Hi Gentlemen,
I am finally getting around to building a pair of the Wooden Design Redeye speakers which use a single Aurasound NS3 driver. I have the drivers and understand the plans, but am unclear about the damping scheme. The design specifies where the damping material is to be placed and says that Ultratouch 1/2 inch or equavalent material is to be used. I'm wondering if 1/2 inch parts express sonic barrier iowb cekk foam is OK to use since I don't have quick access to Ultratouch 1/2 inch. If not, what is an equavalent material available in the USA?
Also, since the last manifold entry point at the top of the speaker is only 1 inch tall, wouldn't putting 1/2 inch of either Ultratouch or sonic barrier foam overly restrict air flow even though the entry point is 4 inches wide?
And one last question, how does one, "adjust from there if needed." I am eager to see how this design compares to my Pico Neos which use the same driver in a bass reflex cabinet.
Thanks!
Jay
I am finally getting around to building a pair of the Wooden Design Redeye speakers which use a single Aurasound NS3 driver. I have the drivers and understand the plans, but am unclear about the damping scheme. The design specifies where the damping material is to be placed and says that Ultratouch 1/2 inch or equavalent material is to be used. I'm wondering if 1/2 inch parts express sonic barrier iowb cekk foam is OK to use since I don't have quick access to Ultratouch 1/2 inch. If not, what is an equavalent material available in the USA?
Also, since the last manifold entry point at the top of the speaker is only 1 inch tall, wouldn't putting 1/2 inch of either Ultratouch or sonic barrier foam overly restrict air flow even though the entry point is 4 inches wide?
And one last question, how does one, "adjust from there if needed." I am eager to see how this design compares to my Pico Neos which use the same driver in a bass reflex cabinet.
Thanks!
Jay
Syat away from foam. Not very effective. 12mm (1/2”) or so of medium density natural felt (cotton or wool) is best.
Here is the latest used damping equivalency: 1/2in - 1in acoustic fiberglass, SAE-F13 acoustic felt, ultratouch or similar.
dave
Here is the latest used damping equivalency: 1/2in - 1in acoustic fiberglass, SAE-F13 acoustic felt, ultratouch or similar.
dave
I have plenty of fiberglass insulation batts which are 4 inches in thickness uncompressed. Would cutting 1 inch thick pieces to fit in the cabinets and stapling them every couple of inches to attach them work well? I know fiberglass is unpleasant to work with but for such a small quick project I would not mind using it if it is a good way to do the job.
A couple of suggestions when cutting thicker FB batting for this purpose:
-N95 dust mask (might be hard to source presently) and something along the lines of Grease Monkey or similar nitrile gloves;
- serrated bread knife - slices through the 3" batts like, well a hot knife through butter. To be honest, I used to use our electric carving knife, but wife quickly kiboshed that practice.
-N95 dust mask (might be hard to source presently) and something along the lines of Grease Monkey or similar nitrile gloves;
- serrated bread knife - slices through the 3" batts like, well a hot knife through butter. To be honest, I used to use our electric carving knife, but wife quickly kiboshed that practice.
If necessary, look for a natural fibre (wool or jute) based carpet underlay of medium - lower density. At a pinch, bonded acetate fibre aka BAF wadding.
I was able to buy some Poly-fil brand 100% polyester bonded quilting material which is about 1/2 inch thick uncompressed. The package says it is "medium loft". Would this be satiafactory to use, stapled every 2 inches? I think this may be the USA equavalent of
British BAF wadding.
Thanks!
British BAF wadding.
Thanks!
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It is the same as BAF.
Use hot glue to attach. Staples will create a zone without as much damping. You might find a need for more than 1 thickness, but once you ghave sealed the box up you can only physically reach the bit at the front.
dave
Use hot glue to attach. Staples will create a zone without as much damping. You might find a need for more than 1 thickness, but once you ghave sealed the box up you can only physically reach the bit at the front.
dave