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#414318 - 08/29/15 02:23 PM Re: Lets plan a theater space [Re: Serenity_Now]
Serenity_Now Offline
aficionado

Registered: 03/28/14
Posts: 831
Loc: PEI, Canada
Cranking away (slowly) on the to do list. Blinds installed. Electrical panel cover finished and mounted (my!cabinetry!skills!suck!)

The doors, the doors! (not- The Doors.) Don't you love 'em madly? I sure do. Turning out great. Still need to wrap the recessed parts in fabric, insert glass and cap with trim, but hey, been a while without doors, so I'm excited. The inside edges are getting weather stripping kits instead of Jambs. I have to install lapping weather stripping where they meet in the middle. We left a 1/4" gap to allow for this. Hope it works. Should help keep the sound in\out very well. I estimate the doors at approx 70lbs each pre-glass. Fat bitches (bottomed girls.)

Outside the room is a birch veneer with a "latte" water stain. Very french looking gate hardware.



Inside the room is a birch veneer with a "terracotta" water stain. The frames for the absorbers, screen wall trim, and poly diffusers will get the same stain.



Now to go clean the hurricane that is my garage!

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#414333 - 08/30/15 01:09 PM Re: Lets plan a theater space [Re: Serenity_Now]
Serenity_Now Offline
aficionado

Registered: 03/28/14
Posts: 831
Loc: PEI, Canada
We purchased an extra sheet of 1/8" birch veneer we put on the inside of the doors. Polys are now installed and waiting for filler to dry for sanding and touchups. I'm not sure how I'll be able to quantify the difference (likely small) they make. They sure look neat though.

Listening results once room is back together....


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#414335 - 08/30/15 03:15 PM Re: Lets plan a theater space [Re: Serenity_Now]
bridgman Offline
axiomite

Registered: 08/25/04
Posts: 5551
Loc: Bowmanville, Ontario, Canada
OK, now *that* is clever.

Do you have some damping material behind the veneer ?


Edited by bridgman (08/30/15 03:16 PM)

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#414337 - 08/30/15 03:43 PM Re: Lets plan a theater space [Re: Serenity_Now]
Serenity_Now Offline
aficionado

Registered: 03/28/14
Posts: 831
Loc: PEI, Canada
Cant take credit for it. smile here's the recipe.

https://www.gearslutz.com/board/attachme...poly-panels.pdf

I havent put anything behind them yet. Going to wait and see what the absorbers do first. They are next up.

The new response plot isnt really anything revelatory, as expected. The combination of the doors on the room and polys has made the room sound "worse". I think its the doors just holding energy in the room more and not a lot of absorbtion yet. Dont get me wrong, it doesn't sound bad, just not as defined as before. I wonder if the rt60 went up. Should test.

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#414371 - Yesterday at 05:56 PM Re: Lets plan a theater space [Re: Serenity_Now]
Serenity_Now Offline
aficionado

Registered: 03/28/14
Posts: 831
Loc: PEI, Canada
After tweaking stuff a little more, cutting the bass a few db, putting spikes on speakers and finalizing their position listening for a while to test tracks I use, I think the room is getting into pretty good shape.

The ETC (impulse) plots are nearly identical from left to right channels. The rt60 is high-ish still, but no noticable room echo or ring (thanks in no small part to the polys grin). Well worth the < $60 and time staining and installing.

It is unfair to show a comparison plot between the before and after poly install. Too many variables have changed. What I can say is they seem to offer "air" or smoothing in the high/extended treble ranges. The response plot shows an increase above 4khz right to 8khz of about 5 db. This is great! My speakers are no Axioms...... Their off axis response is kinda ugly. I can only magine what can be accomplished with an Axiom setup.

This is with front corner traps, polys, screen and "good" speaker positioning. I say good because they are toed in to sound like a singer is on a barstool in front of me in the mlp.

Interestingly enough, moving to the next seat over in either direction yields pretty much the same results. Not exact, but the trends are similar over the mid to high frequencies. Bass is almost identical from chair to chair. I attribute this to setting up the row of seating following room mode avoidance rules.

I'm hoping the absorber panels will start to flatten the region below 400Hz or so. This stuff is cool! any predictions? I'm hoping Nick isn't right and I have to redo the front corner traps. Historically..... he's usually right. Lol. I may cover the absorbers right off with 6mil vapour barrier to focus on lower frequencies only. We'll see.

Anyways here we go so far. 1/12th octave scale. Pink noise averaged, yadda yadda yadda.




Edited by Serenity_Now (Yesterday at 06:06 PM)

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