Just my modest LilWrecker's build. - AVS Forum
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post #1 of 56 Old 08-22-2013, 01:04 AM - Thread Starter
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It's not 16x 18" subs.. It's not a pair of Ghorns & Ohorns, or an array of 24" woofers.. But to me, this is a pretty exciting build!

Two lil wreckers loaded with Stereo Integrity HT15 woofers will be installed into my attic, will look similar to an Infinite Baffle, but with 60 cubic feet of folds behind them. EQ will be with a minidsp, amp is NU3000.

These will be replacing a single F20. The F20 is badass... But I'm sure I don't need to explain my desire to upgrade to you people. I should drop my corner by half an octave, and pick up 10db, at least.... The mouths of both horns will be about 1.5m above the seating position.

Ok, I could talk forever, here are some pics



All the wood cut! I had a kid at Home Depot rip the 4x8 sheets for me... Probably cut my build by hours. I stacked the wood to cut two sheets at once, this makes building a pair quick work!



Oh look what come in the mail today! I have no idea what I'm doing. Better start learning. No time, must build.



Beerpong tournament! Just kidding. It's like a thousand degrees outside, so I moved the build into my "finished" porch. It's only
900 degrees in there.



The cat is not an important tool for the layout, but it doesn't hurt.



After mapping out the horn, I stack both outside boards and drill pilot holes, this makes it easy to mount the final panel.



I almost forgot the driver cutout... This would have been the 4th time I missed this somewhat critical step in a build.



Get the first couple boards perfect, and the rest is a breeze.



4 hours and 2 bottles of PL later, a couple horns ready for bracing.

Drivers will be delivered Saturday, if I can find a few hours this week, I should be ready!
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post #2 of 56 Old 08-22-2013, 05:27 AM
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Nice work!

I wouldn't trust myself to even attempt DIY myself, what things look like in my brain somehow gets completely lost on the way to my hands... lol
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post #3 of 56 Old 08-22-2013, 06:27 AM
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post #4 of 56 Old 08-22-2013, 07:46 AM
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"But I'm sure I don't need to explain my desire to upgrade to you people."

And just what do you mean by YOU PEOPLE?! :P

Nice build BTW. Im still loving my single F20
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post #5 of 56 Old 08-22-2013, 08:12 AM
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Thanks for taking the time to document this. I bought the 8 sheets of plywood from HD last night and plan on putting mine together this weekend.
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post #6 of 56 Old 08-22-2013, 08:17 AM - Thread Starter
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Quote:
Originally Posted by Valar View Post

Thanks for taking the time to document this. I bought the 8 sheets of plywood from HD last night and plan on putting mine together this weekend.

If you have any questions, let me know. I have a ton of pics!
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post #7 of 56 Old 08-22-2013, 04:25 PM - Thread Starter
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Maybe I should have built a canoe instead.
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post #8 of 56 Old 08-23-2013, 04:41 PM
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bowwww

thats what braces are for man, hope you can get it sorted out. what type of ply did you purchase at HD btw?
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post #9 of 56 Old 08-23-2013, 05:55 PM
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Quote:
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Maybe I should have built a canoe instead.

That's nothing...

Braces and clamps will fix you right up.

Try working with ply that's been ripped into strips, then leaned up against the wall for a while. I was really going to get back to it any day. I think it sat that way for 6 months.
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post #10 of 56 Old 08-23-2013, 06:40 PM - Thread Starter
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Quote:
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bowwww

thats what braces are for man, hope you can get it sorted out. what type of ply did you purchase at HD btw?

The cheapest stuff... I was kind of tempted to try OSB this time biggrin.gif

I already trued up everything and the horns are almost done... Just need hit the edges with a finishing router bit, maybe slap on some paint.... Maybe...
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post #11 of 56 Old 08-23-2013, 06:55 PM
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that looks good for the *cheap stuff*, I guess it probably has the micro veneer...
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post #12 of 56 Old 08-23-2013, 07:20 PM - Thread Starter
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that looks good for the *cheap stuff*, I guess it probably has the micro veneer...

