A couple of years ago at Burning Amp Nelson gave me a pair of ACA 1.1 boards and some semiconductors. What is the difference between the 1.1 and current versions?
The changes were not dramatic. Comparing the current version ( https://d3t0tbmlie281e.cloudfront.net/igi/diyaudio/LJQomU3TV5UhVea2.large ) to the original ( page 5: https://www.firstwatt.com/wp-content/uploads/2023/12/art_amp_camp_1.pdf )
1) Possibly the addition of R15 (this might have been the V1.1 change)
2) Rail voltage increased from 19V to 24V
3) Change in feedback (R12) from 68.1K to 39.2K, reducing the gain.
The bottom line is a bit more power and lower distortion.
1) Possibly the addition of R15 (this might have been the V1.1 change)
2) Rail voltage increased from 19V to 24V
3) Change in feedback (R12) from 68.1K to 39.2K, reducing the gain.
The bottom line is a bit more power and lower distortion.
Thanks Dennis for the info, it was great meeting you and your brother at Burning Amp, are you guys coming to this years?
Yes, we did meet at BAF but I was there with a friend. Perhaps you were thinking of Ben and his brother?
Anyway, I hope to be back this year.
Anyway, I hope to be back this year.