I've built this pre-amp. It seems to work well in one channel but the other has a definite hum in it. The hum doesn't seem to be coming from the power-supply, as one channel is fine. It's definitely coming from the pre-amp and not somewhere else along the line. Any idea as to what the likely culprit is?
cheers,
joseph
http://www.maxim-ic.com/appnotes.cf...mber/1931/ln/en
cheers,
joseph
http://www.maxim-ic.com/appnotes.cf...mber/1931/ln/en
The link I've got above doesn't seem to be working too well.
Here's a link to an identical schematic, shown in Figure 2, from the ESP website:
http://sound.westhost.com/project06.htm
Here's a link to an identical schematic, shown in Figure 2, from the ESP website:
http://sound.westhost.com/project06.htm
Hi BM,
How loud is this hum???
There must be something wrong with that channel.
Have you compared the two PCB's. Place them side by side and check every single component (color codes, polarity etc.).
If you don't find any faults there, I think it must be a bad soldering. Resolder all components.
Please keep us informed.
How loud is this hum???
There must be something wrong with that channel.
Have you compared the two PCB's. Place them side by side and check every single component (color codes, polarity etc.).
If you don't find any faults there, I think it must be a bad soldering. Resolder all components.
Please keep us informed.
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