Cleaning polypropylene woofers safely

heiney9
heiney9 Posts: 25,165
edited October 2010 in Vintage Speakers
At PF 2010 George delivered a pair of Pinnacle PN-5+ small bookies I bought from him. The cabinets are nice but they are a little dirty inside and out. The woofer is a 5 1/4" polypropylene with a foam surround. The woofer is dirty and I need to know what to use so as not to damage either material. With Polk drivers Windex works.

What would work here and be totally safe for the drivers and foam surrounds?

I am in the process of rebuilding the point-to-point x-overs with all new Dayton 1% Poly's and wirewound resistor, adding terminal cups that accept banana plugs, etc rather than the cheap push in clips.

Should be a nice sounding little speaker for a very modest bedroom tube based rig. :cool:

H9
"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
Post edited by heiney9 on

Comments

  • Face
    Face Posts: 14,340
    edited October 2010
    Have you tried a microfibre cloth yet?
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • heiney9
    heiney9 Posts: 25,165
    edited October 2010
    Face wrote: »
    Have you tried a microfibre cloth yet?

    No, I'm talking about some gunk, like food and perhaps pop that got into/onto the speaker thru the grill. I need something wet that will dissolve the organic materials. I thought about just mild soap and water. I don't want to get the foam surrounds wet or get any chemicals on them. They look great and should last a while.

    This should give you an idea of what needs to be cleaned.

    PinncacleWoof_001.jpg

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
  • OldmanSRS
    OldmanSRS Posts: 419
    edited October 2010
    heiney9 wrote: »
    No, I'm talking about some gunk, like food and perhaps pop that got into/onto the speaker thru the grill. H9

    Must have been one hell of a party.

    Try a MF towel with some simple green diluted 75% with H2O
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