Phase Plugs - a question

poynton · 16th August 2007, 08:20 AM

Hi,

While walking round Singapore looking for bits and pieces for projects, I came across some 5" fullrange speakers which appeared to have a phase plug.

On closer inspection, this was an integral part of the cone not attached to the magnet.

Would this work in the same way or is it a cosmetic con ??

Andy

richie00boy · 16th August 2007, 09:24 AM

Must be cosmetic, surely it's going to murder the transient response?!

poynton · 16th August 2007, 09:32 AM

I should say that the 'phase plug' appeared to be of light-weight plastic not steel, ally or wood so would not add too much to the cone weight compared to a normal dust cap.

Andy

sreten · 16th August 2007, 11:16 AM

Hi,

Its common in cheaper speakers and it is cosmetic.
Its also likely not good as dust caps never looked like that.
Like the previous penchant for blingy chrome dustcaps.

/sreten.

sdclc126 · 16th August 2007, 01:15 PM

I believe true phase plugs are stationary - if they move with the cone they don't have the desired effects.

16th August 2007, 08:20 AM	#1
poynton Magneto the Gravity Man diyAudio Member Join Date: Mar 2005 Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)	Phase Plugs - a question Hi, While walking round Singapore looking for bits and pieces for projects, I came across some 5" fullrange speakers which appeared to have a phase plug. On closer inspection, this was an integral part of the cone not attached to the magnet. Would this work in the same way or is it a cosmetic con ?? Andy

16th August 2007, 09:24 AM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Must be cosmetic, surely it's going to murder the transient response?! __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

16th August 2007, 01:15 PM	#5
sdclc126 diyAudio Member Join Date: Jan 2005 Location: San Diego, CA	I believe true phase plugs are stationary - if they move with the cone they don't have the desired effects. __________________ Soft Dome

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16th August 2007, 09:32 AM	#3
poynton Magneto the Gravity Man diyAudio Member Join Date: Mar 2005 Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)	I should say that the 'phase plug' appeared to be of light-weight plastic not steel, ally or wood so would not add too much to the cone weight compared to a normal dust cap. Andy

16th August 2007, 11:16 AM	#4
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, Its common in cheaper speakers and it is cosmetic. Its also likely not good as dust caps never looked like that. Like the previous penchant for blingy chrome dustcaps. /sreten.

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