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My Classix II build

Posted: Thu May 11, 2017 7:16 pm
by dcairns
My first try at this, but I am handy with soldering and a bit of wood work, so it has not been too difficult.  
Biggest lesson learned so far:  Don't try it with your hand held circular saw, go ask the neighbor to use his table saw and do it right!  :D

I plan to use walnut veneer on the outside, except the front, which will be black paint and have a black fabric grill on them.  I am trying for the 70's look.

The crossover was easy enough. I used the sticker since it makes nice built in (aka 'never gets lost')  documentation, in case service is ever needed someday.
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Made my own router circle cutter and got good enough results for the part of the hole that shows.  I just used my jig-saw for the hole the speaker goes through.
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After doing some tests on scraps with deck screws, I started to wonder if MDF was all that great of a choice.  But I researched how to screw up MDF without screwing up  ;)  and discovered that they make special screws just for MDF.  They worked great, except for one that I put in a bit crooked and it cracked the MDF.  I just wood glued and clamped the injury and put a new screw nearby.  After successful dry assembly, I took it all apart and reassembled with wood glue and some small strips of scrap MDF braces on the long corners.
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Since I did not initially use the neighbors table saw, my boards were a bit "off" which lead to some minor alignment issues when assembling.  But some wood filler takes care of that.
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And I had to do a quick test run just to hear them a bit  ;)   They do sound sweet, and as per spec, they are not very efficient at 86db 1W/1m.  

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Re: My Classix II build

Posted: Mon May 22, 2017 7:27 am
by Reede
Excellent. That will look great when it's painted. I bet it sounds good too.

Re: My Classix II build

Posted: Wed May 24, 2017 9:45 pm
by dcairns
Actually, I am going to try to veneer them.  I am off on a rabbit trail of learning on that topic ;D.  Glue, glue and ironed on, contact cement,  paper backed, raw, wood backed.  Lots of stuff to consider, and lots of strong opinions lol .

Re: My Classix II build

Posted: Tue Jan 30, 2018 10:37 pm
by dcairns
Getting back to my speaker project, after my doctor turned me into a mushroom with blood pressure medications.  
I have stained the front black, hoping it soaks in a bit so the MDF won't show if scratched.  I am now applying wood grain formica as the veneer.  So far it is pretty easy to do.  I use my router to trim the excess off for a clean edge.
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Re: My Classix II build

Posted: Wed Feb 07, 2018 8:39 pm
by dcairns
Sides all veneered and shaping the grills.
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Some paint over the black stain to get a nice flat black look.  I didn't get a photo of it, but I did put the self adhesive foam damping material in there.
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And  now all assembled!  Just need to finish the grills.
These speakers will be paired with the Marantz SR 4000 you see in the background.
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Since these speakers will be paired with the Marantz receiver, I have badged them with some home made Marantz emblems (with apologies to Paul Carmody).  
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The deception is minor, as the truth is on the back.

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Re: My Classix II build

Posted: Sat Feb 10, 2018 12:39 am
by dcairns
All finished and they sound great with my Marantz SR-4000 !

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Re: My Classix II build

Posted: Sun Feb 11, 2018 10:44 am
by Bill Schneider
Nice job! I like the grill treatment you chose. And the Marantz, of course. :-)  It's a great looking combo and reminds me of the stereos of my youth.

How did you create the label for the back?

Re: My Classix II build

Posted: Sun Feb 11, 2018 8:03 pm
by dcairns
I bought some some full sheet (8.5 x 11) Matte Silver Labels from Amazon.   You can print them on a laser printer.
"Mr-Label® Extra Large Full-Sheet Matte Silver Label Adhesive Labels – Scratchproof Waterproof Stickers for Company Information | Wine Bottle - Laser Print Only (25 Sheets)"  currently $12.  
There are also die cut labels available in various sizes.  I just cut mine with a roller paper cuter and trimmed the corners with a little hand punch that gives rounded corners to paper.

I printed the Marantz logos the same way, and put them on some bits black plastic sheet.  Kinda fussy work sanding them down so size as the plastic warps a bit with heat from my belt sander.  Hand sanding was easier as I got them close to the size. And just glued them on with a dab of glue to the grill.