SR6500 Bi-amp power rating

Sutho_
Sutho_ Posts: 26
edited February 2007 in Car Audio & Electronics
HI everyone,
I'm trying to track down some information on the sr6500's power rating when bi-amped. i understand that they are rated at 150wrms running passive, but does remain constant when bi-amped? I have spoken to someone in the polk technical department in Australia and have been told that it is 150wrms passive and 150 per-speaker bi-amped, which sounds far fetched to me.

I'm using a MTX-1004 which has served me very well over the years. Below are the specs:
RMS Power 12.5 VDC
2 Ohm Load 180 w x 4
4 Ohm Load 90 w x 4
Dynamic Power 14.4 VDC
2 Ohm Load 250 w x 4
4 Ohm Load 125 w x 4

I see that everyone recommends the polk C400.4, which makes sense. But at this point in time i am unable to upgrade my amplifiers.

So my real questions are:
When bi-amping the sr6500 does the amp now see a 2 ohm load?
What is the power ratings for the tweet/midbass when setup in bi-amp mode?
Post edited by Sutho_ on
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Comments

  • Toxis
    Toxis Posts: 5,116
    edited February 2007
    it'd be 4 ohms and rated at 150w/speaker. Have at it. 90w won't be to much just don't go stupid with the gain since that's how distortion happens.
    Never kick a fresh **** on a hot day.

    Home Setup: Sony VPL-VW85 Projo, 92" Stewart Firehawk, Pioneer Elite SC-65, PS3, RTi12 fronts, CSi5, FXi6 rears, RTi6 surround backs, RTi4 height, MFW-15 Subwoofer.

    Car Setup: OEM Radio, RF 360.2v2, Polk SR6500 quad amped off 4 Xtant 1.1 100w mono amps, Xtant 6.1 to run an eD 13av.2, all Stinger wiring and Raammat deadener.
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  • Sutho_
    Sutho_ Posts: 26
    edited February 2007
    Thanks for the quick reply!
    My deck is an eclipse cd8455 which has 8v preouts, the MTX1004 has a Maximum Input of 8Vrms. This means that gain will be be at it's minimum, as it is now. Sensible volume levels is an obvious necessity. But do you see an issue with the HU/amp/speaker combo in biamp mode?
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  • MacLeod
    MacLeod Posts: 14,358
    edited February 2007
    Bi-amp is the best way to run. It offers so much more flexibility in tuning.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • howie777
    howie777 Posts: 357
    edited February 2007
    I have the SR-6500's running off of a C400.4 (bi-amped) which was rated at 94 watts per channel at 14.4V if I remember correctly (tested, not advertised rating). I have seen no issues.

    Howie
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  • MacLeod
    MacLeod Posts: 14,358
    edited February 2007
    Its all in the level settings my brother!
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • Toxis
    Toxis Posts: 5,116
    edited February 2007
    howie, are you using the passive x-overs or the x-over built into the C400??
    Never kick a fresh **** on a hot day.

    Home Setup: Sony VPL-VW85 Projo, 92" Stewart Firehawk, Pioneer Elite SC-65, PS3, RTi12 fronts, CSi5, FXi6 rears, RTi6 surround backs, RTi4 height, MFW-15 Subwoofer.

    Car Setup: OEM Radio, RF 360.2v2, Polk SR6500 quad amped off 4 Xtant 1.1 100w mono amps, Xtant 6.1 to run an eD 13av.2, all Stinger wiring and Raammat deadener.
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  • Sutho_
    Sutho_ Posts: 26
    edited February 2007
    MacLeod: i totally, agree with you there, i'm returning passive 2-way after running a 3-way active setup. I just don't want to cause any damage to the speakers by over powering the tweeter. Wost case scenario I'll wait and get a c400.4.

    It might end up been a case of bi-amping and keeping the volume knob at a sensible level, as there is no room for adjusting gains with this setup.
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  • howie777
    howie777 Posts: 357
    edited February 2007
    I use both actually. On the tweeters, I turn off the active XO but on the mids I have the XO set to high pass at 50 HZ. On the other side of the amp I run the passive XO's the set came with. I feel much better with the passives in the line to keep me from doing something stupid.

    Howie
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