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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Attaching fiberglass to the walls of a speaker enclosure
Not really a repair issue, but I'll bet someone here has an idea on
this. I have a couple MDF cabinets which will each house 1 10" woofer & 1 10" passive radiator as subs. I have some of that white "softer" owens corning fiberglass insulation that comes in a pink plastic cover (the type that is totally enclosed in the plastic) which I intend to remove from its covering & use to line the walls of the enclosures. What is the best way to attach the fiberglass to the walls of the boxes? Glue I'm assuming, but what type is best? TIA Dan |
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"Dan" wrote in message ... | Not really a repair issue, but I'll bet someone here has an idea on | this. I have a couple MDF cabinets which will each house 1 10" woofer & | 1 10" passive radiator as subs. I have some of that white "softer" owens | corning fiberglass insulation that comes in a pink plastic cover (the | type that is totally enclosed in the plastic) which I intend to remove | from its covering & use to line the walls of the enclosures. What is the | best way to attach the fiberglass to the walls of the boxes? Glue I'm | assuming, but what type is best? I don't like fibreglass for this. There's always a chance it will come loose and cut through the voice coils etc. Look in fabric shops for fibre filling as used in comforters. N |
#3
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Thanks for the reply. I'm assuming you mean a polyester material such
as dacron? Anything else I should look for when buying this material? Each box is ~ 2.25 cu'. I had thought of attaching a ~ 3" layer of fiberglass directly the panels, but would I be better off simply loose stuffing the entire interior rather than gluing the damping material directly to the panels? Sure would be easier. Dan NSM wrote: "Dan" wrote in message ... | Not really a repair issue, but I'll bet someone here has an idea on | this. I have a couple MDF cabinets which will each house 1 10" woofer & | 1 10" passive radiator as subs. I have some of that white "softer" owens | corning fiberglass insulation that comes in a pink plastic cover (the | type that is totally enclosed in the plastic) which I intend to remove | from its covering & use to line the walls of the enclosures. What is the | best way to attach the fiberglass to the walls of the boxes? Glue I'm | assuming, but what type is best? I don't like fibreglass for this. There's always a chance it will come loose and cut through the voice coils etc. Look in fabric shops for fibre filling as used in comforters. N |
#4
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White glue ( a.k.a PVA) works. So do a few flat head nails - just don't
drive them more than what is required to slightly compress the fibreglass. finally, loose filling works too - just cut the glass slightl oversize and the compression will hold the sheet in by tension alone. This is not always suitable for every cabinet, mind you. Craig "Dan" wrote in message ... Not really a repair issue, but I'll bet someone here has an idea on this. I have a couple MDF cabinets which will each house 1 10" woofer & 1 10" passive radiator as subs. I have some of that white "softer" owens corning fiberglass insulation that comes in a pink plastic cover (the type that is totally enclosed in the plastic) which I intend to remove from its covering & use to line the walls of the enclosures. What is the best way to attach the fiberglass to the walls of the boxes? Glue I'm assuming, but what type is best? TIA Dan |
#5
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"Dan" wrote in message ... | Thanks for the reply. I'm assuming you mean a polyester material such | as dacron? Anything else I should look for when buying this material? | Each box is ~ 2.25 cu'. I had thought of attaching a ~ 3" layer of | fiberglass directly the panels, but would I be better off simply loose | stuffing the entire interior rather than gluing the damping material | directly to the panels? Sure would be easier. Some actually like loose wool (from sheep yet), but to me that's going too far. Most designs I have seen just involve layering the material inside without packing it tightly. There were several quite good books produced in England on ways to make speaker boxes that are high quality. N |
#6
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Thanks for the replies on this. I went to the fabric dept at the local
walmart & got 4 22" x 22" x 2" polyester fiber cushion squares, basically the fiber but pressed into a square. 8 bucks each (I was surprised how much this stuff cost at a fabric only store). It's nice & firm so it can be shaped easily & is rigid enough to hold in place w/o glue. Already did one box, I think it will be great for this application & not too expensive. Dan NSM wrote: "Dan" wrote in message ... | Thanks for the reply. I'm assuming you mean a polyester material such | as dacron? Anything else I should look for when buying this material? | Each box is ~ 2.25 cu'. I had thought of attaching a ~ 3" layer of | fiberglass directly the panels, but would I be better off simply loose | stuffing the entire interior rather than gluing the damping material | directly to the panels? Sure would be easier. Some actually like loose wool (from sheep yet), but to me that's going too far. Most designs I have seen just involve layering the material inside without packing it tightly. There were several quite good books produced in England on ways to make speaker boxes that are high quality. N |
#7
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On Sun, 21 Nov 2004 19:14:23 -0500, Dan
wrote: Not really a repair issue, but I'll bet someone here has an idea on this. I have a couple MDF cabinets which will each house 1 10" woofer & 1 10" passive radiator as subs. I have some of that white "softer" owens corning fiberglass insulation that comes in a pink plastic cover (the type that is totally enclosed in the plastic) which I intend to remove from its covering & use to line the walls of the enclosures. What is the best way to attach the fiberglass to the walls of the boxes? Glue I'm assuming, but what type is best? TIA Dan Don't use fiberglass unless the enclosure is totally enclosed.(no venting or porting) Better to use dacron hollow fill which can be gotten cheaply at any department store fabrics department. Use spray mount on the mdf and then press the hollow fill onto the board. Allow to set then fluff the hollow fill out a bit, just don't leave it compressed tightly. The theory is to use the the loosely packed hollow fill as an "acoustical maze" to cut down on flyback distortion.(second wave harmonics etc...) In the old days we used a wool composite called kimsul.(don't think it's available anymore as the more modern materials are better anyway.) I use 3M Super 77 spray mount though just about any brand will do.(I've even used low temp hot glue striped onto the cabinet linings to glue down the dacron in a pinch.) |
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