Most Greedy Boy, of them all... or (there is no) DEFiSIT of Papa's Koans

[Chul]

Would not send my baad Altecs even to my worst enemy. Will lock them up in my cellar to keep sensitive audiophiles and innocent bystanders out of harms way 😀

I think I see what you mean. I got my Altec just before this DEFiSIT fun and I don't regret.


@Zen Mod

I replaced the THFs with other THFs and Vgs are now -1.6 and -2.1. I think I just have to settle with these. I do not complain. 🙂

 

[Zen Mod]

no need to complain

anyone needing article from Sound Practices , with Hiraga's xover for A7 , just shoot me an email to >zenmodiyaudio@gmail.com<

Altec is Altec is Altec ........... except that bloody coaxial , that one is little different

 

[CeeVee]

quick glance on U-I graph is showing that thingie can be squeezed in M2-like circuit ...... back of napkin calc is predicting that there is volt or so of space between gates, where we can squeeze transistor part of optocoupler

that's on paper ; for developing thing in vivo , one needs to have Tokin , rest of parts , decent measuring setup and plenty of time ....... mostly to play with values of source resistors ...... to achieve best tempco behavior ( OK - optocoupler is really magical part there) and adequate THD spectra

I don't have Tokin , and always lacking in time 😛

...oh man am i glad i brought this up....

Need to measure the 4 ( i think ) critters i have.....all the way from japan they came!

 

[Zen Mod]

and luckily - indra found those Halls in a meantime ....... 🙂

 

[Zen Mod]

hey , not so bad , for less than year time ....... two funny amps so-so finished, and 4 more waiting in line

 

[CeeVee]

table handy to have everywhere

sorry , dunno who originally made it

edit: as I understand it , to Vbias written in table , you need to add voltage sag across 1R in source , to have effective Ugs
editedit: oh , yes , there is , in lowest row

..from Pascal Nguyen !

🙂

 

[Zen Mod]

you Sir , are having gift of remembering !

Moi , Sir , they took that off of me when I was born ....... so I'm hoarder , by necessity

 

[CeeVee]

you Sir , are having gift of remembering !

Moi , Sir , they took that off of me when I was born ....... so I'm hoarder , by necessity

..for all the great audio drek you create ...i can easily forgive that.....

 

[Zen Mod]

I just don't like musical compilations , great exception being Decade of Neil Young

however , sometime I stumble on great compilation ....... right now SissySIT playing nicely CD named "Italian Jazz Today", conveniently named by publisher - Musica Jazz , Italian paper mag , which I used to buy occasionally


I know that cd damn well .... and 'talian guys are generally great jazzers , besides other tallents they have

boy , it sings

🙂

Papa is UberFunny guy

 

[kbergsson]

The Sound Practices collection is on my shelf. Except one magazine, which I loaned out and was never returned 🙁
I have Hiraga inspired xovers for the A5s and they are good but I prefer simple Werner Jagusch filters which use autoformers to match levels. Have also used WJ xovers on my coaxes.

no need to complain

anyone needing article from Sound Practices , with Hiraga's xover for A7 , just shoot me an email to >zenmodiyaudio@gmail.com<

Altec is Altec is Altec ........... except that bloody coaxial , that one is little different

 

[Zen Mod]

I'll reply to your e-mail and Chul's when I get back home , to other PC

feel free to point me to, if there is any , online place where I can read more about WJ's work ; always good to learn new things

Chul , this thread is good as any , to share your experience with freshly acquired amp

 

[kbergsson]

@ZM there is not much to read on WJs creations, and whats there is scattered around different fora ( comments from users of his xovers ). Here is a link to his ebay store. There you can get some info. mast_mutter on eBay

 

[Zen Mod]

that's some nicely looking stuff

I like good quality cores

 

[kbergsson]

I had tried a couple of different diy xovers on my Altec 604s and was never happy until I got Werners xovers. They transformed my coaxes for the better. When I got the opportunity to exchange an old Leben tube pre for A5s with the 1505b horns I sent my 604xovers back to Werner and he made new xovers that are configurable for my 604s and the A5s and also support a tweeter. I use some old and battered JBL 075 alnicos as tweeters ( they where pulled from some electric organ -I think).

 

[Zen Mod]

porn , or I'm declaring that as pure Viking ......... fairytales

aha , regarding amp :

Honey , I created a Monster

real proper name , SissySIT , ∀ Class amp

 

[Zen Mod]

btw. , are you familiar with this : 6moons audio reviews: Stephæn's Altec 604 Dream Speaker

speaking of that simply because , after all these years , my preferences for speake rboxes are :

1.horn , then
2.OB, then
3.TL

as far as I'm concerned , BR and compression box are non-existent

besides that , I'm puzzled with their xover , even if I really don't have Altec 604 , nor I think to ever invest money in another pair of speakers

 

[kbergsson]

I tried a similar xover to the one Stephæn uses and was not happy enough 🙂
The Dungeon 😎
Pre pass pictures. 300b on top of A5s. Hiraga and WJ xovers. Sets of old pp monoblocks to the left. DIY 3 arm lenco, old picture of 604s. Fairies are dangerous.

 

[kbergsson]

My jbl 075s, upside down - apple photos 🙂
Was that porn enough ZM 🙂 ?

 

[Zen Mod]

like your **** ,man

Fairies are the best , Viking ones or not

 

[Zen Mod]

those **** are Drek , what else 🙂

and , you suck with graphic