Center image smearing on 2.3TL's...

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Comments

  • F1nut
    F1nut Posts: 50,755
    edited May 2010
    nooshinjohn wrote: »
    Am I crazy for thinking the harshess has been deminished from the SL3000's by removing the poly's???

    Yes, you are crazy. If anything, the tweeters should be brighter because you just removed a .5 ohm of resistance from the circuit.

    Just taking a cap and putting it on MM won't tell you anything.

    My Fluke 177 measures capacitance as well.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Face
    Face Posts: 14,340
    edited May 2010
    Jesse, it's possible that the poly was adding distortion, hence why it now sounds less harsh.
    "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
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  • F1nut
    F1nut Posts: 50,755
    edited May 2010
    Face wrote: »
    Jesse, it's possible that the poly was adding distortion, hence why it now sounds less harsh.

    You've got a point there, Mike.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • nooshinjohn
    nooshinjohn Posts: 25,464
    edited May 2010
    Face wrote: »
    Jesse, it's possible that the poly was adding distortion, hence why it now sounds less harsh.
    Thanks for that Face... Sanity intact!:D:p
    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
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  • hangon
    hangon Posts: 228
    edited May 2010
    I bi-amped mine just yesterday, what a huge improvement in clarity.
    I was hearing before the bi amp the tweeters were dimming when the bass
    was hitting shrinking/changing the sound stage. I am using them in a theater set up with out the interconnect cable connected, my opinion it sounds better with out it connected.
    I am saving coin $$ for the crossovers upgrade, this is next on my list.
    HT Theater

    SRS-SDA 2.3tl RDO's
    Custom Center made out of a RTA15tl
    Pioneer Elite SC-25 Receiver
    CineNova Grande 5 channel Amp
    Klipsch KA-1000-THX Sub Amp
    (2)Klipsch KW-120-THX Subs

    Basement System

    SRS-SDA 1.2 upgraded Xover
    Pioneer Elite SC-25 Receiver
    ADCOM GFA 5500
    ADCOM GFA 5503
    Yahama P7000S Pro Audio Amp
    dbx 120x-ds Sub-harmonic Synthesizer
    2-JBL 4645C Subs
    1-Paradigm SW2200 Sub
    Klipsch Reference in wall's
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  • Face
    Face Posts: 14,340
    edited May 2010
    nooshinjohn wrote: »
    Thanks for that Face... Sanity intact!:D:p

    I wouldn't go that far! :D
    "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
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  • Toolfan66
    Toolfan66 Posts: 17,337
    edited May 2010
    hangon wrote: »
    I bi-amped mine just yesterday, what a huge improvement in clarity.
    I was hearing before the bi amp the tweeters were dimming when the bass
    was hitting shrinking/changing the sound stage. I am using them in a theater set up with out the interconnect cable connected, my opinion it sounds better with out it connected.
    I am saving coin $$ for the crossovers upgrade, this is next on my list.


    Is it just me? Why own a set of SDA's if your not going to use them as SDA's?*
    Polk Audio SDA 2.3tl Fully Hot Rodded. 😎

    SVS SB16 X2

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    MIT Shotgun 3 cables throughout / Except TT, and PC’s
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  • Schurkey
    Schurkey Posts: 2,104
    edited May 2010
    hangon wrote: »
    I am using them in a theater set up with out the interconnect cable connected, my opinion it sounds better with out it connected.
    CHECK THE RESISTANCE between your - terminals on the amp.

    I had my SDA cable disconnected for a long time--until I figured out that my amp was only "semi" common-ground; there was ~20 ohms resistance between the negative posts.

    A jumper wire between the - posts made a GIGANTIC improvement in sound quality when the SDA cable was in place!
    TOOLFORLIFEFAN wrote: »
    Is it just me? Why own a set of SDA's if your not going to use them as SDA's?*
    'Cause they still sound good even without the SDA effect. Good bass, good midrange. Not to thrilled with the treble until I re-capped, RDOd, and added a ribbon supertweeter, though.
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  • hangon
    hangon Posts: 228
    edited May 2010
    Schurkey wrote: »
    CHECK THE RESISTANCE between your - terminals on the amp.

    I had my SDA cable disconnected for a long time--until I figured out that my amp was only "semi" common-ground; there was ~20 ohms resistance between the negative posts.

    A jumper wire between the - posts made a GIGANTIC improvement in sound quality when the SDA cable was in place!


    'Cause they still sound good even without the SDA effect. Good bass, good midrange. Not to thrilled with the treble until I re-capped, RDOd, and added a ribbon supertweeter, though.

