Choky Susy F3 for LU1014's

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#161
In case something is rotten, it has to be in Svenskeland, as that's where I've heard them.

They did take a 3rd. place in a loudspeaker design competition though, just not my cup of tea, and even the Mrs. did not like them. It takes quite something before she will announce something like that, when not asked.



Magura 🙂
 
#164
#167
It will certainly increase your "Carbon Footprint".....😉

Beautiful work 😎 and the devil is in the detail, of course another devil is cross at the low and comfortable temperature! ...if only that devil would test the detail he would indeed be surprised!!😀😀
 
#176
Hmmm, I've come into ownership of some 625 VA dual primary torroids. I might have to do a bit of reading about how much inductance the choke load needs to have 🙂 I've the lu parts on hand too, and a pair of 4ru cases... This feels like divine co incidence... 🙂

Actually, I've quite a few of them, I could parallel them for more inductance? Hmmmm
 
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#178
:blush:

Thank you Zen Mod. Less indeed. :blush:

Do you by chance have any suggestions on minimum inductance for the choke load? I saw the ever amazing Donut thread stated the bloody enormous air coil came in at 90mH, NP discusses various VA's of transformer's he used (300VA and 1.5kVA), and I recall seeing a pair of 1kVA transformers that you had hold of in some thread somewhere. The transformers I have come in at 0.3H or so per primary, so I'm trying to work out if they are suitable.

Now i'd better go back to reading my old textbooks so I don't make that sort of mistake again 🙂
 
#179
do not worry , brainfart is my permanent state 😉

regarding calc ..... what you need is something having same ( inductive) impedance as load (speaker , usually ) at no more than few Hz

so , just find formula for inductive impedance , toss 8R in it and keep fingers busy
 
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