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would correct his thinking if he sits in front of a 3 inch driver and listen to Bob Dylan's Nashville Skyline when Dylan sings and J Cash comes in with his deep wavering voice. How did a 3 inch driver catch this difference so exactly. What will JA One find during his tests. God made that driver do it exactly, no speaker designer.This has made me a believer in God. Will make RB a believer too. God is every where, in cones magnets, eelectricity.
Bill
Follow Ups:
And take it apart. Take the speakers out without disconnecting the wires. Without messing up, splice in simple thin wires, of however many feet, so you can put the speakers -- the actual cones, just the speakers -- anywhere you like.Hang them from a hoop a bit larger than a hula hoop. Put a tape in the boom box. Sit in center at cone level and tell me you can't tell Cash from Crosby.
/ optimally proportioned triangles are our friends
Edits: 12/16/24
Please no religion or politics in public forums its offensive please stop. Thanx.
You should visit the "No religion or Politics" forum called "Central" sometime...Bill the K is a normal guy.
Edits: 12/03/24
Part of what gives a loudspeaker it's "sound" is how it radiates, for example, take two loudspeakers with the same spectral balance, one is easy to guess how far away it is with eyes closed, the other not.
What governs that radiation? Quality of driver but is it a blind shot?What exactly can a designer do. Like some doctors having God's grace in their choice of treatment, some speaker designers are blessed. How come Henry Kloss designed such great speakers. There is still a lot of mystery in the world of speakers.
Regards
Bill
to help illustrate Tom's scholarly answer. First of all, I find this calculator helpful to determine the frequency of a given wavelength.Good practice is limit upper frequency of a given driver by piston size wavelength. Since you cited Henry Kloss, look at the New Advent's woofer. While nominally a 10" design, the piston size is about 9" which is about 1500 hz. Guess the crossover frequency!
Bad practice is exemplified by 70s era JBL three way bookshelves like the popular L100 Century. It uses a 5" midrange with nominal piston size around 4" which relates to about 3400 hz. Wanna guess how far they ran that driver ? 6 kHz! What that meant was instruments that spanned the top end of the midrange driver with harmonics in the tweeter possessed a weird funhouse mirror effect in terms of apparent soundstage width. Dispersion clamped down at the top of its range only to be mated with a 1" dome sitting in its sweet spot with wide dispersion. Talk about discontinuity in a range sensitive to our hearing! Sin of commission.
Under Floyd Toole's watch, later versions of that speaker like the LSR6332 using identically sized drivers lowered the upper range of both the woofer and midrange by more than an octave to get them back down in a comfortable range for consistent radiation.
Full range dynamic drivers typically break that rule but at least they let the upper frequencies narrow without shining a spotlight on the challenged response. The ceiling mounted 8" full range drivers used in our around the house system don't have the most extended top end response but don't call out to themselves. Sin of omission.
A primary reason I've been a full range electrostat fancier for decades is because of their uniform character that sounds more like real instruments to these ears. BTW, Tom's Synergy horns are unique in that while they are multi-way, all frequencies radiate from the same "mouth" for consistent radiation. Here's an SH-50 as an example:
What I find interesting is the similarity to his approach and Dr. West's electrostats. Both offer multiple full range controlled radiation angle models and are designed to be configured in arrays to increase vertical or horizontal coverage.
Edits: 11/21/24 11/21/24
Not super expensive but outside of my reach. I love the design, would like to find out how they sound with a decent amp...
but they require subs and take up some space!
Gosh, part A is acoustic size, how large is what ever it is compared to the wavelength being produced.
The problem here is there is a 1000:1 difference in size from 20Hz to 20KHz.
You can figure the wavelength size in inches using 1132ft/sec X 12 inches / the frequency
For a simple piston source, one finds that if the diameter is 1/4 wavelength or less, it is an omni source, radiates equally in every direction.
As the frequency climbs and the WL is smaller, when it is about 1 WL across, the radiation pattern has narrowed to around 90 degrees forward. going higher in frequency, the radiation patterns is one of lobes and nulls across the front.
It is the complex radiation that your ears use to locate the physical distance by ear and makes the speaker "stand out" as sources in stereo where a center phantom image is desired.
There is a lot of mystery, some in the aid of sales but also a great deal is known.
Thank God I am an atheist.
I use EJ Jordan drivers.
4" full range
7" bass
The little driver of Tivoli One Radio.
I would like to know how that driver differentiates voice between Dolly Parton and Janis Joplin. Which test can show this ability. Perhaps God knows.
Bill
Initial research at Bell Labs determined that voice recognition required 300 to 3K frequency range. That was years ago but should not have changed. So a decent 3" driver should cover that.
"The secret of life is honesty and fair dealing, if you can fake that you've got it made." Groucho
"Buzzzz-bzzzzz-bzzzzz-bzzzzzz-haw-yupp !!!"
So, sure. A 3" driver might do just fine...
LMAO. The first time I heard him, on the radio, I thought it was some kind of a joke. He may have written some good songs, but he sure couldn't sing them very well.
LowIQ
I am amazed at this little driver differentiating between the voices as different as L Amstrong, Pavarotti, Joni, Dylan, Cash et al. Which test shows this ability in the reviews.
Bill
The smaller still drivers found in my Shure se535 IEMs are quite transparent. :)
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