Class 'A' amplifier power output stages idle at 50% of their rated maximum
output power. Add the power consumed by other aspects of the amplifier's
electronics and the total idle wattage could easily run 60% or more of the
maximum output wattage rating for the entire amplifier -- and as William
Yes Larry, a starting battery. I'm feel quite sure it is designed for constant
voltage. We were discussing the deep cycle AGM battery.
I have seen batteries charged incorrectly and survive. But why take the chance
having a meltdown or worse?
Perhaps this will help some understand the importanc
I have been prolonging the temp comp. absorption voltage (no current) on start
batteries in boats for many years without any problems.
Larry Liesner
Wirewiz
31 Lincoln St
Westport, CT 06880
Phone: 203-644-2404
wire...@gmail.com
www.wire-wiz.com
On Apr 28, 2011, at 5:52 PM, Starlight Solar, La
Re: [RE-wrenches] AGM battery charging, more details"Until now"?.
For proper VRLA battery charging, once it is full, you MUST reduce the voltage.
It does not matter that you are opportunity charging. What if your turbine is
making power 24/7? The voltage will still need to be reduced afte
At 13:10 -0700 28/4/11, Starlight Solar, Larry Crutcher wrote:
Hugh,
One last point about the Solar Boost IPN product: Once you have
programmed the 2512iX charge controller from the IPN Pro, the
controller retains the information and can be installed as a
stand-alone unit. That means you can
Jamie,
My crew and I have installed the quickmounts almost twice as fast as the
Oateys consistently for a good year or two. My main concern with Oateys is
that rubber boot, it seems to be the Achille's heel of the whole system. How
long does it take before that gasket is shot? This has been the
Re: [RE-wrenches] AGM battery charging, more detailsHugh,
One last point about the Solar Boost IPN product: Once you have programmed the
2512iX charge controller from the IPN Pro, the controller retains the
information and can be installed as a stand-alone unit. That means you can have
a custom
The length of the festival will play a major role in how much PV power you
need. If it is only a couple days, you could start with a large, fully charged
battery bank for day (night) 1 and then just bulk them up for the second day.
If there is a resting period between events, the PV's will have
Friends:
I can not speak to the subject of tube amplifiers specifically, but in my
experience, I have found that a PA system draws almost as much idling as it
does during a performance. I suggest that if you need to conserve battery
power, after sound check that the amps be shut down. Sound
We JUST had a request come in for powering an American Cancer Society
daytime event. They said the band requires a 75kW generator. Hogwash...
just another example of how most stage and band people have no clue what
their power/energy consumption is.
I bet the entire stage will be plugged into o
Dan,
Nice trailer. We take a bit of a different approach. 40kWh (20hr rate) of Rolls
Batteries is our standard. It requires a custom trailer with heavy duty axles
and a pretty good vehicle to tow it. So many events require power to be on-site
for setup early in the morning or require power a
Hi Bill,
Hugh, .25 x C20 would be a C80 rate
Sorry I did not mean that, and I do not think that is what the
manufacturers instructions mean either. They mean 0.25 times the C20
capacity. That is closer to the C4 rate! (And they say 'up to 0.35
x capacity' ).
All controllers that I've
Hugh, .25 x C20 would be a C80 rate, and with flooded batteries, C100 was
the cutoff point at which you could do without a controller. All controllers
that I've ever worked with make adjustments in current to meet the
transitions between bulk-absorption-float. PWM controllers do it by
adjusting the
Hi Ray,
Problems? Nope. Never.
My "no tube amps" comment is a power consumption issue as you surmised.
Nothing more. Fact is, if I had unlimited battery reserve, I'd prefer tube
amplifiers over solid state, but that's another topic.
I powered Earth Day in Dallas in 2002 with a much smaller
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