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Post by NPAudio on Aug 2, 2022 9:18:23 GMT
Before starting the mod I tried wrapped the nutube, ribbon and both sides of the board in copper tape. I tried the shielding grounded, floating and connected to chassis.
I reduced some 🤷♂️ but lost the will to live after 4 hours 😂
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Post by whitigir on Aug 2, 2022 11:15:43 GMT
Before starting the mod I tried wrapped the nutube, ribbon and both sides of the board in copper tape. I tried the shielding grounded, floating and connected to chassis. I reduced some 🤷♂️ but lost the will to live after 4 hours 😂 Better to wrap the inner plastic chassis that host the back plate and the grooves to slide the module in , with copper and grounding it by a very small cable instead. This will only leave out the slot to connect the module, and wrapping up the tube windows as well , unless you want to leave it out …. But…even so, there will be interferences. May want to just custom made a back plate by copper, and then also wrapping the inner plastic chassis. Doing this will ground the inner wrapping to the copper back plate and need no wires, with the thicker plate to tackle the Wifi issues. This will improve the overall system rather than only Amp13 |
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Post by NPAudio on Aug 2, 2022 11:40:11 GMT
Before starting the mod I tried wrapped the nutube, ribbon and both sides of the board in copper tape. I tried the shielding grounded, floating and connected to chassis. I reduced some 🤷♂️ but lost the will to live after 4 hours 😂 Better to wrap the inner plastic chassis that host the back plate and the grooves to slide the module in , with copper and grounding it by a very small cable instead. This will only leave out the slot to connect the module, and wrapping up the tube windows as well , unless you want to leave it out …. But…even so, there will be interferences. May want to just custom made a back plate by copper, and then also wrapping the inner plastic chassis. Doing this will ground the inner wrapping to the copper back plate and need no wires, with the thicker plate to tackle the Wifi issues. This will improve the overall system rather than only Amp13 I totally agree buddy 👍 that is what I would do personally but no good for people not wanting to send in their DX300/320 or keep their warranty intact 😅 |
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Post by whitigir on Aug 2, 2022 11:49:47 GMT
I really don’t understand the mind set of gluing plastic back plate. Why not just metal plate with some screws ? It is more friendly to the environment as well while being more rugged, easier to services, and also taking care of interferences
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Post by NPAudio on Aug 2, 2022 12:58:16 GMT
I guess it just comes down to it's cheaper 🤷♂️
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Post by whitigir on Aug 2, 2022 13:42:27 GMT
I guess it just comes down to it's cheaper 🤷♂️ If I was a labor and forced to smell all those glues days in and days out…I am going to sue somebody roflmao |
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Post by NPAudio on Aug 5, 2022 15:31:07 GMT
DX320 main body is easier to upgrade than the DX300 👍 Attachments:
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Post by NPAudio on Aug 7, 2022 0:00:40 GMT
The final EXN-S spec but Solen Silver Sound capacitors are still out of stock 🤔😅 I will be doing an EXN-2 which will be the same as EXN-S but with an alternative to the expensive 3 x Solen Silver Thanks to whitigir for the PMLCAP idea here too (They are used by Sony in the WM1A/Z) and to maxx134 for trying it out on his EXN-S and for the detailed feedback on the different mods. Also for sending me some Solen Silver in the first place 👍 |
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Post by whitigir on Aug 7, 2022 17:04:59 GMT
The final EXN-S spec but Solen Silver Sound capacitors are still out of stock 🤔😅 I will be doing an EXN-2 which will be the same as EXN-S but with an alternative to the expensive 3 x Solen Silver Thanks to whitigir for the PMLCAP idea here too (They are used by Sony in the WM1A/Z) Beautiful!!! 😻😻 |
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Post by NPAudio on Aug 9, 2022 18:50:25 GMT
AMP12EXN-S4625 An alternate version using the most excellent ADA4625-1 x 4 Opamps
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Post by NPAudio on Aug 9, 2022 18:52:38 GMT
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Post by lafeuill on Aug 11, 2022 23:45:20 GMT
Here's a work in progress AMP13EXN It is sounding great ! 😁👍 i'm leaving it here until more AMP13 stock arrives so I can A/B before final component replacements and tweaks if any. Say the word and I send you mine 😇 Hi from Paris, been a silent admirer for a good while on HF. Was waiting for the new AMP12 mod to be final to send it to you, but I really enjoy stock AMP13 way more than 12, therefore shifting my priorities. ^^ So, want mine ? 😊 |
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Post by NPAudio on Aug 16, 2022 20:29:42 GMT
My stock of AMP13 arrived so I could A/B with AMP13EXN and make final modifications. |
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Post by NPAudio on Aug 16, 2022 20:33:23 GMT
Here's a work in progress AMP13EXN It is sounding great ! 😁👍 i'm leaving it here until more AMP13 stock arrives so I can A/B before final component replacements and tweaks if any. Say the word and I send you mine 😇 Hi from Paris, been a silent admirer for a good while on HF. Was waiting for the new AMP12 mod to be final to send it to you, but I really enjoy stock AMP13 way more than 12, therefore shifting my priorities. ^^ So, want mine ? 😊 Sorry for the delay with covid etc. I just made the final adjustments today now that my stock of AMP13 arrived for A/B comparisons. Stock AMP12 is a bit meh after hearing the modded ones. |
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maxx134
Hardware Mods Private
Posts: 84
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Post by maxx134 on Aug 19, 2022 0:15:16 GMT
Sorry for the delay with covid etc. I just made the final adjustments today now that my stock of AMP13 arrived for A/B comparisons. Stock AMP12 is a bit meh after hearing the modded ones. Woah, I just noticed the PMLCAP cap underneath both your new amp boards... Definitely a game changer with dynamics there. The amp13 mod looks amazing. I have question about the amp12 opamp replacement. In whitigir muse amp swap, it turned out louder output. Do you feel the amp12 opamps replacement change any gain output level? Or same level? Just curious if you have opamp swapped with known opamp specsheet, maybe you could also adjust to increase any power gain potential? I know it's probably opening a can of worms, so just a theoretical question. |
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