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  1. #1

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    Default Lookie what I got -- RTA-12C

    I was keeping eyes open for these and they showed up today.
    Except few scratches/dings, these are in excellent condition including grills.
    :-)

  2. #2

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    Then post some pics!

  3. #3

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    Quote Originally Posted by trav0810 View Post
    Then post some pics!
    Maybe he wants to keep that a Mystery too??

  4. #4

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    Red face Here is a teaser...

    The cabinets are still in the car so for now picture of the tweeters and their grill only.

    Name:  Polk RTA-12C Tweeters.jpg
Views: 828
Size:  125.4 KB

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  5. #5

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    Great great speakers.I love those.

  6. #6

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    Nice!

  7. #7

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    Very nice. U will love them
    Main Rig:
    Krell KAV 250a
    McIntosh MC 2120 bi-amped
    Into JBL L123 drivers
    Rane external crossover.
    MIT exp 1 ic's
    Perreaux SA33 class A preamp
    AQ kingcobra ic's
    ADCOM GDA 700 DAC ( MODDED)
    YAMMY CDC-665
    Marantz 6100 tt w/pickering XV-15/625E cart.
    Monster HTS 3600 power conditioner
    POLK RTA-12C'S W/ RDO194 TWEETS, clarity ESA caps mills risistors (full mod)
    MIT exps2 speaker cable

  8. #8

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    Quick question.
    The socket from crossover has 3 pins like XLR with black, white and blue cables.
    What orientation is correct connection?
    It looks like I can connect it all way around.
    Is the blue wired pin on the front?

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  9. #9

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    Thumbs up

    Never mind.
    There are small numbers on the pin and socket that I didn't notice before.
    It's too late to test them today but here are few pictures for your viewing pleasure.


    Click image for larger version

Name:	Polk RTA-12C (1)-small.jpg
Views:	727
Size:	139.1 KB
ID:	76797

    Click image for larger version

Name:	Polk RTA-12C (3)-small.jpg
Views:	418
Size:	162.1 KB
ID:	76798

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  10. #10

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    Those are in REMARKABLE condition...... which fellow Polkie in CO did you get them off of lol.... you help audio_alan lighten his load hehehe...

    BTW thats how the top hats are supposed to look. Those look straight off the showroom floor!
    Advice is free, the Flea Market is earned - F1Nut

    Main HT: APC H15 | Pio 51FD | Uverse DVR | Xbox 360 | Squeezebox Classic | Integra DTR 5.9 | Carver AV-705x & M1.0t MKII Opt002 | LSi 15 | LSiC | LSi F/x | Kimber Hero IC & 8VS SC

    Office Rig: Win 7 -> DacMagic w/ Pangea PSU | Pro-ject Debut III | Sunfire TGP-II | Parasound HCA-750ii | Polk RTA 11TL | Cables TBA

    Bedroom: Uverse DVR | Roku 2 | Samsung LCD | SurroundBar 2000

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  11. #11

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    Nice looking set. I've had mine for 25 years and are still going strong.

  12. #12

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    Stunning!! Congrats

  13. #13

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    Those look brand new! Congrats.

    Get some listening time with them and then start the mods. However good they sound now, you can take'em to a whole new level. I love mine!
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills, polyswitches removed, Lg Solen inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR binding posts, upgraded IC Cable, Black Hole Damping Sheets (3" strips) installed on back wall behind MW's & Tweeters, interior of cabinets sealed, AI-1 interface with 1000VA transformer

  14. #14

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    Beautiful set. Now the real fun begins!

  15. #15

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    Thumbs up

    Thanks for comments.

    Quote Originally Posted by EndersShadow View Post
    Those are in REMARKABLE condition...... which fellow Polkie in CO did you get them off of lol.... you help audio_alan lighten his load hehehe...

    BTW thats how the top hats are supposed to look. Those look straight off the showroom floor!
    He had a very good heart to give them away for such a good steal.

    I don't think he was audio_alan at least not by the name.
    He was a nice guy in his 40's and we chatted for 10 minutes or so on the parking lot about vintage gears.
    It appears that he likes his Definitive technology better than these so I wonder what model they are.
    Oh, he also mentioned Polkaudio forums for tweeter upgrades and etc. so I know he knows about their value.

