polizzio
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Posts posted by polizzio
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Congrats on the new to you K horns and welcome to the forum.
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2 hours ago, Randyh said:
he makes 2x more money than Brady
Not true, not even close. Do you actually look up this stuff before you just spit it out?
Brady contract: https://www.spotrac.com/nfl/new-england-patriots/tom-brady-4619/
Garoppolo contract: https://www.spotrac.com/nfl/san-francisco-49ers/jimmy-garoppolo-14472/
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1 hour ago, JohnA said:
Polizzio, I think your curves are showing some room effects. The 100 Hz and perhaps the 200 Hz dips and that implies the 50 Hz bump may all be related to a room dimension. 1130 ft/sec/100 cycles/sec = 11.3 ft. (50 Hz = 22.6 ft). What do you have that is 11.3 feet away? Back wall, diagonal to back wall and ceiling, room width or depth, first reflection off floor or ceiling?
No doubt John, there is a wall 10 foot away from the speaker motorboard (I just measured) and a really large bean bag chair occupying the room. Its a spare BR so its easy to close the door and reap the acoustic benefits. I took those measurements above @ ~ 1.5 meters, and the test signals @ 75 db (black line in charts above). I was trying to minimize room/furnishings reflections, but I'm sure they still are there, play a part in the results.
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And with the SVS sub added. Imagine a $180 (factory B stock, and home made speaker stands) pair of bookshelf speakers with the sub, reproducing down to 22hz with authority. Total speaker + sub cost.....$580. Sealed cab speakers (port plugged) and sealed cab sub I might add.
Need some EQ to fix that pesky 50 hz peak
These Elacs sound really good by themselves, this is my second pair purchased. First pair @ my desktop pc.
I apologize my graphs are not as pretty and well detailed as some here. This was my first couple days with the REW software and clearly i need to learn more about capturing graph data/display better. Simple but accurate.
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double post, my bad.
Well then, lets insert the graphs. Bottom graph is BR port plugged, same speaker:
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9 hours ago, Randyh said:
perfect answer -
a bad answer imo. See my post above.
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8 hours ago, DavidF said:
If you block a port in an enclosure designed with a woofer optimized for that enclosure size you will end up with a too-large enclosure and a low-Q bass loading for a sealed system. You will end up with a shelved low bass response tapering off up around 200Hz and well down in bass response below 100 Hz compared to that same woofer in the ported enclosure. You might gain some power handling but you shoot the bass response all to heck. I would not suggest to anyone that plugging the port of the IV, or adding a vent to the III is a good idea.
I just performed this test a couple weeks ago with my Elac 6.2 bookshelf bass reflex speakers, multiple tests with REW and my new miniDSP umik, in both "sealed mode (port plugged using a piece of tight fitting foam)" and stock as designed and delivered BR cab. The effect in this case was a loss approx 10hz extension starting @ 50 hz with my speakers. And a loss of db @ 45 hz. Nothing like what you state above. I ran these tests out of curiosity, as i went on to add a sealed sub to the mix, and more tests. Most of the end effect in my case was a loss/reduction of output starting @ 48 hz and below.
I can post the response graphs if you need visual proof. Nothing happened like you depict above.
Use some common sense. Both the Her III and IV use the same LF transducer, the K-28-E. The end effect of porting the new IV cab was ~ 10hz lower bass extension, from 58 to ~ 48hz, Klipsch published data. I seriously doubt if you were to put a foam plug in the rear port of a IV, you would lose bass output < 100hz as you declare. Sure didn't work that way in the multiple tests I conducted on my Elac bookshelf speakers. If somebody wants to send me a Her III and IV, I would be happy to perform similar testing
and return them.
Have you ever actually tried this experiment yourself, sealed vs bass reflex -same speaker, conducted precise frequency response testing?
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1 minute ago, wvu80 said:
I know that was true back in the Good Old Days, but I think now they get paid. It seems to me that the military had to pay the NFL to do the flyovers. I don't know about now.
Still zero comp.
https://www.delish.com/food-news/a30730797/super-bowl-halftime-show-money/
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Really nice looking Dave. I wouldn't mind those sitting in my LR. I bet they will sound really good; even more pleasing knowing you built them.
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55 minutes ago, Chris A said:
And with that...
Chris
No direct response.......ok then. I did say respectfully in my opening. I guess no direct response is a response. So be it.
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On 1/31/2020 at 7:56 AM, Chris A said:
In directivity, the horn is larger than the 1/2 wavelength distance across the mouth of the horn (vertically and horizontally). If the exiting acoustic wave has a longer wavelength (i.e., lower frequency) than 1/2 wavelength, you lose directivity control, and the exiting wave quickly expands to cover a full 360 degrees in three-dimension space. So directivity is not really a factor in placement of subwoofers in rooms where all subwoofers--including horn-loaded ones of a mouth size that's less than a metre in minimum dimensions immediately lose directivity below ~170 Hz.