    I just checked my amp, I am getting a reading of (1) ohm's to chassis ground and (0) ohm's between negative posts.
    The manufacture said that it is a non-common ground amplifier, now I am confused.
    I want to try the interconnect cable but, I am a little Leary.
    HT Theater

    SRS-SDA 2.3tl RDO's
    Custom Center made out of a RTA15tl
    Pioneer Elite SC-25 Receiver
    CineNova Grande 5 channel Amp
    Klipsch KA-1000-THX Sub Amp
    (2)Klipsch KW-120-THX Subs

    Basement System

    SRS-SDA 1.2 upgraded Xover
    Pioneer Elite SC-25 Receiver
    ADCOM GFA 5500
    ADCOM GFA 5503
    Yahama P7000S Pro Audio Amp
    dbx 120x-ds Sub-harmonic Synthesizer
    2-JBL 4645C Subs
    1-Paradigm SW2200 Sub
    Klipsch Reference in wall's
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  • F1nut
    F1nut Posts: 50,755
    edited May 2010
    hangon wrote: »
    I bi-amped mine just yesterday, what a huge improvement in clarity.
    I was hearing before the bi amp the tweeters were dimming when the bass
    was hitting shrinking/changing the sound stage. I am using them in a theater set up with out the interconnect cable connected, my opinion it sounds better with out it connected.
    I am saving coin $$ for the crossovers upgrade, this is next on my list.

    I was going to say that you definitely have something wrong with your speakers until I saw you post,
    The manufacture said that it is a non-common ground amplifier

    You cannot use a non-common ground amp with your SDA's unless you use the AI-1 SDA interconnect cable or you are able to strap the negative outputs together.

    It's no wonder they didn't sound right with the cable connected. It's also a wonder you didn't damage the speakers and/or the amp.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • F1nut
    F1nut Posts: 50,755
    edited May 2010
    Face wrote: »
    I wouldn't go that far! :D

    You've got another point there, Mike.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • ben62670
    ben62670 Posts: 15,969
    edited May 2010
    With only 1 ohm resistance you should be able to strap the grounds on the amp.
    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
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  • FTGV
    FTGV Posts: 3,649
    edited May 2010
    I assume it's the CineNova your speaking of?It appears to have 5 completely separate modules so technically the grounds for each channel are separate,which is likely what the company was meaning non common ground.However your meter readings and the fact that the company says it is stable into a 2 ohm load indictes it does not utilize a bridged/balanced output stage.Therefore the grounds of all channels will be at power supply ground so strapping the negative binding posts should be permissable.
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  • hangon
    hangon Posts: 228
    edited May 2010
    Please explain the best method of strapping the Grounds?
    FTGV
    I assume it's the CineNova your speaking of?
    Yes this is the amp I am using.
    HT Theater

    SRS-SDA 2.3tl RDO's
    Custom Center made out of a RTA15tl
    Pioneer Elite SC-25 Receiver
    CineNova Grande 5 channel Amp
    Klipsch KA-1000-THX Sub Amp
    (2)Klipsch KW-120-THX Subs

    Basement System

    SRS-SDA 1.2 upgraded Xover
    Pioneer Elite SC-25 Receiver
    ADCOM GFA 5500
    ADCOM GFA 5503
    Yahama P7000S Pro Audio Amp
    dbx 120x-ds Sub-harmonic Synthesizer
    2-JBL 4645C Subs
    1-Paradigm SW2200 Sub
    Klipsch Reference in wall's
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  • Schurkey
    Schurkey Posts: 2,104
    edited May 2010
    hangon wrote: »
    (0) ohm's between negative posts
    hangon wrote: »
    Please explain the best method of strapping the Grounds?
    You have "0" ohms between the negative posts already. Strapping is pointless.
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  • hangon
    hangon Posts: 228
    edited May 2010
    Connected the interconnect tonight for the first time, and what a huge difference in sound quality. I was so afraid to hook it up because of the incorrect information from CineNova.
    This also cured my smearing issue, thanks.
    HT Theater

    SRS-SDA 2.3tl RDO's
    Custom Center made out of a RTA15tl
    Pioneer Elite SC-25 Receiver
    CineNova Grande 5 channel Amp
    Klipsch KA-1000-THX Sub Amp
    (2)Klipsch KW-120-THX Subs

    Basement System

    SRS-SDA 1.2 upgraded Xover
    Pioneer Elite SC-25 Receiver
    ADCOM GFA 5500
    ADCOM GFA 5503
    Yahama P7000S Pro Audio Amp
    dbx 120x-ds Sub-harmonic Synthesizer
    2-JBL 4645C Subs
    1-Paradigm SW2200 Sub
    Klipsch Reference in wall's
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