My analog stage is in action for some weeks now and the sound is better than i could expect. I have put the output through an attentuator, like aleph L, into the aleph 30. I have a coppling cappacitor in the input, i know that its not neccesarry but i had to change the phase because the circuit is unbalanced and so it turns the phase 180 degrees. With the cappacitor its right again.
Now i get the liquit rythm i was missing before and the distance to analog is getting smaller again.
Thank you Mr. Pass for publishing no project manuals from your DAC!
The housing for the pearls are finished too and all the three are at there new homes. My friends cant stop listen to records anymore. A pearl makes even a ortofon T3000 redundant. The sound improvements are the same in every equipment they sound cleaner, nicer with more resolution more rythm and more color. The only point missing is still some more gain. An ortofon MC3000 has just 0.15 mV output. I think about the possibilities for a third gain stage. I dont want to change the power supply, so i dont get negative voltage, thats limiting the possibilities. Maybe DC coppling is a solution, or the easy way another pair of Jfets without cascading, it guessi it could have more gain than 10 DB.
Im also looking for an alternative to the 9Volt batteries, because you never know if they are empty. Maybe a precion voltage source like the LT1019N8-10 could do the work, it has a very good ripple rejection, but its expensive.
The picture show the analog stage as its running. I would like the nice looking Pearls in their housings too, but i havent got a digicam now.
Now i get the liquit rythm i was missing before and the distance to analog is getting smaller again.
Thank you Mr. Pass for publishing no project manuals from your DAC!
The housing for the pearls are finished too and all the three are at there new homes. My friends cant stop listen to records anymore. A pearl makes even a ortofon T3000 redundant. The sound improvements are the same in every equipment they sound cleaner, nicer with more resolution more rythm and more color. The only point missing is still some more gain. An ortofon MC3000 has just 0.15 mV output. I think about the possibilities for a third gain stage. I dont want to change the power supply, so i dont get negative voltage, thats limiting the possibilities. Maybe DC coppling is a solution, or the easy way another pair of Jfets without cascading, it guessi it could have more gain than 10 DB.
Im also looking for an alternative to the 9Volt batteries, because you never know if they are empty. Maybe a precion voltage source like the LT1019N8-10 could do the work, it has a very good ripple rejection, but its expensive.
The picture show the analog stage as its running. I would like the nice looking Pearls in their housings too, but i havent got a digicam now.