@Arsonistdj 539740 wrote:

🙂 My mate has decided to buy another of the same geni so the plan is now to run the amp off one and the decks off another to be on the safe side 🙂
if we link more speakers into the amp will that lower the risk of blowing a speaker? got a couple of car subs lol 250w each
thanks for everyones help 🙂

Running sound equipment off two gennies is asking for problems, bad idea.

Don’t worry about the power consumption of the decks – it will be so tiny that you can forget about them. Unless you’re gonna be plugging lights in as well as the soundsystem then you should have enough juice. It’s worth learning how to do the maths so you can calculate this stuff yourself (Power = Current x Voltage).

Don’t put any more speakers on the amp, you already have too many! Think about it, if the amp can only output 200W (or whatever the actual figure is), it will never be able to power the 1400W of speakers you have. Adding too many speakers can damage the amp (in technical terms it loads the powered outputs, forcing them to deliver too much power into too small an impedance). It could also make it more likely to damage your speakers, not less. When you drive an amplifier hard it forces the signal to distort as it reaches its power capacity. The distorted signal is very damaging to the high-frequency drivers in speakers. It is very common for speakers to be blown by an underpowered amp – I lost a couple of 100W hifi speakers at a house party a couple of years ago because someone was playing distorted Youtube clips loudly through a 30W amp! Just make sure the red ‘clip’ lights aren’t flashing on the amp and don’t expect too much from the rig.

normally if two gensets are used one is for lights and the other for sound.

also beware that the impedance of the amp is 8 ohms and connecting speakers in parallel will bring this down to 4 or even 2 ohms which will be harder on the amp (if it does work it might not do so for long).

all that said (provided the kit doesn’t get badly redlined) I think the greatest risk to this lads equipment if its not a shindig in someones friends big garden or field (which isn’t impossible in a rural area) is the feds seizing it because the event is unlicensed rather than any technical reasons. With this small rig anyway it would be better to do this in a smaller space than a huge outdoor event and that would be more likely to be overlooked as “young people/students having a outdoor houseparty” than “big illegal rave”.

@korno 539790 wrote:

Where?lol

His avatar!

Can you have a generator TOO powerful for the amp?

@General Lighting 540331 wrote:

No, provided you have not done something very silly such as connect from the red output socket wrongly (400V instead of 230V), or the genset is not faulty and generating way too high a voltage.

The mains power is volts * amps which become volt-amperes (sometimes this is interchanged with a figure in watts, which isn’t always right for AC but takes complex maths to explain why).

in your house at the service head of UK Power Networks you have 1 connection of 230V at 100A (so 23 000 VA). Of course this is for everything in the house including the cooker and electric shower, but its far more than most small gensets provide. in a big club there can be 3 of these 100A feeds with 230V between each phase and neutral/earth or 400V between any two phases (so 69 000 VA in total). Really big buildings sometimes can have a 400A supply so that is (276 000 VA total).

It is the law here that the single phase mains is 230V AC ( +6 /- 10%) and frequency 50 Hz (or between 49-51 Hz in any 24 hour period). So all sound equipment is made to operate correctly provided your power source stays within these specifications – it does not matter if it is from the public mains, a genset or a renewable power installation with inverter.

I knew i could count on you GL for a perfect answer to my question. Happy days :weee:

sounds alright to me! Welcome to the world of outdoor partying!