    Thanks to you for the deal if you come here and read this thread. :)

    Need to test them today with Yamaha M-50.
    Here is a picture of the back.

    Name:  Polk RTA-12C (4)-small.jpg
Views: 829
Size:  171.8 KB

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  16. #16

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    Those are in fantastic condition...

  17. #17

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    I love the 12C's. I like a healthy toe-in on them. Angle them right at the sweet spot and they image like crazy... one way in which they beat SDA's. Congrats!
    2-Channel:

    Source 1: PC
    Source 2: Rega Apollo CDP
    USB > SPDIF Converter: Stello U3
    DAC: Audio GD NFB-7
    Preamp: Audio Research LS-15
    Power Amp: BAT VK-500
    Speakers: Magnepan 3.7's

    HT:

    Source 1: HTPC
    Source 2: Oppo 103
    Pre/Pro: Marantz av8003
    Power Amp: Rotel RMB-1095
    Fronts: LSiM-705's
    Center: LSiM-704c
    Surrounds: LSiM-702's
    Subs: Dual SVS PC12-NSD's

  18. #18

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    Nice score! The 12Cs are sweet sounding speakers!

    Good work Mystery!

    G
    Mains Polk SDA SRS 2 (modified) Sub M&K MX-100
    Power Pass Aleph 30 & Adcom GFA 5802
    Power Conditioner Furman Elite 15 PF i
    Rears Definitive Technology BP-2
    Center Definitive Technology C-1
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    LCD Samsung LN46B750
    Source Oppo 105
    Wires MIT S3.3

  19. #19

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    Those r truly a sweet looking pair. Congrats!!!
    Main Rig:
    Krell KAV 250a
    McIntosh MC 2120 bi-amped
    Into JBL L123 drivers
    Rane external crossover.
    MIT exp 1 ic's
    Perreaux SA33 class A preamp
    AQ kingcobra ic's
    ADCOM GDA 700 DAC ( MODDED)
    YAMMY CDC-665
    Marantz 6100 tt w/pickering XV-15/625E cart.
    Monster HTS 3600 power conditioner
    POLK RTA-12C'S W/ RDO194 TWEETS, clarity ESA caps mills risistors (full mod)
    MIT exps2 speaker cable

  20. #20

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    Only got chance to test them briefly.
    All drivers/tweeters work and they have that thump I was missing from A400.
    These sound similar to CRS+ but have more mid range.
    These have strong/powerful sound, not harsh but forward and metallic.
    Stereo imaging and separation is amazingly good.

    Boston A400 are still favorite with smooth and dynamic sound but the RTA-12C's are not going anywhere for now until I can test them to their full potential and proper placement when I move to a house.

    Looks like I have to get rid of CRS+'s.
    Hmm...

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  21. #21

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    Great speaker that does everything well.

  22. #22

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    I came close to buying a pair of the 12Cs a few months ago. I was going to try putting my CRS+ drivers and crossovers in them to see how they would sound as SDAs. They were overpriced and the seller wouldn't budge so I passed. Maybe you would want to give that swap a try to see how it sounds. It would be an interesting project. Should be easy to do and easy to reverse if you try it...
    SDA 2BTL Sonicaps Mills resistors RDO-198s New gaskets H-nuts Erse inductors Crossover upgrades by westmassguy
    Adcom GTP-450 preamp
    Adcom GFA-555 amp Upgrades & speaker protection added by OldmanSRS
    Pioneer DV-610AV DVD/CD player
    SDA CRS+ Hidden away in the closet

  23. #23

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    Very nice old school speakers you got in great condition!

  24. #24

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    Post

    Just checked the product page and it mentions these go down to 17hz.
    http://www.polkaudio.com/products/rta12

    I don't think I heard even the 25 hz where it is -3db.
    May be it needs 500 wpc amplifier as that's the max range of watts as per specs to get that low frequency come alive.
    Hmm...

    Total Frequency Response 17Hz - 25kHz
    Upper -3dB Limit 21.5kHz
    Lower -3dB Limit 25Hz
    Nominal Impedance 4 ohm
    Recommended Amplifier Power 10-500 watts per channel.

