Adding Polk woofer and tweeter to RT8

garynorton
garynorton Posts: 2
edited August 2009 in DIY, Mods & Tweaks
Greetings:
I hope to add a 6 1/2 in. Polk woofer and 1 in. tweeter to my existing RT8 tower. First, I wish to know if it is possible? Second, I require instruction for the project. If someone can help, great. If someone can point me in the correct direction for information, that is also great. Thank you
Gary S. Norton
Post edited by garynorton on
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  • Face
    Face Posts: 14,340
    edited August 2009
    It's not as easy as you may think. You're probably better off selling them and buying something else.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • dpowell
    dpowell Posts: 3,081
    edited August 2009
    It seems that there have been a lot of great deals for speakers on Craigslist as of late, you might look for an upgrade there rather than taking the risk with modding your RT8's.
    ____________________________________________________________

    polkaudio Fully Modded SDA SRS 1.2TLs + Dreadnaught, LSiM706c, 4 X Polk Surrounds + 4 X ATMOS, SVS PB13 Ultra X 2, McIntosh C2300, Marantz AV7704, Bob Carver Crimson Beauty 350 Tube Mono Blocks, Carver Sunfire Signature Cinema Grande 400x5, ADCOM GFA 7807, Panasonic UB420, Sim Audio Moon 380D DAC, EPSON Pro Cinema 6050
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  • nguyendot
    nguyendot Posts: 3,594
    edited August 2009
    I would not attempt it. The enclosure is already tuned for the drivers currently installed in it. You would have to rework the crossover AND change the internal volume and port tuning. It would be easier actually to build an enclosure from scratch, which still would take quite a bit of time
    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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  • kcoc321
    kcoc321 Posts: 1,788
    edited August 2009
    Hey Gary welcome to CP.

    As has been, said adding a couple more drivers is, unfortunately, not as simple as one would think/ hope. I know I have thought about it...lol

    First you need to get the design specs of the mid-range drivers and the tweeters.
    Unfortunately, Polk does not publish those. You can try contect them and see if they will give it to you. I know others here have gotten some help from them.
    Next you need to get some speaker design software. Check on PartExpress, they sell several.
    Once you have all the data, you would then design/ redesign the speaker for the new parameters.
    I do not know what software to use for redesigning the cross-overs.
    I am sure there are some available.
    I know, alot huh/

    All that being said..IF what you are looking for is to increase the clarity and responsiveness of your speakers, then
    Just upgrade the Cross-overs with new capacitors and resistors.
    It is fairly easy and will enhance your speakers considerably.
    The wiring specifications are found here:
    http://www.polkaudio.com/forums/showthread.php?t=38755
    just look for your speakers.
    I would suggest the SoniCaps Gen I, although I have not jumped in on mine yet, they are a good bang for your buck for under $100.

    I would also consider upgrading some of the other elements on your sourse to speaker path. upgrading speaker wires, IC power cables, all can add to you "End product"

    Good luck and have fun :D
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  • nguyendot
    nguyendot Posts: 3,594
    edited August 2009
    I have the specs of the MW7009 driver.....
    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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  • kcoc321
    kcoc321 Posts: 1,788
    edited August 2009
    nguyendot wrote: »
    I have the specs of the MW7009 driver.....

    What Speaker(s) do those go in/ come from?
    (you must have some "pull" with Polk...lol)

    I have seen the MW7010's on ebay (the 'marvin guy) and "I thought" he said in his ads that they were from RT12's...He also lists the specs for them, and I have wondered about those MW's.
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  • garynorton
    garynorton Posts: 2
    edited August 2009
    A sincere thanks for all the assistance. I will purchase new Polk speakers. I declare this issue closed.
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  • kcoc321
    kcoc321 Posts: 1,788
    edited August 2009
    nguyendot wrote: »
    I have the specs of the MW7009 driver.....

    nguyendot, could you post the specs for the MW7009 mids?
    thanks
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  • Face
    Face Posts: 14,340
    edited August 2009
    kcoc321 wrote: »
    nguyendot, could you post the specs for the MW7009 mids?
    thanks
    I wouldn't post them, I don't believe Polk wants their driver specs published. If anything, send them in a PM.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • nguyendot
    nguyendot Posts: 3,594
    edited August 2009
    kcoc321 wrote: »
    nguyendot, could you post the specs for the MW7009 mids?
    thanks

    Email me

    tuananh_nguyen@dell.com and I will send them to you. Their drivers are proprietary and I will not post the specs publicly.
    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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  • kcoc321
    kcoc321 Posts: 1,788
    edited August 2009
    nguyendot wrote: »
    Email me

    tuananh_nguyen@dell.com and I will send them to you. Their drivers are proprietary and I will not post the specs publicly.

    I understand your position.
    email sent.
    Thanks
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