Continuo from here ;
Still without measurements , just playing with data from various web sources , LTSpice and bunch of parts
Almost everything I had on my previous small web site
As previously written here : Big Tannoy MLTL for Woland ;
Box design and calc by Mighty ZM , box production by Woland’s local Wood Meister .
Presentation thread , after first listening impressions is at Baby Diyaudio .
For non Serbian-speaking , just use translate function in Chrome , or go to this , already translated , page : Translation .
So – if you can’t have proper horn ……. or OB doesn’t cut for your room or ears , go for MLTL
😉
Few day’s work ; reason for operation was – broken ends , due to too much manipulation (they aren’t exactly made flexible …. while still fragile )
Intention was to dismantle them , without ruining end stickers ………. ya can call me enthusiast 😉
However , thin foils are better …….. to my ears
Btw. – main stickers ( at fork ends ) are having arrows , as that cables are “directioned”
I couldn’t see any fact for that , in their construction
…..and , yes , they aren’t mine …….
K3809 as main driver , K3833(K3836) as bass helper
K3809 are mine , while K3833(K3836) , stars of previous blog entries are prepared for SuperFi’s Westminster project .
Just having fun with some old OB “wood” , gift from Chakija ( he’s not feeling young enough to continue playing with them 😉 )
Disclaimer – I really wasn’t expecting real bass ……. that’s max width I can squeeze in living room , where spks must be situated ; also , MJK OB software didn’t predicted it (bass)
But !! – there is bass , at least in my smallish living room ; sound is remarkable , even with crude and quick xover , without any efforts put in measurements and polishing of same ; OB is far from optimal in almost every area , but it is so fun …..
I had them for some short time , just to make vivisection , clean the switches ….
I was really surprised how plastic coned 2528 is good ……. 😉
Of course , as always with any new driver to me, I tried them baffle-less and I’m primarily basing my impression on that ; that was main reason why I , later , urged my Vladimir to try them , as cheap and easy way for trying Audiophile Retirement 😉 http://www.zenmod.in.rs/loudspeakers/tannoy-2520-mltl-box-for-ar2/
Data for coils :
marked 0,2mH – measured 0,2mH – 0,43Rdc
marked 0,8mH – measured 0,827mH – 0,47Rdc
bass coil :
tap marked 0,8mH – measured 0,83mH – 0,33Rdc
tap marked 1,5mH – measured 1,54mH – 0,51Rdc
tap marked 2,5mH – measured 2,6mH – 0,78Rdc
0,2mH coil – air cored
both 0,8mH and bass (2,5mH) coils have ferite powder cores
