Bridged amp question, please help!

lsiwill
lsiwill Posts: 23
edited March 2010 in Troubleshooting
I'm still pretty new to home audio in terms of higher end stereos and amps and wiring. I understand the basics of how everything works, but here is my question. I have my Carver amps bridged one each to my LSi15s. Each amp has a left and right channel level meter on it. Since the amps are bridged there is only one channel going through each amp.(signal coming from my carver preamplifier). So if I have my understanding of the wiring correct up to this point, shouldn't both meters on each amp move in concert? My right channel amps meters are not moving together. What's my problem and how do I fix it? Please help, I don't want to ruin my beautiful LSi15's!
Onkyo TX-SR506
Carver Model C-1 Pre amp
Carver TFM-15CB x2
Sansui CD-190
Playstation 3
LSi 15's
Velodyne VRP-10
Bose Acoustimass 15
LG 50" Plasma
Post edited by lsiwill on
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Comments

  • F1nut
    F1nut Posts: 50,554
    edited March 2010
    I don't believe those amps are rated to drive 4 ohm loads when bridged.
    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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  • thuffman03
    thuffman03 Posts: 1,325
    edited March 2010
    I would not bridge the TFM-15cb into a 4 ohm load. You should biamp them into your LSI's.
    Sunfire TGP, Sunfire Cinema Grand, Sunfire 300~2 (2), Sunfire True Sub (2),Carver ALS Platinum, Carver AL III, TFM-55, C-19, C-9, TX-8, SDA-490t, SDA-390t
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  • domflane
    domflane Posts: 653
    edited March 2010
    For some reason, biamping them never crossed my mind. That will be and easy fix and sould wake the LSi's up even more. Only bad part is now you need 2 pairs of cables. Better look into a better CD player too, youre not doing your speakers any justice with that old Sansui.
    Home Theater
    RTiA5 - CSiA6 - FXiA6 - PSW650 - Pioneer Elite SC-55 - Carver AV-505 - Sony 46" 120Hz - Monster HP 2400 - Xbox 360 - Playstation 3
    2 Channel
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  • tonyb
    tonyb Posts: 32,962
    edited March 2010
    F1nut wrote: »
    I don't believe those amps are rated to drive 4 ohm loads when bridged.

    Good point and one over looked many a times.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
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  • lsiwill
    lsiwill Posts: 23
    edited March 2010
    Thanks for the input guys. New cables are already on the agenda, I'll just need to buy more it seems. I hadn't really thought about a new cd player. But I know I could definitly do with a better one. So maybe that will have to be the next big purchase!
    Onkyo TX-SR506
    Carver Model C-1 Pre amp
    Carver TFM-15CB x2
    Sansui CD-190
    Playstation 3
    LSi 15's
    Velodyne VRP-10
    Bose Acoustimass 15
    LG 50" Plasma
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  • lsiwill
    lsiwill Posts: 23
    edited March 2010
    F1nut wrote: »
    I don't believe those amps are rated to drive 4 ohm loads when bridged.

    So are you saying they are 4 ohm stable when they are not bridged? I believe they are, but I could be wrong.
    Onkyo TX-SR506
    Carver Model C-1 Pre amp
    Carver TFM-15CB x2
    Sansui CD-190
    Playstation 3
    LSi 15's
    Velodyne VRP-10
    Bose Acoustimass 15
    LG 50" Plasma
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  • TNRabbit
    TNRabbit Posts: 2,168
    edited March 2010
    lsiwill wrote: »
    So are you saying they are 4 ohm stable when they are not bridged? I believe they are, but I could be wrong.

    Yes, they are 4 ohm stable when not bridged.
    TNRabbit
    NO Polk Audio Equipment :eek:
    Sunfire TG-IV
    Ashly 1001 Active Crossover
    Rane PEQ-15 Parametric Equalizers x 2
    Sunfire Cinema Grand Signature Seven
    Carver AL-III Speakers
    Klipsch RT-12d Subwoofer
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  • polkie4life
    polkie4life Posts: 231
    edited March 2010
    When an amplifier is bridged does the impedance not halve? The amp will be seeing a 2ohm load, which i don't think many amps will do...
    In terms of audio, i truly feel sorry for the visually impaired. How can they know what they like if they cant read google?


    http://www.polkaudio.com/forums/showcase/view.php?userid=86838
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