my kit 8084 works, but makes sometimes plopplop noise in the speaker; by change the bass and treble in the + direction
The kit is conectet wiht the ampplifier kit 8060, what can be the problem?
Hard to tell without being able to examine your circuit.
Make sure polarity of electrolytic caps is correct.
Sorry, this forum does not allow picture uploads
If you can provide LINKS (e.g. by using a free online picture base) to HI-RES and SHARP pics of your assembly (both solder- and component side)
then we can take a look and provide some feedback.