SDA-1C imaging update

nooshinjohn
nooshinjohn Posts: 25,461
edited January 2009 in Vintage Speakers
welll i found the root cause of the trouble to be a poorly made shield connection. I corrected it and in doing so induced a far worse problem. I am running a Yamaha rx-v861 currently and what happens is the receiver goes into protect mode and shuts down when the i/c is made and volume is set to moderate levels. Without the i/c all is great. any ideas...:confused::confused:
The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

“When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
Post edited by nooshinjohn on
· Share on FacebookShare on Twitter

Comments

  • Face
    Face Posts: 14,340
    edited January 2009
    It appears your Yammy isn't common ground.

    Time to man up and get a real amp.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
    · Share on FacebookShare on Twitter
  • treitz3
    treitz3 Posts: 19,207
    edited January 2009
    I thought he had another issue as well. Here's a quote from another thread.
    nooshinjohn wrote: »
    I checked the speakers travel and hold times by pressing on the passive radiator and found that the right does not stay extended as long as left, and that neither speaker seems to hold the extended position very long... also there seems to be a metallic clanking sound from the left passive

    So, a bad driver and a possible leak in the right speaker cabinet combined with an incompatible [non common ground] amp? Yeah, that would definitely cause imaging issues.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
    · Share on FacebookShare on Twitter
  • nooshinjohn
    nooshinjohn Posts: 25,461
    edited January 2009
    the left passive radiator is not a problem any longer as this has been corrected as well. Imaging has also been solved and they sound great... just cannot turn them up very loud
    I thought Yamahas were all common grounding amps... is there a way to find out if it is or not?
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
    · Share on FacebookShare on Twitter
  • nooshinjohn
    nooshinjohn Posts: 25,461
    edited January 2009
    I have also replaced all the seals on the speakers with mortite
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
    · Share on FacebookShare on Twitter
  • treitz3
    treitz3 Posts: 19,207
    edited January 2009
    nooshinjohn wrote: »
    ...is there a way to find out if it is or not?
    There is an easy way to tell if any amp is a common ground amp. Take an ohm meter [or DVM] and measure the resistance between both negative speaker terminals. If it reads zero ohms, you have a common ground amp. If resistance is infinite or open, you do not have a common ground.

    The fact that all is well without the IC cable but the amp goes into protect mode when it is installed leads me to believe that your amp is NOT common ground.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
    · Share on FacebookShare on Twitter
  • strider
    strider Posts: 2,568
    edited January 2009
    nooshinjohn wrote: »
    the left passive radiator is not a problem any longer as this has been corrected as well. Imaging has also been solved and they sound great... just cannot turn them up very loud
    I thought Yamahas were all common grounding amps... is there a way to find out if it is or not?

    Got a multimeter?

    Set it to ohms, burn some incense, power down the amp, strike the fragile lotus position, jam a probe into each negative binding post on the back o' the amp. If it shows zero ohms, or any small value, it's common ground. If there's no common ground, it'll show open (display shows --- on mine).
    Wristwatch--->Crisco
    · Share on FacebookShare on Twitter
  • strider
    strider Posts: 2,568
    edited January 2009
    Drats, foiled again.

    My way's better, though.
    Wristwatch--->Crisco
    · Share on FacebookShare on Twitter
  • treitz3
    treitz3 Posts: 19,207
    edited January 2009
    One more thing to add. Sorry, I forgot. You can run the speaker all day long wothout the IC cable hooked up with no damage to anything. That said, you will be missing the SDA effect which is what makes an SDA, well an SDA. It is not recommended to run with the IC cable on a non-common ground amp due to the possibility of damage to both the speakers and the amp.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
    · Share on FacebookShare on Twitter
  • nooshinjohn
    nooshinjohn Posts: 25,461
    edited January 2009
    i get .6 when i test as you described...
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
    · Share on FacebookShare on Twitter
  • Face
    Face Posts: 14,340
    edited January 2009
    Now stick your tongue across the negative terminals and see what happens.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
    · Share on FacebookShare on Twitter
  • ben62670
    ben62670 Posts: 15,969
    edited January 2009
    OK you can turn it up withouth the SDA IC in place?
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
    · Share on FacebookShare on Twitter
  • nooshinjohn
    nooshinjohn Posts: 25,461
    edited January 2009
    :Dlol... Is it possible that having one of the speakers out of phase would cause instability in the receiver?
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
    · Share on FacebookShare on Twitter
  • ben62670
    ben62670 Posts: 15,969
    edited January 2009
    ben62670 wrote: »
    OK you can turn it up withouth the SDA IC in place?

    can you?

    Edit.
    Did you have a speaker wired wrong?
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
    · Share on FacebookShare on Twitter
  • Face
    Face Posts: 14,340
    edited January 2009
    nooshinjohn wrote: »
    :Dlol... Is it possible that having one of the speakers out of phase would cause instability in the receiver?

    With the SDA I/C in place, I believe so.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
    · Share on FacebookShare on Twitter
  • ben62670
    ben62670 Posts: 15,969
    edited January 2009
    It would be around a 1ohm load that way:eek: Even without the IC in place.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
    · Share on FacebookShare on Twitter
  • nooshinjohn
    nooshinjohn Posts: 25,461
    edited January 2009
    :D:D:D:D:D:D:D:D!!!!HEAVEN HAS BEEN FOUND!!!!:D:D:D:D:D:D:D

    The right channel was out of phase even though that nasty YPAO said it was good.... and i will need better power soon as i have a driver clipping on the right so i backed it down a bit and all is well...

    You guys ROCK!!! this forum ROCKS!!! and SDA just plain kicks f@#!*%$ AS!
    :D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
    · Share on FacebookShare on Twitter
  • ben62670
    ben62670 Posts: 15,969
    edited January 2009
    So are you say you are happy now:confused:




















    :D
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
    · Share on FacebookShare on Twitter
  • treitz3
    treitz3 Posts: 19,207
    edited January 2009
    Daggum, someone just found bliss. :cool:
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
    · Share on FacebookShare on Twitter
  • reeltrouble1
    reeltrouble1 Posts: 9,312
    edited January 2009
    strider wrote: »
    Got a multimeter?

    Set it to ohms, burn some incense, power down the amp, strike the fragile lotus position, jam a probe into each negative binding post on the back o' the amp. If it shows zero ohms, or any small value, it's common ground. If there's no common ground, it'll show open (display shows --- on mine).

    I especially like the part about jamming a probe into the post. Your on your way Ben.

    RT1
    · Share on FacebookShare on Twitter