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Forum: DIY Speakers and Subs   02-24-2017, 09:22 PM
Replies: 85
Views: 3,501
Posted By Eyleron
Yeah, BBC liked hardboard, Tim likes membrane,...

Yeah, BBC liked hardboard, Tim likes membrane, someone loosely hangs membrane, ugh. At least I found a link there to cheaper vinyl:...
Forum: DIY Speakers and Subs   02-24-2017, 07:13 PM
Replies: 85
Views: 3,501
Posted By Eyleron
Gearslutz membrane traps:...

Gearslutz membrane traps: https://www.gearslutz.com/board/bass-traps-acoustic-panels-foam-etc/743040-tims-limp-mass-bass-absorbers.html

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Forum: DIY Speakers and Subs   02-24-2017, 04:19 PM
Replies: 85
Views: 3,501
Posted By Eyleron
? Do you mean vendors offer free trials with free...

? Do you mean vendors offer free trials with free return shipping? Or to DIY some?
Forum: Dedicated Theater Design & Construction   02-23-2017, 02:51 PM
Replies: 31
Views: 945
Posted By Eyleron
I'm not sure how much absorption the Green Glue...

I'm not sure how much absorption the Green Glue provides, but if you want to damp resonances, you want the walls to flex more not less.

Absorption != Transmission Loss; for instance, extremely...
Forum: Dedicated Theater Design & Construction   02-22-2017, 04:00 PM
Replies: 31
Views: 945
Posted By Eyleron
I spent a couple hours yesterday playing with a...

I spent a couple hours yesterday playing with a couple Safe n' Sound broadband/bass traps and random pieces and rolls of fluffy, moving to sides, behind, above speakers. Measuring w REW. Some changes...
Forum: DIY Speakers and Subs   02-22-2017, 03:56 PM
Replies: 85
Views: 3,501
Posted By Eyleron
How are you guys getting around SBIR effects that...

How are you guys getting around SBIR effects that suck out mid-bass...125Hz to 250Hz ?
If they're not in a baffle wall, and they're within 4 feet of the front wall...is the only solution a foot of...
Forum: DIY Speakers and Subs   02-22-2017, 03:49 PM
Replies: 284
Views: 15,167
Posted By Eyleron
Yeah, with the UPA-7 at 6ohms ~ 90w (I read it's...

Yeah, with the UPA-7 at 6ohms ~ 90w (I read it's 100w 4ohms), and then figure the speakers are near boundaries, and unless the room is completely dead it won't lose 6dB double-distance, so it should...
Forum: Speakers   02-21-2017, 02:01 PM
Replies: 2,215
Views: 87,288
Posted By Eyleron
Sorry, I was making a distinction between...

Sorry, I was making a distinction between measuring at seats, versus measuring at different points in the room, not necessarily at seats.
Forum: Speakers   02-21-2017, 12:32 PM
Replies: 15
Views: 192
Posted By Eyleron
You asked how loud can those slim Elac play, so I...

You asked how loud can those slim Elac play, so I answered in terms of decibels in your room, at 12 feet away.
Sit 6 feet away? Then they'd be 3dB-ish louder.

Since they say 140 watts is their...
Forum: Speakers   02-21-2017, 10:54 AM
Replies: 15
Views: 192
Posted By Eyleron
Yeah, and sensitivity is given in terms of volts,...

Yeah, and sensitivity is given in terms of volts, so that would be 2w out of the amp to yield 85dB 1m. 1w would be 82dB.

At its toughest minimum impedance of 3.4 ohms, with your amp that will put...
Forum: Speakers   02-21-2017, 08:54 AM
Replies: 2,215
Views: 87,288
Posted By Eyleron
This is from the Audessey FAQ:

This is from the Audessey FAQ:
Forum: Speakers   02-20-2017, 07:34 PM
Replies: 978
Views: 132,376
Posted By Eyleron
Jbl am6215/95, am5215/64

I finally added the AM6215/95 and the AM5215/64.
http://i.ebayimg.com/00/s/NTEwWDMzOA==/z/CsIAAOSwIgNXm6G~/$_58.JPG
This is an installed speaker with a 15" and a horn loaded compression driver....
Forum: Speakers   02-20-2017, 07:07 PM
Replies: 978
Views: 132,376
Posted By Eyleron
Jbl lsr6328p

This is a $1,500 nearfield monitor with an 8" woofer with a compression driver in the EOS waveguide. It isn't a great choice at theater distances.
Forum: Receivers, Amps, and Processors   02-19-2017, 01:35 AM
Replies: 3
Views: 81
Posted By Eyleron
I had this too in right front. I am handling via...

