ported speakers and placement

leftwinger57
leftwinger57 Posts: 2,917
edited March 2011 in 2 Channel Audio
Hi guys,
I own a pair of Infinity SM112s and both have rear ports around 2in in diameter.With rear fireing ports is it a way to get sound to reverberate off the wall or to let pressure out.I can see these both being true so is there a definative reason for rear fireing ports. With that now we have front ports that have nothing to bounce off of ,so what does this accomplishand and is there any advatage either way with the 2 ways of porting a speaker. I know placement is super critical and my speeks are about 8-10 in off the wall. I do remember that 901s were notorious for placement and people would drill them to hang from ceilings,not knowing the best placement and more to get them out of the way.
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Comments

  • steveinaz
    steveinaz Posts: 19,538
    edited March 2011
    Rear ported speakers can get boomy if placed to close to walls/corners. I think the decision wether to rear or front port depends on the design parameters of the speaker. Porting not only helps efficiency, it also allows for more power handling and bass reinforcement.
    Source: Bluesound Node 2i - Preamp/DAC: Benchmark DAC2 DX - Amp: Parasound Halo A21 - Speakers: MartinLogan Motion 60XTi - Shop Rig: Yamaha A-S501 Integrated - Shop Spkrs: Elac Debut 2.0 B5.2