See above.........so is it < 170 or 80 hz?
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15 hours ago, Chris A said:
My experience is that once a full wavelength of sound cannot fit into the minimum dimension of the room, the concept of directivity has no real effect. For an 8' ceiling, that would be 142 Hz, for 9', that's 126 Hz, etc. While there may be instances where you might be able to tell if a horn subwoofer in one corner isn't playing, but another subwoofer in another corner is playing, but that's sort of a gross level of "directivity detection" that goes with human hearing abilities. Once you're below 80 Hz, directivity in a home-sized listening room doesn't have much evidence or meaning.
Chris
Respectfully, I just don't agree with this. Sometimes all this theory is superseded by actual experiences. I had to move my SVS DR sealed sub to a corner behind a chair because my new cornwalls are pretty wide (space limitations). My sub is crossed @ 40 hz. I can tell where that sub is all day, its location when reproducing sound. It's performance was much better in the front corner projecting diagonally into the room with the narrower RP-280 front mains.
More proof.......how many users advocate a pair of subs versus a single in some scenarios?
If the unit output volume is sufficient and clean, why would anybody need two subs in their room if Chris's theory above is true?
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58F and cloudy. But no rain or snow
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26 minutes ago, CECAA850 said:
I would have never guessed that you were heavy by looking at your avatar. You seem fit.
Pictures can be deceptive
Heavy is too nice.......more like obese porker.
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1 hour ago, mr clean said:
The first half of a guys life, a lot of times is spent trying to tear our bodies down. If your lucky you realize this, and try to get a little smarter, and changing your way of living for the better. Im really doing great on what I am eating, and it is making me feel so much better! I never smoked cigs, but used to smoke pot quite a lot. I had been going to the same doctor for some time, and told him I wanted to get off the low dose blood pressure med, I am taking. I think he was half joking but he ask me if I was a hippie for for not wanting to take a pill every day. Im now going to a new doctor, and told her I have two goals. Getting off the BP pill and getting my weight down to below what is considered obese. First of the year my weight was 244 at the doctor. Im down 14 pounds already! Really watching my salt and sugar. Im 6 ft and if I can get down to 200 or so pounds I will be happy. I have always loved food and it is my worst addiction. I would never thought I would have cared about my health when I was younger. I can feel my aches and pains going away, and i am thinking more clearly also. I do cheat a little one day a week to keep me honest the rest of the time. I was sitting at the market waiting for the wife last night, and saw this young guy getting shopping carts. He was way to heavy for being that young and sucking on a vape. I could see his future very easily. But sometimes its harder to see your own. BigStewMan I use powered coconut milk in my coffee now. Its suppose to regulate breathing. I mix it with a little organic whole milk and it tastes great! Very healthy.
Congrats on the 14 lbs lost. I'm in the same boat, 6' and fatter than I ever have been. 269 on the scale this morning. I understand the equation "move more eat less" but its hard to implement, least for me. I like food and we have so much good food down here. While i was in the bar ( a very rare occasion for me) yesterday at the lakefront, a guy who has been making hoghead cheese for 40 years was there so we had a brunch of hoghead, crackers, pickled veggies (peppers, onions, squash, cucumbers) and beer. It was very tasty.
I have to make adjustments. Pushing that non-propelled mower around come March/April is waiting for me. More exercise and eat healthier; eat to live and not the other way around.
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Lost in Space.........the re-boot.
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3 hours ago, BigStewMan said:
When I left the hospital, he was sitting on a bench out front smoking a cigarette. I was actually a bit pissed off and wanted to tell him that I spent the past eight hours listening to him cry like a baby and here he is smoking immediately after he walks out of the hospital.
I haven't smoked in decades.
He is weak and cannot control it. I quit smoking cigars and cigarettes cold turkey Feb 2007 after some 35 years. One of the best things I have ever done in my life. Just yesterday I visited a lounge where a neighbor works in Mandeville on the scenic shore of Lake Ponchartrain. The doors were wide open as it was a pleasant day. Half of the people in there were smoking. It irritated the hell out of me and I doubt I shall return. I was surprised you can smoke in a lounge in LA today, its banned in restaurants state wide. Bars and lounges depend on local laws least in LA.
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These Elacs sound really good by themselves, this is my second pair purchased. First pair @ my desktop pc.
NFL 2019
in Lounge
Posted
Somebody very BIG sent a text out congratulating the state of Kansas and its residents for the superbowl win last night. He soon deleted it. But many captured it in screen shots
Can I get a map and a Sharpie please?