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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: There really isn't a Full Range driver. posted by Ralph on December 10, 2024 at 10:52:20:
As a speaker designer, I always find it very hard to talk to people that are not designers, but I still try.
You say, you have never seen a 20 HZ response in a full range driver you say they are doing ok down to 40 HZ. I already addressed this if you read my previous post in this thread. You like many other audiophiles that do not design speakers confuse the range of human hearing 20 HZ to 20 KHZ with the range of speaker systems show me a speaker that plays flat down to 20 HZ you can't. There are no speaker systems that have a F3 even close to 20 HZ so how is a speaker going to play flat down to 20 HZ? A matter of fact show me a sub-woofer that plays flat down to 20 HZ you can't !! you then go on to say playing out to 20 KHZ is not even in the realm of a prayer. Well, the designers of full range drivers must have already prayed and had their prayers answered because there are multiple manufactures with multiple full range drivers that play flat out to 20 to 22 KHZ with measurements to prove it along with independent measurements that have been posted online for decades!! The earth is not flat and full range drivers can play past 20 KHZ.
The beaming of full range drivers is as ludicrous as the doppler effect do you know what a polar response is? Can you measure the polar response of some popular full range drivers and show me were the frequency's narrow so much they are considered beaming? News Flash frequency's narrow the higher you go. So, measure some full range and compare them to some tweeters playing the same frequency's and let's see what's beaming lol. Polar response shows you the narrowing frequency with science not hearsay.
You then go on to say the term wide range is more appropriate than full range. This is blatantly disrespectful to the amazing audio pioneers of the past like Paul Voigt. Once again read my previous post in this thread in 1934 when the whizzer cone debuted, they played the same frequency range as the best speaker systems in the world at that time in the western electric systems 60 HZ to 12 KHZ earning the name full range. And as materials and design improved so did the frequency range of all speakers including "full range" drivers.
Then you talk about the doppler effect that was discovered by Christian Doppler in 1842 it is the perceived frequency of sound or light depending on whether it is moving toward or away from the observer/listener. And it certainly does not cause audible congestion. Congestion is a term to describe a cold not a term to describe sound.
So, what is the doppler effect in a speaker? It is the listeners perceived pitch/frequency of sound depending on the movement of the speaker's cone. Higher pitch is heard when the cone is moving towards the listener and lower when the cone is moving away from the listener. it is also worth noting this effect is subtle very very subtle. This is laughable argument against full range drivers at best why? Well let's see because the human voice produces the doppler effect so do musical instruments and microphones and yes, any speaker ever made that has a diaphragm that moves to create sound produces the doppler effect lol.
And last but not least the no crossover thing having no crossover will not make the speaker sound more vivacious because vivacious is not a term that describes sound. It has been said that a speaker with no crossover sounds more cohesive this was also a term made up by audiophiles not speaker designers. In order for something to be cohesive there has to be more than one so a single driver can't be more cohesive lol. People also say no crossover makes for a more dynamic speaker 100% not true. A speakers BL factor will tell you if it will be average or dynamic how? The BL factor is the strength of the magnet and the resistance of the weight of the cone and the strength of the spider and surrounds. So, a higher BL factor the more reactive/dynamic the speaker.
And last but not least you mention electronic crossovers those are fossilized like dinosaur's People today use DSP digital sound processors. And then you totally lost me and anyone that would read the end of your post when you say " amps that have bandwidth limitation imposed (such as an amp that rolls off below 80Hz or the like). There is no such thing as a home audio amplifier having a limited bandwidth that would roll of below 80 HZ. Sorry but this does not exist home audio amplifiers have very large bandwidths that cover much more than 20 HZ to 20 KHZ many amps will cover from just a few HZ say 5 HZ to 100000 KHZ. I think what you meant to say was to have an 80 HZ cutoff for a sub-woofer like on an integrated amp or audio/video receiver.
I am sorry my response is so long, but it is important to stop the spread of false information. It is hurtful to the audiophile community and my industry to spread untruths. out of all hobbies the audiophile hobby has the most misinformation by far. It seems like pseudoscience is respected more than actual science and even scientific test and measurements. This should be unacceptable to everyone, and we should all fact check information before we post it for all to see and spread it like the plague.
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Follow Ups
- RE: There really isn't a Full Range driver. - seancuster71@gmail.com 22:36:33 12/10/24 (1)
- No-one has ever made a Full Range driver- for real. - Ralph 09:15:59 12/11/24 (0)
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