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10F/8424 & RS225-8 FAST / WAW Ref Monitor
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Old 17th January 2020, 06:11 AM   #2101
xrk971 is offline xrk971  United States
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OTOH, it’s not a bad mid range if you want to make a 3 way, or a small 2 way top to go with a sub.
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Old 19th January 2020, 03:09 PM   #2102
Russellc is offline Russellc  United States
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I have a few questions about box assembly for this project. Mainly the "dagger" part that goes with one of the drivers. I see where it gives the dimensions of the parts for the dagger, but no construction/attachment particulars.

If there is another thread explaining this, I've missed it. Any help here would be greatly appreciated! I'm sure it is somewhere based on the numbers of those who are building.

I also have questions about the materials used and where they are obtained. The thread explains the plywood reinforcement, (a type of flooring) but a little unclear on the types of foam core, i.e. regular foam core vs. pink. I also see reference that some panels are doubled up.

As far as size, I like the dimensions X has used, might later try the floor standing version as well.

Again, thanks for any help along these lines1

Russellc
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Last edited by Russellc; 19th January 2020 at 03:11 PM.
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Old 19th January 2020, 03:29 PM   #2103
xrk971 is offline xrk971  United States
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The latest wooden dagger is a 5 sided pyramid about 11in tall. Make trial pieces out of cardboard to check for fit (clearance around driver basket and back of box) then make out of thin plywood. However, it seems easy way is to use a soccer sports cone pylon - links for the particular one from Amazon (others work too) are in thread. Look at Vunce’s latest build it’s there.

I used 1in pink XPS and reinforced baffle with 3/16in ply. Make sure you add internal XPS brace to prevent box from “breathing” under pressure of driver. Dagger needs to be airtight relative to main chamber.

Hope that helps.
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Old 19th January 2020, 04:20 PM   #2104
Russellc is offline Russellc  United States
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Quote:
Originally Posted by xrk971 View Post
The latest wooden dagger is a 5 sided pyramid about 11in tall. Make trial pieces out of cardboard to check for fit (clearance around driver basket and back of box) then make out of thin plywood. However, it seems easy way is to use a soccer sports cone pylon - links for the particular one from Amazon (others work too) are in thread. Look at Vunce’s latest build it’s there.

I used 1in pink XPS and reinforced baffle with 3/16in ply. Make sure you add internal XPS brace to prevent box from “breathing” under pressure of driver. Dagger needs to be airtight relative to main chamber.

Hope that helps.
It helps a lot. I will continue with the thread. How is dagger attached to back of driver? (well, inside of cabinet) Is it air tight, or just setting behind the opening?

Thanks again.

Russellc
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Old 19th January 2020, 05:19 PM   #2105
CraigSu is online now CraigSu  United States
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As X said, “Dagger needs to be airtight relative to main chamber.”
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Old 19th January 2020, 05:33 PM   #2106
xrk971 is offline xrk971  United States
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Industrial adhesive (PL premium, Liquid Nails (non VOC), caulking, etc) if using a plastic sports pylon. Or wood glue if using wood. But doesn’t hurt to deal with bead of caulking on all seams plus the hole where wire comes through. You will know if there is an air leak after it is built if you push on the woofer cone and the full range cone moves out.
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Old 19th January 2020, 10:35 PM   #2107
Russellc is offline Russellc  United States
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Thanks guys, much appreciated.

Russellc
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