I see a few different ones listed online, Costco specs their stuff different than Home Depot etc.
The one I am looking at based off your model has the following specs:
500w Amp Instant, 1000w Peak - for Jump Starting
200w Power Station for charging or whatever
According to QSC
A K10 at 1/8 power uses 2.3Amps @ 100 VAC or 2.01Amps at 2.01VAC
http://www.qsc.com/live-sound/produc.../k-series/k10/
Oversimplified Calculation of 'Apparent' Power:
Amps*Volts=Watts
So the consumption of the K10 alone would potentially be 230-241 watts putting you over the Power Station Limit right there.
That being said, there are other factors that knock down this number from what the label says. The K10 does use a class D amplifier, so it is possible to get way less of a draw making it possible to get them powered on as many reports of actual power draw are closer to .5a or .6a.
That aside, there's more than just the numbers to consider. I am going to assume you are considering this just to use the internal battery and not use some sort of inverter feature off a deep cycle battery.
1. At that price (~80), I doubt you are getting a clean sine wave from the DC to AC converter. It's going to be some modified/trimmed/squared off signal that could potentially shorten the life of your K10s. Quality inverters that will do the job start at around double what this cost.
2. Peaks/Spikes needed in power can easily trip something even if you can get it started and 'kind of working'. I have a 2000w generator which has brownouts at higher volumes when connected up to the equipment.
3. The unit is designed for short bursts of high power or trickles to charge household items, I would not trust it for a professional application as it may not have the mechanisms in place to deal with heat dissipation etc.
Side note: While it was not the same brand or model, I used something similar to attempt to power a pump to get standing water off my boat cover in storage. It didn't work. I tried to jump my boat off it - still didn't work. If it couldn't power a small pump for 2 minutes, I wouldn't have any confidence in it moving a woofer for 2 hours.
My advice: Save your money and get a high quality inverter with a deep cycle battery, or a quiet inverter generator, or a decent set of battery powered speakers. Unless you have some great protection plan, replacing a K10 sounds just as expensive.
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