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

[fastbike1]

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

Then you're definitely not going to be able to afford to read everything you'll need to design and build your speakers and crossovers.

Especially since you couldn't afford to read the Speaker Building Bible sticky. :rolleyes:

I really apologize if this has been posted before, but I really can't afford to read through 13 pages of this post to find all this information! Anyways,...

!!

[XtremeRevolution]

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

If using 3/4" MDF all around for the floorstanding .55 cubic foot design for the ntn's, would bracing be required?

[Drew_V]

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

Ditto on the receipt of parts. My, aren't those some little drivers? My 4 yr old daughter really loved the small boxes the tweets came in.

I'm going with the original 6 element xover and probably won't get too creative on the box. You'll probably still have yours built before mine!

Same here. Ditto on the 6-element crossovers. Got them assembled on 3x4 boards. Pretty sure I can't get my hand through the woofer cutout, though, so I'm not sure it really matters how small you can make the board.


Just FYI to you or anyone else out there building these speakers, I went to my local Home Depot and they have all sorts of scrap 1.5" PVC in the plumbing aisle. They cut down larger pieces for people and end up with boxes filled with short 1- or 2-foot lengths. I asked the sales person if I could have one and she said she would would have to charge me the "per foot" cost.... which ended up being a whopping 56 cents for the 18-inch piece that I picked out of the box.

[Herman Trivilino]

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

I asked the sales person if I could have one and she said she would would have to charge me the "per foot" cost.... which ended up being a whopping 56 cents for the 18-inch piece that I picked out of the box.

You could have gotten her to cut them to the exact length you needed, too.

[cwad8505]

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

Same here. Ditto on the 6-element crossovers. Got them assembled on 3x4 boards. Pretty sure I can't get my hand through the woofer cutout, though, so I'm not sure it really matters how small you can make the board.


Just FYI to you or anyone else out there building these speakers, I went to my local Home Depot and they have all sorts of scrap 1.5" PVC in the plumbing aisle. They cut down larger pieces for people and end up with boxes filled with short 1- or 2-foot lengths. I asked the sales person if I could have one and she said she would would have to charge me the "per foot" cost.... which ended up being a whopping 56 cents for the 18-inch piece that I picked out of the box.

Well.. I have a unique situation in ref to PVC.. Built a house 3 yrs ago and plumber left all of leftover PVC here.. I have prob 200' of diff diameters hanging from the basement ceiling...:D (remembered this after I went and bought some for my last project.. lol) I hope to get the MDF cut Sunday.. knowing me, I'll prob have them testing Mon eve ;)..then the 50 days of painting.. well, at least it feels that way sometimes.. Good Luck Gents!

[fastbike1]

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

The sides are long enough that it wouldn't hurt to put a couple of braces in. They don't need to be elaborate. Dowel or strips will be fine.

If using 3/4" MDF all around for the floorstanding .55 cubic foot design for the ntn's, would bracing be required?

[DIYNut42]

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

Got started on my Nanos yesterday! Had to call PE though due to one of the resistors being broken almost in half. By the time it gets here I'm hoping to be half done. I will make a thread when I get time.

[XtremeRevolution]

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

The sides are long enough that it wouldn't hurt to put a couple of braces in. They don't need to be elaborate. Dowel or strips will be fine.

Alright, I'll do just that and compensate for the volume by adding height.

I'm at a slight dilemma. I was just offered $300 for my pair of Polk Audio RM40T's. These retailed for $1150, but I got them for significantly less. These NTN's are costing me roughly $175 with everything included. If I sell the RM40T's, I can build two pairs of these for nearly the same cost; one for my father in law and one for myself.

What would you guys do? Have any of you even heard the RM40T's to compare to these?

http://www.polkaudio.com/homeaudio/products/recent/rm40t/

[cliffburge]

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

Well I got the my version of the ntn's built for a center channel and of course it too sounds good. It is ported with the port on one of the sides. It is built with the newest crossover from Chris's album. I set it up and moved around the room and the off axis seems good to me- probably everyone will be able to hear the center channel. It is so wide because there was not too much depth where I had to put it. The port is in the left hand side, and it has a removable panel on the back on the right to access the crossover... Ohh and don't mind my temporary wiring mess.......



Cliff

[Chris Roemer]

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

Well I got the my version of the ntn's built for a center channel and of course it too sounds good. It is ported with the port on one of the sides. It is built with the newest crossover from Chris's album. I set it up and moved around the room and the off axis seems good to me- probably everyone will be able to hear the center channel. It is so wide because there was not too much depth where I had to put it. The port is in the left hand side, and it has a removable panel on the back on the right to access the crossover... Ohh and don't mind my temporary wiring mess.......



