Wow, those new PE ports are

[paul_n_oneal]

expensive. I just added 2 inner and 2 outer flares, 2 elbows, and 2 straight pipes for a grand total of $46.40 and that don't include shipping. Two 4" precision flare ports without an elbow costs $27.80. Now I may be wrong but plastic is cheap and easy to make. So, I guess I'll be scrounging around plumbing worksites and try to get what I need. Either that of buy the precision ports and make my box deeper. It just irks me that a piece of plastic costs that much. My morning rant.....

[dancarroll]

If you have ever used the PE vinyl, the cardboard tubes it is wrapped around will work too. They are pretty thick. I would not want to use one for a front port (due to appearance), but for a rear port they would work fine.

[paul_n_oneal]

> If you have ever used the PE vinyl, the
> cardboard tubes it is wrapped around will
> work too. They are pretty thick. I would not
> want to use one for a front port (due to
> appearance), but for a rear port they would
> work fine.

I was wondering if any hobby shops here in town carry 4" paper tubes. I had an old pioneer speaker about 30 years old that had a cardboard port. Surely paper is cheaper :-).

[spence]

> I was wondering if any hobby shops here in
> town carry 4" paper tubes. I had an old
> pioneer speaker about 30 years old that had
> a cardboard port. Surely paper is cheaper
> :-).

Stop at Staples or other business supply store and look at their shipping tubes.

[paul_n_oneal]

> Stop at Staples or other business supply
> store and look at their shipping tubes.

Thanks, I'll do that on the way home.

[daneo]

[dancarroll]

> Thanks, I'll do that on the way home.

And of course you can alway buy a 10 foot length of PVC pipe at Lowes etc. You can also get elbows to fit there. You will pay something for it, but less than $50 for sure, and will have enough pipe for several projects.

[Mr.Thomas Aaron Hero]

> I was wondering if any hobby shops here in
> town carry 4" paper tubes. I had an old
> pioneer speaker about 30 years old that had
> a cardboard port. Surely paper is cheaper
> :-).
I use ABS,PVC and even alumunum irregation pipe,I cant see any reason to use paper tubes when ABS and PVC are available everywhere.When I need a longer tube than will fit in my cabs I use a long sweep for the entire length,you can get them in 33,45,90 degree bends and are usualy long enough that you can cut them to length.A.H.

[danmarx]

I thought the new ports looked really cool, but they missed the mark on the elbow, the bend radius is way too tight. Most people don't even like to use elbows since they can add to port noise, and with a sharp 90 degree bend like that, it doesn't help matters. They should have done a swept 90 degree elbow, something similar to what you can find in 3" and 4" PVC. The air flow is much less restricted and the ill effects of using an elbow are greatly reduced. Other than that, the flares look pretty cool.

[paul_n_oneal]

I wonder if one of those 4" outside flares would fit onto a 4" PVC pipe?

[curt_c]

> I wonder if one of those 4" outside
> flares would fit onto a 4" PVC pipe?

Sure they will...

Actually I suspect the answer is 'not without some modifications', as that is the case for the 3" when I asked. That said, I'm sure one could McGivver something together with epoxy and duct tape...

I've got some 3" on order. I'll let you know if these are "adaptable" or not...

C

[aricaudio]

> I thought the new ports looked really cool,
> but they missed the mark on the elbow, the
> bend radius is way too tight. Most people
> don't even like to use elbows since they can
> add to port noise, and with a sharp 90
> degree bend like that, it doesn't help
> matters. They should have done a swept 90
> degree elbow, something similar to what you
> can find in 3" and 4" PVC. The air
> flow is much less restricted and the ill
> effects of using an elbow are greatly
> reduced. Other than that, the flares look
> pretty cool.

Dan, They also make 45 degree angles in most of the PVC sizes.

Aric

[paul_n_oneal]

> Sure they will...

> Actually I suspect the answer is 'not
> without some modifications', as that is the
> case for the 3" when I asked. That
> said, I'm sure one could McGivver something
> together with epoxy and duct tape...

> I've got some 3" on order. I'll let you
> know if these are "adaptable" or
> not...

> C

thanks curt, i'll probably order some 4" and see what i can come up with.

[kevinb]

> expensive. I just added 2 inner and 2 outer
> flares, 2 elbows, and 2 straight pipes for a
> grand total of $46.40 and that don't include
> shipping. Two 4" precision flare ports
> without an elbow costs $27.80. Now I may be
> wrong but plastic is cheap and easy to make.
> So, I guess I'll be scrounging around
> plumbing worksites and try to get what I
> need. Either that of buy the precision ports
> and make my box deeper. It just irks me that
> a piece of plastic costs that much. My
> morning rant.....

Possibly a nice look for decent price, but no 4" port available yet.

<A HREF="http://www.able-audio.com/shop/produ...0005dc01a9711a">http://www.able-audio.com/shop/produ...0005dc01a9711a</A>

[curt_c]

Back in the day, I used 4 of the 2" version on my Weber carbs. -I noticed no chuffing at any RPM. ;^)

C

[bogie]

...and I'm thinking of actually using a few... They're 2" (either ID or OD, I dismember) and very consistent in size - and 44" long. I'd bet that it'd be a fairly simple thing for a large box to have them all exit at the back rear, and just undercut the rear a little. Hmm... With a Q15, six of 'em provides more cross area than a single 4" tube (assuming 1.75" ID), and they only have to be about 12.5" long. Could be cool looking...

[richjura]

You dog....I always dreamed of a Cobra Replica with a 5Litre Ford
motor running 4 Weber side drafts under the hood.
There's nothing prettier.

Later

Rich

[kevinb]

> Back in the day, I used 4 of the 2"
> version on my Weber carbs. -I noticed no
> chuffing at any RPM. ;^)

> C
I wasnt trying to change the topic but try this.

<A HREF="http://www.1962to1965mopar.ornocar.c...vre65ply7a.jpg">http://www.1962to1965mopar.ornocar.c...vre65ply7a.jpg</A>

[curt_c]

> You dog....I always dreamed of a Cobra
> Replica with a 5Litre Ford
> motor running 4 Weber side drafts under the
> hood.
> There's nothing prettier.

I agree, -Except maybe this:
Picture it with a chromoly frame and a 3 liter 911 engine w/ a pair of Weber 46IDA3's on it...

-Who am I kidding? I wouldn't even fit in it anymore!

C

[curt_c]

> I wasnt trying to change the topic but try
> this.

>
> <A HREF="http://www.1962to1965mopar.ornocar.c...vre65ply7a.jpg">http://www.1962to1965mopar.ornocar.c...vre65ply7a.jpg</A>

It seems many speaker DIY'ers are motorheads too, huh?
See post above for another purdy picture...

C