The neverending 1x15 cab project - almost done

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Dave_P
Posts: 364
Joined: Fri Oct 15, 2010 9:11 am
Location: Rhode Island, United States

The neverending 1x15 cab project - almost done

Post by Dave_P »

I started this project last November and between new baby and climate conditions in my workshop (the yard :D ) progress has been slow to say the least. I'm finally almost done, so I figured I'd post it all in one place.

Here's the very beginning, I don't have much in the way of tools, so the initial cuts were made with a circular saw, I then clamped top+Bottom together and sides together to level out my crappy cuts :lol:
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by the way the furniture like structure I'm using as my work bench is was an organ I got for free and later was turned into a 2x10 cab

The dimensions I chose were based off of the 63-67 Fender Bandmaster 2x12 cab (21'' x 32'' x 11½''), since my amp is a 65' Bandmaster and I like the size of that cab. I used pine from Lowes, it was ok quality, took me a while to find a decent board. Went with finger joints, thinking it wouldn't be that bad.

I wish I had taken pictures of that process, I tried first with a cutout tool/zip saw, then a combo of that and a jig saw. Still no good so I consulted a friend who set me up with a chisel and hammer :shock: In then end I did almost all of the joints by hand with the chisel/hammer. Without a jig it is very difficult to get tight fitting joints. Only one corner was really a solid match, I ended up using nails to pin the joints and plenty of glue. A little wood filler later on and it looks like I almost knew what I was doing
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The baffle board is made out of 1/2"(IIRC) birch ply, again from Lowes. I ended up using a dinner platter, that just happened to be pretty close in size to the speaker, to plot out my cut. Again tried the cutout/zip saw, without much success, disappointing because I thought it would be the perfect tool for this. The jig saw ended up being the best route out of what I had. The opening is not perfect but it works. Also tried out a floating baffle, meaning I only put in side cleats and attached the board with a screw in each corner. this allows the baffle to flex more letting the cab contribute more to the tone, no issues with the design as of yet.

I chose the Weber Alnico 15a150b 50watts - Description: replaces Chicago Jensen P15P.
15", 40oz AlNiCo magnet, 30 or 50 watts, 1-1/2" voice coil, ribbed cone.
This speaker is very similar to the original Chicago P15P. Players who want to get more power tube distortion at a lower volume prefer the P15P over the P15N due to its lower sensitivity. I have to agree on that. You can get a great crunch out of this speaker at lower volumes. Medium breakup, crunch and punch. Earlier breakup than a P15N, more focused in the mids and upper mids. Compressed and fattened at higher volumes.
Excellent speaker by the way, it was exactly what I was looking for. It starts to break up a little earlier but not much, I'd say less than one number on the volume dial, still plenty of clean headroom and just a sweet sounding speaker.

Covering! This is the most recent activity, just did it this past week. I used a spray adhesive and some upholstery fabric I found at a local bargain shop that looked close to tweed on the back. Cut the fabric on the floor in my hall (wife loved that one) It went on really a lot easier than I thought, and looked better than I had expected.
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But then I had to go and screw it up :thumbdown:
I bought Zinser amber shellac to help protect it and give it that aged tweed look, as was suggested from other forums.
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It turned out mud brown. The fabric just soaked it right up and I knew after the first brush stroke I had ruined it, wish I had thought to test it on the bottom first or something.

Oh well, my first impression when I finished was that it looked like I pulled it out of a swamp, I guess that's kind of cool in an ugly sort of way though 8-)
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Here's the tower of power, Bandmaster, 1x15 "Swamp Fox" and 2x10 (formerly a Hammond organ) with my '90 ASAT
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Now all that's left is a back panel (going for semi-closed), handle, and glides

-Dave
brianr0131
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Joined: Sun Jan 02, 2011 1:32 pm

Re: The neverending 1x15 cab project - almost done

Post by brianr0131 »

Very Nice. Your ASAT looks a lot like mine! Good work!
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yowhatsshakin
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Joined: Tue Feb 09, 2010 8:00 am
Location: Seattle

Re: The neverending 1x15 cab project - almost done

Post by yowhatsshakin »

Nice project Dave :happy0065:
Dave_P wrote:It turned out mud brown. The fabric just soaked it right up and I knew after the first brush stroke I had ruined it, wish I had thought to test it on the bottom first or something.

Oh well, my first impression when I finished was that it looked like I pulled it out of a swamp, I guess that's kind of cool in an ugly sort of way though 8-)
Better to have muddy looks than muddy sound. And it doesn't make a lot of difference on a dark band stand anyway ;-) And yes, I love that ASAT too!

- Jos
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blargfromouterspace
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Joined: Sat Apr 03, 2010 5:45 am
Location: Central Highlands, Australia

Re: The neverending 1x15 cab project - almost done

Post by blargfromouterspace »

Told you covering it would be easy ;)

I used shellac on my first one (the Paisley Deluxe amp, which I just sold yesterday), and it does indeed have a brownish hue to it. It's also criminally expensive stuff, and the fabric absorbs a LOT of it! I've found that the cheapest polyurethane from a paint store is better - it's clearer, costs around 1/8th as much as shellac, doesn't react with the glue holding the fabric on and most probably longer lasting.

Nice to see it finished Dave - FWIW I like the hue that fabric has taken on - real classy :clap:
-Jamie
Dave_P
Posts: 364
Joined: Fri Oct 15, 2010 9:11 am
Location: Rhode Island, United States

Re: The neverending 1x15 cab project - almost done

Post by Dave_P »

Thanks Brian!

Jos, you make very good points!

Thanks for the comments on the ASAT as well, I won't lie, she's a great guitar :mrgreen:

Jamie, sorry to hear the Paisley Deluxe has gone, that was a great sounding little amp. I think I'll go with the poly next time around and butt joints, the whole project would have gone a lot quicker. The color is growing on me, I've already banged it into a couple things which reveals some lighter hues, it's going to have a lot of character....well aside from the burlap grill cloth :lol:

-Dave
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blargfromouterspace
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Re: The neverending 1x15 cab project - almost done

Post by blargfromouterspace »

I didn't realize that was burlap, it looks fantastic!
-Jamie
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darwinohm
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Location: Minneapolis/St Paul

Re: The neverending 1x15 cab project - almost done

Post by darwinohm »

Great project Dave. I like the Bandmaster and the ASAT.-- Darwin
Dave_P
Posts: 364
Joined: Fri Oct 15, 2010 9:11 am
Location: Rhode Island, United States

Re: The neverending 1x15 cab project - almost done

Post by Dave_P »

I didn't realize that was burlap, it looks fantastic!
Thanks Jamie! I was surprised it looks as good as it does, up close you can see the flaws/un-even gaps but overall very happy. Plus it only cost $4 and I have enough for a second of the same size

Thanks Darwin, the Bandmaster is a great bargain if you're looking for a blackface fender I see them fairly often in the $500 range. I have to admit I've been GAS'ing for a VOX lately (specifically the AC30HH(hand-wired and ef86 preamp)). I think I may try and find a used AC4, that may appease the GAS, I won't have to cash in my daughter's college fund, and I'll live to play it :shock:

-Dave