port grill custom manufacturing company?

[skyfly]

Any company custom-building grills for loudspeaker ports?

Some home hi-fi loudspeakers have ports at the back that are large enough for rats and small cats to pass through.

(I am not asking about port blockers that transform the loudspeakers to sealed-box loudspeakers.

(The port grill does not have to be exactly like the one in the picture below. It could bulge out from the enclosure surface to allow pressure relief before the sound hits the grill surface.)

 

[sam_adams]

large enough for rats

If you have a concern about rats getting into your speakers through the port, you don't need a grill or screen—that the rat will chew through anyway—you need this:

 

[BeeKay]

If it’s not about rodents but more of an aesthetic approach, how about a different device?

 

[Sokel]

Hit "speaker port grill" at goggle, you'll find a gazillion of them, plastic, metal, fabric, etc.

 

[skyfly]

Hit "speaker port grill" at goggle, you'll find a gazillion of them, plastic, metal, fabric, etc.

I did Bing search. "speaker port grill" gives plenty of web sites for "speaker grill"

 

[kemmler3D]

To @BeeKay s point, it would be almost trivial to design and 3D print a little grating that press-fits inside a port. As long as you are not worried about a would-be intruder pulling the insert out, I think it would serve the purpose of excluding rodents and such. You could do the same with a cloth face, but assembly would be trickier.

It's highly likely you can get such a thing printed locally, for the design I think you just need a rough sketch, an accurate measurement of the port diameter, and someone with CAD skills.

 

[terryforsythe]

Anything covering, or insterted into, the port will change the port tuning. The more restrictive the object is to the airflow, the greater the change.

 

[DVDdoug]

On the back, if nobody is looking at it, I'd just staple a metal screen or "hardware cloth" over it.

Otherwise a small speaker grill (not necessarily a port grill) that's larger than the port should look OK.

 

[EERecordist]

For questions like this, I do a search, then look at images. You will see it spelled grill and grille. Tweeters will have similar diameters to ports.

For instance https://www.google.com/search?q=tweeter+grille&oq=tweeter+grille

 

[Zek]

Maybe something like this

 

[Heinrich]

Anything covering, or insterted into, the port will change the port tuning. The more restrictive the object is to the airflow, the greater the change.

Every practical grille will most probably generate wind noises.

 

[Penelinfi]

If you can find some Logitech z337 z333 for really cheap and your port is the correct size of roughly 9cm, you could take the grills from these (they are press fit)

Alternatively, you would think that someone can 3D print / make up a custom pair for your speakers, maybe on a site that offers tasks for $ eg fiver.

If you can open the speaker yourself, you could wrap some fine, open mesh over the inside entrance of the port. Some cheap speakers have port netting , similar to butterfly netting, but even finer strands I think.

 

[CJPopovich]

This is a valid concern. On my computer desk subwoofer station (the "bass station"), an 8' x 3' piece of butcher block is the desk, and it is held up by two 15" subwoofers in ~7.5 cuft enclosures tuned to 15.5hz with 6" diameter precision ports. The problem is Steve.

Steve is one of my cats, and considered the enclosure a second home, maybe a time share. I couldn't keep him out of it. Turning up the bass while he went there seemed like a good idea until I saw he wasn't leaving and the woofer excursions lead me to back off for fear of ill treating an animal I love. So Steve out played me, until I asked one of my guys in the development shop to print me a damned screen that would fit inside the port, tapered like a plug, and stop Steve from Steving, but have minimal impact on airflow.

I put that in maybe 8 months ago. Steve still checks the integrity of it at least 3-4x per week but my speakers are Steve-free.

Chris