port to close to speaker box wall?

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Jason Walter - 31 Dec 2003 19:48 GMT

I am building a box where the port needs to be 9" long. My max inside
dimension is 11". Will that put the port too close to the box wall to allow
adequate airflow?

The application is not car audio. Actually, home audio. A custom cabinet
company built a cabinet to the wrong width/depth dimensions of a speaker.
This made it impossible for the speakers to fit in the cabinet. After much
searching, we found that no comparable speakers will fit.

The cabinet guy decided to rebuild the speaker cabinet to new dimensions,
but keep the interior volume. Everything should work as long as I can deal
with the port issue.

Thanks,
Jason

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TomTom - 31 Dec 2003 20:10 GMT

There are companies that make flexible tubing for ports.

-T

> I am building a box where the port needs to be 9" long. My max inside
> dimension is 11". Will that put the port too close to the box wall to allow
[quoted text clipped - 11 lines]
> Thanks,
> Jason

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Paul Vina - 31 Dec 2003 21:14 GMT

And you can have the port stick out of the box as well. It doesn 't have to
be flush with the box.

Paul Vina

> There are companies that make flexible tubing for ports.
>
[quoted text clipped - 21 lines]
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.555 / Virus Database: 347 - Release Date: 12/23/2003

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Scott Gardner - 31 Dec 2003 21:20 GMT

In all the box specifications I've seen, you're supposed to treat the
volume of any ports as solid objects when it comes to calculating the
airspace inside the box. If you were to move a significant portion of
the port outside the box, you'd need to make the rest of the airspace
inside the box smaller to compensate, right? (Not that I'm suggesting
he re-build the box if he decides to have an inch or two of the
protruding outside of it).

I was thinking more of a case where you might want to have the ENTIRE
port outside the box, perhaps to route it from the trunk to the
passenger compartment.

Scott Gardner

>And you can have the port stick out of the box as well. It doesn 't have to
>be flush with the box.
[quoted text clipped - 30 lines]
>> Checked by AVG anti-virus system (http://www.grisoft.com).
>> Version: 6.0.555 / Virus Database: 347 - Release Date: 12/23/2003

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