Always A Good Reminder

[MylesBAstor]

[Alrainbow]

No wonder guitar is so fast on my system it's tweeters and mids my mids cross over at 70 hertz

[MylesBAstor]

The interactive version.

[squasher]

Fascinating chart, thanks for posting.

What are the differences in the colors for each instrument band? (red, yellow, black?)

[Madfloyd]

You could see that on the interactive version: red is fundamentals, yellow is overtones and black is breath/air

[MylesBAstor]

Thanks Ian! I think it's interesting to correlate what we refer to the breathiness of singers read here Dusty Springfield on "The Look of Love" and frequency range. Note that breathiness of the original pressing is lost or greatly reduced on many reissues. Funny thing about that. Listen to the CR reissue and it doesn't sound bad. Until you hear the original and realize what was lost from Dusty's voice.

[MylesBAstor]

Gary Koh had some interesting insights back in 2014 on what are actually the midrange frequencies in speaker designs.

"It seems that the topic of "where's the midrange" comes up again and again. It's something that recording engineers understand perfectly (I would hope so anyway!!) and some audiophiles can't seem to get a grasp on because I get challenged on this all the time.

Because many 3-way loudspeaker designs have their midrange crossover to operate from may be 500Hz to 2,000Hz, audiophiles think that the midrange of music has to be there. Another tells me that the range from 120Hz to 450Hz is "not very important" so you won't need the best (most expensive) transducer for that range.

I'M SORRY! Middle C is 261Hz - based on modern standard concert pitch. Where does the pianist mostly play? His left hand in the octave below middle C and the right hand in the octave above middle C - from 130Hz to 522Hz.

Female vocals show their fullness at around 240Hz, but what is very important is that presence and recognition frequencies are from 2kHz to 4kHz. That's why a good midrange driver that covers both the fundamental frequencies as well as the presence frequencies of the human voice adds so much to the "attractiveness" of reproduction.

The "Warmth" frequencies are from about 130Hz to 230Hz and "fullness" brings that up to about 500Hz. So, in my design philosophy, I don't want to put a crossover at 250Hz. That would substantially split a piano in two. While it can be done, why split the right hand and the left hand of a pianist across two drivers unless you cannot find or design one driver that can cover that range? A crossover there also makes a cello sound like two different instruments.

This chart comes from:http://www.independentrecording.net/irn/store/irn/fcp.php
Mouse around the chart linked for lots of useful information to understand how the numbers relate to the music you hear.
They sell a professionally printed 24" x 18" poster of it that would look great in any listening room."

Thanks Gary!

[Alrainbow]

My infinity IRS v has a three way cross over
70 hertz variable and 4500. So the mids handle all of what GARY posted.

[Alrainbow]

GARY seems to know and is willing to share more knowledge about audio and making devices then anyone I know. It's no wonder all he makes is world class.
Thanks for all you do GARY

[MylesBAstor]

+1

[Alex Siufy]

Cool! Bought one of the posters for the store


cheers,
alex

[chrisfromri]

Great Chart - THANKS!