novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,230
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Post by novisnick on Dec 24, 2021 12:11:05 GMT -5
Since I was scheduled for blood work yesterday, I've been BRUTAL with my diet this month - limiting carbs & sugars to the point where I've been flirting with Ketosis all month long. Despite my efforts, my blood sugar has been in the range of 140 to 160 every single morning, with an occasional 170. So after my samples were taken yesterday morning, I decided that since it was coming on Christmas, I'd splurge a bit. Yesterday, I had a BIG egg-nog with lots of alcohol, a chocolate cupcake for lunch, and some rice with my gumbo. Got up this morning with the expectation that my blood sugar would be bumping 200 - and... Wait for it... My effing blood sugar rang in at 125! This is contrary to what logic predicts. WHY the eff am I able to wake up with a 125 for blood sugar the day after blowing my diet to shreds? Was my body so starved for sugar that it just processed what I ate the way it should have? Had I built up an insulin reserve by being so strict with my diet for so long? Did Santa Clause come early and roll back my body chemistry by a decade? I need to check my crotch to see if the situation is similarly miraculous. If so, it's time to go find a Christmas strumpet! LOL I can NOT explain your sugar levels but the picture surly depicts suicide! Perhaps a year supply in your youth. LOL Merry Christmas and add more alcohol. 😂🤣😂🤣😂🤣🎅
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Post by Boomzilla on Dec 24, 2021 14:53:17 GMT -5
I can NOT explain your sugar levels but the picture surly depicts suicide! Perhaps a year supply in your youth. LOL Merry Christmas and add more alcohol. 😂🤣😂🤣😂🤣🎅 It might be suicide, but at least I'd die happy!
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Post by leonski on Dec 24, 2021 15:31:59 GMT -5
What has been omitted up to now? Frequencies over a certain point.....somewhere in the80hz to 100hz region begin to be localizable by EAR. I like sound to seem to come from one place, not various places. So when you cross LOW, the overtones can come from the mains which provides image / depth / width......And the LOWEST frequcncies disappear, in a sense... When I flip my fairly LOW crossover point sub to 'OFF', the image collapses. Yet the crossove is 24db /octave at maybe 45hz or so......which means I'm STILL getting useful output 1 octave over that point or higher.... And this is at normal to low movie watching levels.
Good luck on the Sugar Levels. Soemtimes NO reason seems to make sense for an excursion. The trick is a constant managment program. Also? I don't want you to 'publish'? But what IS YOUR A1C which is a measure over time.....And would seem to count 'more' than an occassional spike.
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Post by Boomzilla on Dec 24, 2021 15:42:29 GMT -5
Just drew the sample yesterday - no result yet.
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Post by drtrey3 on Dec 27, 2021 11:00:24 GMT -5
Since I was scheduled for blood work yesterday, I've been BRUTAL with my diet this month - limiting carbs & sugars to the point where I've been flirting with Ketosis all month long. Despite my efforts, my blood sugar has been in the range of 140 to 160 every single morning, with an occasional 170. So after my samples were taken yesterday morning, I decided that since it was coming on Christmas, I'd splurge a bit. Yesterday, I had a BIG egg-nog with lots of alcohol, a chocolate cupcake for lunch, and some rice with my gumbo. Got up this morning with the expectation that my blood sugar would be bumping 200 - and... Wait for it... My effing blood sugar rang in at 125! This is contrary to what logic predicts. WHY the eff am I able to wake up with a 125 for blood sugar the day after blowing my diet to shreds? Was my body so starved for sugar that it just processed what I ate the way it should have? Had I built up an insulin reserve by being so strict with my diet for so long? Did Santa Clause come early and roll back my body chemistry by a decade? I need to check my crotch to see if the situation is similarly miraculous. If so, it's time to go find a Christmas strumpet! LOL Weird huh? I had a bit of a Christmas miracle with my knees. I have been carting a walker in back of my car just in case I really can't limp down the halls on my arthritic knees. From the week before Christmas until now I have been walking really well and hurting barely at all. I have lost maybe 15 pounds, but I am a big fat guy and do not see that making much of a difference. I am just thanking the Lord for a Christmas miracle and enjoying every day it lasts. Trey
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Post by leonski on Dec 27, 2021 16:51:18 GMT -5
15lb is NOT a trivial amount......unless you are in the rare air of 450 PLUS......
Keep up the good work and MAYBE find a POOL to exercise in which will provide motion without joint stress?
ASK YOUR DOCTOR, maybe, first?
When I'm achy, a dip in the ocean works for me.....in SUMMER when I can get water temp over 66f or 67f which is 'doable'.....
If those Santa Babes were at the beach? I'd be STUCK in the water for a while.....
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Post by Boomzilla on Dec 27, 2021 18:02:18 GMT -5
That would be an involuntary physiological response above and beyond the swimming trunks?
