😱 Stuff like this makes me want to go into business for myself.
I saw a tutorial on how to build the ICE amplifier for less that $400, including a case where the boards just pop right in, and plug and play harnesses.
This is so much simpler than what I do. For the most part I design and build boards from scratch (using old school technology no less; no computer generated masks etc) and modify old chassis. It takes forever but makes for nice (basically one of a kind) equipment. I could never make money building stuff from scratch unless I paid myself 40 cents an hour.
I could assemble and test this in 45 minutes and double my money and still way undercut the market.
Aren't you the guy who told me he was just getting into electronics?
(From message 138)
So which is it ... 45 years or just learning.
(And trust me on this one, if you don't have a basis in electronic theory, you don't understand crossovers either.)
Douglas,
My reference to 54 yrs of paying attention(I’m 54) was more an attempt to get you to pay better attention to your fact checking.
And I believe that I’ve done better in xo design than if I had formal training.....but that’s probably a biased opinion. 😛
To elaborate on that......I find self taught beats over-educated in most cases.
My reference to 54 yrs of paying attention(I’m 54) was more an attempt to get you to pay better attention to your fact checking.
And I believe that I’ve done better in xo design than if I had formal training.....but that’s probably a biased opinion. 😛
To elaborate on that......I find self taught beats over-educated in most cases.
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Of course. The market is saturated?
I might be able to find a way to make mine stand out, like adding some custom feature.
I'm not a businessman. I'm s stubborn old man with a soldering iron and not much eyesight left. I've been soldering electronic circuits since I was ten. I used to buy those bottles of etching acid at Radio Shack and the clerk had no qualms about selling it to me. Now you'd probably go to jail if you sold that stuff to a minor.
You should go for it! .....I mean who wouldn’t want to buy electronics from ‘fast eddie’s audio’ . 😀
BS audio? Is that a real company? It should be.😛
I could do better than that. Whatever I would do wouldn't be a mystery.
It's something to think about.
Good point. I'm terrible at marketing, so thanks.
You've inspired me to come up with a company slogan. "If your delivery guy drops your package, we'll whack him." 😀
(I'm assuming you know who the original Fast Eddie was. Edward Vrdolyak - Wikipedia He was a Chicago politician/lawyer/crime boss. And if you crossed him, he'd have you whacked.)
Not very likely ... Unless you know what a capacitor or a coil actually does in an AC circuit, without knowledge of things like series and parallel resonance, and accidental circuit paths, it's very unlikely you'll be able to design an efficient crossover network.
Can you spot the fatal flaw in the design thumbnails below?
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In your world C1 shouldn’t go straight to ground....but it can come in handy in certain cases as long as it doesn’t distress the amp too much.
C1 is not the problem.
L1 and C1 form a pretty much bog standard second order low pass filter.
C2 and L2 are also not a problem because they also form an ordinary second order high pass filter.
The problem is C3 ... As frequency rises C3 will begin conducting more and more feeding current around L1, into C1 and to ground. At 100 watts, 20khz it will pull close to 4 amps of current. Combine that with the current already drawn for the tweeter and you get pretty close to 8 amps which will almost certainly oveheat an amplifier, possibly killing it. (I highlighted the current paths for you on the new thumbnail.)
You'd know that if you had theory training and knew how the individual parts actually work.
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Well I’ve never seen a reason to do that, and in the two years of testing I have yet to blow anything except a pair of tweeters while trying to hear pavel’s 20khz test tone (should have known better!)
And besides I’m not the one trying to spew my belief system, it just happens that I disagree with the blanket statements you make. There are exceptions to most every rule.
Edit.....Not to fret Douglas,in these two yrs I have learned one very important thing about passive xo’s;
That active dsp multi amp is in my future!
And besides I’m not the one trying to spew my belief system, it just happens that I disagree with the blanket statements you make. There are exceptions to most every rule.
Edit.....Not to fret Douglas,in these two yrs I have learned one very important thing about passive xo’s;
That active dsp multi amp is in my future!
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@Mountainmanbob ...
Whether you've seen reason to do that or not is not the point. The important notice is that you saw no reason NOT to do that. Now you need to sit back and wonder how many other things you've done that were either ill advised or straight up dangerous, without knowing it.
THIS is the importance of understanding basic electronic theory. It is as much to teach you what does not work as what does.
FWIW... I didn't just make this up to torture you... that configuration is used by others and can be seen on several other forums for DIY speakers.
Whether you've seen reason to do that or not is not the point. The important notice is that you saw no reason NOT to do that. Now you need to sit back and wonder how many other things you've done that were either ill advised or straight up dangerous, without knowing it.
THIS is the importance of understanding basic electronic theory. It is as much to teach you what does not work as what does.
FWIW... I didn't just make this up to torture you... that configuration is used by others and can be seen on several other forums for DIY speakers.