scwhiteley
New Member
Howdy,
I recently built a few amps using TDA7240 ICs. I used the circuit design from the spec sheet. They seem to work pretty well, but for some reason, when set to a very low volume, there is an audible "scratchiness" to the music. Any ideas what would cause this? I did not use shielded wires to connect the source (iPod) to the amp input. Is this the likely culprit? I'm doubting it's the volume potentiometer itself, but I'm no expert.
here's a schematic of the circuit if you'd like to take a peek:
http://circuits.datasheetdir.com/344/TDA7240A-pinout.jpg
Thanks for all the help!
I recently built a few amps using TDA7240 ICs. I used the circuit design from the spec sheet. They seem to work pretty well, but for some reason, when set to a very low volume, there is an audible "scratchiness" to the music. Any ideas what would cause this? I did not use shielded wires to connect the source (iPod) to the amp input. Is this the likely culprit? I'm doubting it's the volume potentiometer itself, but I'm no expert.
here's a schematic of the circuit if you'd like to take a peek:
http://circuits.datasheetdir.com/344/TDA7240A-pinout.jpg
Thanks for all the help!
