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Forum: DIY Speakers and Subs   07-10-2014, 05:09 AM
Replies: 1,082
Views: 48,991
Posted By HopefulFred
Some of the parts, especially the midrange...

Some of the parts, especially the midrange drivers, are frequently unavailable. Erich sells them when he has them.
Forum: Dedicated Theater Design & Construction   07-09-2014, 08:16 PM
Replies: 9
Views: 193
Posted By HopefulFred
I did not use anything under the riser - maybe...

I did not use anything under the riser - maybe one day I'll regret that, but I doubt it. The riser is resting on finished hardwood flooring. In places that framing rests on concrete, I used pressure...
Forum: Dedicated Theater Design & Construction   07-09-2014, 06:24 PM
Replies: 9
Views: 193
Posted By HopefulFred
That's what I'm using. In fact, if you could...

That's what I'm using. In fact, if you could swing by with a truck, I need about three more sheets. But if BIG says you can skip the tongue and groove, he's probably right- but note he is using...
Forum: Dedicated Theater Design & Construction   07-09-2014, 03:09 PM
Replies: 9
Views: 193
Posted By HopefulFred
Buy proper subfloor - tongue and groove. It's...

Buy proper subfloor - tongue and groove. It's more expensive, but the T&G helps keep down the squeaks. Two layers is good. There should be something between them as well - roofing felt is supposed...
Forum: Official AVS Blu-ray Disc Reviews   07-09-2014, 04:51 AM
Replies: 25
Views: 1,555
Posted By HopefulFred
If you didn't watch till the end, you missed all...

If you didn't watch till the end, you missed all the excitement! (really)
Forum: Dedicated Theater Design & Construction   07-08-2014, 11:30 AM
Replies: 1,617
Views: 105,878
Posted By HopefulFred
NEC usually requires lots of electrical outlets...

NEC usually requires lots of electrical outlets (every 8' plus near corners and doors, I think), so they're putting the outlets in the columns to avoid putting holes in the walls.
Forum: DIY Speakers and Subs   07-07-2014, 09:22 PM
Replies: 1,082
Views: 48,991
Posted By HopefulFred
I think you'll have to rotate the original and...

I think you'll have to rotate the original and upload again. Cool pic.
Forum: Speakers   07-07-2014, 09:12 PM
Replies: 5
Views: 145
Posted By HopefulFred
Ben, I think you'll be okay to screw all the way...

Ben, I think you'll be okay to screw all the way into the cabinets as long a you leave the screws in there to keep the hole plugged. You'll want to pre-drill the holes to avoid splitting the wood. ...
Forum: Dedicated Theater Design & Construction   07-07-2014, 04:10 PM
Replies: 1,181
Views: 45,637
Posted By HopefulFred
This is a little OT, (maybe a lot) but I think...

This is a little OT, (maybe a lot) but I think doulewing11 will enjoy it. I don't know what kind of wood was used, but it reminded me off all this knotty alder.
http://vimeo.com/76973207

(If...
Forum: Dedicated Theater Design & Construction   07-07-2014, 01:47 PM
Replies: 1,617
Views: 105,878
Posted By HopefulFred
The only other thing that occurs to me is with...

The only other thing that occurs to me is with trim and fasteners. If you want to build them elsewhere, you need I account for whatever will secure them as well as something to hide the inevitable...
Forum: Dedicated Theater Design & Construction   07-07-2014, 12:26 PM
Replies: 14
Views: 454
Posted By HopefulFred
Insulation within the ceiling will have zero...

Insulation within the ceiling will have zero effect on the acoustics, as long as something is there (and if you left it empty, the effect would be vanishingly small). Insulation should be used in...
Forum: Official AVS Blu-ray Disc Reviews   07-07-2014, 09:49 AM
Replies: 25
Views: 1,555
Posted By HopefulFred
I saw this in a local cinema during the thetrical...

