This is the most truthful preamp I've used, https://www.aliexpress.com/item/4000761808834.html?spm=a2g0s.9042311.0.0.44084c4dhJkC57, compared with Slagle autoformers, TKD pot.
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The Truth Pre Amp Review
- Thread starter amirm
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KSTR
Major Contributor
Eventually, everything falls apart. Sealed/dust-proof industrial type, large size and multiple fingers on the wiper is usually good for many 10,000 cycles.
I hate it when preamps lie.
AudioSceptic
Major Contributor
How is that wrong if he reverse-engineered it from photos? How is he giving away any secrets?
This is part of the PT Barnum act. Don’t ascribe truth value to it, it’s entertainment.
mhardy6647
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That's interesting!
MakeMineVinyl
Major Contributor
Creating a schematic of something from visual observation and posting that schematic is fair game. If he had somehow published your personal schematic, it would be different, but Solderdude is the author of his schematic. It might not even be accurate, but he has every right to post it.
Actually its such as simple device, I'm almost inspired to create my own preamp using a nice microcontroller stepped relay with quadrature encoder scheme with the best buffer I can find. Using the PWM output of the microcontroller I could drive a real VU meter which indicates the position of the volume control (although that would be limited to 20db or so) - that may just be the golden gimmick since VU meters are so trendy and nobody else as far as I know has used a VU meter for that function. I may fire up Altium and just do it. Although my wiring will look more NASA inspired. I've been looking for a good use for all the lacing twine I've got stored away.
BTW, I've got to stop editing this post with every new idea I come up with, or I'll never get anything else done.
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"Sod it" is definitely more of a British thing.
KSTR
Major Contributor
Yeah, lacing twine, mil/aerospace style cable bundling... also very good for controlled crosstalk ;-)
MakeMineVinyl
Major Contributor
You don't bundle adjacent channels together, obviously, and shielded wire is a given. But otherwise mil/NASA all the way. This might be the first preamp to be qualified for landing on Mars.
Distilled down it was violence is the correct form of attack, truth isn't an acceptable form of debate, seems like the lesson was learned.
There is a lot of sealioning going on in this thread.
AudioSceptic
Major Contributor
How do you say "solder"?
H-713
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"Inconceivable" that a cable fails. Seriously? Seriously?
A lot of the professional sailboat racing teams have a policy to replace shrouds every x number of years for this very reason. I have seen it happen many times, and it's always a mess.
I crew for my brother on a Nacra 5.8 (high performance off the beach catamaran.) He is an engineer, and religiously changes over standing rigging on a regular cycle. However this season just gone, we suddenly both found ourselves in the water next to a capsizing boat. The failure was the common trapeze line failing at the hounds, it fractured inside the swage.
No failure is inconceivable. This was arguably an issue with a common load point. The design had changed from the previous use of fully separate lines to a neater design, but one that imposed twice the load on the part that failed.
H-713
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I crew for my brother on a Nacra 5.8 (high performance off the beach catamaran.) He is an engineer, and religiously changes over standing rigging on a regular cycle. However this season just gone, we suddenly both found ourselves in the water next to a capsizing boat. The failure was the common trapeze line failing at the hounds, it fractured inside the swage.
No failure is inconceivable. This was arguably an issue with a common load point. The design had changed from the previous use of fully separate lines to a neater design, but one that imposed twice the load on the part that failed.
In the last few years, I've seen at least three cases where broken forestays have destroyed jibs on E-Scows or small keelboats. All I can say is that a forestay is a whole lot less expensive than a jib. Fortunately none resulted in dismastings, though I've seen at least a few boats lose their mast on the starting line from broken shrouds. Usually those shrouds are at least 10 years old.
The point is, the whole "that doesn't seem like it could ever break" or "It's old, but it looks okay to me!" mindset isn't always accurate.
D
Deleted member 26571
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In where? If you mean my HPA, yes. Look a little farther down the thread and I posted some pictures of the mods I made to them.
Otherwise, I don't know.
"Sodder". I'm from the American South.
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