Updated Frugel-Horn Mk3 planset
http://p10hifi.net/tlinespeakers/FH/downloads/frugel-hornMk3-1v0-250212.pdf
dave
http://p10hifi.net/tlinespeakers/FH/downloads/frugel-hornMk3-1v0-250212.pdf
dave
Thanks for the update! Does anyone have these new plans in DWG/electronic format for input into a CNC router? Thanks!
No, not in a CNC yet, but when you are doing transposing them to a cnc , please post them for the rest of us... 😉
Sealing inside enclosure
I generally seal the inside of my cabinets with Bulleye Sealcoat, thin shellac. This hardens the wood surface and I wonder if it will effect the acoustic properties of the Mk3.
I generally seal the inside of my cabinets with Bulleye Sealcoat, thin shellac. This hardens the wood surface and I wonder if it will effect the acoustic properties of the Mk3.
On request i can supply -- and have done -- DWG or DXF of any specific page. Do note that unless you have a 5-axis CNC, a CNC is only useful for doing the sides and the baffle rebates.
dave
It can only work to stiffen the panels and improve things. It won't make MDF as good as plywood.
dave
Dave - Dustin is planning on using 3/4" Plyboo, which is a true 3/4" ( 19.05mm) - I've sketched out a nested pattern for CNC machining, which includes orientation of parts for grain pattern matching. It includes oversize cutting for final sizing of the 4 parts that each require the bevel to at least one end. (the only internal part that doesn't is highlight in turquoise)
There'll still be offcuts for cutting boards etc.
Felt to use
From discussions within this forum, I gather that damping felt should be soft. I am looking at post #65
http://www.diyaudio.com/forums/planet-10-hifi/184088-frugel-horn-mk3-flat-paks-7.html
McMaster has 8845K253 which is F26. Check it out at
McMaster-Carr
or McMaster-Carr and enter 8845K253.
From discussions within this forum, I gather that damping felt should be soft. I am looking at post #65
http://www.diyaudio.com/forums/planet-10-hifi/184088-frugel-horn-mk3-flat-paks-7.html
McMaster has 8845K253 which is F26. Check it out at
McMaster-Carr
or McMaster-Carr and enter 8845K253.
Lokely domething between the Soft & UltraSoft would be suitable, without some in my hand i couldn't tell you which would be most suitable.
I could mail out some traveling samples
Given what the stuff costs from McMaster you might as well just buy the UltraTouch cotton felt from Bob @ CSS ($10 for a 12" x 47.5" chunk... good for FH3 & a couple other projects.
dave
I could mail out some traveling samples
Given what the stuff costs from McMaster you might as well just buy the UltraTouch cotton felt from Bob @ CSS ($10 for a 12" x 47.5" chunk... good for FH3 & a couple other projects.
dave
Dear fellow diy enthusiasts,
I'm under the spell of the vision of building a quadruple stack of frugel-horns, in the style of Ed Schilling's model 3. I will most probably attempt a build like this in a near future. I have a question about the slight backward tilt of the cabinets; if 'stacking' 2 frugel-horns up side down on top of 2 bottom horns, should the tilt be kept? Or is it a good idea to somehow compensate the tilt to make the cabinet front vertically aligned?
I'm under the spell of the vision of building a quadruple stack of frugel-horns, in the style of Ed Schilling's model 3. I will most probably attempt a build like this in a near future. I have a question about the slight backward tilt of the cabinets; if 'stacking' 2 frugel-horns up side down on top of 2 bottom horns, should the tilt be kept? Or is it a good idea to somehow compensate the tilt to make the cabinet front vertically aligned?
Wow!! Dave, thanx for the fast reply and for posting your 3D plans! I will definitely have a go at building these, now that I've seen your plans. Awesome looking and intriguing! I have built Scott's Valiants with Fostex 126En and I am very satisfied with that design. But Ed's model 3 has got stuck in my mind. I see you put a wedge between the lower and upper horns. Elegant solution. I assume that a multiple build like this has been one of the considerations when designing the frugel-horn. Absolutely gorgeous looking speaker! So what drivers would you put in this beast?
Actually just lazy... the target was the 3D not the drawing, so what looks like a wedge is the 2 tops intersecting each other. In practise that would just be a dividing panel, and there would only be one thickness in the middle.
In theory you could get away with none of those internal partitions, but to my mind they go a long ways to ensuring structural rigidity.
dave
Dave, count me in for an Alpha or Beta build. It would be great to be among the first to build a beauty like this! I could begin within a couple of weeks.
FH3 Build
I am about to build a pair of FH3 speakers using MarkAudio CHP-70 drivers. As always I like to document my projects in detail and make them available to others. I am not using rabbits on the first unit, in an attempt to simplify the design. The second will use rabbits and will require a router table. I expect it will take a month to complete the first FH3 and update the blog. I am in the process of cut plywood now.
Frugel Horn FH3 Build Step by Step
I am about to build a pair of FH3 speakers using MarkAudio CHP-70 drivers. As always I like to document my projects in detail and make them available to others. I am not using rabbits on the first unit, in an attempt to simplify the design. The second will use rabbits and will require a router table. I expect it will take a month to complete the first FH3 and update the blog. I am in the process of cut plywood now.
Frugel Horn FH3 Build Step by Step
Those quads look very cool...
Would you need the center partition in the rear?
I would assume single divider panel between the two?
Would you need the center partition in the rear?
I would assume single divider panel between the two?
No. Yes. But you could theoretically get away with no partitions... ie take 4 FH3 missing a side each and no tops and merge them together.
dave