Did you alter the feedback network to roll off above the speech range? May of the reference designs built around these are for hi-fi bandwidth.
On Wed, 1 Jan 2025 21:07:48 +0000 (UTC)
"Bob Loving via groups.io" <bob.loving@...> wrote:
Many years ago, I designed a PC board for the TDA 2003 Audio Amplifier. Like some have noted, the hiss level was/is a bit too high if you listen when wearing "cans."?
--
73
-Jim
NU0C
Jim Shorney