Cliff

I had to chuckle when I saw how you canted the woofers, but your layout seems very logical. How high is that box, and could it have been even less?

[ericJ]

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

Started laying out my xover parts tonight on a board and discovered one set of caps was picked incorrectly @ PE. The 10uF cap bag had 8uF caps in it. I've already contacted PE by email to exchange. I think I can go ahead and finish the layout.

Anyone have a completed pic of the 6 element XO? As mentioned before, this is my first time putting one of these together. I have read and reread the sticky links on crossovers and viewed a bunch of other info, but I still want to see a finished one before I start soldering.

I really like the way Chris mounted his original 5 element xover on the first page of the thread. How did you get the leads so neatly bent? I like how the leads go down through the board and the nodes are hidden beneath it. No one will see these once they are done, but hey, I know what lies beneath!

[Herman Trivilino]

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

Started laying out my xover parts tonight on a board and discovered one set of caps was picked incorrectly @ PE.

In the bag I've got that was supposed to contain four 4.0 µF caps, there were only three plus a 3.3 µF cap. Called PE on Monday and received the replacement by FedEx today.

The trick to bending the wire lead is to clamp it with a pair of pliers and then bend it over with your finger.

I'm not sure how much a photograph of a crossover board would be able to help you. For example, if you look at the one you mentioned, you can't really tell how the wires are connected. My advice is that you make a sketch of how you've got yours hooked up and post it here so we can see it.

[MLS]

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

I have been struggling with the dampening aspect to this build. I currently have @ 2"thick egg crate style foam wedged full width of the cabinet on the back panel and about half of the top and bottom panels and 1/2" carpet padding on the side panels. I am thinking the 2" foam may be to thick?
and may be I should try just carpet padding all the way around and maybe play around with adding and or subtracting different amounts of poly fill behind the drivers I also have plenty of regular fiberglass insulation. Another option may be some carpet or I could break down and get some thinner egg crate foam from a fabric store.

I want to try to figure this out because as soon as I glue the cabinet together I am not going to be able to do much through the 3 5/8" woofer opening.

Any suggestions?

My wife is going to pick up some 1" thick polyfill at a fabric store for me today.

MLS

[Drew_V]

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

Started laying out my xover parts tonight on a board and discovered one set of caps was picked incorrectly @ PE. The 10uF cap bag had 8uF caps in it. I've already contacted PE by email to exchange. I think I can go ahead and finish the layout.

Anyone have a completed pic of the 6 element XO? As mentioned before, this is my first time putting one of these together. I have read and reread the sticky links on crossovers and viewed a bunch of other info, but I still want to see a finished one before I start soldering.

I really like the way Chris mounted his original 5 element xover on the first page of the thread. How did you get the leads so neatly bent? I like how the leads go down through the board and the nodes are hidden beneath it. No one will see these once they are done, but hey, I know what lies beneath!

In the bag I've got that was supposed to contain four 4.0 µF caps, there were only three plus a 3.3 µF cap. Called PE on Monday and received the replacement by FedEx today.

I'm not sure what's going on with PE, but they did the same thing with my order. I got an 8uF instead of a 10uF. Sure, they were quick to rectify the problem, but they have made errors in all 3 out of my last 3 orders where parts were incorrect. I love their customer service, but I just wish I didn't have to rely on it every time I place an order.


And here's a picture of a completed 6-element crossover. I didn't connect the power or driver leads yet, but the layout picture shows you where to attach them (ignore the scribbles). My plan was to run the wires under the board, then zip-tie them to the boards through the holes, then run the wire ends around the edges and solder them to the connection points.

[ericJ]

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

In the bag I've got that was supposed to contain four 4.0 µF caps, there were only three plus a 3.3 µF cap. Called PE on Monday and received the replacement by FedEx today.

The trick to bending the wire lead is to clamp it with a pair of pliers and then bend it over with your finger.

I'm not sure how much a photograph of a crossover board would be able to help you. For example, if you look at the one you mentioned, you can't really tell how the wires are connected. My advice is that you make a sketch of how you've got yours hooked up and post it here so we can see it.

Here is a pic of the top side. I stayed up late last night doing some studying and I have the connections right. I will take the parts off the board and clamp the board to another piece and drill out the holes. Once the replacement 10uF caps come, I'll solder it all together. I'm happy with it for my first time.