Hi Dwight, I use a socket so no harm to my precious S1 crown.
I'd use the method here that T shows. http://www.diyaudio.com/forums/digi...any-good-tda1541a-dac-kit-13.html#post2862125 If you want you can split the grounds left and right dac back to analog ground pin. Might be pin 5? I would have to look that up. I looked through hundreds of pages and couldn't find the picture at EC's thread. 😱 That thing is long. DaveOh, I see what you mean. An alligator clip should work. I'd use a low profile socket for a precious dac and spare it the heat.
Decoupling
Hi ctef, I guess there are several ways to do it. That was one. doing it on the back of the board would be less worrisome. Dave
NOS didn't work
Hi msmart2b, Dwight I tried NOS today 3 jumpers across the 7220 socket. Didn't work at all. Silent. I had a 8414 installed. Put back DIR9001 and SM5814 and it worked fine. I have no idea why that didn't work. So my guess is you need the 7220 for now until everything is working. Unless we need the 4040 divider for some reason? I don't see why we would. Just a FYI for now. No Red Baron's yet..... 🙁 Dave
Hi msmart2b, Dwight I tried NOS today 3 jumpers across the 7220 socket. Didn't work at all. Silent. I had a 8414 installed. Put back DIR9001 and SM5814 and it worked fine. I have no idea why that didn't work. So my guess is you need the 7220 for now until everything is working. Unless we need the 4040 divider for some reason? I don't see why we would. Just a FYI for now. No Red Baron's yet..... 🙁 Dave
I've got a couple of 8416's coming in. I'll order the DIR9001 and SM5814. I plan to try TL's approach as well. Maybe at some point, we could build better boards than Red Barons.
TDA boards
Hi Dwight, I have a source for the SM5814, get the BP grade. Sounds better with the last manufacturing die. I can send you information on what mode to use and a simple adapter wiring for the SAA7220 socket. It behaves better then the 7220. I can see a lot of reasons to make good boards. I agree someone on this side of the pond should offer something better. Maybe we could do it.
Hi Dave,
I'd like to try the circuit at:
http://audioworkshop.org/downloads/DIR9001_TDA1541A_V5.pdf
It doesn't use the 5814. It looks simple. Simple is good.
Dwight
I'd like to try the circuit at:
http://audioworkshop.org/downloads/DIR9001_TDA1541A_V5.pdf
It doesn't use the 5814. It looks simple. Simple is good.
Dwight
Dac
Hi Dwight, I downloaded the schematics last night. A much better design. If your goal is NOS that is the best one I have seen. You may have to play with the jumpers on the DIR0001. Otherwise, simple really is better! 😛 Dave
Hi Dwight, I downloaded the schematics last night. A much better design. If your goal is NOS that is the best one I have seen. You may have to play with the jumpers on the DIR0001. Otherwise, simple really is better! 😛 Dave
Dac
Hi Dwight, I am planning to redo the decoupling on my first build. On that one I used some huge PPS leaded Panasonic caps. It sounds fine. I have some copper tape with adhesive on the back so I will do the Thorsten thing on the back side of the board. Plan to use PPS SMT capacitors. I'll order up several values like 0.1 uF. Put in what I can fit. I have to go back and reread Thorsten's post. A lot of information in that. Hey I hope your making some progress on the dac I have tried top help you with? Tough issue. Dave 😉
Hi, I can't find any information about this SM5814. Is it a digital filter? If it's so, please share with us. I'm thinking also about replacing 7220 with something better in the future.Hi Dwight, I have a source for the SM5814, get the BP grade. Sounds better with the last manufacturing die. I can send you information on what mode to use and a simple adapter wiring for the SAA7220 socket. It behaves better then the 7220. I can see a lot of reasons to make good boards. I agree someone on this side of the pond should offer something better. Maybe we could do it.
For now, I ordered Panasonic FC 1000uF and 22uF, and 2 X NICHICON KG GOLD TUNE 6800UF 35V. From domestic shop bough the WIMAs, 317&337, chocks, and BYZ26 diodes. About that SMD decopling capacitors. From Digi-Key, 1uF 16V Filmcapacitors are coming to me at 85 cents. ECH-U1C103JX5 Panasonic Electronic Components | PCF1196CT-ND | DigiKey
Sorry, wrong link. Probably this are, that which You are talking about.
