was wondering what the rate of rolloff is with a 4th order bandpass box? is it 24db/octave like a regular 4th order crossover?
Hi All
so is this thread dead ??
i have 2 of these also want to use them for added bottom end at the club i work, middle stage on floor have a ton of plans tapped and horn type but everyone says no to that well at least for the horns and the tapped mixed response. love some labs but i like my back and do have to move them out
every so often.
i have a couple plans for reflex but whitch one any help appreciated
plan one is for a paudio12-250n box is called BP12 yes band pass like to make it a double instead of 2 seperate
plan two is kida of like the eaw SBX220 but the ports are on the side so it will sit lower
so what do you guys think??
so is this thread dead ??
i have 2 of these also want to use them for added bottom end at the club i work, middle stage on floor have a ton of plans tapped and horn type but everyone says no to that well at least for the horns and the tapped mixed response. love some labs but i like my back and do have to move them out
every so often.
i have a couple plans for reflex but whitch one any help appreciated
plan one is for a paudio12-250n box is called BP12 yes band pass like to make it a double instead of 2 seperate
plan two is kida of like the eaw SBX220 but the ports are on the side so it will sit lower
so what do you guys think??
lab 12 sub
i plan on build the tapped lab12 project down the road... but for now i believe i am just going to try sealed. i am just going to be using it for home theater.. while the tapped horn is quite large, i feel a couple casters (removable)on the bottom would make quite easy to move.
i plan on build the tapped lab12 project down the road... but for now i believe i am just going to try sealed. i am just going to be using it for home theater.. while the tapped horn is quite large, i feel a couple casters (removable)on the bottom would make quite easy to move.
I still haven't moved an inch on the project. I have the amps, but have not proceeded with buying the drivers yet - the accompanying standmounts have not yet finished, so no sense in crowding the house, so to speak...
Lab12, ~3.3cf
I'm building 2 of these boxes... ~3.3 cf, 4" port x 13" length 😛
3/4" Apple ply is becoming a preferable material to use 😉 The entire box took less than 3/4 of a 4x8 sheet, all CNC machined. everything fits like a sprayed on glove
Top & bottom will have handles, the back will have 3" wheels, bottom 1" rubber feet.
I'm building 2 of these boxes... ~3.3 cf, 4" port x 13" length 😛
3/4" Apple ply is becoming a preferable material to use 😉 The entire box took less than 3/4 of a 4x8 sheet, all CNC machined. everything fits like a sprayed on glove
Top & bottom will have handles, the back will have 3" wheels, bottom 1" rubber feet.
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WOW looks awsome !!!!!!!
cnc too dam i am jelous
any who this is a tapped i built this thing pounds
love to hear and see how yours turn out.
cnc too dam i am jelous
any who this is a tapped i built this thing pounds
love to hear and see how yours turn out.
An externally hosted image should be here but it was not working when we last tested it.
Apologies for the brief thread jack 😱
A 6th order bandpass would roll off at 24Db/octave at it's lower frequency extreme & 12Db/octave at high frequencies.
E2A:- Love the quality of that enclosure build 😀 Oh for a CNC machine.
A 4th order bandpass rolls off at the upper & lower frequencies at 12Db/octave the same as a sealed box.
A 6th order bandpass would roll off at 24Db/octave at it's lower frequency extreme & 12Db/octave at high frequencies.
E2A:- Love the quality of that enclosure build 😀 Oh for a CNC machine.
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@Drumsz
Thank you, it is always fun to assemble parts that fit perfectly & nicely 😀
@event
The CNC is a very nice build, sturdy & accurate. At the time, the choice was Shopbot or TechnoCNC
The CNC is a great tool. 80% of the time is designing & I also 3-D assemble to make sure all the parts fit before bringing into ArtCAM > CNC. 😛
Thank you, it is always fun to assemble parts that fit perfectly & nicely 😀
@event
The CNC is a very nice build, sturdy & accurate. At the time, the choice was Shopbot or TechnoCNC
The CNC is a great tool. 80% of the time is designing & I also 3-D assemble to make sure all the parts fit before bringing into ArtCAM > CNC. 😛
@layertone
Very nice looking work. I'm just getting rolling with CNC for some speaker projects and would love any tips you have.
