Blackmore build... something wicked this way comes!!!!

Hebrew Hammer · « **on:** 8 Apr 2010, 04:33 pm »

Everything was finalized a few days ago... and all material has been purchased minus paint...

Last night I did the rough sketch on mdf and figured out all the dimensions, shapes etc. Later today I will cut guide strips and then off to router land.. I will be making a complete set of jigs for these as I plan on doing a limited run of 26 pairs..

The design changed a little as it always does when you start drawing and designing to scale..

Hebrew Hammer · « **Reply #1 on:** 8 Apr 2010, 07:49 pm »

Exterior routed, now off to start working on the holes and inlay.

Hebrew Hammer · « **Reply #2 on:** 9 Apr 2010, 01:34 am »

After dinner I went back and routed out all the openings

arthurs · « **Reply #3 on:** 9 Apr 2010, 01:38 am »

What's in the name...Blackmore build?

Hebrew Hammer · « **Reply #4 on:** 9 Apr 2010, 01:43 am »

I named them after the first person to try a Lowther on a stick who also happens to be the owner of these

Bob in St. Louis · « **Reply #5 on:** 9 Apr 2010, 04:38 pm »

Wow, cool. Looking good Randy.

Mark has asked me a couple times to come over to his house.
Maybe I will now.

Bob

Hebrew Hammer · « **Reply #6 on:** 9 Apr 2010, 10:33 pm »

Thanks buddy... yeah I am real excited about this build... it will be allot of fun and yes you need to come out when they are finished!!!!

thunderbrick · « **Reply #7 on:** 10 Apr 2010, 12:42 am »

Quote from: Bob in St. Louis on 9 Apr 2010, 04:38 pm

Mark has asked me a couple times to come over to his house.
Maybe I will now.

Bob

Hide your beer, Randy, hide your beer!

BPT · « **Reply #8 on:** 10 Apr 2010, 01:50 pm »

Turn the driver 180 degrees. How are you going to support it laterally?
Chris H.

electricbear · « **Reply #9 on:** 10 Apr 2010, 06:15 pm »

So we have a " Blackmore Build" , will it be long before we see a " Faller Fullrange"?

Hebrew Hammer · « **Reply #10 on:** 10 Apr 2010, 07:51 pm »

Hey Chris!!

what you see above is just the jig that will make the majority of the build which the spine will consist of 5.... 1/2inch pieces of mdf sandwiched together.

what is not shown or built yet is the driver baffle which will only be the exact size of the driver and will be 2.... 1/2inch pieces of mdf sandwiched and the base that will be 3 .... 1/2 inch pieces of mdf sandwiched..

Quote from: BPT on 10 Apr 2010, 01:50 pm

Turn the driver 180 degrees. How are you going to support it laterally?
Chris H.

Hebrew Hammer · « **Reply #11 on:** 10 Apr 2010, 07:53 pm »

He already has that Tim..lol... there are now 2 pairs of his beauties in existence

Quote from: electricbear on 10 Apr 2010, 06:15 pm

So we have a " Blackmore Build" , will it be long before we see a " Faller Fullrange"?

Hebrew Hammer · « **Reply #12 on:** 10 Apr 2010, 07:54 pm »

Thanks for the tip buddy!!!!!!!

Quote from: thunderbrick on 10 Apr 2010, 12:42 am

Hide your beer, Randy, hide your beer!

BPT · « **Reply #13 on:** 10 Apr 2010, 08:58 pm »

Randy:
I still don't get why you have the stand in front of the driver which will reflect everything and alter frequency response and imaging. Hear my song: Turn the driver around....got to have good sound....got to have it...got to have it...(no offense to Vickie Sue Robinson, Laura Branigan or Gloria Estefan).

Chris H.

Bob in St. Louis · « **Reply #14 on:** 10 Apr 2010, 10:30 pm »

Chris,
Please forgive if I'm overstepping my bounds, or simply misunderstanding the build.
But....Looking at the picture I reposted below, this is the profile. The front of the speaker is on the right side, as is the listener. It appears like the driver will be mounted in it's own "little-baffle" and slip into the channel cut at a 90 degree angle. Again, the driver would be at the upper most right corner of the speaker profile shown below.
Think of E.T. the Extra Terrestrial with a driver on his forehead like a "headlight" on a miners helmet.
The driver would then be "front and foremost" in regard to the rest of the speaker.

Randy, if this is out of line let me know.

BPT · « **Reply #15 on:** 10 Apr 2010, 11:15 pm »

Bob:
Look at Randy's sketch.

Hebrew Hammer · « **Reply #16 on:** 11 Apr 2010, 12:22 am »

Even with a very large radius on all the outer edges? The design is to look fast while standing still.. With it having such a small footprint only being 2.5inches wide with a large radius you really feel that I'll have reflection issues?

I can just as easily make 2.. 1 like my sketch and the other with it point the opposite direction.. the large chamfer on the mounting whole will prevent me from just making 1 and flipping it around to listen to either way

BPT · « **Reply #17 on:** 11 Apr 2010, 01:08 am »

Yes, it will have reflections. Now if you designed those reflections to match the high frequency roll-off of the driver, it might be beneficial. I like the design look as well--just in reverse. I'm compelled to to have form follow function. Just throwing in my 2 cents.
Chris H.

Hebrew Hammer · « **Reply #18 on:** 11 Apr 2010, 03:53 am »

went out into the garage to do some mock-ups and if I turned the driver around.. I can address your concerns with any reflection issues but at the same time incorporate a Lambda dipole 12

.......

Bob in St. Louis · « **Reply #19 on:** 11 Apr 2010, 03:06 pm »

Oh I see now.

Seems plainly obvious now.
Not sure how I missed that before, I stared at the sketches and photos for quite a while, but I thought the driver was pointed to the right.

Duh. Sorry 'bout that.

Bob