Yesterday I measured the voltages on the LP38798 in my 004.
Input is : 4,1V not 5V
Output is : 1,2V
Input is : 4,1V not 5V
Output is : 1,2V
Did you allredy notice a sonic difference going from 1,2 to 1,3V ?Yes, I could do it, for example it's better like this:
R1= 1K5
R2= 91R
Or even lower values?
Luckily that is very easy to adjust, it has an adjustable multiturn resistance for the negative voltage and another for the positive voltage. You should set them for -15.5v and + 15.5vMy analog power rails are off balance, any way to balance? One channel 14.7 and other one is 15.4v
I have little to hear it, "I had the 2 engines in the pits, outside the car", they are already installed and clean, now I will also install a CCHD-950X, and a new cooling system for the two 9038pro.Did you allredy notice a sonic difference going from 1,2 to 1,3V ?
Thanks for answer! Runs perfect now 15.5 - 15.5 !Luckily that is very easy to adjust, it has an adjustable multiturn resistance for the negative voltage and another for the positive voltage. You should set them for -15.5v and + 15.5v
Looks OK, the sense input bias current of the Lt1763 is below 100nA either chosen set of values will work.I think that's fine, how about you B0bb?
Hi! I have few capacitors leftover, 6 Amtrans amco 0.22uF and 4 Leclanché Signal path tin foil. also 0.22uF.Looks OK, the sense input bias current of the Lt1763 is below 100nA either chosen set of values will work.
The overall lower resistive divider values you proposed has lower impedance which provides lower thermal noise
You are using the WIMA polyproplyene (PP) caps in your DAC.Hi! I have few capacitors leftover, 6 Amtrans amco 0.22uF and 4 Leclanché Signal path tin foil. also 0.22uF.
Anywhere i could use them in this DAC?
Good job and congratulations !I finally got it, the noises have disappeared I don't want to say it too loud because it has cost me sweat and tears. Now it's time to enjoy the music alone, here there are no treble or bass ... only real music, this is on another level, I have some details to finish the play, but now I need to rest, stop and listen for a while and see If the burnout of the clock can still achieve greater realism, this may be the end of the road until a chip superior to the ES9038PRO is invented.
Analog recordings such as the voice of Esther Ofarim "Una matica de ruda" DSD64 are of unusual realism.
The string instruments in song number 14 "String Quintet in C, Op.30 No.6" from the "Master and Commander" cd 44.1khz, are here in my room.
Thank you all for your help and wise advice.
ThanksGood job and congratulations !
I notice that you've replaced the Accusilicon XO.
How did you mount the CCHD-950X ?
The CCHD-950X pad is not far enough to reach the eyelet/donut, do you have wires underneath the pads ?
Thank you b0bb. I will try to use them in my speakers or power amp boards.You are using the WIMA polyproplyene (PP) caps in your DAC.
The existing caps you are using are already good.
The Amtrans is made from PET, a worse performing dielectric.
Leclanche is just another PP cap, benefits are incremental over your existing caps,
It is better suited for high power applications like a speaker crossover.
It is too big to fit under the board, you have to decide if it is worth the risk of desoldering the existing caps.
Bigger is definately not better for the DAC in this instance.
In my GEN1 equal to the 4.1v input of the LT1763, its source of that voltage is the central LM317 regulator, in my case a low noise module that substitutes it.Yesterday I measured the voltages on the LP38798 in my 004.
Input is : 4,1V not 5V
Output is : 1,2V
I listened to the Musetec 005 with my critical listening music, and kept switching back and forth between the 004 and the 005.I have little to hear it, "I had the 2 engines in the pits, outside the car", they are already installed and clean, now I will also install a CCHD-950X, and a new cooling system for the two 9038pro.
By the way, what do you think of Musetec 005, could you describe its sound with respect to LKS004?