MIT S3 impedance setting

tcrossma
tcrossma Posts: 1,301
edited December 2009 in 2 Channel Audio
I have a new set of S3 Pro IC's (thanks Solidsqual!) and I have a question about the impedance setting for those that know these cables. I'm using them between my CD player and preamp.

The settings on the cable are Low (5-50kohms), Mid (40-100kohms), and High (90kohms and up).

My preamp has an input sensitivity of 94kohms.

So, should I use the Mid or High setting on the cables?
Speakers: Polk LSi15
Pre: Adcom GFP-750 with HT Bypass
Amp: Pass Labs X-150
CD/DVD Player: Classe CDP-10
Interconnects: MIT Shortgun S3 Pro XLR
Speaker cables: MIT MH-750 bi-wire
TT:Micro Seiki DD-35
Cartridge:Denon DL-160
Phono Pre:PS Audio GCPH
Post edited by tcrossma on

Comments

  • kawizx9r
    kawizx9r Posts: 5,150
    edited December 2009
    I was reading about that when I borrowed Mark's S3's and it just stated go with what works best for you. In my case, it was set on high.
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  • madmax
    madmax Posts: 12,434
    edited December 2009
    Flip between the extremes and see what the difference is. For me it was additional extension (both bass and treble) vs soundstage so try listening for those things. In the end I would change them around every few weeks and finally was able to select what I wanted for keeps.
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  • tcrossma
    tcrossma Posts: 1,301
    edited December 2009
    Thanks guys, I'll experiment.
    Speakers: Polk LSi15
    Pre: Adcom GFP-750 with HT Bypass
    Amp: Pass Labs X-150
    CD/DVD Player: Classe CDP-10
    Interconnects: MIT Shortgun S3 Pro XLR
    Speaker cables: MIT MH-750 bi-wire
    TT:Micro Seiki DD-35
    Cartridge:Denon DL-160
    Phono Pre:PS Audio GCPH
  • madmax
    madmax Posts: 12,434
    edited December 2009
    It gets really complicated when you add a bunch of IC's through multiple stages. It will drive you nuts if you think too much about it. Really though, give it some time on each setting, even if you hear something go away. It is a good balance you are looking for, not an obvious difference in sound.
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D
  • hearingimpared
    hearingimpared Posts: 21,137
    edited December 2009
    madmax wrote: »
    Flip between the extremes and see what the difference is. For me it was additional extension (both bass and treble) vs soundstage so try listening for those things. In the end I would change them around every few weeks and finally was able to select what I wanted for keeps.

    Same for me. However, I found the higher setting range that the target piece of gear's impedence fell into works and sounds the best.
  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited December 2009
    My MIT S3 IC shotguns are are as follows and I hope they are set correctly.

    to the Anthem pre-amp input impedance 40k ohms set to mid setting

    to the Belles 350a amp input impedance 50k ohms set to low setting

    Any suggestions??
  • hearingimpared
    hearingimpared Posts: 21,137
    edited December 2009
    How's it sound Drew. Did you try switching to the overlap range if there is one?
  • rubin
    rubin Posts: 565
    edited December 2009
    Maybe a dumb question, are you suppose to change the settings while listening to best hear what is best for you?
  • hearingimpared
    hearingimpared Posts: 21,137
    edited December 2009
    rubin wrote: »
    Maybe a dumb question, are you suppose to change the settings while listening to best hear what is best for you?

    I would have someone do the switching for you while you are listening.
  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited December 2009
    How's it sound Drew. Did you try switching to the overlap range if there is one?

    I am sure they sound awesome. The problem is that I need to get some good listening time in and that may not be for a few days :( I have let my system run for maybe 80 hours of burn-in so thats a good thing to accomplish.

    Overlap range??
  • tcrossma
    tcrossma Posts: 1,301
    edited December 2009
    rubin wrote: »
    Maybe a dumb question, are you suppose to change the settings while listening to best hear what is best for you?

    Not a dumb question at all. I was shutting off power to my pre before making the switch -- didn't want to risk it :) Glad to know it can be done on the fly.
    Speakers: Polk LSi15
    Pre: Adcom GFP-750 with HT Bypass
    Amp: Pass Labs X-150
    CD/DVD Player: Classe CDP-10
    Interconnects: MIT Shortgun S3 Pro XLR
    Speaker cables: MIT MH-750 bi-wire
    TT:Micro Seiki DD-35
    Cartridge:Denon DL-160
    Phono Pre:PS Audio GCPH
  • tcrossma
    tcrossma Posts: 1,301
    edited December 2009
    Same for me. However, I found the higher setting range that the target piece of gear's impedence fell into works and sounds the best.

    On my system it sounds best with the High setting, which seems to concur with your findings as well.
    Speakers: Polk LSi15
    Pre: Adcom GFP-750 with HT Bypass
    Amp: Pass Labs X-150
    CD/DVD Player: Classe CDP-10
    Interconnects: MIT Shortgun S3 Pro XLR
    Speaker cables: MIT MH-750 bi-wire
    TT:Micro Seiki DD-35
    Cartridge:Denon DL-160
    Phono Pre:PS Audio GCPH
  • hearingimpared
    hearingimpared Posts: 21,137
    edited December 2009
    NJPOLKER wrote: »
    I am sure they sound awesome. The problem is that I need to get some good listening time in and that may not be for a few days :( I have let my system run for maybe 80 hours of burn-in so thats a good thing to accomplish.

    Overlap range??

    I don't remember the exact ranges and am too lazy to go look so here's an example;

    Low - 10 ohms to 50k ohms

    Medium- 40K ohms to 100,000K ohms

    If the impedence of your target piece of gear is 45K ohms there is an overlap. You could use either the low or the med setting. I've found that the higher setting sounds best.
  • hearingimpared
    hearingimpared Posts: 21,137
    edited December 2009
    tcrossma wrote: »
    Not a dumb question at all. I was shutting off power to my pre before making the switch -- didn't want to risk it :) Glad to know it can be done on the fly.

    To give you an example, Jesse had a pair of S1s connected to a Consonance CDP and a Conrad Johnson Tube pre. He kept switching between the three settings on the fly and WOW the difference was dramatic. At the time I didn't know anything about MIT ICs and had no idea what he was doing I just know I heard a big difference between the settings.
  • F1nut
    F1nut Posts: 50,565
    edited December 2009
    NJPOLKER wrote: »
    My MIT S3 IC shotguns are are as follows and I hope they are set correctly.

    to the Anthem pre-amp input impedance 40k ohms set to mid setting

    to the Belles 350a amp input impedance 50k ohms set to low setting

    Any suggestions??

    Drew, I would set the pre amp cable to low and the amp cable to mid.
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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited December 2009
    Thanks guys.
    I will try those settings tomorrow, thanks.