BeerCan said:
Put me down for one also, and I have a pair of ad1865 chips so now you can make 9.
I would rather not have an output stage on the dac board if possible.
hi stone,
sure, I can. I will count to U.
BTW, iF I confirm to produce this DAC. This will totally can product 9 sets. would U care post your pair to me to match for one pair to U with all the chips on my hand.
thx
thomas
sure, I can. I will count to U.
BTW, iF I confirm to produce this DAC. This will totally can product 9 sets. would U care post your pair to me to match for one pair to U with all the chips on my hand.
thx
thomas
hi stone,
let me funish the non-profit 1541a project first,
the signal selection board & power supply will fit all the coming ultimate ver.3, parallel 1541a V.4, parallel 1865 & coming 20bits.
All the dac will funish products.
this will less some money for diyers.
I will keep forward the detail of ad1865 condition to U, pls wait a bit.
thx
thomas
let me funish the non-profit 1541a project first,
the signal selection board & power supply will fit all the coming ultimate ver.3, parallel 1541a V.4, parallel 1865 & coming 20bits.
All the dac will funish products.
this will less some money for diyers.
I will keep forward the detail of ad1865 condition to U, pls wait a bit.
thx
thomas
Hi,
Ultimate 1541a ver.3 will start to supply to market on august.
first set will 20set.
include two power tansformers.
USB input signal selection board. will not follow with chassis.
tinclude chassis wil too heavy.
This Ver.3 will fully funish DAC by my production line. buyers who buy my ver.3 had problems will one exchange one within half year. (6 months).
thx
thomas
Ultimate 1541a ver.3 will start to supply to market on august.
first set will 20set.
include two power tansformers.
USB input signal selection board. will not follow with chassis.
tinclude chassis wil too heavy.
This Ver.3 will fully funish DAC by my production line. buyers who buy my ver.3 had problems will one exchange one within half year. (6 months).
thx
thomas
How much for a set if I am in Hong Kong. What other item/part I need to buy beside the chassis/connectors to make it a working set?
Regards,
Spencer
Regards,
Spencer
hi spencer,
only need a chassis, since the isolate power tranbsformers (2pcs) will mount into the PCB, U only need the chassis to fix the dac will Ok. ver.3 is a fully funish set.
thx
thomas
only need a chassis, since the isolate power tranbsformers (2pcs) will mount into the PCB, U only need the chassis to fix the dac will Ok. ver.3 is a fully funish set.
thx
thomas
Step by Step Instructions for Beginner?
Does anyone have step-by-step hookup instructions for the v2 Dac? I want to hookup the dac/receiver pcb to the tube buffer (the tube buffer is already built), the transformers and iec, etc. I have Thomas's stock chassis.
Don't intend to hookup the op-amp output board nor reclocker at this time. I can read the schematic but don't know proper sequence of wire connections. Assistance much appreciated! Thanks, Mike javascript:smilie('
')
smash
Does anyone have step-by-step hookup instructions for the v2 Dac? I want to hookup the dac/receiver pcb to the tube buffer (the tube buffer is already built), the transformers and iec, etc. I have Thomas's stock chassis.
Don't intend to hookup the op-amp output board nor reclocker at this time. I can read the schematic but don't know proper sequence of wire connections. Assistance much appreciated! Thanks, Mike javascript:smilie('
')smash
instruction for beginers
I'd be very thankfull for the instrictions for the beginer too.
Thank you!
I'd be very thankfull for the instrictions for the beginer too.
Thank you!
Help with Transformer Wiring
I would appreciate guidance on how to hook up the three transformers!
I have pdf'd a picture (see below) of the three transformers that show the number and color of each wire. I have numbered the wires.
I am in USA using 120 volt. I want to hookup the tube stage, but not the op-amp stage.
Could someone please assist in guiding me where to terminate each wire....which pcb, iec, chassis ground, etc.
Any help greatly appreciated
🙂
I would appreciate guidance on how to hook up the three transformers!
I have pdf'd a picture (see below) of the three transformers that show the number and color of each wire. I have numbered the wires.
I am in USA using 120 volt. I want to hookup the tube stage, but not the op-amp stage.
Could someone please assist in guiding me where to terminate each wire....which pcb, iec, chassis ground, etc.
