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  1. #31

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    I lost maybe 10db in volume, and I lost alot of FR. The Bottum driver did FR from 30hz to 18hz. THe bad driver's surround looks brand new actually. No rubbing in the voice coil, it is just wore out. Its about 80% THD, and 20% bass. It is a 12" driver. It is 83 dollars for a new driver. Well Tour, the amp on it is 15 years old. The components inside the M&K are 15 years old! lol! Infact, while I was messing around with the M&K, i found out that the left input was bad! lol!
    www.Vr3Mods.com ///// www.Version3Audio.com

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  2. #32

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    How do you konw for sure that it is not the amp output that is bad and not the sub?

  3. #33

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    Nah the subwoofer is just old man. The drivers on my Dad's stereo is dieing too. He has a very 'high dollar' setup. The drivers are 15 years old...their dieing...
    www.Vr3Mods.com ///// www.Version3Audio.com

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  4. #34

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    from an electrical standpoint I thought that if the woof was clear of the voice coil and the surround was intact (and the v.c. is still in one piece) the woofer either works or not. Is your amplifier seperately powering each sub or are they in parallel? If they are sep. try switching the amp leads from 1 woof to the other.

  5. #35

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    Originally posted by Tour2ma
    Now as for the behavioral side…
    Guys, Sid, the reason is not likely to go near/ “hang” with us starts with the fact that we’re old. I’m sure that’s all he meant. As intelligent as he is, I am certain that he must be aware that homosexual child molestation is overwhelmingly the realm of sexually repressed adults who are unable and/or unwilling to admit their homosexuality. Right, Sid?
    Here's a hijack if I've ever seen one..........(wasn't the intention when I asked him to clarify)

    This isn't what this board is about but I need to address this. If Sid has something to say, then he needs to say it. If he wants to make implications about things, then step up and say what ya have to say Sid or keep your mouth shut. My impression is that he made the comment based on my being gay, which is ignorant and something that I guess should be expected(sadly) from someone of his age bracket (though it would appear that many adults don't have the type of maturity required to deal with that either). I do take issue with the generalization/allusion about child molestation being a homosexual thing. It is ABSOLUTELY a detestable act and I think we all know better than to attach that sickness onto one group of people. Sid, and a lot of the straight population, needs to realize that just because someone's gay doesn't mean that they're out to have sex with them just because they're of the same sex.......Gimme a break.

    I apologize if this comes off as preaching.......that's not the intent. My being gay is something that I hardly ever bring up to people, in fact it's often about the last thing that people would ever know about me. Make no mistake though that I'm not one to let it slide when people make derogatory comments/implications about it either. If the reason that someone doesn't like me is based on that issue at all, then they've got problems that they need to work out.

    On this note, I'm timing out for a short bit I think..........later
    Last edited by brettw22; 05-24-2003 at 02:48 PM.
    .
    comment comment comment comment. bitchy.
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  6. #36

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    Originally posted by caseymou
    from an electrical standpoint I thought that if the woof was clear of the voice coil and the surround was intact (and the v.c. is still in one piece) the woofer either works or not. Is your amplifier seperately powering each sub or are they in parallel? If they are sep. try switching the amp leads from 1 woof to the other.
    The subwoofer has its own amp. I have no clue how it is wired. I know there is either 125, or 150 watts going to 2 drivers.
    www.Vr3Mods.com ///// www.Version3Audio.com

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  7. #37

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    Brett:

    You are a valuable contributor to Club Polk, and sexual preferences hardly matter in cyberspace and I wouldn't let something Sid says get you bent out of shape. I now remember when you stated your sexual preference during the gay-o-meter thread, and I had simply forgotten about it two seconds after I read it. What matters to me (and should matter to all of us) is your audio/HT/EE knowledge, not what you do in the bedroom.

    Regarding the rest of this bizarre thread: There is no way a sub with 150 watts and two $80 drivers will blow away cutting edge competition costing many times more. There is nothing mysterious or magical about the M&K design or the quality of the amps or the drivers.

