I made today a few modification at the Tube-I-zator Module.
First i insert receptacle pins for all resistors in the tube stage.
So it´s easy to change the values without soldering if necessary.
Second i changed the Rk & R I/V resistors to my beloved TX2575.
It is really fascinating, what these resistors do to the sound.
The last thing for now are the output caps. I changed to Ampohm 2,2 µF polyester in oil, bypassed by the russian K72P-6 teflon.
Now it´s time to fine-tune the sound with the right output caps....
One thing is clear. This new "Reference DAC" project here, outperforms my really perfect sounding "Big Blue" 4x TDA1541A DAC with all his modifications and with it´s tube-rectifier stage.
So this and the fact that i don´t need two DAC´s is the reason, why i sell my "Big Blue" DAC pcb here!
First i insert receptacle pins for all resistors in the tube stage.
So it´s easy to change the values without soldering if necessary.
Second i changed the Rk & R I/V resistors to my beloved TX2575.
It is really fascinating, what these resistors do to the sound.
An externally hosted image should be here but it was not working when we last tested it.
The last thing for now are the output caps. I changed to Ampohm 2,2 µF polyester in oil, bypassed by the russian K72P-6 teflon.
An externally hosted image should be here but it was not working when we last tested it.
Now it´s time to fine-tune the sound with the right output caps....
One thing is clear. This new "Reference DAC" project here, outperforms my really perfect sounding "Big Blue" 4x TDA1541A DAC with all his modifications and with it´s tube-rectifier stage.
So this and the fact that i don´t need two DAC´s is the reason, why i sell my "Big Blue" DAC pcb here!
Hi Maurizio,
perhaps it make sense, that we make a list for members who want to have the pcb´s.
So we could see if it make sense to start a new GB.
Hi Maurizio,
you need:
2x +/- Power Supply Module
1x Shunt regulator Module for TDA1541A
1x Sunt regulator Module for add. +5V line
4x TDA1541A DAC Module
and
1x output buffe stage, e.g. Tube-I-zator
1x S/PDF to I2S module, e.g. Doede Douma or from Twisted Pear Audio
Best,
Oliver
you need:
2x +/- Power Supply Module
1x Shunt regulator Module for TDA1541A
1x Sunt regulator Module for add. +5V line
4x TDA1541A DAC Module
and
1x output buffe stage, e.g. Tube-I-zator
1x S/PDF to I2S module, e.g. Doede Douma or from Twisted Pear Audio
Best,
Oliver
just solder those TX2575 in there already; you know they are gonna stay
nice dac mate, really like your choice of components. the new KG nichicons are great caps, only beaten as far as lytics go, by the new titanium mundorf. i'm keen to try the new silk nichicons.
i'll be watching this GB to see that ut gets off the ground and grab some of the power supply PCBs
nice dac mate, really like your choice of components. the new KG nichicons are great caps, only beaten as far as lytics go, by the new titanium mundorf. i'm keen to try the new silk nichicons.
i'll be watching this GB to see that ut gets off the ground and grab some of the power supply PCBs
You can use also 8 TDA Modules with the Shunt regulators. The only value that must be changed is the 5W resistor.
Hi Guys, I hope you don't mind me butting in! I normally hang out on the CD650 thread and the CD63 thread. I have a heavily modded philips CD960 (almost the same as Marantz CD94) and I'm interested in a new TDA board so I can fit more PSU's in my player.
Maurizio, in my experience, the more seperation you can give in the PSU the better. Oliver has said that it will work. However, I would be looking to run multiple shunt regs for best perfomance. You could maybe start with 1 then add more????
Regards, Ian
Maurizio, in my experience, the more seperation you can give in the PSU the better. Oliver has said that it will work. However, I would be looking to run multiple shunt regs for best perfomance. You could maybe start with 1 then add more????
Regards, Ian
In your opinion, would individual 'clean' supplies be an upgrade over shared ones?
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.