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Thread: is Marantz 7007 enough for polk rti a9's biamped?

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    gajenn is offline Audioholic Intern gajenn has very reliable input
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    Default is Marantz 7007 enough for polk rti a9's biamped?

    I'm returning the b&w 684 and other b&w spkrs that make up the 5 system set, just not wowed by them..upgrading to polk rti surround system with rti a9's as fronts. if i bi amp them with the Marantz 7007 will that be enough power or will i need to pick up the emotiva xpa 2?

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    Should be fine. Why are you moving to Polks? Have you tried Salks yet?
    Fronts:Madisound RB Kits Rears and Sides: Kef 2001.2, Subwoofer: TC Tiger-1000
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    HT: Emotiva UMC-200, Emotiva XPA-3, 3X GR Research A/V-2s, GR A/V-1s, Epik Empire, Oppo BDP-83SE, URC R-50, APC-H10, Panamax 5100, PS3 Slim120G(500G) Bluejeans Cable
    System Two: Marantz SR-8300, GR Research A/V-2s, Sony SCD-222ES SACD, Panasonic BD-65, PS3 60G (250G), My HT


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    gajenn is offline Audioholic Intern gajenn has very reliable input
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    I haven't tried Salks or a bunch of others as its not so easy to find them, and I wanted to try these polks for awhile. My last HT system had the KEF Q900 q600 q800,which was quite nice but sold them prior to moving. So try bi amping them first,then maybe if not happy get the xpa 2? I was very tempted to go with KEF's new R series but cost kept me from goin that way.

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    Are you running out of power now? Meaning, how do you know what "enough" is? If distortion is not currently an issue, an amp isn't going to benefit you as more power is mainly a benefit when lack of it is becoming an issue. Biamping off a receiver isn't likely to make a huge difference either, and at the point where you need a significant step up in power, just getting an amp with enough power is the proper way to go about it.
    HT: Emotiva UMC-200, Emotiva XPA-3, 3X GR Research A/V-2s, GR A/V-1s, Epik Empire, Oppo BDP-83SE, URC R-50, APC-H10, Panamax 5100, PS3 Slim120G(500G) Bluejeans Cable
    System Two: Marantz SR-8300, GR Research A/V-2s, Sony SCD-222ES SACD, Panasonic BD-65, PS3 60G (250G), My HT


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    PENG is offline Audioholic Spartan PENG should be listened to
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    Quote Originally Posted by gajenn View Post
    I'm returning the b&w 684 and other b&w spkrs that make up the 5 system set, just not wowed by them..upgrading to polk rti surround system with rti a9's as fronts. if i bi amp them with the Marantz 7007 will that be enough power or will i need to pick up the emotiva xpa 2?
    I would pick up the xpa 2.

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    peng that seems likely down the road...ill be getting the a9's the end of the week, so a bit of breakin period,then seeing how satisfied ill be with them biamped..and then more than likely from what i've heard and you folks have said here, the xpa 2..the powersound sub i got does the job on the lowend and the oppo 103 is sweet with the panny 65gt50..just speakers to get right at this point.

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    Quote Originally Posted by gajenn View Post
    I'm returning the b&w 684 and other b&w spkrs that make up the 5 system set, just not wowed by them..upgrading to polk rti surround system with rti a9's as fronts. if i bi amp them with the Marantz 7007 will that be enough power or will i need to pick up the emotiva xpa 2?
    I think you will be changing speakers again pretty fast. I would say you are downgrading.

    When those three bass drivers kick in below 120Hz the impedance hits the basement and with highly adverse phase angles to boot.

    A passive crossover at 120 Hz is never a good idea. The speakers will still need a sub as the speaker is 3db down at 30 Hz. We have had lost of reports on these forums of these speakers being bass shy. Even if you set the crossover to the sub at 60 Hz you have crossovers at 60 and 120 Hz which is only an octave apart. This makes for very difficult integration as there will be bandpass gain and a peak 90 Hz which will be hard to deal with.

    The biamping will gain you nothing as all the power will be on the LF amp and not enough on the HF amp to raise spl even 1 db. Even if it could which it won't both amps come off the same power supply.

    If you want to upgrade, you need to take a different road.

    I have never been a huge enthusiast of the B & W 600 range, but they are far from terrible speakers.

    For the money you are about to spend you can do much better.
    Last edited by TLS Guy; 02-25-2013 at 04:33 PM.
    Marantz DV 9600 Oppo BD-83 Marantz AV 8003 Quad current dumping amps X 7 Direct TV HD 20 HD DVR Carter audio workstation RME Fireface 800 Fujitsu 50XHA40 Front left and right Carter dual transmission line studio monitors MK II. Center Carter coaxial transmission line center speaker Rear Carter NFM-1s Center backs Carter dual transmission line studio monitors MK I. My system: - http://mdcarter.smugmug.com/gallery/...27077317_Pufg7

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    I think ordering the Salks is worth the risk. We are talking a different level product than anything you've probably heard. I think Polk's glory days have passed them by and so should you.
    Fronts:Madisound RB Kits Rears and Sides: Kef 2001.2, Subwoofer: TC Tiger-1000
    Receiver:Onkyo NR-708 Amp: Behringer EP4000 Players: Panasonic BDP-60, Onkyo DX-C390 Projector: Epson 8350 Screen: FAVI PD-HD-92

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    That's like trying to get decent sound in a public lavatory.-TLS Guy

    Heck, if you've got the cash, go the NSA supercomputer route and use Fluorinert- Adam

    A shovel of dirt can stop a flood. -Westom

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    I was looking to keep cost of 5 speakers about 2k....polks seemed a good shot but I haven't heard them. the 600 series b&w aren't bad, just have a muddled mid range and not very detailed treble, but not "bad"...so ill give the polks a shot,and maybe sell them and try something else if not happy.

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