IanB52
100+ Head-Fier
Very interesting. Thanks for this! I haven't heard of anyone else testing this, so it is really cool to hear some confirmation.Yes, I saw Caelin's videos and white papers as well.
So I purchased an ASCC (Available Short Circuit Current) tester and performed several experiments using several types of power delivery and several different cables and duplex receptacles, and then measured the actual current draw into a 'test mule' HP amp using a non contact current sense probe.
The 3-4ms current flow pulses are followed by ≈ 8ms of wait time, or no current flow, in a continuous sequence.
So for 2) 3-4ms pulses out of a 16.6ms full ac 60Hz cycle, only ≈50% (at best) of the time will current flow into our gear.
So the greater the ability to quickly dump current from the upstream electrical service the 'better' our gear tends to sound.
In fact, if you know what you are doing AND have sufficient experience with ac power distribution systems, you can 'tidy up' the branch circuit that feeds your audio gear, and in a variety of ways.
Such as making sure the breaker clamp screw used to feed power to the branch circuit for our gear, that resides in the power distribution box, is tight and the wire lead has not been overheated etc.
I went so far as to use twist locks and soldered all of the romex to romex splices and noticed an immediate SQ improvement for the dedicated branch that feeds my audio system, ESPECIALLY the ground wire.
Optimizing the ac power current delivery capability, can definitely yield an improvement, even in our low powered HP systems, let alone higher powered speaker systems.
JJ
It's funny, in a former life as a studio engineer I knew an accomplished engineer who would talk about how tightening the screws on his breaker etc improved audio quality. Everybody basically laughed him off...