Bridging NAD 2155 for sub hook up HELP PLEASE

Options
schwerhaiv
schwerhaiv Posts: 72
edited March 2006 in Basic Hookup/Wiring Questions
Hello,
I have an old NAD 2155, which I wanted to bridge, use at 4 ohms, and drive a SVS 20-39 sub. The amp has an A/B selector and switches for Bridging and for 4 versus 8 ohm. I am just not sure about the connections and don't want to fry the amp, which I otherwise have been very satisfied with for many years. PLEASE HELP.
-SchwerhaIV
Post edited by schwerhaiv on
· Share on FacebookShare on Twitter

Comments

  • hoosier21
    hoosier21 Posts: 4,413
    edited March 2006
    I don't think that amp is rated for 4 ohms when bridged. I had a 2200 that is from that same line, and it was not rated for 4 ohms when bridged. You might give NAD a call and make sure.

    Russ
    Dodd - Battery Preamp
    Monarchy Audio SE100 Delux - mono power amps
    Sony DVP-NS999ES - SACD player
    ADS 1230 - Polk SDA 2B
    DIY Stereo Subwoofer towers w/(4) 12 drivers each
    Crown K1 - Subwoofer amp
    Outlaw ICBM - crossover
    Beringher BFD - sub eq

    Where is the remote? Where is the $%#$% remote!

    "I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..."
    · Share on FacebookShare on Twitter
  • seo
    seo Posts: 305
    edited March 2006
    I think Russ is right. Most of the NAD amps are recommended for 8 ohms only when bridged.
    Signature goes here
    · Share on FacebookShare on Twitter
  • shack
    shack Posts: 11,154
    edited March 2006
    This old NAD brochure doesn't say anything about the bridged ohm rating but all of the other NAD amps I've owned say to only drive 8 ohm speakers when bridged.

    http://207.228.230.231/info/NAD_2155.pdf
    "Just because you’re offended doesn’t mean you’re right." - Ricky Gervais

    "For those who believe, no proof is necessary. For those who don't believe, no proof is possible." - Stuart Chase

    "Consistency requires you to be as ignorant today as you were a year ago." - Bernard Berenson
    · Share on FacebookShare on Twitter
  • flexthis
    flexthis Posts: 4
    edited March 2006
    I got your PM, the system won't let me PM you back. I love my NAD 2200. Lot's of power. I have had the police at my door telling me to turn it down. The cute blonde cop said it was impressive how clear and loud it was at the street with my doors and windows closed. Unless you are deaf I don't see a problem getting enough power to run your subs. I am running mine to a 15" Dayton that came from Partsexpress. Shoot me an eamil if you want more info....tomraman@yahoo.com
    My Pimp Rig -
    Pioneer Elite Receiver
    NAD 2200 Sub Amp 1.6kw bridged IHF :eek:
    MB Quart Q One Front
    MB Quart CTR Center
    Infinty/Stillwater Hybrid Rear
    Stillwater C12 Isobaric Sub
    Sony VCR,MD,LD players
    Pioneer DVD
    Audiocontrol C101 EQ/analyser
    PC
    · Share on FacebookShare on Twitter
  • reeltrouble1
    reeltrouble1 Posts: 9,312
    edited March 2006
    If you do it you will risk blowing the amp and damaging your speaker. Its a poor application when bridged. The amp will see 2 ohm loads with big bass hits, a recipe for disaster. If you use the soft clip its going to distort and sound like crap.

    RT1
    · Share on FacebookShare on Twitter
  • shack
    shack Posts: 11,154
    edited March 2006
    Big Ted...The NAD guru...knows what he is talking about! I wouldn't bridge that amp with with a sub. But hey...it's your gear...do what you want.
    "Just because you’re offended doesn’t mean you’re right." - Ricky Gervais

    "For those who believe, no proof is necessary. For those who don't believe, no proof is possible." - Stuart Chase

    "Consistency requires you to be as ignorant today as you were a year ago." - Bernard Berenson
    · Share on FacebookShare on Twitter
  • reeltrouble1
    reeltrouble1 Posts: 9,312
    edited March 2006
    everyone should have a least ONE big NAD, hopefully two!!!

    RT1
    · Share on FacebookShare on Twitter
  • ohskigod
    ohskigod Posts: 6,501
    edited March 2006
    dude, just use one channel, cant see that being a power shortage with that SVS. bridging aint worth it.
    Living Room 2 Channel -
    Wiim Ultra. Jolida CD player. Fiio k11 R2R DAC, XTZ as300 Edge amp. Focal Cobalt 826 towers,

    Upstairs 2 Channel Rig -
    Audiophonics AB310 preamp, DIY1200as2 Icepower Amp, Wiim pro streamer and Topping E70 Velvet DAC, California Audio Labs DX1 CD player, Polk LSi9 with modified crossovers.

    Studio Rig - Scarlett 18i20(Gen3) DAW, Schitt Saga 2 preamp, Topping a90 headphone amp, Mac Mini, Audiophonics Hypex NC252m amp, Polk r200's
    · Share on FacebookShare on Twitter