Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.
Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: Outdoor event

  1. #1

    Join Date
    Sep 2009
    Location
    Nottingham
    Age
    50
    Posts
    780

    Default Outdoor event

    Hi Guys

    Just wondered if anyone has had problems with amplifiers
    when they have done an outdoor event,powered by a generator?
    My amp kept cutting out when I was using it is this anything to do with power surges from a generator?

    Thanks in advance .

  2. #2

    Join Date
    Jun 2010
    Location
    Bristol
    Age
    48
    Posts
    69

    Default

    Firstly, I take it that it was a petrol genny? (i.e. the kind of thing from Machine Mart). They never give the power you're expect, you have to take account of power factor correction and other bits such as that. Always work out KVA rather that Watts. The other thing that can cause a problem is a lot of modern PSU's are switch-mode and they need a good earth, so was the genny earthed correctly, with a proper earth spike?
    Anytime I've had no other choice than to run from a petrol genny I've always added a 500W halogen light (that's is on ALL of the time) as it helps settle the genny.
    If you have to do it again go for a diesel genny from a proper supplier.

  3. #3

    Join Date
    Feb 2015
    Location
    Reading, Berkshire
    Age
    36
    Posts
    955

    Default

    Generators come in lots of different flavours.

    The small portable ones are rarely sufficient for anything other than a small pa system.

    What generator were you using?

  4. #4
    yourdj's Avatar
    Join Date
    Jan 2008
    Location
    The New Forest
    Age
    38
    Posts
    7,110

    Default

    Not ever had a dodgy generator, but I tend to work in decent marquees with big desiel ones. i have one of these in the garage, which can run for a bit in the even of a power issue. The battery is dead mind you but I am reliably informed that they do a reasonable job, especially with sound limiters and digital PA that will not draw much power.

    Name:  Unknown.jpg
Views: 82
Size:  5.1 KB

    https://www.ebuyer.com/113906-apc-ba...caAmPZEALw_wcB
    Your DJ - Mobile DJ The New Forest, Southampton & Hampshire. Toby
    http://www.yourdj.co.uk/ | http://www.phatdiscos.co.uk/

  5. #5

    Join Date
    Sep 2009
    Location
    Nottingham
    Age
    50
    Posts
    780

    Default Outdoor event

    Hi

    It was a big deisel generator powering lights etc (it was a wedding) .
    The band were powered with that never had problems with this amp before I will take it to be checked out it didn't seem to be overheating warning light didn't come on.

  6. #6

    Join Date
    Jun 2010
    Location
    Bristol
    Age
    48
    Posts
    69

    Default

    As it was a diesel, and presumably from a decent supplier, the next question is what amp was it? (Make and model).

  7. #7
    Dinosaur Excalibur's Avatar
    Join Date
    Jul 2006
    Location
    East Yorkshire
    Age
    64
    Posts
    25,639

    Default

    Quote Originally Posted by djeddie View Post
    Firstly, I take it that it was a petrol genny? (i.e. the kind of thing from Machine Mart). They never give the power you're expect, you have to take account of power factor correction and other bits such as that. Always work out KVA rather that Watts. The other thing that can cause a problem is a lot of modern PSU's are switch-mode and they need a good earth, so was the genny earthed correctly, with a proper earth spike?
    Anytime I've had no other choice than to run from a petrol genny I've always added a 500W halogen light (that's is on ALL of the time) as it helps settle the genny.
    If you have to do it again go for a diesel genny from a proper supplier.
    Hard to disagree with that.

    Toby's idea of an UPS seems logical, and since it's main purpose in life would be power smoothing, then I assume a fairly small one could suffice.

    Since we now know it's a big diesel genny, as Eddie has said above, the amp itself is the next place to look. A well respected colleague was having kittens this weekend, because he had to run his switch mode amps from a generator, and he feared for their safety.
    Excalibur. Older than the average DJ.

    www.excaliburmobiledisco.co.uk

  8. #8
    yourdj's Avatar
    Join Date
    Jan 2008
    Location
    The New Forest
    Age
    38
    Posts
    7,110

    Default

    Quote Originally Posted by Excalibur View Post
    Toby's idea of an UPS seems logical, and since it's main purpose in life would be power smoothing, then I assume a fairly small one could suffice.
    I don't think it would last long though, a 15 inch battery speaker would be the best back up (one charging as ones playing). Its not ideal but better than silence and a crying bride. I almost bought a petrol generator the other day as that would be dead handy if for any reason you had a blackout or were camping. the honda ones are near silent now, so perhaps at least that should power the vitals??

    This spurred me to order a battery today as my UPS been sat in the garage for 2 years (only cost me 15). I will bring it to every marquee, dodgy house mains supplied marquee I go too just in case. One of my DJ's Martin always has one (same make and model) on his kit and swears by it. He has a 7K Nexo rig and I guess it runs that for a limited amount of time?

    If your using analogue amps, then perhaps its worth looking at going digital? Were you drawing voltage from other things especially halogen lighting and haze machines etc. as thats normally the problem. Perhaps the kitchen ovens were on or the halogen festoon lighting outside switched on etc?? What was the breaker box. Sorry for the questions, but when i have any marquee event (especially in a garden) I dod a reccee and the first thing I look at (after access) is the electrics and lighting controls.

    My suspicion is that this might be buffet (ovens - assuming not gas) and when it started to get dark (lighting). Bar fridges/coolers??
    Last edited by yourdj; 20-05-2018 at 10:25 PM.
    Your DJ - Mobile DJ The New Forest, Southampton & Hampshire. Toby
    http://www.yourdj.co.uk/ | http://www.phatdiscos.co.uk/

  9. #9

    Join Date
    Sep 2009
    Location
    Nottingham
    Age
    50
    Posts
    780

    Default

    Quote Originally Posted by djeddie View Post
    As it was a diesel, and presumably from a decent supplier, the next question is what amp was it? (Make and model).
    Not sure will check but I spoke to my guy who fixes my equipment and he says it probably was the converter that breaks power to AC ?? As at end of night the amp was fine because less things were being powered from Genny.

  10. #10
    Dinosaur Excalibur's Avatar
    Join Date
    Jul 2006
    Location
    East Yorkshire
    Age
    64
    Posts
    25,639

    Default

    Quote Originally Posted by Excalibur View Post

    Toby's idea of an UPS seems logical, and since it's main purpose in life would be power smoothing, then I assume a fairly small one could suffice.
    Quote Originally Posted by yourdj View Post
    I don't think it would last long though, a 15 inch battery speaker would be the best back up (one charging as ones playing).
    You misunderstand, Toby. I'm not talking about it running the night when the power goes off, but simply for it to take out any nasties from an errant generator, and in the case of a cut, to allow you a controlled switch off.

    Quote Originally Posted by simon1969 View Post
    Not sure will check but I spoke to my guy who fixes my equipment and he says it probably was the converter that breaks power to AC ?? As at end of night the amp was fine because less things were being powered from Genny.
    Aha! And there we may have the answer. Sadly, Toby may easily have guessed correctly earlier.

    Quote Originally Posted by yourdj View Post
    My suspicion is that this might be buffet (ovens - assuming not gas) and when it started to get dark (lighting). Bar fridges/coolers??
    It's possible that the load on the generator was too high, and caused the voltage to drop, which your amp didn't like. I don't know if switching amps are voltage sensitive. It certainly sounds an interesting problem.
    Excalibur. Older than the average DJ.

    www.excaliburmobiledisco.co.uk

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •