JacTaylor
On the lam
I measured the voltage of the left and right speaker at 170 mv for the left and ~70 for the right. At $.89/each for ZTX694b, I didn't spring for a 100 to find two matched pairs. Instead, I purchased a 100 of the KSC1845. As I was replacing Qe1 and Qe2, I found the hfe measurement of the original Qe2 was half of Qe1 for the right and about 1/5 for the left. Definitely, not matched pairs. After replacing matched Qe1, 2, and Qe3, 6,7 and 8 as suggested by Hopjohn along with caps, I had a measurement of and ~3 mv for the left and 16.8 mv for the right. I checked two or three times after running it for 30-40 min.
Okay, silly question for my first post.
This morning after running it with the FM radio for about an hour, the left was similar at 3.9-4.1 mv but the right was now steady around 7.4 mv. Not that I'm complaining (actually was delighted with 16.8 mv), but is this decrease due to just the longer warm up or is there some kind of magical break in of the new parts?
Okay, silly question for my first post.
This morning after running it with the FM radio for about an hour, the left was similar at 3.9-4.1 mv but the right was now steady around 7.4 mv. Not that I'm complaining (actually was delighted with 16.8 mv), but is this decrease due to just the longer warm up or is there some kind of magical break in of the new parts?