Soldering issue.
Hi,
I am finishing my build of USSA-5 ... finally 🙂 Maybe strange question, but I will ask anyway. Do you have some special tip or trick on how to solder signal cable to NEUTRIK connector? The ground pin is not the problem but the signal pin is. Alternatively, is there some other way to connect signal wire to the dedicated pin? When I am trying to solder signal wire to signal pin, it just does not adhere properly. Thanks. On the photo, you can see type of connector I am using.
Thanks,
Miroslav
Hi,
I am finishing my build of USSA-5 ... finally 🙂 Maybe strange question, but I will ask anyway. Do you have some special tip or trick on how to solder signal cable to NEUTRIK connector? The ground pin is not the problem but the signal pin is. Alternatively, is there some other way to connect signal wire to the dedicated pin? When I am trying to solder signal wire to signal pin, it just does not adhere properly. Thanks. On the photo, you can see type of connector I am using.
Thanks,
Miroslav
Attachments
Fill the Neutrik signal pin “cup” with solder.
Tin “wet” the signal wire end with solder.
Reheat the “cup” to melt the solder, then insert the tinned signal wire into the “cup”.
That should give a nice solid connection 😉
Tin “wet” the signal wire end with solder.
Reheat the “cup” to melt the solder, then insert the tinned signal wire into the “cup”.
That should give a nice solid connection 😉
That's strange. I have never had such problems with RCAs, Neutriks included. Since you are fine with the GND lug but not the "hot" pin, which is a bit heavier than the the GND lug, I was thinking your soldering iron might be on the cold side. Can you adjust it to go a bit hotter?
Agree, you need a hotter soldering gun and a little of flux.
Soldering gun tip in good condition absolutely needed! 😉
Soldering gun tip in good condition absolutely needed! 😉
Finished USSA-5.
After a long time, I was finally able to complete fabulous FAB USSA-5 amplifier. First of all, many thanks to FAB, not only for this design and boards, but also for excellent QOS and his willingness always answer the questions, even though they could be asked many times by many members before. Many thanks to other members for sharing their knowledge and inspiration as well. Here you can see some photos of my amp.
After a long time, I was finally able to complete fabulous FAB USSA-5 amplifier. First of all, many thanks to FAB, not only for this design and boards, but also for excellent QOS and his willingness always answer the questions, even though they could be asked many times by many members before. Many thanks to other members for sharing their knowledge and inspiration as well. Here you can see some photos of my amp.
Attachments
That's lovely! Congratulations. I had not seen the "bottom mount" type of line filters previously. That opens up a lot of options for chassis arrangements vs. having it directly with the PIM. Thanks for posting your pics. Always providing new ideas.
That's a pretty build! Congratulations!
What are those bricks between the PSU boards?
No speaker DC protection?
How does it sound to your ears?
First plastic brick is inrush current limiter. Second stainless steel brick is AC EMI filter (FN2090-10-06 FILTER). I did not implement any speaker protection, mainly because two reasons. I do not want to put anything additional in the signal path. Also did not find any solution which I would like to have (expect XRK SSR speaker protection kit). But if someone could recommend me some really good speaker protection using DC voltage from my PSU I would be grateful.
Well speaking about sound performance, I have listened to it only for maybe 6 hours so far, so I don’t feel confident to make any statements yet. But sound is … 😊 … 😊 … very detailed, there is very clear difference between the tones, voices and instruments (very strong audible distinction where everything got its place) and more nuances are audible as well. When I was listening to Sara Bareilles I almost thought she is whispering straight to my ears 😊
I am using RME ADI-2 FDAC FS for source.
Well speaking about sound performance, I have listened to it only for maybe 6 hours so far, so I don’t feel confident to make any statements yet. But sound is … 😊 … 😊 … very detailed, there is very clear difference between the tones, voices and instruments (very strong audible distinction where everything got its place) and more nuances are audible as well. When I was listening to Sara Bareilles I almost thought she is whispering straight to my ears 😊
I am using RME ADI-2 FDAC FS for source.
Amadeus00,
Congratulations on your successful build - and very well executed too!
What speakers are you using with the USSA-5 now?
Congratulations on your successful build - and very well executed too!
What speakers are you using with the USSA-5 now?
Beautiful build Amadeus!
You will be extremely satisfied that you finished building this amplifier.
Love those sexy Toroidy’s 😀
The XRK DC protection modules are very good, and there is "nothing" in between the amp and the speakers. The modules are tiny and very easy to use.
I got Yamaha NS-333. After some upgrade to my DAC and AMP I will now try to upgrade speakers as well.
Amadeus00,
Bravissimo! Beautiful build.
Regarding speaker protection there are only two I would recommend. XRK's has been mentioned already. But Tom Christiansen's Neurochrome Guardian-86 or Guardian-686 are what I would use in ANY amplifier build. They have been tested on his Modulus 686 amplifier design and they do not increase THD, IMD or change the spectral harmonic measurements at all.
If you don't like them after implementing them, then I will buy them from you...guaranteed.
Best,
Anand.
Bravissimo! Beautiful build.
Regarding speaker protection there are only two I would recommend. XRK's has been mentioned already. But Tom Christiansen's Neurochrome Guardian-86 or Guardian-686 are what I would use in ANY amplifier build. They have been tested on his Modulus 686 amplifier design and they do not increase THD, IMD or change the spectral harmonic measurements at all.
If you don't like them after implementing them, then I will buy them from you...guaranteed.
Best,
Anand.
Amadeus00 !!
Perhaps the best construction I have seen so far congratulations on your effort!!
Perhaps the best construction I have seen so far congratulations on your effort!!
Amadeus,
Beautiful work! I glad that so many have now built the amp!
Try this one: it supposed to be distortionless, or nearly so.
Guardian-686: High-End Speaker Protection Circuit for DIY Amplifiers – Neurochrome