    The M&K MX-125 (the current equivalent of Sid's MX-90) has about the same output and clean extension as the Polk PSW650. It is grossly overpriced at $1,200 retail. Refer to Chart 2 in ths link. http://www.svsubwoofers.com/news_subcompare.htm

    M&K is a classic example of paying for the name, the dealers, the sales network, and the THX certification. Certainly, the top M&K subs perform well, but for the asking price, one can do much better. The $1,200 SVS PB2-Plus will equal and probably comfortably exceed the $2,900 M&K MX-5000 MKII in all measureable performance parameters.

    Doc
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
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  8. #38

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    Thanks for that Doc, Put sid and his "super" sub into perspective.. That not all subs are inferior to the M&K, maybe mine and others but not every sub, Overpriced and under performanced it seems by the charts via SVS, LOL :)
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2


    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC

  9. #39

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    Faster and Doc, Faster you misunderstood. Doc and I have been down this road before. The M&K, in my opinion vs. other subwoofers 'sound' is the M&K isnt louder, it isnt DEEPER, it is more accurate. Which means it never misses a note. That is what the M&K design is known for. Push pull, thats what its known for. For it's accuracy. I am aware that the 650 beats my subwoofer in volume by 2 DB. But is hardly the equivelant. the M&K, which I have ran FR drops on, goes down to a good 18hz. The 650 only goes down to what....28????????? We also have gone into the fact that I know that what I have is overpriced, and can be easily beaten by things. Hello, Doc, Bass Head. Which you seem to be, you want the low FR, and the room moving SPL. Now, lets recap, how ACCURACTE is the SVS? I have yet to hear this side...all I have read about them is it cracks plaster. I plan to get a SVS, but sadly I dont have 600 bucks...heck...I dont even have 80 dollars! Now if yall would drop my M&K, and let it get out of my mind, all I wanted to prove starting this thread is the fact this M&K bottum driver has blown. Yet you guys seem to turn it into, your M&K sucks, its a money hole, lets bash M&K. It gets rather annoying after a while. I wonder if this dude complains about his M&K MX-90s...http://clubpolk.polkaudio.com/showca...?userid=22276. He sure seems to have a setup that could kill yours! Now, since I have done my time in the spotlight, I shall remove myself from it. Goodbye.
    Last edited by VR3; 05-24-2003 at 06:16 PM.
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  10. #40

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    Nice but can you say overkill!! go on say it :)
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2


    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC

  11. #41

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    Originally posted by faster100
    Nice but can you say overkill!! go on say it :)
    No, this is overkill.

    http://members.tripod.com/~BassPig/

  12. #42

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    agreed!! ive seen this before
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2


    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC

  13. #43

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    Sid:

    Accuracy is a function of how faithfully the output of a device matches the input signal.

    "Not missing a note" doesn't cut it.

    Frequency response, harmonic distortion, intermodulation distortion, transient response, group delay, and a linear FR/SPL relationship are what define accuracy.

    You ask how accurate the SVS is? It displays superior numbers in these measureable performance categories, and can therefore be described as more accurate.

    Playing loud isn't the whole picture, not by a green mile. The real issue is how loud can a sub play while still maintaining a flat FR and low distortion, and good transient characteristics.

    That is why Chart 2 is so revealing. Generating clean volume at 50-60 Hz is easy. Generating clean volume at 25 Hz is a real challenge. So a great test of any sub is how loud it can play at 25 Hz before distortion reaches 10%. Remember, distortion is one of the key parameters that defines accuracy. The antithesis of accuracy IS distortion.

    So the MX-125 is only able to play at a very low volume at the deepest frequencies before it distorts and accuracy begins to suffer.

    If accuracy is really that important to you, I suggest that you limit the maximum volume of your system to around 90 dB for bass peaks, because that's about all the MX-90 can cleanly deliver.

    Doc
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
    Director - Technology and Customer Relations
    Specialty Technologies
    SVSound

  14. #44

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    Doc, at age 14...what subwoofer...el forget subwoofer....stereo did you own?
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  15. #45

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    Stereo, WTH, can you say clock radio? ;)

    Mono, all day lol

  16. #46
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    Sid,

    Glad you’re still around this thread. I just get the feeling that there’s some more troubleshooting to be done on your sub. I thought casey’s earlier comments had a lot of merit to them.

