13" AutoTuba

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bassmonster
Posts: 1384
Joined: Wed Jul 13, 2011 9:23 am

13" AutoTuba

#1 Post by bassmonster »

I had some extra wood from my last 5" TrT build, so I decided to throw together an AutoTuba. I repurposed an old 8" ported sub and its plate amp, so I didn't expect a lot, just for it to be better than the ported box it was in. I used 1 tube of PL, a combination of MDF and spare Baltic Birch I had laying around, and it took me about 7 hours from start to finish. Since I repurposed the driver and plate amp, this little project only cost me about $10 extra for PL and drywall screws.

Panels cut:

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Base panel and access hole cut:

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Panels 1-4 attached, yes I already attached the driver and mounted it from the inside so I won't ever be able to remove it. Sue me.

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Ready for the final panel, yes the driver is woefully inadequate for a horn application.

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Finished:

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Impressions: Well, I'm not using anything close to the recommended driver, so my impressions of it are moot. The cheap, weak 40w driver sounds terrible compared to the recommended driver, but sounds much better than the original box it was in. This is a nice, small cabinet that would work well in a car. I gave this AT and plate amp to my sister, who has been cultivating an audio collection of her own. It's good for her room and won't be destructively loud.

Bruce Weldy
Posts: 8585
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: 13" AutoTuba

#2 Post by Bruce Weldy »

bassmonster wrote:I gave this AT and plate amp to my sister, who has been cultivating an audio collection of her own. It's good for her room and won't be destructively loud.

Good for you!

Wish more young folks got off their butts and did something creative and unselfish.

I've got a feeling that you are going to turn into a happy, successful adult.

:clap:

6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

jimbo7
Posts: 875
Joined: Fri Dec 28, 2012 10:45 am
Location: St. Louis

Re: 13" AutoTuba

#3 Post by jimbo7 »

I got the itch to find something to do with my scraps. I just got a Samsung HW-C900 receiver for dirt cheap. Now I need some surround speakers. I should have enough to make some shorty SLA's, but not enough for a center :(
BFM builds:
XF212
T24 BP102 24"
2x SLA's 6-5" mids, 9- gt-302's
2x AT 14" MCM 55-2421
TrT 5" MCM 55-2421
AT 18" JBL GTO804
2x OT12 flat array
2x SLA Pro 2-Alpha 6's 2-Goldwoods
2x T39 24" 3012lf
Simplex 10 BP102

Ryan Sober
Posts: 204
Joined: Sat Feb 01, 2014 8:34 pm
Location: Birmingham, AL

Re: 13" AutoTuba

#4 Post by Ryan Sober »

jimbo7 wrote:I got the itch to find something to do with my scraps. I just got a Samsung HW-C900 receiver for dirt cheap. Now I need some surround speakers. I should have enough to make some shorty SLA's, but not enough for a center :(
zaphaudio.com

He has some excellent small-scale HT speaker designs.

bassmonster
Posts: 1384
Joined: Wed Jul 13, 2011 9:23 am

Re: 13" AutoTuba

#5 Post by bassmonster »

Bruce Weldy wrote:I've got a feeling that you are going to turn into a happy, successful adult.
Thanks, and I sure hope so. :D :lol:

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escapemcp
Posts: 1219
Joined: Thu Feb 07, 2013 8:57 pm
Location: Bristol, UK

Re: 13" AutoTuba

#6 Post by escapemcp »

Why did you cut an access hole if the driver cannot be removed :confused:

Keryn O'Shea
Posts: 572
Joined: Sat Jan 26, 2013 5:50 pm
Location: Brisbane, Australia

Re: 13" AutoTuba

#7 Post by Keryn O'Shea »

escapemcp wrote:Why did you cut an access hole if the driver cannot be removed :confused:
:lol:
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FA, J12 FA, OT8 CD, OT12 FA, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 MA, XF210. Next J10L

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