I had this too in right front. I am handling via warranty.
First I checked wiring, modes, etc.

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Forum: Audio Theory, Setup, and Chat   02-16-2017, 04:15 PM
Replies: 79
Views: 1,482
Posted By Eyleron
I agree. As I read about how < 3" is eq'ing the...

I agree. As I read about how < 3" is eq'ing the "sound" (by eq'ing the reflections) I raised an eyebrow and I've struggled to reconcile.
Currently, I'm trying to reconcile why Toole says carpet...
Forum: Speakers   02-16-2017, 11:32 AM
Replies: 39
Views: 996
Posted By Eyleron
For concert discs, you might have a surround...

For concert discs, you might have a surround channel that is playing a full bandwidth signal.
For concert volume levels, you might have a lot of demand on the speaker.

So for some people it won't...
Forum: DIY Speakers and Subs   02-15-2017, 10:25 AM
Replies: 49
Views: 1,207
Posted By Eyleron
My interpretation of his findings is (at the...

My interpretation of his findings is (at the moment...still trying to grok):

First Lateral Reflections
If the first lateral reflections are > 30ms, at least diffuse, if not absorb, so you don't...
Forum: DIY Speakers and Subs   02-14-2017, 07:49 PM
Replies: 49
Views: 1,207
Posted By Eyleron
I recall Toole saying people didn't find the...

I recall Toole saying people didn't find the reflections objectionable until like 30-40ms. Under that, it was pleasant, widened sound stage, intelligible.
Here's a quote from the first page of this...
Forum: DIY Speakers and Subs   02-14-2017, 06:40 PM
Replies: 49
Views: 1,207
Posted By Eyleron
Toole: Room reflections, human adaptation, what listeners prefer

Here's some Toole at Audioholics that's recent. Yeah, this is my struggle. I don't ever find him saying, "Get rid of those early < 10ms or 20ms early reflections". So I can only conclude he's saying...
Forum: Speakers   02-14-2017, 03:44 PM
Replies: 1
Views: 43
Posted By Eyleron
So when you write "3.1.4" you mean four over-head...

So when you write "3.1.4" you mean four over-head Atmos speakers, but not have any surround-side or surround-backs?

I would think you'd at least want the main speakers to include surround sides,...
Forum: Speakers   02-13-2017, 12:27 PM
Replies: 2,215
Views: 87,288
Posted By Eyleron
http://screencrush.com/442/files/2015/02/precogs3....

http://screencrush.com/442/files/2015/02/precogs3.jpg

https://s-media-cache-ak0.pinimg.com/originals/01/3c/9c/013c9ced570f60055535e926fe90ae80.jpg
Forum: Speakers   02-12-2017, 05:02 PM
Replies: 1
Views: 48
Posted By Eyleron
You can see many examples of screen walls in the...

You can see many examples of screen walls in the dedicated theater building area.

Add insulation behind the speakers, keep a couple inches of distance from the rear port and the wall, and have...
Forum: Speakers   02-12-2017, 04:55 PM
Replies: 3
Views: 82
Posted By Eyleron
I think the point is that they're surround...

I think the point is that they're surround speakers, and they were intended to provide wide coverage and not image well.

Nowadays, one could choose between more pinpoint imaging surrounds or more...
Forum: Speakers   02-12-2017, 04:48 PM
Replies: 3
Views: 82
Posted By Eyleron
To answer your question: yes. :) Look up...

To answer your question: yes. :)

Look up radiation patterns at different frequencies. Look at polar plots. Diagrams of full space, half space, quarter space.

You'll see how bass will wrap...
Forum: DIY Speakers and Subs   02-11-2017, 11:56 PM
Replies: 49
Views: 1,207
Posted By Eyleron
Sound Reproduction: The Acoustics and...

Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms

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