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Post by Boomzilla on Dec 30, 2021 4:53:06 GMT -5
Subwoofer crossover slopes:
First, what's an "octave?" Simply half or twice the crossover frequency. With a 100Hz. crossover point, one octave above the crossover point is 100 x 2 (or 200Hz.). With the same 100Hz. crossover point, one octave below the crossover point is 100 divided by 2 (or 50Hz.).
Crossover orders:
1st order (6dB / octave) - Benefits: Phase coherent in the crossover range (both drivers in the same polarity) Minuses: Drivers must be linear two more octaves from crossover point (tweeters must be flat two octaves lower, woofers must be flat two octaves higher) & drivers must have higher power handling capability
2nd order (12dB / octave) - Benefits: Drivers must only be linear one octave from crossover point (tweeters must be flat one octave lower, woofers must be flat one octave higher) & power handling is less critical Minuses: Drivers are out of phase in the crossover range (drivers are wired in opposite polarities)
3rd order (18dB / octave) - Benefits: Drivers must only be linear for one half octave from crossover point & phase coherent in crossover range (both drivers in the same polarity) & power handling is far less critical Minuses: Crossover requires more parts and better design (is a LOT more expensive) & steep slopes can cause some ringing
4th order (24dB / octave) - Benefits: Driver performance outside the crossover zone can roll off immediately with no effect on the crossover & power handling is far less critical Minuses: Crossover requires more parts and better design (is a LOT more expensive) & steep slopes can cause some ringing & drivers are out of phase at crossover range (drivers are wired in opposite polarities)
Asymmetrical slopes can be used if the orders are both even or both odd (first order high-pass with third order low-pass, for example or second order high-pass with a fourth-order low pass). Crossovers are also easier to design if the downstream element is an electronic gain stage (flat input impedance through the audio band) rather than a transducer (speakers have varying, and sometimes widely varying impedances through the audio band). A passive "Zoebel" network can be used to flatten a driver's impedance, but may have unwanted effects on the driver's frequency response.
As a compromise between crossover cost & performance, most subwoofers use a cheaply-implemented second order crossover that isn't corrected for the actual driver impedance. The actual slope and frequency of the crossover may vary somewhat with the driver's impedance.
Much of the variation in analog crossovers can be eliminated by using digital filters instead. If used on low-pass legs of a crossover, the benefits generally outweigh the minuses, but if used on high-pass legs, whether or not the signal must be converted from analog to digital and then back from digital to analog for crossover application can become significant. If (and only if) an unconverted digital signal is being fed to the crossover can the crossover be applied without a significant and usually audible diminution of signal quality.
Boom
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Post by leonski on Jan 2, 2022 0:14:49 GMT -5
The main point I try to get folks to grasp is that 'crossover' and 'slope' do NOT end up with a 'brick wall' separation between drvers. There is always some overlap. You NEED this overlap. In addition to the electrical characteristics, is the driver itself. so the driver may reach a certain frequency and drop off at at certain slope while electrically it has a different crossover and slope. Somehow they must work together. My panels are 2-way. The woofer has a low pass filter at a certain frequency while the high pass is a little higher. So while the woofer is decreasing the tweeter is INcreasiing. Where the 2 curves cross is the actual crossover. Which may be 6 db or whatever beneath the average output. But this doesn't leave a GAP in response since the drivers SUM FLAT thru the crossover. the Glitch is that the HIGH pass is 6db / octave (simple capacitors) and the LOW pass is 12db / octave which consists of a single inductor (a coil, if you will) and a capaccitor. Since Each Way is 90 degrees? the 2 drivers are 90 degrees apart and that has some effects which need to be addressed in speaker placement and orientation......
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Post by Boomzilla on Jan 8, 2022 14:38:31 GMT -5
I'm mulling over the idea of replacing my Klipsch RP-600M speakers with some KEF LS50 Meta ones. In favor of the switch: The KEFs are probably more neutral than the Klipsches The KEFs probably image better than the Klipsches In favor of keeping what I've got: The Klipsch speakers are probably more dynamic at low volumes (where I mostly listen) I'll be using the electronic crossover in my Emotiva PT1 preamp with either pair of speakers, so they'll not have to reproduce anything much below 90 Hz. The low frequency work will be handled by a 15" sealed sub from Starke Sound. Although there ARE two KEF dealers in town, neither of them is inclined to loan speakers for home trials. So for anyone who has had personal experience with the KEF LS50 Meta speakers, how are they at low volumes? Are they like the Magnepans where they don't sound dynamic until after a certain "minimum loudness threshold" has been reached, or will they remain dynamic to lower levels? My amplifiers can feed either of the speakers with HUGE power reserves (250-350 watts per channel), and the amps sound dynamic even at <1 watt, but can the KEFs still sing at those soft levels? Thanks - Boom
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Post by leonski on Jan 8, 2022 17:20:50 GMT -5
Without regard to 'what people say' or any 'review'?