I mean this, but afraid they are very big 0.126" L x 0.098" W (3.20mm x 2.50mm)
FCA1210C105M-G2 Cornell Dubilier Electronics (CDE) | 338-2778-1-ND | DigiKey
Post#3718 here: http://www.diyaudio.com/forums/digi...ding-ultimate-nos-dac-using-tda1541a-372.html
I mean this, but afraid they are very big 0.126" L x 0.098" W (3.20mm x 2.50mm)
FCA1210C105M-G2 Cornell Dubilier Electronics (CDE) | 338-2778-1-ND | DigiKey
Post#3718 here: http://www.diyaudio.com/forums/digi...ding-ultimate-nos-dac-using-tda1541a-372.html
SM5814 digital filter
Hi ctef, I have a datasheet and a source for the SM5814. PM me with your email and I will send that information to you. You are correct that datasheet can not be found on the internet. It is a digital filter. 🙂
Decoupling
Hi ctef, You found it! That is a very good way to do the decoupling without soldering to the actual dac. I would be nervous to solder directly on my dac chip. I can tell you this works. Those film caps did not always solder well for me. So take care with that. If you PM me I will answer later in the day. Off to work now. Dave 😉
Sorry, wrong link. Probably this are, that which You are talking about.
I mean this, but afraid they are very big 0.126" L x 0.098" W (3.20mm x 2.50mm)
FCA1210C105M-G2 Cornell Dubilier Electronics (CDE) | 338-2778-1-ND | DigiKey
Post#3718 here: http://www.diyaudio.com/forums/digi...ding-ultimate-nos-dac-using-tda1541a-372.html
Hi ctef, You found it! That is a very good way to do the decoupling without soldering to the actual dac. I would be nervous to solder directly on my dac chip. I can tell you this works. Those film caps did not always solder well for me. So take care with that. If you PM me I will answer later in the day. Off to work now. Dave 😉
Hi Dave,
The DIP socket for the cs8414 is bad. Continuity failed from the top of the socket to the pin bottom soldered to the board.
ctef, that's a nice looking board. Can you tell me where I could find the little pin cups to make a nice strong socket like the one shown in your picture?
Dwight
The DIP socket for the cs8414 is bad. Continuity failed from the top of the socket to the pin bottom soldered to the board.
ctef, that's a nice looking board. Can you tell me where I could find the little pin cups to make a nice strong socket like the one shown in your picture?
Dwight
This board is from -ecdesigns- picture. I'm also impressed of it.
About that pins, I also wonder how to find them, but if You in US can't, so "mission is impossible". 🙂
Do You know, what am I thinking about? I ordered rows of 40 gold plated pins. When they come, I'm going to try to take pins off from the rows.
About that pins, I also wonder how to find them, but if You in US can't, so "mission is impossible". 🙂
Do You know, what am I thinking about? I ordered rows of 40 gold plated pins. When they come, I'm going to try to take pins off from the rows.
Hi ctef,
I just had to remove a dip socket made with the gold plated pins because of continuity issues. Unfortunately because of greedy corporations, manufacturing has been exported and we have to buy most products like this from China. The problem with that is quality control. Some products work well, others do not. If you have a source that produces reliably good products, try to buy from them.
I just had to remove a dip socket made with the gold plated pins because of continuity issues. Unfortunately because of greedy corporations, manufacturing has been exported and we have to buy most products like this from China. The problem with that is quality control. Some products work well, others do not. If you have a source that produces reliably good products, try to buy from them.
Solder cup
Hi ctef and msmart2b, I remember reading that John (ECDesigns) removed those from a CPU socket for a computer. I have an old socket and it is on my to do list. 😉 John is one cool dude and one of the most productive here on the forums. Nice that he shares. 🙂
Dip socket
Hi Dwight, Making real progress now. I am glad you found something. Makes life interesting. If the continuity was with one of the programming mode "M#" pins, that might cause a noise issue. Keep me posted on your progress. I'll help if I can. 😀 Dave
Here you are naked pins from old socket. From thous old huge public computer-games from 90's.
It is easy to strip them with sharp nippers.
But I'm going to wait and thous "gold plated" from China, to check the quality.
As You can see, this pins are also yellow inside. Don't know brass or really gold plated😕
So, what is the idea of naked pins? Do you claim that plastic sockets are not 100% isolator?
It is easy to strip them with sharp nippers.
But I'm going to wait and thous "gold plated" from China, to check the quality.
As You can see, this pins are also yellow inside. Don't know brass or really gold plated😕
So, what is the idea of naked pins? Do you claim that plastic sockets are not 100% isolator?
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