Vent hole trim?

[CrisTUFR]

Hey guys,

Thought that some of you might be able to help solve an aesthetic problem I'm having with my sub...

I designed it to be forward firing, as well as forward-venting. As a result, the look of the vents contributes to the overall look of the speaker. I plan on using wood veneer on the MDF, and thus routing the hole with a 1/4" roundover bit is out of the question.

What I am looking for is the "trim" piece that they use in hair salons to cover (or more accurately, trim) the holes that they stick the hair dryers and shavers and stuff. Does that description ring any bells? I've seen these in both silver and black colours, and I notice that they come in different sizes as well.

If you know where to get these, or a good place to look (, or an alternative), let me know!

Thanks,
Chris

[Svante]

Are you talking about the "mouthpiece" of an hairdryer? Which way would you turn it? The purpose of the mouthpiece on the hairdryer is to create a concentrated "beam" of airflow. The same would happen in the loudspeaker port, and that is not what you want. If you turn it the other way around things would be better, but then I think the tube would be too narrow for most designs.

What's wrong with flared tubes like this:



?

[Svante]

<Deleted> Sorry, posted twice.

[BobEllis]

home depot and the like have trim pieces for various size holes, although I don't remember seeing them over 3". If you ask for cable guides for running wires through a desk they should be able to help you find them. Usually by trim pieces or hardware

[BillFitzmaurice]

You should check out ducts with flared ends. This will give you a built in escutcheon and they work much better than straight ducts as well. Precision Port is one brand. Parts Express carries them.

[Kermit]

Originally posted by CrisTUFR
Hey guys,

I plan on using wood veneer on the MDF, and thus routing the hole with a 1/4" roundover bit is out of the question.

I did that on my speakers, and i think it turned out allot better then those plastic flared tubes.
I used a roundover bit and spray painted the inside of the port black.

http://www.diyaudio.com/forums/attac...=&postid=71649

[BillFitzmaurice]

Originally posted by Kermit


I did that on my speakers, and i think it turned out allot better then those plastic flared tubes.
I used a roundover bit and spray painted the inside of the port black.

http://www.diyaudio.com/forums/attac...=&postid=71649

Any flare is better than no flare, but the Precision Ports have a much larger radius and therefor work better. They also flare at the duct entrance, which is almost as useful at the flare at the exit in preventing port turbulence and power compression.