Two RT55 for 4 ohm?

edmove
edmove Posts: 5
edited March 2011 in Basic Hookup/Wiring Questions
I have had 2 sets of RT55 for about 10 years. Still really happy with them. Recently I have built a home theater and only use one set of the RT55s in my system. I have three questions I was hoping to get advice on.

First Question: I have never bi-amped the RT55. But I am using dedicated amps for the first time. When bi-amping them what is the recommended watts for the high and then the mids? Is is the same? I read you need less on the highs but never verified that.

Second Question: With my extra pair of TR55s I could take those and run two dedicated speakers for each R and L channels. Essentially having 4 speakers. Two R speakers and two L speakers. If I did this could I wire them to a 4 ohm load? I'd do this with a single channel for each set of speakers. My amp can handle it and would produce enough power.

Third Question: If I remove the binding posts, like I would for bi-amping, could I just wire each speaker to a 4 ohm load with one channel? In this case I would only use one speaker for L and one for right. I would still have an extra unsed set of RT55's.

thanks in advance.
Post edited by edmove on
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  • ben62670
    ben62670 Posts: 15,969
    edited March 2011
    What amp do you have?

    Edit: Welcome to Club Polk
    Ben
    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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  • nguyendot
    nguyendot Posts: 3,594
    edited March 2011
    Don't use two sets stacked, you'll have tweeters out of alignment and the sound image won't be coherent.
    Main Surround -
    Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub

    Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250

    Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD
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  • edmove
    edmove Posts: 5
    edited March 2011
    ben62670 wrote: »
    What amp do you have?

    Edit: Welcome to Club Polk
    Ben
    Nothing too special. Crown XLS 202Ds. Stereo, 4 ohms (per ch.) @ 300w or Stereo, 8 ohms (per ch.) at 200w
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  • edmove
    edmove Posts: 5
    edited March 2011
    nguyendot wrote: »
    Don't use two sets stacked, you'll have tweeters out of alignment and the sound image won't be coherent.

    I have been thinking about this some. If what I wanted to do worked, I could have new boxes built. Not sure if you are familiar with Elemental Design but they are only 30 minutes from me. They could create just about any box to spec. that I would need for a long run solution. CNC'd precision cut.

    By the way my room is a dedicated HT. 90% movie and 10% music.
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  • ben62670
    ben62670 Posts: 15,969
    edited March 2011
    Sell your pro amp and get a home 5 channel amp. Use the other speakers as surrounds. Get a center channel speaker and a sub.
    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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  • tonyb
    tonyb Posts: 32,988
    edited March 2011
    ben62670 wrote: »
    Sell your pro amp and get a home 5 channel amp. Use the other speakers as surrounds. Get a center channel speaker and a sub.

    Ditto that.....biamping will be a waste along with stacking them,but your of coarse free to knock your socks off anyway you see fit.
    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
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • edmove
    edmove Posts: 5
    edited March 2011
    ben62670 wrote: »
    Sell your pro amp and get a home 5 channel amp. Use the other speakers as surrounds. Get a center channel speaker and a sub.

    I have a full 7.1 system. I don't need any other speakers.
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  • edmove
    edmove Posts: 5
    edited March 2011
    tonyb wrote: »
    Ditto that.....biamping will be a waste along with stacking them,but your of coarse free to knock your socks off anyway you see fit.

    Why is biamping a waste? That is the entire reason that Polks (and other speakers) have the dual posts. Do you think it is because you can bi-wire them? If that was the case then it would be done inside the speaker not outside via the post binding or wire.
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