I'm looking to make my pinball machine a little more quiet. Thought I would throw some thick insulation material in it, but different material works better with some frenquencies than others...

In my case I reckon the flippers themselves are making the most noise, would someone make an educated guess what frequency they are so I can pair them with right isolation material?

An example of typical isolation material.... NCR 500-4000hz doesnt seem to be a problem, where as 125-200hz seems far more difficult to quiet, so if flippers and typical pinball mechanical noise are within that range, then it becomes a little more difficult.

There's a risk of overheating but doesn't todays games run cooler considering they're now LED lamps? I'll give it a shot plugging the ventilators and measuring the tempature... maybe 1 hour of play will not be so bad... i rarely play for very long, my concentration seems to be limited

I want to quiet the machine so it doesn't disturb others so much, so throwing some insulations in it might work with the mechanics and having it on a some kinda vinyl carpet might help with vibrations (I'm thinking one of those they use at gyms under threadmills)

Soundproofing a room is very difficult to do, but of course it's not totally empty, I do have some heavy rugs etc

I'll let you know if I have any success and if you have any other suggestions feel free to share.

right maybe thats not such a good idea. as far the insulation material i put in the machine maybe it's a good idea to get some that doesnt make it much warmer than it already is...