acoustat6
Responses from acoustat6
| Testing speakers in room Hi Newbee, nice post. It would do well to know what is happening between 20hz and 40hz as you only have one measurement (32hz) within this octave. As well as between all of the other measurements since 60hz to 80hz is a 20hz span, a lot can be hap... | |
| Subs & Group Delay Hi Shadorne, Now I am with you! But I think the numbers and their implications are a bit exaggerated. It looks to me you are using the Robinson Dadson cure as opposed to the Fletcher Munson. I see that at 80db the R-D curve is up 30db (not 40db) a... | |
| Subs & Group Delay Hi Shadorne, I dont know where to go with my reply to your post above (six above). But I must say it has me "confused". Where you wrote,"It is pretty impressive yes but a far cry from a crushing SPL due to the fact we can barely hear 20 Hz. For co... | |
| Subsonic Rumble Solutions Hi Bob#1, you said, "It is not audible on my speakers (which go down to about 30Hz I would guess, but due to the slope is probably still putting out into the 20's but at a lower level). The pumping on the....Not to be argumenative or anything, but... | |
| Testing speakers in room Hello,I wrote, "4) The difference between 75 and 80 db is twice as loud!"Actually it is the difference from 75db to 85db.Bob | |
| Subs & Group Delay Hi Duke, you said, "In my opinion the in-room frequency response makes a bigger difference."How close of a freq response do you think is "needed", for low freq say from 20 to 100hz to sound good? My thought is +- 3db with one to two peaks and null... | |
| How to diagnose the need for room treatment? Hi Ghstaudio, I assume you are using the Radio Shack microphone/Spl meter (although you did say a good microphone so its probably not Radio Shack). But If you are buying a microphone and you need a SPL meter, just buy the Radio Shack unit. It is m... | |
| How to diagnose the need for room treatment? Hi KR4, That is true. But first one has to identify the problems. How you correct it and how much you wish to achieve is up to each audiophile.The problem I see is that, very few know what they are dealing with, as far as in room response is conce... | |
| How to diagnose the need for room treatment? Al said, "I believe that some of the MORE SOPHISTICATED ( AND EXPENSIVE) equipment that does this sort of thing can help to take arrival time into account, in a meaningful manner," I take exception to those statements. The REW (Room EQ Wizard avai... | |
| Subsonic Rumble Solutions Hi Bob, I agree, I too have some lps that have lots of low freq abberations (rumble and high levels of 20hz and below noise) and others I play are "close to perfect", very little rumble but the 20hz and down "noise" is there no matter what. This i... | |
| Testing speakers in room Hi Magister, The way you are measuring is not a high enough resolution and it is only part of the story. You also need to see waterfall plots and RT60 times. The best way to do this is with the FREE program REW (Room EQ Wizard) available for FREE ... | |
| Subsonic Rumble Solutions Hi Koegz, I am sure your system is capable of great sound, you will not get an argument from me there. And I assure you I am reading the same post.I dont believe Bob#1s (ptmconsulting) issue is his tt, but the fact that he is able to reproduce the... | |
| Subsonic Rumble Solutions Hi Koegz, I was indeed suggesting that your system is not reproducing below 20hz and perhaps not even below 30hz.Thats OK, no problem there, I am sure it sounds great!Bob | |
| Subsonic Rumble Solutions Koegz said, "the "rumbling" or "pumping" is not, i repeat, not a part of the vinyl medium that we must live with!"I say that's true, only if your system is not able to reproduce it. Then you have nothing to worry about.Bob | |
| How to reproduce sound of piano Hi Shadorne, Great article that I had not seen before. It helps explain a few thing I have thoughts about. And confirming others.Bob |