Test is YOU and YOUR ears in room......
I heard the LS50s many years ago with Parasound amps.....One of the reasons I later went with Parasound and while they WERE quite good, not in my line of taste / requirements.
That single-point driver really DOES live up to most of its advertising.....
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Post by leonski on Jan 9, 2022 0:06:16 GMT -5
One OTHER thing, Boom? IF you like the idea of a higher than average sensitivity speaker? AND still like the idea of horns / Klipsch?
I would and WILL eventually go to the KLIPSCH Heritage guys up in LaLa Land. The Forte IV is a very good and for some, an EndGame speaker.
I would be replacing my panels. I just am curious about OTHER stuff, now.....And would even consider building a pair of Mono Tube Amps from VTA.....
They get stellar press and of the documentation I've seen? Crystal Clear. The wife would LOVE IT if I took over the Dining Room Table for a couple weeks
while I built a couple amps. It could turn into a real character building experience.
I'm in favor of WHEN POSSIBLE to keep as much $$ in the country as possible. I don't know how well paid those boys in Hope AK are where they build 'em but
every little bit helps...
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Post by garbulky on Jan 9, 2022 1:56:20 GMT -5
I'm mulling over the idea of replacing my Klipsch RP-600M speakers with some KEF LS50 Meta ones. In favor of the switch: The KEFs are probably more neutral than the Klipsches The KEFs probably image better than the Klipsches In favor of keeping what I've got: The Klipsch speakers are probably more dynamic at low volumes (where I mostly listen) I'll be using the electronic crossover in my Emotiva PT1 preamp with either pair of speakers, so they'll not have to reproduce anything much below 90 Hz. The low frequency work will be handled by a 15" sealed sub from Starke Sound. Although there ARE two KEF dealers in town, neither of them is inclined to loan speakers for home trials. So for anyone who has had personal experience with the KEF LS50 Meta speakers, how are they at low volumes? Are they like the Magnepans where they don't sound dynamic until after a certain "minimum loudness threshold" has been reached, or will they remain dynamic to lower levels? My amplifiers can feed either of the speakers with HUGE power reserves (250-350 watts per channel), and the amps sound dynamic even at <1 watt, but can the KEFs still sing at those soft levels? Thanks - Boom You already had the ls50. Use that to guide you. I think the klipsch is better.
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Post by Boomzilla on Jan 9, 2022 9:05:11 GMT -5
I did have The KEFs previously. But they were the original versions. The new 12th generation drivers are reviewed as sounding “bigger, more-full, more open, and cleaner” than the originals. Is it true? I’d like to know.
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Post by mfeust on Jan 9, 2022 10:23:26 GMT -5
Only one way to know for sure. Buy'em and try'em.
Mark
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Post by monkumonku on Jan 9, 2022 11:59:32 GMT -5
I did have The KEFs previously. But they were the original versions. The new 12th generation drivers are reviewed as sounding “bigger, more-full, more open, and cleaner” than the originals. Is it true? I’d like to know. There's been a whole bunch of reviews and forum posts that deal with the difference between the original and new versions of those LS50's. So what is anyone in this Lounge going to add that is more credible than what has already been written? Are you going to believe responses to your question more than the reviews and posts already out there? Only way you're going to know is by getting a pair and listening for yourself. So be an audiophile and pull out your wallet, man!
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Post by Boomzilla on Jan 9, 2022 12:29:23 GMT -5
Why am I asking for specific info rather than relying on the online reviews? Because the reviews I've read / seen so far don't specifically address the low-volume dynamics of the speakers. In fact, most reviews don't at all mention what volume the listening was done at. But someone who actually owns the speakers (and has listened to them AFTER they've broken in) would probably know the answer that I'm looking for. Reviewers are loaned the products that they review, but most of the loans are not "long term." Further, most reviewers probably didn't listen at as low a volume as I do when writing their reviews (this is speculation on my part, but a reasonable speculation based on the listening levels that I've heard from my audio amigos' systems). Usually, I don't mind buying used audio gear (even speakers), but I'm reluctant to do so with KEF Uni-Q speakers. They (in my experience) can be easily overdriven, and damaged while still remaining functional. The 5.25 inch woofer in the speakers doesn't take well to high volumes, and many systems still send full-range signals to the satellite speakers even with a subwoofer in use. The sales people at the local Magnolia kiosk in Best Buy agree with my assessment of used KEF speakers. What does a damaged KEF Uni-Q speaker sound like? In my experience, the crossover becomes significantly more audible (possible crossover component damage?), the midrange texture becomes more grainy (makes singers sound like they have a sore throat), and the high treble disappears, leaving only lower treble response. In retrospect, I think that the first pair of KEF LS50 speakers I bought (used) had been overdriven in their past, because I heard almost all of the effects I just mentioned in that pair. The speakers still worked - they just didn't sound anywhere near their best. If I DO decide to try the KEF LS50 Meta speakers, I'm NOT buying a used or demo pair from any local shop - I'm ordering directly from KEF. But even that decision is up in the air. The Emotiva T1+ speakers are attractive, as are the Magnepan 1.7 speakers. I'm less inclined toward the Maggies because of my previous experiences with their "need a minimum loudness before they sound dynamic" proclivities. And an "out in left field" choice is still the Klipsch La Scalas. Although they'd need some serious DSP to be even remotely flat, they are more dynamic at low volumes than any other speaker I've heard.
