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817718 View Drop Down
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    Posted: 19 September 2023 at 8:25am
Hi,

Im looking for some advice on renting the correct generator for soundsystem + a bunch of projectors. 

1.) Soundsystem = approx 5k
2.) 8x Projectors = *im guessing it will be combo of LED and DLP projectors... so maybe each projector will draw about 200 - 300 watts? 

Question: Will i be ok with running everything off (1x 7k) genny? Or do i need to get (1x 5k) + (1x 2k)?

Many Thanks!
Binnie

 


Edited by 817718 - 19 September 2023 at 8:30am
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DMorison View Drop Down
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Points: 1604 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMorison Quote  Post ReplyReply Direct Link To This Post Posted: 19 September 2023 at 8:21pm
Highly dependant on what you mean by "approx 5k" for the sound system.

If it's 5kVA continuous draw (ie about 40kW of amps for mainstream music types like rock etc) then definitely not, you'll want about a 10kVA to run it all.

If it's 5kW nominal amp ratings then a single 5kVA will probably run the whole lot fine.
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817718 View Drop Down
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Points: 63 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 817718 Quote  Post ReplyReply Direct Link To This Post Posted: 19 September 2023 at 8:42pm
Im running....

2x PKN XE 2500 @ 8ohms. 
Each amp is rated 700W per side. 
So 2x @ 1400W (i cant see on their spec sheet if continuous or nominal?) = 2800W

1x MATRIX XT800 @ 8ohms = 500W (i cant see on their spec sheet if continuous or nominal?) 

2x Yamaha DSX15 MK2 = 800W each (continuous) x2 = 1600W

2x Yamaha DXR156 MK1 = 700W each (continuous) x2 = 1400W

TOTAL = 6,300W 
The reason i estimated 5K draw was because the music was going to be mostly ambient/drone. Not banging or anything. 

Thanks a mill for your reply btw!  





Edited by 817718 - 19 September 2023 at 9:03pm
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duty cycle of that rack will be surprisingly low 5k max  But the bigger the generator the more stable the power delivery.  So get the biggest the budget will allow.  10kva is good.. Another tip is use 10% or 15% of the available power  to drive a static load.  A kilowatt of halogen or metal halide lamps this helps the genset regulator stabilize  and reduces the risk of power fluctuation.. 
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Don't guess! Smile
Buy one of these power monitors, and measure the watts of your actual bass amp(s) running into your actual bass bins at the level you expect to run at.
Repeat for each amp, & add them up.
Then, when your rig is running, you can use the same device plugged in to a socket on the rack, to monitor the voltage you're getting.
You'll be able to see if the genny is struggling, or set up wrong, or just sh1t, because the voltage will be dropping below 220, or fluctuating wildly.
https://www.ebay.co.uk/itm/364459804204

Whilst we're talking electrics, every sound system operator should have one of these imo. 
I never plug anything in until it tells me that all the wiring is correct, the voltage is not too high, or low, and the earth loop impedence is good. (resistance to ground)

https://www.ebay.co.uk/itm/125734249209

I can't tell you how many it has found critical problems in power distro, despite being told 'it's all good'

Great for testing all your power cables too, although it doesn't replace a proper electrical safety check. (screws tight, cable clamp fitted & working, etc)
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Originally posted by opus jody opus jody wrote:

Don't guess! Smile
Buy one of these power monitors, and measure the watts of your actual bass amp(s) running into your actual bass bins at the level you expect to run at.
Repeat for each amp, & add them up.
Then, when your rig is running, you can use the same device plugged in to a socket on the rack, to monitor the voltage you're getting.
You'll be able to see if the genny is struggling, or set up wrong, or just sh1t, because the voltage will be dropping below 220, or fluctuating wildly.
https://www.ebay.co.uk/itm/364459804204

Whilst we're talking electrics, every sound system operator should have one of these imo. 
I never plug anything in until it tells me that all the wiring is correct, the voltage is not too high, or low, and the earth loop impedence is good. (resistance to ground)

https://www.ebay.co.uk/itm/125734249209

I can't tell you how many it has found critical problems in power distro, despite being told 'it's all good'

Great for testing all your power cables too, although it doesn't replace a proper electrical safety check. (screws tight, cable clamp fitted & working, etc)

Found a very similar item at less than a third of the price at https://www.ebay.co.uk/itm/305152260994?hash=item470c7dfb82:g:qvwAAOSwRNtlDK~E&amdata=enc%3AAQAIAAAAwEFkOfSJEEXIZa04xjRsCp2X8Km5T8z4mtx1Eaj9BPIv7lUX%2FmFpl6YCvDFUBU6H7f25tb6X2LVJldivFkoJTDCjKnqZLekjmMRm%2Fed0qhdsy1%2BjYhWHYCGSIB9%2BOjH%2Bf2IfqYT8VGhDFmMyl6cwmTLA2yqvtXWMuEoIdCGNqQB3aAB9a7bkofAFVahV7sV80uU0tHF5nTPijxKdKQKDD8ooIeykVD9enAuAtfmAIrDZ2Cq6zUz%2ByXI8SeS%2F9LASxg%3D%3D%7Ctkp%3ABk9SR_Da5qHXYg
Certainly worthwhile trying out for the same facilities
(plus an RCD test button) at less than one third the price.
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