Hi guys!😉
I already know that it's a very strange thing but I've a question/curiosity about a "DIN 45500 HI-FI standard": do you know what should be the minum value of the low frequencies to consider a driver really "HI-FI"?...When I say "driver", I mean a simple woofer (or a mid-woofer...at least!).
I apologize for my newbie question!
Thank you in advance for the patience.😉
Best regards🙂
I already know that it's a very strange thing but I've a question/curiosity about a "DIN 45500 HI-FI standard": do you know what should be the minum value of the low frequencies to consider a driver really "HI-FI"?...When I say "driver", I mean a simple woofer (or a mid-woofer...at least!).
I apologize for my newbie question!
Thank you in advance for the patience.😉
Best regards🙂
re:"what should be the minum value of the low frequencies to consider a driver really "HI-FI" - that's a matter of opinion, and also depends on what you want to achieve, Organ Lovers would say they need 16Hz, Rock listeners would be happy with ~ 40Hz, for me somewhere in the low-mid 30s is OK, many small monitors struggle to reach 50Hz.....
My hazy memory for DIN 45500 standard says 100 Hz at -4 dB and 50 Hz at -8 dB and overall response between 100 Hz and 4 kHz at +/- 4 dB.
Yes, that's true. But here's the catch: While there are minimum specs of different HiFi equipment (turntable, amplifier, tuner, microphones), the DIN45500 does not specificly say which frequency range the speakers have to reach at all. There's a diagram which suggests it should start with 50Hz, but that is a misconception.
(DIN45500 for speakers)
There are a lot of small HiFi-speakers from the 70s which were HiFi certified by the DIN45500 and only reached 70-80 or even only 100Hz. How comes that? Only the 'core' part of the linearity (100Hz - 12,5kHz) has to be fulfilled and they have to state the frequency range - and that is, where the speaker leaves the diagram at the lowest point of the limit range.
Some other fun facts about the DIN45500: Amplifiers have to reach 10W Mono (yes, that's a thing, mono-hifi!) or 2x6W Stereo, 1% distortion, 40Hz-12,5kHz. 😱 and the S/N ratio has to reach 50dB but may be worse for higher power amplifiers (above 20W). Oh, and a damping factor of a whopping 3 has to be reached aswell!
Well, that made the DIN45500 pretty useless even at the time it came out, practically every HiFi equipment on the market already exceeded it easily.
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It was thought initially to have a sign which granted 'High Fidelity' of the equipment you're buying. That could have been a good thing since back then hardly anyone knew about what HiFi means or what practically all and any of those specs would mean. At that time it wasn't easy to learn these things without someone kinda guiding you on how to. Literature was rare and most of the books were for sound engineers and physicists.
In reality it became pretty much a commercial thing, a gift to the manufacturers 'yay, even crap can now be sold as HiFi'.
Well, I have to admit, that was very german at the time. 🙄
How many Germans do you need to change a lightbulb? One. They are efficient. And don't have any humor. 😛
Eh, well, yes. 😱 At that time practically noone dared to rise ANY doubt on these self-proclaimed 'experts'. 🙄
What's amazing is how most countries in the world fetish their own bureaucracy, almost despising the norms valid in other parts of the world, as if a product made to meet Australian requirements were not necessarily apt for USA, good enough for Japan, and will have to apply for CE just in case it were dangerous crap...😛
Fortunately enough, as audio is not really a serious business, it's hard to imagine a dieselgate in the hifi industry...😀
Isn't that the price you have to pay for being in the Eurovision Song Contest? 😛
Ooooh, don't say that too loud. Did you know the EU wanted a regulation on the efficiency of hifi-equipment? That would have ruled out all class-A, tube- and still a lot of class-AB amps, because of either not efficient enough or too high reactive current. If that would have been come through, I'm preeeetty sure, we'd have the one or other 'current-gate' too. 😉
Truely hope these green growth regulators will find a sustainable way for the future of human kind on another planet asaaapppp...😎
An externally hosted image should be here but it was not working when we last tested it.
The efficiency of hifi-amps is the least thing that will bring the world down. Really, most of the time they are used just a tad above idle. So many things are over-regulated and other things are plainly ignored. Seriously, there are so many things going wrong in the world, it's so depressing. 🙁
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