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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: The new PP2000 – still fine.Posted by Romy the Cat on: 1/17/2011
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More days came, with different electricity and it looks l like the PP2011 hold its stand – I did not detect a significant change in Sound so far. I gave a scoop plagued in the wall all time and I did not see so far a relation between the wave profile before PP2011 and sound after it.
Meanwhile I meat a guy I know who. Steve is battery expert and for many years he ran his own commercial battery shop. Now he owns the Battery Plus + store a few blocks from me. He read me a long lecture about using battery for AC buffering. In fact he informed that that it is very common practice to shunt batteries with capacitance and he did it for many car audio systems. I inspected the PP2000 battery tray and realized that it has two empty slots in which I can perfectly lay two 50.000uF 80v caps. Steve insisted that since I have switching PS to charge the battery then it will have absolutely no impact to anything but will only significantly increase the filtering defiance of my battery at HF. I might trey to do it….
He was a bit concern that my 5.1A battery has a bit too gentle charging algorithm. I measured before (on the broken November unit) that discharged battery were charging with initial 2A. He insisted that it is very low and this to low initial current will not move the ions properly in acid battery. He insisted that this charging algorithm will kill battery 50%-70% fasted then it has to be. Hm, might be this explains why my battery begin to loose filtration at the second year? On the other hands I did not measure the initial charging current on the PP2011. Frankly, it sounds so good that I do not what to touch it…
I know certainly that even in battery mode the PP2011 works differently then the November-December units. The December units worked from buttery down to 50-60% and shut themselves down. My fixed PP2011 unit I ran down to 22% discharge and it was still running. So, something they did change while they fix it in charging circuit as well….
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