And here is a very cheap....
Hi Generg!
This is an even cheaper solution - but how it will function with noise/isolation I`m not shure.
But cheap - Yes!
TC-200A 200 watts Step Down Voltage Transformer
Best
Olav
Hi Generg!
This is an even cheaper solution - but how it will function with noise/isolation I`m not shure.
But cheap - Yes!
TC-200A 200 watts Step Down Voltage Transformer
Best
Olav
Nothing in parallel. If memory serves, the prototype had a 500 ohm film resistor with a series 100 ohm pot.
I got today the TO-220 Vishay (50W) with 680R as drain resistors
What a difference, a stunning clarity and no more vagueness, no lack of bass.
If you want a near to perfect pre for unbalanced amps I highly recommend it!
Look for a good small heatsink my resistors get fairly hot…..
Maybe I will even buy the Ohmite with the TO-247 case.
Mike you are right it is LUMINARIA!
What a difference, a stunning clarity and no more vagueness, no lack of bass.
If you want a near to perfect pre for unbalanced amps I highly recommend it!
Look for a good small heatsink my resistors get fairly hot…..
Maybe I will even buy the Ohmite with the TO-247 case.
Mike you are right it is LUMINARIA!
Hello Generg....
Think you are on to something now....
But I wonder if you build the Buffer + PreSit? Or only the PreSit without Buffer. And what Trafo did you use - the 2 pieces of 120 Secondary?
Some clues to an old chap here in pre-Summer Norway (who wants a building-project in autumn)! And my FHXL is finished and better than expected.
Please Generg?
Best
Olav
Think you are on to something now....
But I wonder if you build the Buffer + PreSit? Or only the PreSit without Buffer. And what Trafo did you use - the 2 pieces of 120 Secondary?
Some clues to an old chap here in pre-Summer Norway (who wants a building-project in autumn)! And my FHXL is finished and better than expected.
Please Generg?
Best
Olav
Hi buddy,
only SIT no Buffer, my cd player has nominal 47R output.
I used to Chinese trafo with 2x55V I used in Pumpkin some time ago….:_)
I will try to find them….
at the moment I found only this one is enough
NEW Mains Isolation Transformer 100VA 230V PRI. 110V (55-0-55V) SEC. CCM100/110 | eBay
I look…..!
only SIT no Buffer, my cd player has nominal 47R output.
I used to Chinese trafo with 2x55V I used in Pumpkin some time ago….:_)
I will try to find them….
at the moment I found only this one is enough
NEW Mains Isolation Transformer 100VA 230V PRI. 110V (55-0-55V) SEC. CCM100/110 | eBay
I look…..!
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Thanks Generg.....
Hi there again - and that solution was my first thought. I run my B1 up till 3/4 full power on my Alp12P - and that is very good SPL!
But if the SIT-Pre amp is run even up between 1/2 to 3/4 the 5kohm pot will have only a couple of kohm resistance(and maybe lower) - and there will be very good bandwith! I think I have 20kohm on my B1 - so it will be down to about 5kohm when I give 3/4.
Look forward to the build (have to get through some health-thing the next couple days) - before I start ordering things!
Best
Olav
Hi there again - and that solution was my first thought. I run my B1 up till 3/4 full power on my Alp12P - and that is very good SPL!
But if the SIT-Pre amp is run even up between 1/2 to 3/4 the 5kohm pot will have only a couple of kohm resistance(and maybe lower) - and there will be very good bandwith!
I think I have 20kohm on my B1 - so it will be down to about 5kohm when I give 3/4.Look forward to the build (have to get through some health-thing the next couple days) - before I start ordering things!
Best
Olav
Hi buddy,
only SIT no Buffer, my cd player has nominal 47R output.
I used to Chinese trafo with 2x55V I used in Pumpkin some time ago….:_)
I will try to find them….
at the moment I found only this one is enough
NEW Mains Isolation Transformer 100VA 230V PRI. 110V (55-0-55V) SEC. CCM100/110 | eBay
I look…..!
LUMINARIA...! Good news as always Generg
Transformers simple and audio grade :
http://sklep.toroidy.pl/en_US/p/TTS0120-Transformer-TS120VA230-voltage-higher-then-100V/268
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A,
considering your experience I will do it……
L´Amp like, there we had also the two solution with the pros and contras from different people hearing….
I can remember - was there ( L'Amp) choice between degeneration vs. fixed bias or what ....... here is simple choice - either no degeneration due to cap blocking or no! degeneration (at all) due to fixed bias
some of us are hearing that cap in parallel to cathode oups! - source resistor, some don't
just saying that you're one of those who most probably can .....
wake up and make your board, man!
I tried to learn to use those Eagle apps and they have a long learning curve!
Takes too long to learn. Not intuitive enough. By the time I find the correct part, a whole day's gone by.