Originally posted by MxStYlEpOlKmAn My mom has a altec lansing computer sub, downfiring. It use to be my friend's and his was on carpet and it sucked eggs. I traded my computer speakers off with him and gave them to my mom. It is now on a platform on the desk and I swear it rocks the house. night and day
Originally posted by kberg Ok, so my Infinity BU2 is downfiring on carpet w/o a platform. Are you guys saying that I should raise it off the carpet and have it downfire on a hard surface, or raise it but still have it downfire on the carpet? If so, any suggestions for what might be most effective?
Originally posted by Tour2ma
First kberg, at what frequency is your crossover set? If its over 120Hz bad, 120Hz good, 90Hz better. Somewhere in the 90 to 120 range, where true, deep bass starts, fear of a subs output being muffled by carpet ceases to be a real issue for a down firing. True, deep bass is difficult to get rid of, that's why it's the principle realm of the standing wave. A number of company's make a pretty good living at offering solutions to standing wave issue (tube trap for one) because carpet, drapes, etc., just dont phase true bass.
Originally posted by Tour2ma kberg,
Multiple bass sources can interact directly with each other as well as all of their reflections, creating bass hot (reinforcement) and cold (cancellation) spots in you listening room. If you play test signals under 100Hz at 80 db or less, a walk around your room, with or without a SPL meter, should let you know whether this is occurring. If it is, raise your crossover point to 90 and repeat.
Originally posted by goingganzo just get a large piece of slate put it under the sub this will help you out.