on Sale - $55/pr (drivers & XO)

[cwad8505]

Re: on Sale - $55/pr (drivers & XO)

1.5" baffle?? WOW.. that's thick! Be sure to get the back chamfered well so those ND's can breathe.
Also, quick update on my ntn's.. well, same story.. still haven't got them back from buddy...he says maybe tomorrow. Killin me.. just killin me. On a lighter note, BAMTM's are almost complete..start finish coats tomorrow!
Chris W.

[nick650]

Re: on Sale - $55/pr (drivers & XO)

Dimensions: 22 x 8 x 9

I made it so I have 1.5 baffle and 1.5 for the back, so technically I now have 2" for the port from the wall. I also am getting it CNC'D for a very good price. I decided 2" from the top will be the first woofer and then tweeter then woofer. Back side will have the speaker post low as possible and then 1" above it will have the port. ALL things being mounted will be recessed and flush mounted. I will also have a vertical brace and behind the speaker the mounts will be rounded over. I should get all this by next week. Then I got to paint it sometime down the line as well.

Thank you all for your help!

[isaeagle4031]

Re: on Sale - $55/pr (drivers & XO)

My 2" ID port is only 1.5" from the back wall and even at xmax, I can not detect any audible port noise. I don't have any dampening material by the port though. And the port is about 45" from the drivers

[Chris Roemer]

Re: on Sale - $55/pr (drivers & XO)

With regards to depth, I would make sure you have at least 2" of clearance between the flare and the wall. You would typically give urself at least as much clearance as is your port diameter. If I assume that your double flared port will be a total of 8" and you are using 3/4" material, then your port will extend into your enclosure 7 1/4", in which case, I'd make sure to have at least 9 1/4" of internal depth.
Edit: Don't forget dampening material! If you are using some sort of dampening material, make sure to have clearance from that as well, which I assume will push your depth back a couple more inches.
Chris

It wouldn't bother me to have only 1.5" of clearance between the internal end of that port and the inside of the cab. If the fit is tight, don't put any foam lining directly off the end of the port, so it can still breathe.

Chris

[nick650]

Re: on Sale - $55/pr (drivers & XO)

DOUGH! You are right! I just sent of the document to be looked at to get it built for me.... RRRR....

Thanks

[cwad8505]

Re: on Sale - $55/pr (drivers & XO)

THANK YOU very much you 2! I appreciate it! Of to figure my dimensions and get this sucker built!

I will make my box with a depth of 9 to fit it.

With regards to depth, I would make sure you have at least 2" of clearance between the flare and the wall. You would typically give urself at least as much clearance as is your port diameter. If I assume that your double flared port will be a total of 8" and you are using 3/4" material, then your port will extend into your enclosure 7 1/4", in which case, I'd make sure to have at least 9 1/4" of internal depth.
Edit: Don't forget dampening material! If you are using some sort of dampening material, make sure to have clearance from that as well, which I assume will push your depth back a couple more inches.
Chris

[nick650]

Re: on Sale - $55/pr (drivers & XO)

THANK YOU very much you 2! I appreciate it! Of to figure my dimensions and get this sucker built!

I will make my box with a depth of 9 to fit it.

[Herman Trivilino]

Re: on Sale - $55/pr (drivers & XO)

Still doesn't help me with my situation and yes that is what I bought.

All I know is I got 7" streight tube and then about another 3" that is included by the flairs and this is the straight part of it and not the flared bit.

According to the description it has, when assembled, a maximum length of 11 inches. Assuming what I said in my previous post is correct, you would make it three inches shorter, so that the overall length is 8 inches.

The description states that the "central tube can be cut to any desired length". So, cut three inches off of it!

[cwad8505]

Re: on Sale - $55/pr (drivers & XO)

Still doesn't help me with my situation and yes that is what I bought.

All I know is I got 7" streight tube and then about another 3" that is included by the flairs and this is the straight part of it and not the flared bit.

8" when the port is assembled with flares from end to end. This is due to the flared portion not actually counting as the length of the port. Assemble it as it is from PE, measure the length from end to end, then cut off of the tube whatever you need to to get to 8" total length, then glue it up and you're off to the races. Also, don't get too hung up on it having to be "exactly 8", if it's off a 1/4" or even a 1/2", its not the end of the world, will only change a couple Hz either way. Hope this helps, Chris

[nick650]

Re: on Sale - $55/pr (drivers & XO)

Is this the part you bought?

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=268-348

I played with the manufacturer's on-line calculator (see first PE customer review) and it appears that a 7-inch straight port is equivalent to their flared port tube cut to an overall length of 8 inches.

I don't think it's critical, though.

Still doesn't help me with my situation and yes that is what I bought.

All I know is I got 7" streight tube and then about another 3" that is included by the flairs and this is the straight part of it and not the flared bit.

[Herman Trivilino]

Re: on Sale - $55/pr (drivers & XO)

I bought the Precision Port 2" Flared Port Tube Kit and need help figuring out how much of it do I keep or cut.

Is this the part you bought?

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=268-348

I played with the manufacturer's on-line calculator (see first PE customer review) and it appears that a 7-inch straight port is equivalent to their flared port tube cut to an overall length of 8 inches.

I don't think it's critical, though.

[nick650]

Re: on Sale - $55/pr (drivers & XO)

I bought the Precision Port 2" Flared Port Tube Kit and need help figuring out how much of it do I keep or cut.

"The vent should be 2"id x 7" total length, positioned 9" up from the bottom, on the rear of the cabinet. This tunes the box to 42 Hz."

The flared pieces have straight pieces as well about 1.5" from the flair piece.

Box is .56 cube and is the NTN version I'm doing this for.

[Chris Roemer]

Re: Mr. Bill thinks about jumping (for joy) . . .

Any carpenter with a cabinet shop could do it. Any carpenter who doesn't have a shop or is not inclined to do it would likely know of one who would.

after hearing the Nano Neos.

That's a nice story, Herman. Bet you'll have some students wanting help to "replicate" your ntns.

Chris

[Herman Trivilino]

Re: on Sale - $55/pr (drivers & XO)

X-over is done but now need to find a box builder to help me build my box as I don't have the tools :(

Anyone know of one that is in California near or around SF?

Any carpenter with a cabinet shop could do it. Any carpenter who doesn't have a shop or is not inclined to do it would likely know of one who would.

[nick650]

Re: on Sale - $55/pr (drivers & XO)

X-over is done but now need to find a box builder to help me build my box as I don't have the tools :(

Anyone know of one that is in California near or around SF?