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  25. #25

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    Not trying to be rude or anything, but you mention you got a great deal on these, what could one expect to pay for such speakers, they really arreap to be in beautiful condition?

  26. #26

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    Thumbs up

    Quote Originally Posted by TennMan View Post
    I came close to buying a pair of the 12Cs a few months ago. I was going to try putting my CRS+ drivers and crossovers in them to see how they would sound as SDAs. They were overpriced and the seller wouldn't budge so I passed. Maybe you would want to give that swap a try to see how it sounds. It would be an interesting project. Should be easy to do and easy to reverse if you try it...
    Interesting idea but I'm not that much into DIY plus don't have time for a project now.
    I'll move them to my bedroom and replace ADS L620 and New Large Advents that are in there.

    These RTA-12C's have better soundstage (RTA disappear better but have strong/powerful sound) than A400's (more directional) but both I and wife like A400's silky smooth sound much better than these so A400's are staying in the living room.
    I don't like NLA so much but L620's are very nice and these RTA-12C's should be better than both for the bedroom.

    Quote Originally Posted by drgalexo View Post
    Not trying to be rude or anything, but you mention you got a great deal on these, what could one expect to pay for such speakers, they really arreap to be in beautiful condition?
    From my research, their going price is $250 and that's a good price if all drivers working and good cosmetic condition.
    If you get anything below $150, it's a very good deal specially for a pair that looks as good as mine.
    If you get below $100, that's a steal...
    Last edited by Mystery; 10-29-2012 at 02:16 PM.

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  27. #27

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    Very cool. I bet they kick!
    Bedroom: HK AVR 254, JBL Sub 10, 5 x Mirage Omnisats, Panasonic BD-60

    Living Room: HK AVR 254, 2 x Polk Audio Micropro 4000, Adcom GFA-7500, 2 x Mirage OMD-15
    2 x Mirage OMD-5, 1 x Mirage OMD-C1, APC H15, Sony PS3 60gb, Wii, Xbox 360, Philips 52" LCD

    Den: HK AVR 354, 2 x Velodyne SPL-1000R, Adcom GFA-7500, 2 x Polk Audio Lsi9
    1 x Polk Audio Lsic, 2 x Polk Audio Lsifx, PS3 80gb, APC H15

    Sherwood R-972, Harmony One

  28. #28

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    Question

    I was going through old threads on these and found only the B and C versions of RTA-12 are mirror imaged with different crossover for mid drivers.
    http://www.polkaudio.com/forums/show...t-on-rta-12b-s

    I was assuming non of the other RTA models are mirror imaged as mentioned on the above linked thread.
    However, just found a scan of RTA11 that mentions they are mirror imaged as well.
    Hmm... so RTA-12B and C's are not the only mirror imaged RTA speakers.

    Name:  Polk rta11 desc-mirror imaged.jpg
Views: 505
Size:  156.8 KB

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

  29. #29

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    Quote Originally Posted by EndersShadow View Post
    Those are in REMARKABLE condition...... which fellow Polkie in CO did you get them off of lol.... you help audio_alan lighten his load hehehe...

    BTW thats how the top hats are supposed to look. Those look straight off the showroom floor!
    Words right out of my mouth. Damn sweet looking. Nice score there.
    Dan
    My personal quest is to save to world of bad audio, one thread at a time.

  30. #30

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    Quote Originally Posted by mantis View Post
    Words right out of my mouth. Damn sweet looking. Nice score there.
    Thanks.

    BTW, how much power should I give them?
    I don't have high power amps but I have couple that output over 100 wpc (Yamaha M-50 @ 120 wpc and Kenwood KM105 @ 125 wpc) at 8 ohms.

    Boston A400, DefTech BP10,BP-2, Klipsch KG2.5,KG4,KSP-400,KSF-C5,RF3,RC3.
    JBL L20t,L80t3,L166, EPI 20+,T/E 280, Polk 4,4.5,7C,RTA-11T, KEF Coda III, Yamaha NS-690.
    SUB:PF15TL+, Energy e:XL-S8, Optimus SW-10P, Velodyne VA08BVX10. Pre: HK AP2500. Amps: BB175, Adcom GFA-555II, Rotel RB-990BX.

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