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Post by monkumonku on Jan 9, 2022 12:40:15 GMT -5
Why am I asking for specific info rather than relying on the online reviews? Because the reviews I've read / seen so far don't specifically address the low-volume dynamics of the speakers. In fact, most reviews don't at all mention what volume the listening was done at. But someone who actually owns the speakers (and has listened to them AFTER they've broken in) would probably know the answer that I'm looking for. Reviewers are loaned the products that they review, but most of the loans are not "long term." Further, most reviewers probably didn't listen at as low a volume as I do when writing their reviews (this is speculation on my part, but a reasonable speculation based on the listening levels that I've heard from my audio amigos' systems). Usually, I don't mind buying used audio gear (even speakers), but I'm reluctant to do so with KEF Uni-Q speakers. They (in my experience) can be easily overdriven, and damaged while still remaining functional. The 5.25 inch woofer in the speakers doesn't take well to high volumes, and many systems still send full-range signals to the satellite speakers even with a subwoofer in use. The sales people at the local Magnolia kiosk in Best Buy agree with my assessment of used KEF speakers. What does a damaged KEF Uni-Q speaker sound like? In my experience, the crossover becomes significantly more audible (possible crossover component damage?), the midrange texture becomes more grainy (makes singers sound like they have a sore throat), and the high treble disappears, leaving only lower treble response. In retrospect, I think that the first pair of KEF LS50 speakers I bought (used) had been overdriven in their past, because I heard almost all of the effects I just mentioned in that pair. The speakers still worked - they just didn't sound anywhere near their best. If I DO decide to try the KEF LS50 Meta speakers, I'm NOT buying a used or demo pair from any local shop - I'm ordering directly from KEF. But even that decision is up in the air. The Emotiva T2+ speakers are attractive, as are the Magnepan 1.7 speakers. I'm less inclined toward the Maggies because of my previous experiences with their "need a minimum loudness before they sound dynamic" proclivities. And an "out in left field" choice is still the Klipsch La Scalas. Although they'd need some serious DSP to be even remotely flat, they are more dynamic at low volumes than any other speaker I've heard. Well I hear what you're saying and read what you're writing but you're never going to really know until you listen for yourself. One person's definition of low-volume dynamics may be quite different than yours. That said, I had the LS50 Metas (never heard the originals) and have the Klipsch RP-600M. The LS50's are not very efficient and to me didn't seem as dynamic as the Klipsch. The sound character between the two is quite different as well, with the Klipsch being more forward. I thought the KEF's were a more polite or refined sounding speaker. I ended up selling them because they were good but nothing really stood out about them.
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Post by copperpipe on Jan 9, 2022 14:27:57 GMT -5
Welp, this is probably useless information... but I've owned the R300's for years and won't part with them. Pretty sure the LS50 and LS50 Metas and R300's etc are all the same here, they love power and sound better with a bit of volume. I have 2 mini x's and the R300's definitely respond to bi-amping, even at normal levels.
As for what the Meta's bring to the table... soundstage and imaging for a start, and a pretty neutral frequency. You simply cannot get better imaging and soundstage than what you get from the uni-q's and a single pin-point source. The LS variants are even better than the R300 in that respect, though I traded that for more bass and a slightly "more pleasing" sound (less neutral). I can't imagine trading them for honking horns and ear fatigue (read: klipsch) but we're all different.
Reviewer's love them, though I suspect most here won't care about that. Andrew Robininson's review was positively glowing.
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Post by Boomzilla on Jan 9, 2022 16:03:00 GMT -5
Thank you, gentlemen - exactly what I wanted to know. Incorporating your opinions with those I've read online, I think I'm getting the best of both worlds currently with my Klipsch RP-600M speakers. I can tame their frequency response with a touch of DSP, and they still have dynamics (low level and above) that I want. So what my Klipsch speakers are currently giving me (KEF frequency flatness, but with Klipsch dynamics) will probably be Impossible to beat. Do my Klipsch speakers image as well as the KEFs would? Probably not, but the difference can't be too great, because the 600s are sounding good in my room.
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