Nothing fancy just simple jumper kind of cables with the end at the RCA jacks stripped out the plastic connector and using direct soldering. Pot has leads which I did not want to solder them directly and I do have crimping tool to make myself using some nice tin plated wires which I usually do.
I keep a box or two of jumpers similar to this around for all sorts of things. Looks similar to what was used on the pot.
Amazon.com: 120pcs 20cm Multicolor Jumper Wires for Arduino/Raspberry Pi, 40 Male to Male, 40 Male to Female, 40 Female to Female by Corpco: Home Improvement
Amazon.com: 120pcs 20cm Multicolor Jumper Wires for Arduino/Raspberry Pi, 40 Male to Male, 40 Male to Female, 40 Female to Female by Corpco: Home Improvement
It's finally finished and it's sounds phenomenal!!! Just got the volume knob to change then I'm happy. Really pleased with how my own power supply performs too. It's super quiet!
Congrats Gaz. I tried powering mine up this evening. Good news is that there was no smoke. Bed news is that right now it sounds terrible
I tested each channel individually and they pretty much both sound the same. Pretty distorted output. I tried it initially with a set of Bose noise cancelling headphones, and when they survived I tried my Focal Elegias. Pretty similar results with both sets of phones.
All I've checked so far is the output voltage (with no input connected) which hovers around -0.02mV on both channels. Back to the drawing board and start some troubleshooting next week.
Yes its the same sort of female-female jumper cables which I used to save the pot pins.
I just ordered some myself. I have a number of switches and pots that would be just as fiddly to solder. And then you have to worry about solder bridges and connectors bending and who knows what. These jumpers look excellent, at least at the pre-final stages. Then I'm looking to minimize mechanical connections...
Congrats Gaz. I tried powering mine up this evening. Good news is that there was no smoke. Bed news is that right now it sounds terrible
I tested each channel individually and they pretty much both sound the same. Pretty distorted output. I tried it initially with a set of Bose noise cancelling headphones, and when they survived I tried my Focal Elegias. Pretty similar results with both sets of phones.
All I've checked so far is the output voltage (with no input connected) which hovers around -0.02mV on both channels. Back to the drawing board and start some troubleshooting next week.
If you get stuck goto my site and drop me an email. I may see something you have missed. Hope this helps.
Congrats Gaz. I tried powering mine up this evening. Good news is that there was no smoke. Bed news is that right now it sounds terrible
I tested each channel individually and they pretty much both sound the same. Pretty distorted output. I tried it initially with a set of Bose noise cancelling headphones, and when they survived I tried my Focal Elegias. Pretty similar results with both sets of phones.
All I've checked so far is the output voltage (with no input connected) which hovers around -0.02mV on both channels. Back to the drawing board and start some troubleshooting next week.
To be honest they are both very good but I think the Linestage slightly has the edge. To me it sounds just that little bit cleaner maybe because the gain is slightly lower therefore less distortion. Both still have their place for me.
Congrats Gaz. I tried powering mine up this evening. Good news is that there was no smoke. Bed news is that right now it sounds terrible
I tested each channel individually and they pretty much both sound the same. Pretty distorted output. I tried it initially with a set of Bose noise cancelling headphones, and when they survived I tried my Focal Elegias. Pretty similar results with both sets of phones.
All I've checked so far is the output voltage (with no input connected) which hovers around -0.02mV on both channels. Back to the drawing board and start some troubleshooting next week.
I think I have found the problem with my board. Some idiot soldered Q8 and Q20 in backwards.
Now that I've got over the embarrassment of that error, and before I start to desolder them, I was wondering whether I've possibly damaged something else in the process. Is it worth replacing Q8, Q10,mQ20 and Q25 while I'm at it? I think I have a few spares lying around. Any guidance would be gratefully received.
Thanks,
Gary
Just a temporary test set up until I can get a better enclosure sorted out. But, after getting Q8 and Q20 the right way round, it's alive and making sweet music! And with no input connected and the volume turned full up its dead quiet. I'm very happy with the results and even more grateful to Papa and Wayne for sharing.
Attachments
Hi there,
Yes, after that little hiccup with the reversed components I went back and re-read through the whole thread and went over the schematics a couple of times, comparing to my board. IN- is linked to ground on the reverse side of the PCB on each channel.
Thanks for the help guys. Now..... what's next????
All the best,
Gary