I saw this in a local cinema during the thetrical run, and Ralph's synopsis is right on. The acting is quite strong and the atmospherics of the film are powerful. It's minimalist in a way that...
Forum: Dedicated Theater Design & Construction   07-07-2014, 08:33 AM
Replies: 1,119
Views: 54,541
Posted By HopefulFred
I did not do that math - so thanks. :) If i do...

I did not do that math - so thanks. :) If i do math, it's usually in public so someone can check my work. ;)
Forum: Dedicated Theater Design & Construction   07-07-2014, 07:36 AM
Replies: 17
Views: 471
Posted By HopefulFred
Black.

Black.
Forum: Dedicated Theater Design & Construction   07-07-2014, 06:02 AM
Replies: 17
Views: 471
Posted By HopefulFred
Will the room be otherwise dark? (Well...

Will the room be otherwise dark? (Well light-controlled) if yes; then black. If no, bias lighting might be a good choice - at least worth considering.
Forum: Dedicated Theater Design & Construction   07-06-2014, 05:40 PM
Replies: 1,119
Views: 54,541
Posted By HopefulFred
Thanks, TMcG - that does make sense. I was just...

Thanks, TMcG - that does make sense. I was just trying to back into a determination for face velocity (<250 fpm) at the intake grill, working from the assumption that the pressure would be...
Forum: Dedicated Theater Design & Construction   07-06-2014, 04:39 PM
Replies: 34
Views: 2,355
Posted By HopefulFred
800 pounds was only as much as I can reasonably...

800 pounds was only as much as I can reasonably carry in my car at one time. By the time I'm done, there will be several thousand pounds of sand in my basement. Each bag is about 45-50 pounds, and...
Forum: DIY Speakers and Subs   07-06-2014, 01:53 PM
Replies: 46
Views: 997
Posted By HopefulFred
It changes the signal level, so that signal to...

It changes the signal level, so that signal to noise ratio is better optimized. It might get rid of the hiss.

If the input signal level was 0.2V (for example), but the amp is okay with signals up...
Forum: Dedicated Theater Design & Construction   07-06-2014, 01:40 PM
Replies: 1,119
Views: 54,541
Posted By HopefulFred
8x18 is about the largest I could fit, in any...

8x18 is about the largest I could fit, in any case. I'm not really doing any real math here, just putting it together in a gettin'-it-done kind of way.
Forum: Dedicated Theater Design & Construction   07-06-2014, 01:21 PM
Replies: 1,119
Views: 54,541
Posted By HopefulFred
Grills on order: (2x) 4"x24" bar grill and (1x)...

Grills on order: (2x) 4"x24" bar grill and (1x) 8"x18" bar grill (all three brown, plus one balancing damper for installing inline in the return duct, just in case. I figured I need a coupler...
Forum: Dedicated Theater Design & Construction   07-06-2014, 10:21 AM
Replies: 34
Views: 2,355
Posted By HopefulFred
The sand is there to help absorb the vibrational...

The sand is there to help absorb the vibrational energy of low frequencies. It won't appreciably change the way the speaker or subwoofer sounds, aside from ensuring that the floor they sit upon...
Forum: DIY Speakers and Subs   07-06-2014, 08:13 AM
Replies: 134
Views: 4,775
Posted By HopefulFred
Output mostly.

Output mostly.
Forum: DIY Speakers and Subs   07-06-2014, 07:09 AM
Replies: 134
Views: 4,775
Posted By HopefulFred
I don't know about optimal, and I don't know if...

I don't know about optimal, and I don't know if this even works, but it looks like it all fits reasonably....
Forum: Dedicated Theater Design & Construction   07-05-2014, 06:13 PM
Replies: 3
Views: 158
Posted By HopefulFred
I would not be concerned at all.

I would not be concerned at all.
Forum: Dedicated Theater Design & Construction   07-05-2014, 05:54 PM
Replies: 1,119
Views: 54,541
Posted By HopefulFred
I think I've decided there is a better way to...

I think I've decided there is a better way to think about this. The 6" flex is designed for 75 CFM, but we upsize it at the grille to reduce face velocity and noise. Since a 4x24 rigid duct is...
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