apr 21, 2019 16:22:00 GMT
Today everything has gelled really well. I think the clock and new PSU components in the LKS DAC took some time to settle. The shielding and router power have also made their contributions. Whatever, it's making musical magic today. I know when I play the 'link' game (one song leads to another) and can't get away that the system is really in its groove.
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Post by MartinT on Apr 25, 2019 17:38:56 GMT
Tonight I applied a second larger piece of EMI shielding (from Laird) around the side of the digital toroid facing the circuit board. So now both toroids have copper shielding and the digital one has additional ferrite shielding from the analogue toroid and from the circuit board. For good measure, I stuck a tiny piece on the crystal oscillator to shield and damp it, too.
Going to chill with an evening of music now.
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Post by MartinT on Apr 25, 2019 20:09:14 GMT
For a total outlay of about a tenner for two small pieces of ferrite EMI shielding, the effect far outweighs the cost. I am surprised at how good the LKS sounds tonight. A real step up in presentation - more present, more vivid, more natural. Very pleasing.
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Post by John on Apr 25, 2019 20:27:43 GMT
Good to hear Martin that pushing the LKS further
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Post by MartinT on May 8, 2019 17:19:18 GMT
I've just tried a Blue Jeans HDMI cable (their top of the line FE series), which is a bonded pair design made in the USA and loaned to me to try out. This is for my I2S run from the streamer to DAC. Despite being a 2m cable, too long for my purposes, it doesn't half give my Audioquest Cinnamon a run for its money. I hear a very slightly less bright sound with a little more depth, but still retaining fantastic dynamics and detail.
I've just ordered a 3 feet (0.9m) length as, at this price, it's a no-brainer.
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Post by Deleted on May 8, 2019 21:25:14 GMT
It is surprising little known number is it not especially as it's over 10 years old as you say no brainier for the very modest outlay
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Post by MartinT on May 9, 2019 5:33:04 GMT
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Post by MartinT on May 9, 2019 9:38:00 GMT
I've just received my el-cheapo dual-power laptop CD drive so I'll give it a try using Volumio's built-in CD playback capability.
Not saying I'll use it often, but it'll be nice to have CD playback in my system again.
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Post by Deleted on May 9, 2019 11:24:43 GMT
I've just received my el-cheapo dual-power laptop CD drive so I'll give it a try using Volumio's built-in CD playback capability. Not saying I'll use it often, but it'll be nice to have CD playback in my system again. Lol you just couldn’t keep away from the format! |
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Post by MartinT on May 9, 2019 11:44:50 GMT
Nah, it's more to play the odd few discs that don't appear on streaming and that I can't be bothered to rip!
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