Single, center-mounted array would be the best. So all the speakers hang in the middle of the room and face outwards. Line array would be the best option.
Place the subs in the corners of the room. We call it loading. So four corners then at least four subs, one in each corner. Might need more if you want more bass/low end.
Another cost would be treating the room so that the sound doesn't echo. Carpets on the walls etc. You don't want the sound echoing.
NB: Rather treat a room properly first time and build up the sound system. You don't need speakers everywhere as that's costly. In this application a center mounted array 9/10 times will be the best.
Some companies will try sell you loads of speakers as this equals more profit. Go for a company that doesn't try sell you all their stock.
skid sound
The price of a car sound system ranges depending on the brand and quality of the product. On average speaker systems cost around $200 for an average, middle of the range system.
They sound like metal rolling over metal.
A Bose Surround Sound Speaker System costs between $699-$999. This system is not necessarily the most affordable model on the market.
Not indoor. This may sound weird but you want as much contact with the ground in as small area as possible. outdoor has a tendency to create tread on your wheels just from skating across asphalt which chews up your wheels. Remember tread helps your grip when torque is applied by the tread itself. in speed skating your wheels are not powering you therefore it is not helpful or necessary.
No statistics are really kept on this,but any good surround sound system is going to last between ten and twenty years.
roller coasters waste energy through sound and heat. The wheels on the cart and the metal tracks grind together to make a fricional pull. this causes the screeching sound when the cart stops, and the heat of the track.
The electricity usage of a sound system can vary depending on the size and power of the system. On average, a small to medium sound system may use around 100-500 watts per hour during use. This can add up depending on how long the system is used for and the energy efficiency of the equipment.
electrical energy to sound, mechanical energy
The "th" sound as in "think" is part of the English sound system but not part of the Spanish sound system. Spanish does not have this interdental fricative sound.
Not much info in you question but Good Speakers connected to a 100 watt amplifier will improve the average sound system, speakers are the weakest link in the sound system so you should put most of your money there.
Two 10" subs are sufficient for an average suv sound system depending on the driver.