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What you can say about lowbass and midbass perfomance for high end loudspeakers ?

i listen Egglestonworks Viginty  and find out the play increadable bass performance , especially punch bass
The company claim the two 10" woofer working as  passive sub with cross point 100Hz, and 2  6" midwoofer is
responsible for midbass get very good punch bass,  They say to produce good bass the need to split bass, becouse  
low base woofers get big moving mass cone , and work poor for punch work (too heavy )  Do anybody agree?
But this issue can be find in big speakers with 10"-12"woofer, For small floorstander is not applicable
128x128bache
prof
3,471 posts
 
erik,

IOW, I agree with the approach, but the explanation is an urban legend which hides a series of more complicated issues.


Wait! Are you saying the explanations audiophiles often believe on intuition are often inaccurate?

Say it ain't so ;-)
audiokinesis
2,737 posts
 

@bache wrote: "I agree,, except one thing, like i say before, To get low bass like 30 -40 Hz using Omega Pro 15" woofer you need box very big 5-6 Cubic Feet . You can listen nice bass with smaller enclosure , but never get really low bass."

Very true!! High efficiency + deep bass = HUGE box!

In my opinion one possible solution is to design the system with subwoofers in mind from the outset. Only about one cubic foot would be needed for the Omega 15 (and a protective high-pass filter would be optional unless you want to go north of about 118 dB). You could then tailor your subwoofer purchase to your budget and room and SPL needs.

Duke

bache's avatar
bache OP
520 posts
 
I start  my discussion with my feedback Egglestone work.
They do split bass job and achieve nice midbass -punch bass. 
Low bass also very good except one small issue. not enough control
bass is boomy in low octave . Why ?  My explanation is - they use
110 Hz  crossover point, to get this , they need to use a very huge
 coil  about 15 mh.  or more .  this coil get big resistance 0.5-0.8 ohm
100 times more them expensive speakers wire. The active low woofer
Module (subwoofer) is the good idea, But some company in marketing
purposes don t want to do this.
phusis's avatar
phusis
1,196 posts
 
In accordance to the above would like add my preference for pro-type woofers. Some designs like tapped horns require of the moving mass not to be too low, yet at the same time have a demand for very high motor force. My main speakers use a 15" "old-school" driver in a folded horn with a cone mass of just over 70 grams and relatively small voice coil of 2," whereas my upcoming pair of tapped horns will use a 15" B&C driver (15TBX100) each with a 4" voice coil and mms and BL factor of just over 160 grams and 25.5 Txm respectively. The force multiplier of the B&C unit in such a tapped horn is about ~2.2, but in actual performance sits near 4. They take up space, admittedly - about 20 cubic feet per cabinet.. 
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