    If you can get a hold of a schematic for your sub, might help. I would think that it would have a mono plate amp in it powering both drivers, but if it has a 2 ch amp, then you may have lost one channel of amp and not the driver. Unfortunately I cannot think of a test off-hand short of swapping driver leads to check this.

    Perhaps there are more tests on the drivers that can be performed. Ohmmeter readings of the two drivers could yield comparative insight. This would best be done with them both wired to and disconnected from the amp.

    Anyway I’m reaching here a bit. Hopefully others can chime in with some tests that will both help define the problem and be simpler.

    BTW, when Doc was your age subwoofers hadn't been invented yet... :D.. then again, when I was your age stereo hadn't been invented yet...
    More later,
    Tour...
    Vox Copuli
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  17. #47
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    Mx,

    You missed Docs point. This is not about age or being able to afford a sub, its about the nature of subs in general, in accordance to what you already own.

    Easy there fido.

  18. #48

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    i know what he is saying, ive discussed it before. Im not wasting my time....
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  19. #49

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    I bet it's missing a few notes now.:p
    Make it Funky! :)

  20. #50

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    O WOW!!!!!!

    I can't beleive a actually took the time to read over this thead.

    SID,
    save your money and buy a new driver.Down the road you want an SVS???Have you heard an SVS??
    Dan
    My personal quest is to save to world of bad audio, one thread at a time.

  21. #51

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    nope, all this raving gotta have one!! lol
    Last edited by VR3; 05-25-2003 at 11:08 AM.
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  22. #52

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    Over 10 years ago I walked into an audio store and they had a really nice sounding sub going. I looked all over and couldn't find it. Eventually a salesman showed me where it was. It gave no clue as to where it was and I really enjoyed the sound. It was an M&K. Seemed aweful expensive at the time but seemed to deliver something I really liked. Unfortunatly I have not heard or seen one since but it's funny, I still remember the experience.
    madmax

  23. #53

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    M&K made the only real subwoofer 15 years ago, thats what my Dad has told me. He said that not many companies made them, and M&K launched the idustry into REAL subwoofer. They may not have been the first to make one, but they were the first to make a good one I suppose. They do sound good, the only reason they are not loud, is plainly on the fact they are a sealed enclosure. Even Doc should know a sealed enclosure is more accurate than a ported. This is what I have picked up on the boards anyways. M&K's do sound good. Their just not bone crushing...
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  24. #54

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    Talking

    actually we did kinda pay for entertainment like this......didn't we all buy polk speakers to get into this forum? haha. kidding

    i am also the proud owner of an M&K sub and im sad to say after 15 years the foam surrounds are gone. oh well i dont remember what it sounded like when all was well with or, or how much it cost but hey whatever.

    and im definetely no Dr. Spec and know basically nothing about subwoofers but shouldnt all subs sound different based on what room they are in? ya know room gain and all that wonderful stuff. so how can anyone say someone elses sub shouldnt sound good based on specs? maybe it sounds good in their room and not yours. sorry if im wrong and made a complete fool of myself but i tried and it was fun. :D have a nice night :)

  25. #55

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    you sir are correct
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  26. #56

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    Then why have specs then?? **** screw it lets make it a diy speaker world, screw specs and all that and just wing it, after all every room is different right?? so why make specs from a office and expect it to work in the real world. :)
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2


    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC

  27. #57

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    Originally posted by faster100
    Then why have specs then?? **** screw it lets make it a diy speaker world, screw specs and all that and just wing it, after all every room is different right?? so why make specs from a office and expect it to work in the real world. :)
    Faster, is im not mistaken - the specs inside an average joe's room is different than a clean, nothing in it room. There are couches, people, tv, furniture, pictures......etc.
    www.Vr3Mods.com ///// www.Version3Audio.com

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  28. #58

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    Thumbs up

    Yes. Let's make it a DIY speaker world, then amp, then CD transport, then DAC, etc.
    Make it Funky! :)

  29. #59

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    Originally posted by faster100
    Then why have specs then?? **** screw it lets make it a diy speaker world, screw specs and all that and just wing it, after all every room is different right?? so why make specs from a office and expect it to work in the real world. :)
    I know you are kidding here but your statement is absolutely correct!
    madmax

  30. #60

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    Specs mean s***
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