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View Full Version : 2 HDC3 15's with DUAL Vertical kerf port



bigbud747
02-25-2012, 01:14 AM
Just started this box tonight. Have about 3 hours into it. Just have to put the double baffle on, cut the holes, and it's done. Guy wanted it bare. Box is 7.3 cubes with 120 sq. in. of port tuned to 37 hz. Should make some boom in the back of his Trailblazer. On to the pictures.


http://i265.photobucket.com/albums/ii201/bigbud747/421250_356199924403414_100000402274380_1191908_155 3101064_n.jpg
http://i265.photobucket.com/albums/ii201/bigbud747/417508_356200154403391_100000402274380_1191909_891 210_n.jpg
http://i265.photobucket.com/albums/ii201/bigbud747/431517_356200294403377_100000402274380_1191910_179 4431860_n.jpg
http://i265.photobucket.com/albums/ii201/bigbud747/418452_356200447736695_100000402274380_1191911_146 7844084_n.jpg
http://i265.photobucket.com/albums/ii201/bigbud747/426822_356200701070003_100000402274380_1191912_180 021739_n.jpg
http://i265.photobucket.com/albums/ii201/bigbud747/397158_356200944403312_100000402274380_1191914_147 0024291_n.jpg

kowboy
02-25-2012, 01:18 AM
Tuned in...

mlstrass
02-25-2012, 02:05 AM
are you filling the backside of the kerf with anything? And why so small on the enclosure as AQ's like large enclosures?

bigbud747
02-25-2012, 02:48 AM
Backside is filled with wood glue and will be fiberglassed. And space constraints is the reason for only 7.3 cubes. I'll be interested to hear how it sounds off just one 2200. Any input in design? Never built a box like this before but have seen many like this put up good numbers.

bigbud747
02-25-2012, 08:22 PM
Just finished the box up. Will be left bare for now. Did a double baffle for extra strength, and resined the kerfs, and all corners, so won't be leaking anytime soon. Also have bolts through the box for speaker terminals for maximum power transfer. The guy will probably be installing everything tomorrow and letting it rip. We'll see what she does then.


http://i265.photobucket.com/albums/ii201/bigbud747/419941_356678821022191_100000402274380_1193313_109 8144548_n.jpg
http://i265.photobucket.com/albums/ii201/bigbud747/420042_356679011022172_100000402274380_1193314_192 7596578_n.jpg
http://i265.photobucket.com/albums/ii201/bigbud747/424129_356679151022158_100000402274380_1193316_287 098541_n.jpg

Buck
02-25-2012, 08:29 PM
You should get good numbers but can't say how well it will sound on music.

bigbud747
02-25-2012, 08:33 PM
With it being about 6" from the back hatch, there will be more compression than being a lot farther from the hatch. I'm thinking musically from 36 hz and up.

Buck
02-25-2012, 08:41 PM
I think aeros might have worked well in this application.

bigbud747
02-25-2012, 08:46 PM
Yeah. He wanted something that nobody else had, so i figured i would build him this. It won't be playing Decaf anytime soon, but it will soot his needs for hitting high numbers and still being musical. Most of the rap he'll listen to will be in the low to mid 40 hz range.

wenn_du_weinst
02-25-2012, 08:52 PM
The enclosure specs look pretty spot on for the listening preferences. My personal experimentation found the Aq to like smaller chambers and larger ports tuned low to play flat and over power the spike in response. The enclosure looks nicely built. I had 2 12's ported at 37 in my s10 blazer and they would play to the low 30's pretty well.
I have been wanting to grab another pair of aq's to play around with I would like to try them out in a tline or horn loaded enclosure.

bigbud747
02-25-2012, 09:12 PM
That's very good to know. The guy had limited space, but i figured that 7.3 cubes would be enough, especially with a HUGH port. Might not do a hair trick but it's going to be painful, even on just a 2200 for now.

bigbud747
02-29-2012, 12:58 PM
Guy is coming over today. He has a DD-1, so we'll be tuning the amp and seeing what it can do. Just wish i had access to a TL.

pro-rabbit
02-29-2012, 01:00 PM
Guy is coming over today. He has a DD-1, so we'll be tuning the amp and seeing what it can do. Just wish i had access to a TL.

Move to OKC and you will lol

bigbud747
02-29-2012, 04:11 PM
Well, I actually live in Stillwater. Haha. The closest person I know that has one is Anthony Aho at Aho Audio in Guthrie. I'd love to have a meet up with some people around the OKC/Stillwater area. The guy i made this box for lives in Moore... Message me your contact info and we can get this setup metered.

Also, he says it's really loud, but like any other bass head wants louder. Therefore he's been talking to me about a wall. Obviously this opens up more air space, but what would be a good net volume and port area for a wall with these 2 HDC3 15's?

pro-rabbit
02-29-2012, 04:16 PM
I will send over my info in a few...


As for a wall...well i would do around 8.5-9.5ft3 with a large amount of port area.

Is that your adds on craigslist I see from time to time lol

BTW- I'm buying a CNC very very soon and picking up a new location(in OKC or Yukon not sure which yet) so if you need something custom done that is a pita with basic tools just hit me up.

Buck
02-29-2012, 04:19 PM
I will send over my info in a few...


As for a wall...well i would do around 8.5-9.5ft3 with a large amount of port area.

