Choky Susy F3 for LU1014's

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#63
95dB good enough?
Actually he made several high efficiency designs.
http://www.troelsgravesen.dk/JA8008_DTQWT.htm

Troels had to admit what a proper pair of woofers means for the sound when making the ones in the link, which he says is his best ever..

Luke;
My ProAc's are the 2.95 version of Troel's. Check out his Clone papers.
I am sure the Orions sounds great, BUT they are active😱

BTW still looking for a Highend project.

🙂
 
#64
steenoe said:
95dB good enough?
Actually he made several high efficincy designs.
http://www.troelsgravesen.dk/JA8008_DTQWT.htm
My ProAc's are the 2.95 version of troel's. Check out his Clone papers.
Troels had to admit what a proper pair of woofers means for the sound, when making the ones in the link, which he says is his best ever..

Luke I am sure the Orions sounds great, BUT they are active😱

BTW still looking for a Highend project.

🙂
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that's serious stuff ;

completely to my taste - bass cab TQWT ( so - sorta TL ) , with enough muscles (read - size of cone(s) ) ;
main driver big enough - 8" , because there is no serious voice coming from spk if you don't have enough Sd
nice and potent tweet with WG ;

as yanks use to say ...... there is no substitution to cubic inches 😉

sensitivity isn't everything , but combined with Volume ....... almost certain recipe for real and serious fun
 
#66
steenoe said:
Hey ZM, those speakers even have 2 x 10" each. Check out the rearview😉 I bet they can shout in a loudly fashion.

🙂
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yup - I saw these 2 10" on back ;
Troel sez
construction with two 10" bass drivers added, providing a total membrane area exceeding a 15" driver.
Click to expand...

anyway -- what I'm trying all the time to say ( pretty clumsy ) he wrote pretty clearly :

In many ways life gets easier when we make big speakers. We may have more and bigger drivers and distortion may all of a sudden be reduced significantly because none of the drivers have to move much to produce high sound levels and we don't have to rely on drivers being capable of large cone excursions either.
We may all have experienced a 6" driver being driven to high SPLs and doing its best to pump air in order to produce deep bass notes - and at the same time trying to produce a smooth upper midrange/lower treble, the 640-2560 Hz range. It's not ideal but a compromise most of us have experienced. As long as we don't push a "six + one inch" too hard, things go well.
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didn't checked exactly rest of the page , ( later this evening I will ) , but - if I say that Volume is difference between spks , when one speaker is reproducing ( for instance ) grand piano as small one ...... and another speaker is reproducing the same as proper size grand piano ........ I always know where my heart is .

it is not necessary in connection with SPL or even pinpoint imaging ;
you know pretty well that we don't have these things in vivo , in fact not in amount often needed for FiFi mumbojumbo establishment .
 
#70
steenoe said:
95dB good enough?
Actually he made several high efficiency designs.
http://www.troelsgravesen.dk/JA8008_DTQWT.htm

Click to expand...


95dB is just fine, but 150L boxes, is not ok.

I do like music a lot, but I sure prefer to keep the WAF reasonably high....after all it's more fun to keep stuff like that within reason, and keep the wide hipped one happy.

Come to think of it, even I don't want that big speakers in the living room.


Magura 🙂
 
#71
Is this close to what you're designing, Magura? I've been working on this for several days when I came across this thread.
 

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#72
Magura said:



95dB is just fine, but 150L boxes, is not ok.

I do like music a lot, but I sure prefer to keep the WAF reasonably high....after all it's more fun to keep stuff like that within reason, and keep the wide hipped one happy.

Come to think of it, even I don't want that big speakers in the living room.


Magura 🙂
Click to expand...

You don't want your amps to be bigger than your speakers, do you?😀 I know your amps are as large as a Rolls Royce jet engine. :bigeyes:
 
#73
carpenter said:
Is this close to what you're designing, Magura? I've been working on this for several days when I came across this thread.
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Woody - you don't have much benefit of cascode modulation , when going symmetrical .
you can freely toss these modulation parts out .

besides that - what's use of these bunch of 0R220 , near gnd ?

they're too small for any practical benefit , if I see them correctly - as sort of Tail in LTP .

edit - just forget question regarding these resistors ..... they're obviously here for same modulation I saw ........
tired eyes ........ or is brain ......... ?

:rofl:
 
#77
Blues said:


You don't want your amps to be bigger than your speakers, do you?😀 I know your amps are as large as a Rolls Royce jet engine. :bigeyes:
Click to expand...


Naah, it's ok to have speakers about twice the size of the amps 😀

On a more serious note, some 80L speakers is about as big as I can consider acceptable in a living room.
Bigger than that, and it's time for a dedicated audio room.

The Abby clones I have now, are tall and slim, and not another square box, which also helps.

They offer most of the qualities I consider important, given the right amp.


Magura 🙂
 
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