No problem.
I know that the traces in that area are very delicate, if they are damaged you can also follow the traces back to the chip socket pins and attach your 4 output wires there.
Best, Bill
Thx jkeny, I'll add you on buddy list and then we can take it from there as you're right... let's not high-jack the thread further.
I was just rereading the other thread and was reminded that the Slagles and Lundahls are quite different animals. The Lundahls are a dc short so some series Rs must be used with them to protect the chip.
@McGyver:
Could you please
make some quick&dirty drawing of the way in which you connected your Monacor LTR 110 transformers - without tube stage.
Pleeease...
Could you please
make some quick&dirty drawing of the way in which you connected your Monacor LTR 110 transformers - without tube stage.Pleeease...
@ gamgee
Here is a picture of my monacor implementation.
Input from DAC (before capacitors at L+/-, R+/-) through series resistors of 220 Ohm to connection 1 and 3.
In between 1 and 3 a capacitor of about 7 nF. (4,7 + 1,8 in my case).
From 6 and 8 to the output with a resistor of 1k and cap of 3nF between 6 and 8.
Hope this helps.
BTW this really is worth the extra 20 euro!!!!
The values above from earlier posts really do the trick, I tried without output R and C, but sounded rough around the edges, really unnatural.
With a lower input-cap the sound is less polished. Maybe the pre-amp does not like the HF-garbage.
Here is a picture of my monacor implementation.
Input from DAC (before capacitors at L+/-, R+/-) through series resistors of 220 Ohm to connection 1 and 3.
In between 1 and 3 a capacitor of about 7 nF. (4,7 + 1,8 in my case).
From 6 and 8 to the output with a resistor of 1k and cap of 3nF between 6 and 8.
Hope this helps.
BTW this really is worth the extra 20 euro!!!!
The values above from earlier posts really do the trick, I tried without output R and C, but sounded rough around the edges, really unnatural.
With a lower input-cap the sound is less polished. Maybe the pre-amp does not like the HF-garbage.
Attachments
Would you mind starting a new thread? I am very interested in using this idea and would like ideas on using it with different t-amps/dacs.
I'm going to get a couple pf trafos from Cinemag (CMOQ-2H) and see how they perform, I'll post the outcome here 🙂
Yes, Data, let us know how they sound.
Vaughan, I have another thread about DAC output transformers on which I also posted the Tripath mods - you can post there if you need to ask questions. Ah yes, I see you've already posted on that thread - it's probably no harm to start a new just dealing with the Tripath & Transformer inputs
Vaughan, I have another thread about DAC output transformers on which I also posted the Tripath mods - you can post there if you need to ask questions. Ah yes, I see you've already posted on that thread - it's probably no harm to start a new just dealing with the Tripath & Transformer inputs
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@gamgee,
Almost,
Input is ok,
output there is only one resistor in series with the capacitor between the outputterminals, like a high frequencyfilter.
Almost,
Input is ok,
output there is only one resistor in series with the capacitor between the outputterminals, like a high frequencyfilter.
Another way of saying it, wire the trafo secondaries directly to the RCAs, then solder the cap and R in series, then install across the RCAs.
ok guys, thank you - i have just one more question:
GerardA, in your post you are using "nF" - this stands for "nano Farad"?
Sometime, in my country, some people use "n" and some use "u" instead of "micro" prefix, because they dont know where to find "μ" on the keyboard.
I don't want to mess something up, so, is it nano or micro range?
GerardA, in your post you are using "nF" - this stands for "nano Farad"?
Sometime, in my country, some people use "n" and some use "u" instead of "micro" prefix, because they dont know where to find "μ" on the keyboard.
I don't want to mess something up, so, is it nano or micro range?
Haha, n of nano mu for the other one.What key is that?
I meant nano, you can check this with earlier posts, I think it was Legarem who came with these values after doing calculations and listening test.
But you can try both and listen if you hear the difference!
I meant nano, you can check this with earlier posts, I think it was Legarem who came with these values after doing calculations and listening test.
But you can try both and listen if you hear the difference!
Code:
outputs 6 & 8 on the trafo go on which part of the RCA respectively)Does not matter as long as it is the same for left and right.
Maybe you want absolute phase to be correct?
Than you need to do some extra testing/measuring with which I can not help you.
Would be interested myself too!
If you put 1 on negative and 8 on ground/earth/negative the trafo is not supposed to change absolute phase.
Don't know what the DAC is doing.
(Don't make connections between 1 and 8 directly or indirectly)
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I bought 4 Monacor LTR-110 to do some experiments with this DAC and a Buffalo24 from Twisted Pear.
For now i have connected the + and - DAC out directly to the primary of the LTR-100 and the secondary to RCA with a 10K resistor in parallel for both DACs.
I attach the results of measurement done with RMAA.
Next i will try a better way of connecting the transformer to the DAC (something like the way descripted by GerardA on post #1285)
Anyway i can say that i really like these transformer out DACs, it seems to me the Buffalo24 is a little bit better in detail and in the positions of the instruments on the soundstage.
Ciao
Andrea
(on the left CS4398, on the right Buffalo24)
For now i have connected the + and - DAC out directly to the primary of the LTR-100 and the secondary to RCA with a 10K resistor in parallel for both DACs.
I attach the results of measurement done with RMAA.
Next i will try a better way of connecting the transformer to the DAC (something like the way descripted by GerardA on post #1285)
Anyway i can say that i really like these transformer out DACs, it seems to me the Buffalo24 is a little bit better in detail and in the positions of the instruments on the soundstage.
Ciao
Andrea
(on the left CS4398, on the right Buffalo24)
Attachments
Aaand once again:
Thank you people for helping me out - as soon as I get all the parts that I need, I'll get on with it and report here - hope that will be one happy report (no smoke from fried components involved).
🙂
Thank you people for helping me out - as soon as I get all the parts that I need, I'll get on with it and report here - hope that will be one happy report (no smoke from fried components involved).
🙂