- I notice you're using mortice and tenon joints such that the overcut from the mill's radius is hidden. What sort of mortice depth and tenon width should I look at using for baltic?
- The braces have a nice radius. Was that done milling both sides or with a router later? If milled, how do you register the piece again once flipped?
- I'll check into ArtCAM. What CAD are you using?
Very nice looking work. I'm just getting rolling with CNC for some speaker projects and would love any tips you have.
- I notice you're using mortice and tenon joints such that the overcut from the mill's radius is hidden. What sort of mortice depth and tenon width should I look at using for baltic?
- The braces have a nice radius. Was that done milling both sides or with a router later? If milled, how do you register the piece again once flipped?
- I'll check into ArtCAM. What CAD are you using?
Thank you Jason! What kind of CNC router, router/spindle do you have & what hold-down method are you using?
The absolute best tip i can give you is use a compression bit! I use 1/4" & 3/8". Searched everywhere & the folks at Centurion Tools price is the lowest & excellent quality. I have it setup to run @ ~ 140 inches / min feed, .25 stepdown
Centurion Tools
I've always used a depth of 1/4" for the dato / "mortise", with pre-drilled holes on the mounting side.
The braces are rounded off with a regular 1/4" roundover on a router table. it's difficult align it back up on the CNC.
ArtCAM Pro is an awesome CAM program (i have the older 7 version). It can do v-bit carving, 3D reliefs & i think even rotary milling as well. I use AutoCAD 2005 for most of the drawings, save it as AutoCAD 2000 format, then import into ArtCAM for programming toolpaths.
😛
@layertone
It's a Dyna CNC 4'x24' machine at a local co-op workshop. They're using Mach3 to control it. I'm not sure how the base plates attach to the machine, but it looks like most people are just using an mdf sheet as a base, then just screwing their work piece down to it. The machine has dogs and various clamps but they seem less popular.
For two sided machining I was thinking I could do something like have the mill drill two registration holes near the edge of the work piece down into the base sheet a bit, then when I flip the work piece I could use dowels through the holes to reposition it back in the same spot.
A compression bit is a downcut bit? Thanks for the tip on a bit source and speeds.
What do you mean by pre-drilled holes on the mounting side?
I'll check out the AutoCAD / ArtCAM combination. Right now I'm playing with trial versions of Solidworks and Alibre. Solidworks looks very powerful but more intended for metal mechanical assemblies. Alibre looks quite good for the price but has quirks. I'd really like to find a CAD/CAM solution that has woodworking specific features like layered construction or automatic cut sheet layout. Cut3D seems to do the layered thing, but not the rest.
There's certainly a lot to learn but I'm so full of ideas of things to do now that I have access to this tool 😀
It's a Dyna CNC 4'x24' machine at a local co-op workshop. They're using Mach3 to control it. I'm not sure how the base plates attach to the machine, but it looks like most people are just using an mdf sheet as a base, then just screwing their work piece down to it. The machine has dogs and various clamps but they seem less popular.
For two sided machining I was thinking I could do something like have the mill drill two registration holes near the edge of the work piece down into the base sheet a bit, then when I flip the work piece I could use dowels through the holes to reposition it back in the same spot.
A compression bit is a downcut bit? Thanks for the tip on a bit source and speeds.
What do you mean by pre-drilled holes on the mounting side?
I'll check out the AutoCAD / ArtCAM combination. Right now I'm playing with trial versions of Solidworks and Alibre. Solidworks looks very powerful but more intended for metal mechanical assemblies. Alibre looks quite good for the price but has quirks. I'd really like to find a CAD/CAM solution that has woodworking specific features like layered construction or automatic cut sheet layout. Cut3D seems to do the layered thing, but not the rest.
There's certainly a lot to learn but I'm so full of ideas of things to do now that I have access to this tool 😀
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