Ahhh.....now I understand.
Same RC pieces just wired in direct or new stuff?
I’m not opposed to changing out the whole thing if need be?
Edit.....thanks to everyone, wife is about to throttle them BB’s if I don’t get back to work!
Same RC pieces just wired in direct or new stuff?
I’m not opposed to changing out the whole thing if need be?
Edit.....thanks to everyone, wife is about to throttle them BB’s if I don’t get back to work!
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I mean there is opportunity to experiment with the RC network actual components and I suspect these are part of the 'voicing' that you are not so keen on.
First mission is to 'revoice' the AC input, then 'revoice' the AC output.....after that we can look at the bits in between.
Dan.
Beware of sending the amp into oscillation, it could damage it, so my last post wasn't strictly true 😉
The general idea is to eliminate the middlemen, not add more, so extra lugs are no-no.
- Good: there appears to be holes in the posts, so strip the wire, jam it in there tight, and solder.
- Better: same process plus replacing the wires with better ones.
As I suspected, it was your usual subjective listening comparison.
I didn't say that's what Dan asked you about. I was borrowing his phrase.
Are you calling Bob brainless? 😱
Perhaps you'd be interested to finance an objective perceptual test of difference between a spot welded connection to a soldered one applicable to 95% of human population? The result could make you filthy rich. 🙂
Thanks Zung. I’m not even going to start talking about wire in public!
Been researching the zobel network at the output and is matching the R to the complete speaker DCR a good thing?
Pavel has all the markings of a serious engineer who investigates and underpins his conclusions with credible information gathered by applying objective scientific procedure and method.
That is why I believe him when he makes a statement. Because it coincides with my belief system that progress can only be made by thinking hard and valuating all that hard thinking by verifying the heck out of it.
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Ever asked yourself the same questions? I’m sure everybody would be very interested in finding out your answers.
Not taking out the whole thing.
Changing it out (as in eliminating the board), putting back to same RC specs or different.
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It was just a play on the old saying 'To become an expert at X takes 10,000 hours'
I didn't think anyone wave soldered SMT in the 21st century? 6 zone reflow ovens are the norm for unleaded production boards.
You might want to get hold of an oscilloscope if you are going to fiddle about with Zobel networks
You don't need an oven to do SMD but if you have a large board or high density design it certainly saves time.
Most of the really cheap ovens we tried at my office were terrible. The most common one is sold as T962A from various Alibaba type vendors. It sucks, I can't recommend it for lead free soldering because it's so uneven. It might be okay with leaded paste and small boards. I have heard some of the toaster ovens with PID control mods are better than it is too.
We use a Torch T200C+ (same as T200N+ without nitrogen). I've been pretty impressed with it, it just works. Directly from China, but there were no other decent looking options in that price range. I think Eurocircuits sells one that might be okay too.
It's not super cheap, I think around $2000, but seemed to be the best thing in that price range as far as I know. The software it comes with is scary and didn't even start without crashing on my PCs, so I modified this old Python GUI someone wrote to work with it.
Torch T200N Reflow Oven
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Yes, no one waves SMT boards as far as I know. SMT is all reflow except if you have lots of through hole parts mixed and you might get wave on the bottom or selective wave.
I'm not sure if the lead free solder discussion from 12 hours ago is still going, but there's this.
I dunno what constitutes proof or what, but I were a manufacturer of a consumer device with lots of safety features, for all safety critical solder joints I'd be using the same type of solder as approved for satellites and other spacecraft.
For the radio, whose only safety feature may be playing the official announcement of imminent nuclear attack, lead-free solder should be plenty good enough.
https://www.eetimes.com/document.asp?doc_id=1264373
I dunno what constitutes proof or what, but I were a manufacturer of a consumer device with lots of safety features, for all safety critical solder joints I'd be using the same type of solder as approved for satellites and other spacecraft.
For the radio, whose only safety feature may be playing the official announcement of imminent nuclear attack, lead-free solder should be plenty good enough.
https://www.eetimes.com/document.asp?doc_id=1264373
Considering how many lead alloy solder joints we listen through in every commercial recording, it's amazing we can even walk around.
All good fortune,
Chris
All good fortune,
Chris
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