Yeah it's actually not too bad, I built a pair of speakers with the leftover boards, they came out pretty nice!
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post #13 of 56 Old 08-24-2013, 10:14 AM - Thread Starter
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Soon!
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post #14 of 56 Old 08-24-2013, 01:14 PM - Thread Starter
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I'm shocked by how nice these are!
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post #15 of 56 Old 08-24-2013, 02:04 PM - Thread Starter
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Almost boom time
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post #16 of 56 Old 08-24-2013, 09:54 PM
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stumbo,

looking forward for your impression, remember dont play too loud biggrin.gif

cheers
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post #17 of 56 Old 08-24-2013, 10:33 PM - Thread Starter
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I didn't get the chance to fire it up today, I had a couple spare hours to "play" and I spent them messing with my minidsp. What an awesome toy!
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post #18 of 56 Old 08-25-2013, 03:54 AM - Thread Starter
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Got home a bit earlier that I usually do on a Saturday night, so I went ahead and trucked one of the horns in. It was really light and easy to move by myself. You cant see my face, but I'm being sarcastic right now.

Long story short, ran REW and after a couple notches on the miniDSP and a 15hz HPF I watched a few familiar scenes (WOTW, Hanna,Hot Fuzz, Prometheus) and was able to ping my RadioShack meter over 120dbs from my seat.

It was a quick setup so I used my IPR1600 that I was using with my F20. I'll be almost doubling my power (ipr1600@600wRMS vs NU3000@1000wRMS), doubling my horns (2subs vs 1sub, durrr) and cutting my distance from the subs in half (9 feet to about 5).

To be honest, it's retarded loud right now. My Cheap Thrills keep up on receiver power (130watts) but I was running the subs pretty hot and they don't have a ton of output left.

Ill try to get a some outdoor readings once the second horn is done.

The nice thing about a tapped horn vs a folded horn is being able to see the woofer move smile.gif
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post #19 of 56 Old 08-25-2013, 07:53 PM - Thread Starter
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F20 vs lil wrecker
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post #20 of 56 Old 08-25-2013, 07:58 PM
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wow, that is a MONSTER.... I wish my house could accomodate two of those. frown.gif... or that lilmike would create a low profile vs. biggrin.gif
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post #21 of 56 Old 08-25-2013, 09:26 PM
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Nice work! Can't wait to see measurements!
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post #22 of 56 Old 08-26-2013, 04:20 AM
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Wish I had room to build these!
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post #23 of 56 Old 08-26-2013, 07:50 AM
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Good work, Stumbo. Wait until you get the other one in there biggrin.gif
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Originally Posted by wormraper View Post

or that lilmike would create a low profile vs. biggrin.gif

Would... say... 13.5" deep be low profile enough?

/shameless plug
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post #24 of 56 Old 08-26-2013, 09:59 AM - Thread Starter
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Good work, Stumbo. Wait until you get the other one in there biggrin.gif
Would... say... 13.5" deep be low profile enough?

/shameless plug

Have you tried modeling a single fold horn with the si ht18?
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post #25 of 56 Old 08-26-2013, 11:08 AM
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Nope - no money to build anything, so it's been a while since I last modeled anything. Next one will be a quad 5" design with extension to a mere 30Hz for music, provided I can afford to even get that one off the ground.
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post #26 of 56 Old 08-26-2013, 01:27 PM - Thread Starter
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Silly question, should I tune the subs individually, or as a pair?
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post #27 of 56 Old 08-26-2013, 08:05 PM
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Depends on what the room and placement require.

My advice? Start as simple as possible.
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post #28 of 56 Old 08-26-2013, 10:59 PM - Thread Starter
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Quote:
Originally Posted by lilmike View Post

Depends on what the room and placement require.

My advice? Start as simple as possible.

Added my second wrecker, sounded like butt. One note bass and a dip at 51hz that makes makes Miley Cyruses throat seem shallow. Reran the sweep at the woofers mouth and the response looks almost identical to the projected response, so that location will not be utilized... Really hoping the attic location works out well...

Still digging the single horn by itself.... A lot!

I'm running a 48db/oct at 14hz and it seems to be fine... Any advice, or does it matter?
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post #29 of 56 Old 08-27-2013, 10:15 AM
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Maybe flip phase on one, sounds like a wicked null there.
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post #30 of 56 Old 08-27-2013, 02:05 PM - Thread Starter
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Gave that a go with no luck, I'll bust out the forklift to try another location... Maybe hire a crane.
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