Dr.EM
New Member
Although I had bought a TDA2030 chip, I realised quickly it wasn't going to fit in breadboards, or stripboard for that matter. So, I decided to make this circuit because I had the parts around:
**broken link removed**
Well, it turned out to work quite well. I got reasonable volume and a decent frequency response, but I noticed it got exceedingly hot. I checked my test speaker and found it was actually 4 ohms and figured that was why. I might like to use this amplifier in an amplified test speaker design, but would like it to work with the 4 ohm speakers. Would this shown modification work? I don't have another set of BD139, BD140s to test anything with unfortunately.
**broken link removed**
Well, it turned out to work quite well. I got reasonable volume and a decent frequency response, but I noticed it got exceedingly hot. I checked my test speaker and found it was actually 4 ohms and figured that was why. I might like to use this amplifier in an amplified test speaker design, but would like it to work with the 4 ohm speakers. Would this shown modification work? I don't have another set of BD139, BD140s to test anything with unfortunately.