ACA Vs F5

[markw51]

Back to my aca amp, I did what rayma said and doubled the filter capacitors to 44,000 mfd per side and wow what a difference that made. It now sounds more like my F5. The aca has only one 100va power transformer. Next mod is to add another 100 va and stack em.

 

[rayma]

The supply capacitors are effectively in series with the speaker, so they act as a high pass filter.
More is better.

 

[zman01]

Just finished building a FW F5. Very happy with it. I also have an ACA with a linear power supply. Have not had the F5 running enough to really compare the two. But I'd say the ACA sounds a bit thinner than the F5 but the ACA seems more transparent. The F5 is meatier. Perhaps this is because of the power difference or the caps in the ACA. Would it make much of a difference to increase the size of the caps in the ACA audio path to add more weight - like lower power F5?

Would also like to hear other comparisons between the ACA and the F5. I had another ACA build with the SMPS that comes with the kit and that was a complete no go for me.

markw51,

What speakers are you using?

 

[markw51]

Klipsch Forte 1.