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Post by Deleted on Jun 6, 2012 11:58:28 GMT
Dave Although I would have liked to see your crossover at a higher frequency, I believe that your findings are correct, and that Frans's "guesstimation" of how high a frequency you are likely to be able to hear is way above what it is really likely to be for a typical72 year old without hearing damage, Alex www.roger-russell.com/hearing/hearing.htm#ageAttachments:
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Post by Deleted on Jun 6, 2012 12:06:57 GMT
Holy mackerel !
-30dB at 8kHz already at my age. I know my hearing isn't nearly as good as in my 20's. Must do a frequency plot of my own hearing at treshold levels and see if I can validate this. At age 65 2kHz will be perceived twice as soft as 1kHz already.
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Post by Deleted on Jun 6, 2012 12:14:29 GMT
Holy mackerel ! -30dB at 8kHz already at my age. I know my hearing isn't nearly as good as in my 20's. Must do a frequency plot of my own hearing at treshold levels and see if I can validate this. At age 65 2kHz will be perceived twice as soft as 1kHz already. Frans Dpn't worry about it . My Neurologist tells me, as Dale has already said slightly differently in another thread, that the close coupling to the ears using quality headphones helps to overcome age related hearing loss. Alex
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Post by Deleted on Jun 6, 2012 12:23:30 GMT
On THAT we can most certainly agree.
I had been almost deaf by a heavy ear infection for about 6 months (over 10 years ago) and did not enjoy my speakers since then but COULD enjoy my headphones and still hear O.K.
After seeing specialists, homeopathy and MD they all say it couldn't be restored to what it was and my ears were CLEAN and showed minor 'damage' to the higher frequencies. Still couldn't hear speakers well (all beautifull detail on them was lost to the point I did not enjoy it anymore) BUT headphones were still pretty O.K. not like it was before the ear infection but noticeable better than free air sounds (not only speakers... all sounds)
One day one of my ears (due to usage of ear plugs pushing in ear grease over time) was filled almost shut with wax and had to be cleaned out. So I went in and had them flushed....
Dammit should have done that 5 or 6 years earlier all the highs and details returned ! At least I enjoy speakers again as much as headphones.
I hope this doesn't mean ave should add thweeters to his headphones as well now.
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Post by Deleted on Jun 6, 2012 12:39:10 GMT
Frans Many years a go, a workmate who was also involved with musos was nicknamed DC1 ( Deaf C--t 1) by other staff members.One day he had his ears done too, but didn't let on to the others, so he could hear what they were saying behind his back. That afternoon he gave me a lift home, and complained the whole trip about the rustling and squeaking from his leather jacket. Alex
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Post by Deleted on Jun 6, 2012 13:08:22 GMT
Frans, Thanks for your kind advice - I really do appreciate it even if I don't fully understand it . Yes it really does ehance my experience so I'm sticking with it, but not to the point that I don't think it can be improved so any further advice will be well received . I've just had a listen after changing the PSUs over and it was still cutting out on the right channel when the volume is slightly above (and around) the comfortable listening level (on some tracks). The next thing I did was swap the super tweeters (much easier to do with my set up than swap the main speakers) and, touch wood , it hasn't dropped out at all yet and I've got the volume up above the level it was dropping out before. This is based on a 10 minute listening session so not definitive yet.To confirm, just by changing over the super tweeters to the other channels seems to have stopped it dropping out. Updated below. I've got about half an hour to test further as SWMBO is off at the local supermarket - I'll post longer term results later. Meanwhile, thanks for your advice on Wallpurgis's comments on capacitors - I'll quietly file it away for the time being . Dave. EDIT: I've just put the two pieces of open black plastic foam under the super tweeters and it has almost completely disconnected them from the main speaker cabinets to my touch. I can only just feel the low thumping bass now when touching the STs.
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Post by Deleted on Jun 6, 2012 13:34:19 GMT
I was annoyed and relieved at the same time when I heard all those 'soft' noises again quite loud. It was as if the volume knob and the treble were instantly pushed upwards. This effect faded soon and heard 'normal' after a short while again. The brain adapts pretty fast to 'different' input signals.
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Post by Deleted on Jun 6, 2012 14:19:13 GMT
Update: - My system gets louder over the first 20 to 30 minutes and after a while the LEFT channel dropped out a few times - that is the same ST as when it was on the right channel. To be fair, the volume level at which it began to drop out was above my comfortable listening levels and turning the volume down to more normal levels stopped it dropping out. It looks to me to be a borderline problem with the one ST but I know nowt!! I can also add that 'levelling' the STs by folding the soft plastic foam so as twoo layers were at the front and only one at the back has virtually eliminated any vibration passing from the main speaker cabinets. Dave.
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Post by bdiament on Jul 30, 2012 19:07:24 GMT
Hi solderdude, ...Strangely enough burning a DVD with different formats is equal in costs of production and 'effort' yet there seems to be a price difference. It appears to me the guy is mostly in it for the money as the differences in quality and production costs are hardly related/defendable otherwise... Actually, this is wrong on all counts. First, it takes longer to burn 4 gigs than it takes to burn 2 gigs. In fact, it takes twice as long. Our custom formats are all burned individually, one at a time, at slow speed. This takes time and man-hours cost money. Second, since you don't know me at all and clearly don't know what is involved in custom burning our DVDs or how long it takes or the sort of time and effort involved in verifying every burn, I take offense at the suggestion that I'm "mostly in it for the money". Clearly that is your perception (as you said) but it is a mis-perception. If you had the vaguest idea of what is involved in making a Soundkeeper Recording and if you had the vaguest idea of my motivations for doing them, or the percentage of every sale that goes directly to the artist, or how little I keep (aside from the satisfaction I get from doing this) you would not have posted what amounts to a libelous assault. Certainly, no one is forcing you to purchase Soundkeeper Recordings are they? If anyone is, please let me know and I promise to make them desist. Best regards, Barry www.soundkeeperrecordings.comwww.barrydiamentaudio.com
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Post by dalethorn on Jul 31, 2012 14:05:25 GMT
Holy mackerel ! -30dB at 8kHz already at my age. I know my hearing isn't nearly as good as in my 20's. Must do a frequency plot of my own hearing at treshold levels and see if I can validate this. At age 65 2kHz will be perceived twice as soft as 1kHz already. I may have said it before but there is no significant age-related hearing loss, per se. There is health-related hearing loss, and health usually but not always tracks down with age. My hearing is 100 percent at 10 khz at 64-1/2 years, and down a few db by 12 khz. I hear 16 khz faintly, but it's distinctly 16 khz, since the tone is unmistakeable. I find most of the hi-fi headphones by Beyer, Sennheiser and Shure to be too bright, although the Shure 1840 isn't bad. I remember running these tests in 1974 with the Stereophile LP's and a Shure V15 MK5(?) cartridge, and there wasn't much difference. Using Stax SRX MK3 headphone. Edit: If that -30 db is just an absolute measurement, I wonder if the normalized value is really that much? Normalized for a young person, that is, since I wouldn't expect even a young person to hear "flat" to high frequencies.
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