Home Theater Forum and Systems banner

121 - 140 of 261 Posts

·
Registered
Joined
·
580 Posts
There are other ways to.

Angled front wall. That kills a couple stones with one bird.
 

·
Registered
Joined
·
580 Posts
I like the french cleats on the absorption panels.

An old cabinet makers technique.
 

·
Registered
Joined
·
193 Posts
Discussion Starter #130
Redesigned the Front ULF subs, they will now be the same as the riser subs, and located under the screen riser.

Also added the rest of my sound treatment panels, rear bass corner traps, and Roxul AFB 1" behind the screen on the wall.

Update on the sub design, I am working with some CNC guys on getting all the panels cutout, as there are a lot of cuts to make.
 

Attachments

·
Registered
Joined
·
580 Posts
Making sacrificial corners from the rigid Roxul?

Try listening in room before you go through all that work.

That will not actually tame much bass. Lots of low midrange but not much bass.
 

·
Registered
Joined
·
580 Posts
Hard to argue with experience.

You did some measurements I see.

Befores and afters would be most interesting.

I'm guessing you still have the same gear.

The new room should be just as interesting.
 

·
Registered
Joined
·
193 Posts
Discussion Starter #134
Moderator if you have a chance can you change my thread titile please to

Horn Sub Input Please - Build In Progress!

Thanks!
 

·
Registered
Joined
·
193 Posts
Discussion Starter #135
Got all my parts from the CNC machinest a couple weeks ago but have not had a chance to update. Construction was fairly straight forward, and I am so glad I decided to have all the parts CNC'd as there would have been a lot of cuts.

3000 staples, and 20 tubes of PL premium later....

Will get some in room measurments posted shortly.:hsd:
 

Attachments

·
Registered
Joined
·
580 Posts
So starts the fun.

You are one of a very few that have the fabled unobtanium in the low end. No limits.

No compromises, or music or sound effects that you cannot reproduce.

And for very little outlay in money.

That has to be the pinnacle of DIY!
 

·
Registered
Joined
·
193 Posts
Discussion Starter #137
Yes for sure,

AND thanks a million to Mark for his guidence during the design process!!:T

Total construction cost including drivers, wood, CNC, connectors, staples and glue.......$271.16 per speaker!

Awesome value I think
 

·
Registered
Joined
·
580 Posts
All I did was throw you a pass, your the one that ran the play.

Great to see a job well done.
 

·
Registered
Joined
·
193 Posts
Discussion Starter #140
As promised here are the measurments;

The first is a 1 watt sweep to measure the in room sensitivity of the 6 ULF subs, the room is bare, only subs installed. This was done with a 200hz crossover.

The second is power compression sweeps to check for headroom, neither the amp or drivers gave out.....Only myself and my house said it was enough. These were done with a 80hz crossover.

To verify 1 watt, I loaded my amp with my calibration resistors and checked the output voltage with my picoscope, also I calibrated my spl meter agaist my ascend cmt-340se @ 1 meter, which was also fed 1 watt. Voltage to the ULF subs was 2.31 vrms @ 5.33ohm and cmt-340se was 2.83 vrms @ 8 ohm

The measurements where taken dead center of the room @ a height of 4 feet.

Also I am using a calibrated microphone with no smoothing applied.
 

Attachments

121 - 140 of 261 Posts
Top