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Old 15th December 2013, 08:49 PM   #21
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Today I hosted some people who are professional music players.
They really where blown away whit the sound reproduction...
All of them agreed that my audio nirvana full range speakers whrere no match
for this amp. This is the third time I heard something like that.
I know....I need some decent speakers to match the amp...
This will be a nice project for next year...If someone has a nice idea,
let me know...But I dont like lowthers...!
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Old 15th December 2013, 09:10 PM   #22
Zen Mod is offline Zen Mod  Serbia
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Old 15th December 2013, 09:17 PM   #23
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Nice looking Zen Mod!!!
Which drivers do you use? This looks like transmission line??
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Old 15th December 2013, 09:57 PM   #24
Zen Mod is offline Zen Mod  Serbia
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Big Tannoy MLTL for Woland , part 2 …….. (I’m proud ) | Zen Mod Blog
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Old 16th December 2013, 03:46 AM   #25
PKI is offline PKI  United States
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But you put them after horns of OBs ;-)
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Old 16th December 2013, 12:03 PM   #26
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I found something very interesting in my basement.
I have a nice pair of ACR mk4 beton monitor speakers from 1980s...I remember they where very high praised then...from Switzerland.)
They are 6 ohms...So will try them...

I also found a test in magazin...If someone is interested how they
look like I can send a scaned pdf...)
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Old 16th December 2013, 04:26 PM   #27
Zen Mod is offline Zen Mod  Serbia
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>sasica5@gmail.com<
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Old 16th December 2013, 10:03 PM   #28
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Today I powered the ACR beton speakers and was really surprised
how deeep and precise the bass reproduction can be and this from
a speaker 24x40x20 cm size...)
I have a filling that this spekars where waiting to be powered by a great
amp like my SIT is. There is absolutly no comparison to audio nirvana 12inch
driver in open buffle...The whole room is just pictured into a life stage,
everything is breathing...My compliments to the designer Werner Vögeli back then.
The construction of this little beast is very impressive. The enclousure is made of concrete mixed whit some sort of plastic. The woofer is jordan watts (need to find out which one) 4 inch driver. The mid is also from jordan watts and the high driver is an "bendchen driver" and there is a passive KEF woofer membrane at the back of the speakers which is in outphase whit the aktive woofer but sonically perfect in phase..)
I would really want to know more about them, so if someone has them or has more information please let me know!!!

On SIT I used the 7.5 ohm output on the UTC-LS33, so I get a reflected impedance on primary of 40 ohms whit 6ohm speakers. I could use the 5 ohm output on the OPT then I will have 60 ohm on primary...Which is better...good question...Need to try...)
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Old 16th December 2013, 10:08 PM   #29
Zen Mod is offline Zen Mod  Serbia
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porn please

I got that scan , tnx .
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Old 18th December 2013, 03:28 PM   #30
RajkoM is offline RajkoM  Bosnia and Herzegovina
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Quote:
Originally Posted by DIYspaceW View Post

First of all I lowered the driver stage output impedance whit
CCS Mu follower output. Then I changed the cathode resistor and cap whit a
white diode (its a package in SMD whit two dioded in parallel). Forward voltage is
2.9V, so perfect. I get 180V at plate and 36mA current........

To me be clear. With 1Vrms from source, you're pushing around 50Vrms (140Vpp) to Gate of 2SK82. True ???
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