Any help greatly appreciated
🙂
Riotubes
Each trans has 2 primary winding. If you have 120V power you will only need one primary (1 red and 1 brown). As each trans has 2 red and 2 brown you 'll need a multimetter to check which red goes with which brown then select one pair of red and brown to connect to main socket.
Black wire is for earth connection.
8, 10 and 9 (18-0-18VAC) should be connected to SK1 on the DAC board. Attention, 10 should be connected to center point of SK1.
16, 18 and 17 (230-0-230VAC) should be connected to J12 of the tube buffer. Attention, 18 should be connected to center point of J12.
6 and 7 (6.3VAC) should be connected to J13 of the tube buffer
24 and 25 (9VAC) should be connected to J14 of the tube buffer
Be careful, I recommend that you connect the trans to the main socket first and use a volmetter to check the secondary voltage to see if the voltage is correct. If everything is ok then connect to the PCB.
Some of these trans and the tube buffer have high voltage and can be dangerous if not properly handled. Please be very careful. The above information is for reference only. I can't take responsibility if anything went wrong.
Each trans has 2 primary winding. If you have 120V power you will only need one primary (1 red and 1 brown). As each trans has 2 red and 2 brown you 'll need a multimetter to check which red goes with which brown then select one pair of red and brown to connect to main socket.
Black wire is for earth connection.
8, 10 and 9 (18-0-18VAC) should be connected to SK1 on the DAC board. Attention, 10 should be connected to center point of SK1.
16, 18 and 17 (230-0-230VAC) should be connected to J12 of the tube buffer. Attention, 18 should be connected to center point of J12.
6 and 7 (6.3VAC) should be connected to J13 of the tube buffer
24 and 25 (9VAC) should be connected to J14 of the tube buffer
Be careful, I recommend that you connect the trans to the main socket first and use a volmetter to check the secondary voltage to see if the voltage is correct. If everything is ok then connect to the PCB.
Some of these trans and the tube buffer have high voltage and can be dangerous if not properly handled. Please be very careful. The above information is for reference only. I can't take responsibility if anything went wrong.
Hi Thomas,
I sent you a private email about possibly changing my order to ultimate v3 DAC. Please check get back to me. Thanks.
I sent you a private email about possibly changing my order to ultimate v3 DAC. Please check get back to me. Thanks.
Thank you Quan Tran
Quan Tran, Thank you very much! I was able to read your directions, look at the pcb schematic and the photo you posted of your dac. All makes sense now. I do plan to read up on safety precautions prior to starting the project. Thanks kindly.
🙂
Quan Tran, Thank you very much! I was able to read your directions, look at the pcb schematic and the photo you posted of your dac. All makes sense now. I do plan to read up on safety precautions prior to starting the project. Thanks kindly.
🙂
hi riotubes & quantran,
do U lke the ver.3 PCB???
I will free to U, pls let me know asap.
Only little remain.
thx
thomas
do U lke the ver.3 PCB???
I will free to U, pls let me know asap.
Only little remain.
thx
thomas
Thomas, Thank you for offering the v3 board. Yes, I would like one. I sent you an email with my address. Thanks
Thomas
Thanks for your kind offer. Of course I would like to have one set of your V3 DAC PCB. I can arrange for someone to come and pick it up directly from you if that's convenient for you.
Again, thanks
Thanks for your kind offer. Of course I would like to have one set of your V3 DAC PCB. I can arrange for someone to come and pick it up directly from you if that's convenient for you.
Again, thanks
tube-lover said:
Hi Thomas,
When you say finish DAC, is that mean including case & connector? Looking forward to the photo. What about the price?
btw, unable to access your web site. It keep redirect to this URL
https://www.diyaudiocraft.com:19638/webhost/rollout/site
Have fun,
Sam
hi quantran,
your sister was call me already.
I will take the PCB to her next week.
hi SamL,
es, it will be a funish one regarding the export ordinance. It need to connect the power cable by yourself. But it will be a fully funish one. plg & ply only. I was testing the new chips PCM2709 compare with the cm106L.
sec was the dac use transformer couple to op-amp to output. I was waiting for the output ransformers.
thx
thomas
your sister was call me already.
I will take the PCB to her next week.
hi SamL,
es, it will be a funish one regarding the export ordinance. It need to connect the power cable by yourself. But it will be a fully funish one. plg & ply only. I was testing the new chips PCM2709 compare with the cm106L.
sec was the dac use transformer couple to op-amp to output. I was waiting for the output ransformers.
thx
thomas
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