Jump to content

Best DIY subwoofer?


Rudy81
 Share

Recommended Posts

2 hours ago, Rudy81 said:

Just amazing in my book.  I have been playing with this stuff for years and have never seen that kind of relatively flat room response. 

That's cool.  I've always wanted 4 subs, one on each wall, but never had the "room" for it.  Once I read the Harman white paper, it made perfect sense as to why.

Link to comment
Share on other sites

57 minutes ago, Rudy81 said:

The REW software has two preset configurations.  One puts the subs in the 4 room corners.  The other puts the subs at the 4 wall mid-points.  The two options are certainly way better in room interaction than putting them all in one location. 

 

I figured I had some time to kill and why not move those 200+ pound behemoths around my room.  I ran frequency measurements and much to my surprise, the response was close to what  REW predicted.  I had also been reading that the subs should NOT be left on the floor for optimum performance....and that was correct also.  Due to the configuration of my build, I can place the driver 4' in the air without placing them on any other surface.  So, I played with the software for hours trying to make the response as flat as possible.  I then configured the subs as indicated by the response.  The results are amazing in my book.  I get a very flat room response in LF without ANY EQ.  Just amazing in my book.  I have been playing with this stuff for years and have never seen that kind of relatively flat room response. 

 

I now have my subs at various heights and positions throughout the room and they sound really amazing.  I plan on taking more measurements today for comparison.  

the harmon papers are the best baseline for starting points.

 

nothing replaces lots of measurements

i spent probably 200 hours measuring moving and fine tuning and learning

my goal was to have every seat identical

after a while new changes not only dont improve response but degrade it...thats when u know you are close

 

my 3 couch seats even in a l shaped room are identical within a few db and response is flat no dips or peaks

position is the hard part, after that setting delays on each sub and eq are the final steps to greatness

 

i use what would be considered 2 minimarties and 2 martycubes. 

the big ones are ultimax18s, the cubes are legacy 15s with a strong midbass slam.  couldnt be happier 👍

Link to comment
Share on other sites

1 hour ago, Rudy81 said:

If you guys have a link to the Harman paper, please let me know.  I would like to read it and compare to what I have learned from other sources concerning multiple sub setups.

This is probably where other sources got their info from.

 

https://www.harman.com/sites/default/files/multsubs_0.pdf

  • Like 1
Link to comment
Share on other sites

  • 2 weeks later...
  • 3 weeks later...
On 2/24/2018 at 6:49 PM, nd-irish147 said:

How would a full marty compare to a 18" wide tuba ht? 

 

I have not heard a tuba ht.  I chose the Marty for ease of build and for the ability to customize the dimensions of the cabinet.  Turns out my build worked out great for my layout.  I have 4 rather large subs in the room and they are not as noticeable in size and aesthetics as one would think. 

Link to comment
Share on other sites

3 hours ago, Khornukopia said:

 

What are your thoughts after a few weeks of listening enjoyment?

 

So far, I am still thrilled with the performance.  Certainly in terms of pure output from the individual subs, but I am also very impressed with the system response having spread out the subs around the room in all 3 dimensions.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...