Is that your adds on craigslist I see from time to time lol

BTW- I'm buying a CNC very very soon and picking up a new location(in OKC or Yukon not sure which yet) so if you need something custom done that is a pita with basic tools just hit me up.

:yumyum:

bigbud747
02-29-2012, 04:22 PM
I've only posted up once in Craigslist, but i noticed there's someone else who looked like they copied and pasted my add and added their number. Haha. Since my customer base is mainly in Kansas, i'm trying to get some business down here around Stillwater while i'm going to school for a little extra money.

I modeled a box in BassBox Pro that was 9 cubes with 216 sq in of port tuned to 36 hz. Peaked at 38 and had an F3 at 30.8, so should be decently musical.

This guy is coming up in a couple hours to let me hear this setup, so i'll get back on what i think it can do on the meter.

And yeah, if i need anything that a good old jig saw and router can't accomplish i'll hit you up. Last time i used a CNC was in high school, and it made making a 2 18" box with 4 6" aero ports SSOOO easy. Haha.

Buck
02-29-2012, 04:25 PM
I've only posted up once in Craigslist, but i noticed there's someone else who looked like they copied and pasted my add and added their number. Haha. Since my customer base is mainly in Kansas, i'm trying to get some business down here around Stillwater while i'm going to school for a little extra money.

I modeled a box in BassBox Pro that was 9 cubes with 216 sq in of port tuned to 36 hz. Peaked at 38 and had an F3 at 30.8, so should be decently musical.

This guy is coming up in a couple hours to let me hear this setup, so i'll get back on what i think it can do on the meter.

Why so high? Or do I just like my lows?

Kangaroux
02-29-2012, 04:28 PM
Why so high? Or do I just like my lows?

I wish I was tuned to 35+. My car drops my tuning down from 32 to 27.

bigbud747
02-29-2012, 04:29 PM
HDC3's model better if you have 3 or more. But with only 1 or 2 they are very peaky around the tuning frequency. The roll off with 3 or more is a lot more gradual. Lowering to tuning only decreases the peak, it doesn't really move the response much lower. I put in a 28 hz tune just for fun, and it was a very flat response, but didn't help the low end much. A smaller port would help more though, but he's mainly interested in being very loud, while being able to play most music. No Decaf unfortunately. Haha.

pro-rabbit
02-29-2012, 04:37 PM
I wish I was tuned to 35+. My car drops my tuning down from 32 to 27.

Common problem for those that tune supper low.

pro-rabbit
02-29-2012, 04:40 PM
I've only posted up once in Craigslist, but i noticed there's someone else who looked like they copied and pasted my add and added their number. Haha. Since my customer base is mainly in Kansas, i'm trying to get some business down here around Stillwater while i'm going to school for a little extra money.

I modeled a box in BassBox Pro that was 9 cubes with 216 sq in of port tuned to 36 hz. Peaked at 38 and had an F3 at 30.8, so should be decently musical.

This guy is coming up in a couple hours to let me hear this setup, so i'll get back on what i think it can do on the meter.

And yeah, if i need anything that a good old jig saw and router can't accomplish i'll hit you up. Last time i used a CNC was in high school, and it made making a 2 18" box with 4 6" aero ports SSOOO easy. Haha.

CNC's are amazing tools for sure. It is part of the plan for us to offer some shops around here a new option for "prefab" enclosures. I have a few contracts already, just waiting on me to pull the $$$ trigger on getting one.




As for modeling them, those programs are ok for a basis of what it "may" do, but a wall is a whole new beast. lol

Buck
02-29-2012, 04:41 PM
Hmm, just personal preferences. I still like playing in to the lower 20's.

So what is he aiming for on the TL?

bigbud747
02-29-2012, 04:50 PM
Yeah. It's nice to be able to see a "general" response curve, but like you said, it's hard to judge what it will actually do.

I have a single cab truck with a 2 10's tuned to 38 hz, yet it can play all the way down to 24 (can do a 142.1 at 24hz).

Buck: His old setup was 2 Kicker L7 15's, and he says even with only about 500 watts per sub, they are already louder and sound a ton better than the Kickers (not hard to do. Haha). I think he's aiming for mid to high 40's after he gets a second 2200. I honestly don't see him having a problem doing at least a 145, but we'll see about that 149. Haha.

kushy_dreams
02-29-2012, 04:52 PM
I wish I was tuned to 35+. My car drops my tuning down from 32 to 27.

How did you find this out?

schackel
02-29-2012, 07:14 PM
put body filler on the outside of the kerf to make it smooth!

bigbud747
02-29-2012, 07:25 PM
Smoothed out with wood glue, then went over it with Fiberglass. If i get a chance and throw a little milkshake on the inside and smooth it.

Kangaroux
02-29-2012, 07:55 PM
How did you find this out?

From watching the excursion. My sub moves the least amount at 27hz, as well as ~39hz, which is my cabin peak.

Cook107
03-06-2012, 02:14 AM
He did a great job on the box. Has a pretty flat response. Can't wait to get it metered. And to start on the wall. Easily in the low to mid 40s. And it isn't very peaky at all, to anyone wondering.

813thumper
03-06-2012, 02:44 AM
Hmm, just personal preferences. I still like playing in to the lower 20's.

So what is he aiming for on the TL?

This.

CHRIS 323
03-24-2012, 10:06 PM
nice box