Plugging a speaker port
Joey_V
Posts: 8,552
So the BW PM1 come with little foam ports, it is well diagramed in the manual that plugging ports cause attenuation of bass. Does plugging the ports also affect efficiency of a speaker? Like if the standard efficiency is 87db/w, does it dip even further with a sealed enclosure?
Magico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R
Comments
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Interesting, when I bought mine there were no plugs. Wondered if they were supposed to and what effect they had.
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I use the port plugs on my B&W CDM1NT bookshelves.
I've found that it acts like a steep slope cutoff that makes it easier to integrate my sub.
H9: If you don't trust what you are hearing, then maybe you need to be less invested in a hobby which all the pleasure comes from listening to music. -
My psb has them also. I didn't notice a volume difference, just tone difference.Klipsch The Nines, Audioquest Thunderbird Interconnect, Innuos Zen MK3 W4S recovery, Revolution Audio Labs USB & Ethernet, Border Patrol SE-I, Audioquest Niagara 5000 & Thunder, Cullen Crossover II PC's.
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Trying to find some to buy for my 703s.
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Trying to find some to buy for my 703s.
Let me find u the pic on the manual and the plugs... Gotta go to the attic... ArghMagico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R -
Just love that font: Bowers and Wilkins
Magico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R -
Erik Tracy wrote: »I use the port plugs on my B&W CDM1NT bookshelves.
I've found that it acts like a steep slope cutoff that makes it easier to integrate my sub.
Looks like BW says it decreases the slope of the cut offMagico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R -
I read that it helps if you plug when speakers are close to the walls.
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Just love that font: Bowers and Wilkins
I'm going to call B&W today and order some plugs. If I don't use them at least I'll have them if I sell them. -
Tube socks make excellent substrate for "lossy" (aperiodic) vents. Just thought I'd mention that.
You can experiment with different materials (cotton, spandex blends, etc.), clean vs. dirty, etc.
I am actually not being entirely facetious. Not entirely.
http://www.stereophile.com/finetunes/301/index.html#Vj80rDERrak7hUHK.97
http://www.whathifi.com/forum/hi-fi/straws-in-bass-port
http://www.whathifi.com/forum/hi-fi/bunging-speaker-ports
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Well... Now I'm missing one of the smaller tube plugs.
I look around and there's 1 suspect.
Emma.Magico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R -
Dang it, I still can't find the remaining plug... Emma!!!!Magico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R
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Maybe Henri is chewing on it.
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Magico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R
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I always take the plugs out.
It kills the low end.
B&W CM9Classé Sigma -
You can always get black duct tape
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You can always get black duct tape
Good idea. Maybe that would slow down Emma
Just kidding!Magico M2, JL113v2x2, EMM, ARC Ref 10 Line, ARC Ref 10 Phono, VPIx2, Lyra Etna, Airtight Opus1, Boulder, AQ Wel&Wild, SRA Scuttle Rack, BlueSound+LPS, Thorens 124DD+124SPU, Sennheiser, Metaxas R2R -
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