Previous Thread
Next Thread
Print Thread
Rate Thread
Page 59 of 95 1 2 57 58 59 60 61 94 95
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394311 06/19/13 07:27 PM
Joined: Sep 2004
Posts: 5,422
axiomite
OP Offline
axiomite
Joined: Sep 2004
Posts: 5,422
Something is (finally) in the works....

Just over a week ago, I was asked by my wife and kids what I wanted for Father's Day. The next day I gave them a printout of the following plus a shot of the exact 49" x 97" x 3/4" MDF panel at Home Depot.

I said, I would like that sheet of wood cut to these specs.



I am a couple of hours into the project. Which isn't as far as you would think, but I am getting good and using a sircle jig with my router. I will post more pictures in the near future.

In the mean time, yes, that is almost 4 cuft...

I am using the full 4" port from Parts Express:


The woofer is aDayton Audio RSS315HF-4 12" Reference HF


And the Amp is a BASH 320 amp from SVS (same as what is in my current SVS 20-39PCi). I had an amp issue back in 2004 with my SVS and they sent me a brand new one. They never asked for the old one back, and in the middle of the "we shipped it" process, someone at AVS had a solution to my problem. I don't recall the solution, but it fixed what was happening and I never did swap amps around. SVS was told of what happened, and never asked for the new amp back even then.

It looks like this, but isn't installed:


Farewell - June 4, 2020
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394314 06/19/13 07:53 PM
Joined: Jun 2003
Posts: 8,488
T
axiomite
Offline
axiomite
T
Joined: Jun 2003
Posts: 8,488
Awesome. Have fun!


bibere usque ad hilaritatem
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394344 06/20/13 03:56 AM
Joined: Sep 2004
Posts: 5,422
axiomite
OP Offline
axiomite
Joined: Sep 2004
Posts: 5,422
OK. As promised, here are some subwoofer build pictures with a few comments:

Here are the basic cuts after getting the 3/4" MDF cut from Home Depot thanks to my wife and kids.


Here is my first shot at using a circle jig with my router. It was AWESOME and turned out very well.

This is the center brace that holds the middle of the sub together and hold the bottom of the port tube.


Next up is the bottom that holds the woofer itself. I used two pieces of 3/4" MDF. The center holes are the same, but the outside piece is also routed a little wider to allow the woofer to be recessed.


Then I worked on getting the top routed to hold the top of the port tube. It is nicely recessed too.


Next is the whole thing with all of the center brace holes routed again to make the holes round to allow for better air flow inside the box.


A closeup of the rounded center brace holes.


And a second closeup of the rounded corners.



Tomorrow I will cut out the hole for the amp and then start gluing things together. Then I caulk the seams. When that is cured, I will add the dampening foam to the inside. After that, I will put the last side panel on, and continue the assembly. The steps that are taking the longest amount of my time are pretty much done. Everything else will go pretty quickly but just need longer cure times in-between steps.


Farewell - June 4, 2020
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394345 06/20/13 04:09 AM
Joined: Dec 2007
Posts: 7,786
axiomite
Offline
axiomite
Joined: Dec 2007
Posts: 7,786
Very nice Nick. What is the port tuning? I'm guessing it will reach a little lower than your current SVS sub.


Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394346 06/20/13 04:15 AM
Joined: Sep 2004
Posts: 5,422
axiomite
OP Offline
axiomite
Joined: Sep 2004
Posts: 5,422
According to the models that were done, it should go to about 17 or 18 Hz.


Farewell - June 4, 2020
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394350 06/20/13 04:58 AM
Joined: Jun 2003
Posts: 8,488
T
axiomite
Offline
axiomite
T
Joined: Jun 2003
Posts: 8,488
Great work, as always.


bibere usque ad hilaritatem
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394352 06/20/13 05:36 AM
Joined: May 2002
Posts: 10,654
shareholder in the making
Offline
shareholder in the making
Joined: May 2002
Posts: 10,654
Yeah, Nick; I did T-S calculations and got a -3dB 17.6Hz with a 5.83 cu. ft. enclosure.


-----------------------------------

Enjoy the music, not the equipment.


Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394354 06/20/13 12:09 PM
Joined: Sep 2004
Posts: 5,422
axiomite
OP Offline
axiomite
Joined: Sep 2004
Posts: 5,422
Hmm... It has been over a year since I did the modeling and I had someone else on the DIYAudio forums run it too. I guess my memory is wrong. The SVS goes down to 20 Hz with a slightly smaller enclosure, but I am guessing that the port must be a different length to get the tune. Maybe that is where I am off.


Farewell - June 4, 2020
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394356 06/20/13 01:24 PM
Joined: Sep 2004
Posts: 11,458
shareholder in the making
Offline
shareholder in the making
Joined: Sep 2004
Posts: 11,458
Awesome, Nick!


::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
Re: Maybe I should start a v4.0 build thread somewhere
nickbuol #394402 06/21/13 02:32 AM
Joined: May 2002
Posts: 10,654
shareholder in the making
Offline
shareholder in the making
Joined: May 2002
Posts: 10,654
Nick, what do you consider might be "wrong" about your recollection? The 17.6Hz number is in the 17-18Hz range you mentioned. Of course, if you measured the volume of your enclosure and it's significantly less than the 5.83 cu. ft. "ideal" for a maximally flat response curve, then the extension at -3dB would be less and there would be more of a peak in the response.


-----------------------------------

Enjoy the music, not the equipment.


Page 59 of 95 1 2 57 58 59 60 61 94 95

Moderated by  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,939
Posts442,452
Members15,615
Most Online2,082
Jan 22nd, 2020
Top Posters
Ken.C 18,044
pmbuko 16,441
SirQuack 13,840
CV 12,077
MarkSJohnson 11,458
Who's Online Now
1 members (fonthillbilly), 235 guests, and 0 robots.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4