• Disclaimer: This Vendor's Forum is a paid-for commercial area. Unlike the rest of diyAudio, the Vendor has complete control of what may or may not be posted in this forum. If you wish to discuss technical matters outside the bounds of what is permitted by the Vendor, please use the non-commercial areas of diyAudio to do so.

DAC-ASH (dac-end 2 up date)

Status
Not open for further replies.
Jump to Latest
#162
So the transformers that I need for a complete DAC & IV board would be:

DAC
-------
R26-29 primary 115 X 2 : 0-9 X 3(0.7A); 9-0-9(0.7A) X 2


IV - Filament
-----------------
R26-93 primary 115 X 2 : 0-9 (1A) X 2; 0-9 (2A) X 1


IV - SSHV
-------------
R80-36 primary (0-110) x 2 /SCN: scondary (260-230-0-230-260)(90mA), 2.5-0-2.5(3A), 3.15-0-3.15) X 2(3A) X 1



Are these correct? Thanks.
 
#163
pathetic said:
So the transformers that I need for a complete DAC & IV board would be:

DAC
-------
R26-29 primary 115 X 2 : 0-9 X 3(0.7A); 9-0-9(0.7A) X 2


IV - Filament
-----------------
R26-93 primary 115 X 2 : 0-9 (1A) X 2; 0-9 (2A) X 1


IV - SSHV
-------------
R80-36 primary (0-110) x 2 /SCN: scondary (260-230-0-230-260)(90mA), 2.5-0-2.5(3A), 3.15-0-3.15) X 2(3A) X 1



Are these correct? Thanks.
Click to expand...

You need 2 Transformator R26-29 using the 2 x 3 x 9V/0,7A for DAC

The R80-36 you use 230V -0V or 260V - 0V por SSHV
and 2,5V -(0V) -2,5V with 3,5V -0v in serial =8,5V for filament

Klaus
 
#169
Is there any assembly instructions or testing manual available? I'm not sure if there's any wire links or connections that I've missed out. I can read the circuit diagram but its very difficult to follow the trails on the PCB to make sure everything is correct.
 
#172
Thanks, this seems to be the consensus although John Swenson wrote on AudioAsylum that he noticed a huge improvement after inserting an FPGA that aligned the to channels the half sample they are off. Wish I had 1/10 the skills of that guy.
 
#173
My friend has a complete DAC-ASH
 

Attachments

  • DAC-END2.jpg
    DAC-END2.jpg
    142.6 KB · Views: 613
#176
Just finished the build. Took me quite a lot time but the result is very satisfactory. So far my most favorite DAC. Much prefer it than my last Buffalo32s. Very smooth, lush mids, bass is deep as expected. Treble might depend on the tubes used. I'm currently using the Siemens E88CC gold-pins.

5131338861_b771804e3e_z.jpg


5131342141_fbcc69ebf3_z.jpg


5131945088_15400f65c2_z.jpg


5131955520_a0a66fdbdf_z.jpg


5131946572_120b29bbc8_z.jpg


5131948286_ae4d4456cf_z.jpg


5131349413_60cf8dc945_z.jpg


5131951868_8848c54296_z.jpg


5131352823_96bd350f92_z.jpg
 
#178
I'm starting to regret building this DAC as there is no longer any support in answering my questions. From incomplete BOM to lack of guidelines and instructions. Not everyone is an expert in DAC building. I hope to eventually get mine working, otherwise it would be a complete waste of $500.

What I've resorted to do is to actually trace each path on the PCB and since it differs from Andrea's original design and component values, its proving to be very difficult and time consuming.
 
#179
pathetic said:
I'm starting to regret building this DAC as there is no longer any support in answering my questions. From incomplete BOM to lack of guidelines and instructions. Not everyone is an expert in DAC building. I hope to eventually get mine working, otherwise it would be a complete waste of $500.

What I've resorted to do is to actually trace each path on the PCB and since it differs from Andrea's original design and component values, its proving to be very difficult and time consuming.
Click to expand...

What i can have you now??
thanks!
 
Status
Not open for further replies.
Top Bottom