pinpoint_oxford
Active Member
I like mine, no plans on selling it.I am surprised you have not sold this yet. $5500 worth of nothing!
I like mine, no plans on selling it.I am surprised you have not sold this yet. $5500 worth of nothing!
WRMS is erroneous term. The product of Vrms x Irms is Pavg (average power - a sum of momentary powers). This average power is equal to half of peak power for sinewave. I guess one can make rms of any curve, including power curve, but it would be 0.612Ppeak for sinewave and it won't represent anything useful. It took FTC 25 years to understand it. Many people add "RMS" to signify real power (vs apparent power), but it is already included in "W" (vs. VA).Moving some theoretical numbers around as per the P12 regen unit and if using a unregulated linear supply.
NOTE: Using RMS wattage figures so they match what amp manufacturers quote for power specs:
Example #1 is a 50WRMS/ch amp @ +/- 28.3V rails @ 3.5A peak and using a theoretical 120VAC mains.
Lets say the AC droops to 110V @ a roughly ~9% decrease.
A decrease of ~9% on the rails makes for +/- ~25.75V rail voltages @ 3.2A peak = ~41.4WRMS.
Example #2 is a 100WRMS/ch amp @ +/- 40V rails @ 5A peak and using a theoretical 120VAC mains.
Lets say the AC droops to 110V @ a roughly ~9% decrease.
A decrease of ~9% on the rails makes for +/- ~36.4V rail voltages @ 4.5A peak = ~82.8WRMS.
Example #3 is a 200WRMS/ch amp @ +/- 56.6V rails @ 7.1A peak and using a theoretical 120VAC mains.
Lets say the AC droops to 110V @ a roughly ~9% decrease.
A decrease of ~9% on the rails makes for +/- ~51.5V rail voltages @ 6.4A peak = ~165.8WRMS. (Note rounding error.)
If using the P12 regen unit to maintain a steady theoretical 120VAC mains then I suppose at the power limits of the amp(s) there might be a noticeable sound difference but it's doubtful.
NOTE: @amirm found the P12 to decrease the power output when using the HC output @ ~7% less AC mains voltage.
seems to me like you are just denying facts, because its more comforting than admitting to yourself that you made a huge mistake. pretty common.I like mine, no plans on selling it.
Not denying facts. I never trust flowery language or ad-copy from a manufacturer website. I also don't believe that most components do anything meaningful, if at all, to affect the sound of a system by that much. You can look at my post history, I believe I've been quite rational in my approach to the P12 and other products. A salesperson did convince me to spend buy audioquest RCA cables before. I did, and realized I didn't notice a difference at all. I'm happy to admit that to myself.seems to me like you are just denying facts, because its more comforting than admitting to yourself that you made a huge mistake. pretty common.
Fair enough. If my system approached 6 figure capital cost, I might regard this expenditure as relatively reasonable. But it doesn't, so for me I don't.Not denying facts. I never trust flowery language or ad-copy from a manufacturer website. I also don't believe that most components do anything meaningful, if at all, to affect the sound of a system by that much. You can look at my post history, I believe I've been quite rational in my approach to the P12 and other products. A salesperson did convince me to spend buy audioquest RCA cables before. I did, and realized I didn't notice a difference at all. I'm happy to admit that to myself.
The P12 solves an actual issue I've had with intermittent noise issues and has many other features (like it's smarts and outlet controls) that I like having.
My emphasis added.No because *every* review of these devices raves about how much it makes the system sound better. Not one remotely puts down the device. So for a class of audiophiles, it is now a "given" that AC power needs cleaning, filtering, beefing up, etc. Naturally they are in shock that our data says that is not happening. It invalidates so much "everybody knows" folklore that they just can't accept it.
The other thing that makes this heated is the huge cost of the P12 and the fact that it wastes power so it is not like a fancy cable that doesn't do any harm.
Don't know if this answers your question:Has anyone done a checksum or anything else to compare the firmware 'update' with the older one to see if the file is the same or actually different?
I think the firmware update did change something with the HC outlet. I turned on my system to listen to some music and noticed two relay clicks now when turning on the HC outlet. One click when the outlet comes on and a second click a few seconds later.
Isn’t the inrush limitation about the charging the capacitance into the p12Needs to be verified (@pinpoint_oxford could do this).
The inrush protection would not work several seconds after the device would be switched on and the load(s) would be switched on later. It would defeat the purpose of having the inrush current limiter.
Isn’t the inrush limitation about the charging the capacitance into the p12