In Reply to: Correction- the supply voltage is a little higher. posted by Ralph on March 13, 2014 at 11:48:52:
Lew and Michael, thank you for your advice.
Ralph, what can I say. You brought everything together.
We now know the 200uF pairs are a minimum. As Ralph said, there are timing constraints.
Lew, I wasn't comfortable adding only one capacitor per phase. The HV caps go off in three directions. I didn't want to open any worm cans. So I installed one 150uF BlackGate per pair. This raised the total per amp from 1,200uF to 2,100uF.
I did one amp first. Plugged everything back in. Let it warm up, and listened. The music sounded a bit smoother. But nothing dramatic. So I went up to the first speaker, put my ear against the mid driver, and liked how clear it was. I went over to the non-updated speaker/amp, and noticed a type of distortion.
The second amp has now been modified, and there is no turning back. Stupendous.
Problem?; now I have to get a riser/skirt manufactured since the BlackGates protrude out the bottom of the amps. OPPS
Final question?; I have a few BlackGates left over. As per your recommendations, the LV 27,000uF caps need a minimum of 1% shunt caps to make a difference. I don't have any of those, so I would like to try the 150uF.
I WILL ASSUME the arrows on the BG's need to point to the -ve screw down's of the main caps.
Bored Billy is not so bored any more.
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Follow Ups
- SUCCESS. Thank you everyone - Cousin Billy 16:08:57 03/16/14 (5)
- SUCCESS. Then a step backwards - Cousin Billy 17:56:45 03/17/14 (4)
- RE: SUCCESS. Then a step backwards - Lew 10:21:43 03/18/14 (3)
- just a FWIW - Ralph 12:14:45 03/18/14 (2)
- I guess you are suggesting - Lew 13:13:07 03/18/14 (1)
- not exactly - Ralph 13:27:31 03/18/14 (0)