The Blackmores- A Crazy Lowther build...

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Delivered and hooked up but only got a 45 minute session in with some minor tuning and placement as the client is leaving for Chicago in a few minutes

But all I can say is that I have only gotten goosebumps 3 times from a home audio setup and this was one of them... more listening scheduled for Wednesday night!!!

xovered at 260 @48db

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So after a night or 2 of tweaking and tuning, the Blackmores are one of the most emotionally involving speakers I have ever heard as verified by the goosebump test..lol But I have sat in front of countless rigs in my life and very few have given me as much pleasure... Can't wait until the new 2way is completed!!!
 
amazing craftsmanship!! i love the design, i can't take my eyes off them.

somebody might have suggested this already but have you considered mounting the frame to the magnet only?

Thank you!!!

the issue with trying to create a magnet solution is that is has a slight taper which prevents a solid mount.. I could possibly take a mold of the magnet but going forward a piece of 1/8 or 1/4 inch piece of aluminum will be used if I can find a local water jet shop that offers a decent price..
 
Beautiful work!

Going back to the beginning of the thread, would you be willing to share some detail on how you cut out the spine pieces? Template and router?

I have only done a laminate type design one other time and it was quite a pain...

Thanks and again those look great!

Tim
 
Thanks both of you..

in regards on how I go about building my pieces.. I typically do a sketch on paper first and from there take an engineer approach to how each section of piece will be built..

From there I will draw a very rough sketch on mdf to scale and then clean up the lines via jigs that I have made, straight edges I have kept from previous pieces of mdf or I'll cut 1/2 wide strips of 1/4 mdf and with air nailer will bend the 1/4 in gentle arcs taking ever 2 inches or so..

Or, my favorite tool is the flexible arc :)

adjustable curves

and then rough cut with a jig saw to less then half the width of the diameter of bit used and go to town on a table router..
 
Do you use a spray or a paint on... sanding primer near the beginning after the general build. What kind?

I am inclined to do a build with the Feastrex Alnico driver.

Lovely...simply lovely...


Phil
Santa Fe

Build your own gear
Grow your own food...

Thank you!!!

the final step before I drop them off at the painters, is to do 2 coats of a high build filler/primer called Slicksand.. I spray it with a HVLP gun using a 1.8 tip and is a 2 part product.. It should be mixed a 2oz material to 1cc of catylist.

the first coat is laid down pretty thick. i then spend a fair amount of time block sanding with 220 grit DA paper. The second coat is a light finish coat that I will scuff down with a red scotch bright pad..

after that it's ready to paint
 
I remember an old product called Featherfill I used some years ago...

I am inclined to build a version using rock maple... shellac and rubbed varnish then maybe apply a nice front loaded horn to the whole thing???




Build your own gear
Grow your own food

Phil featherfill is a great product and is really easy to sand but has a tendency to shrink over time.. Slicksand, if mixed right will never have a problem.. plus it builds better and seals the cut edges better as well..

in regards to the front loaded horn.. don't.. as this application was specific in 0 coloration.. I'm not a fan of any horn period and IMO would be going in the wrong direction.. IMO, this is some of the best midrange and emotional playback I have heard in 16 years of listening to hifi
 
yes, actual measurements would be interesting.
even just polars, not just on axis, if not impulse...
i am interested as to what makes this "some of the best midrange" to Randy.
maybe just different tastes, maybe something concrete that i'm missing...

i tried pm6a, hanging from string, found mids / highs downright unlistenable...
very colored, not worth measuring.
much nicer sounding with 160 Hz Le Cleach horn.
worth building mold for and pursuing, if i were to pursue anything with lowther drivers...
 
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