The inductor upgrade thread - sourcing and part numbers

quadzilla
quadzilla Posts: 1,543
edited March 2013 in Vintage Speakers
So I know there's a bunch of threads related to upgrading inductors, but I also seem to recall them tending to be sub-threads within other, more general, upgrade threads. After spending the last couple hours digging through the results of a couple of searches, I decided to revert to my default lazy bastich self and just ask; what is the consensus on sourcing replacement/upgraded inductors for various Polks? In my case, I'm interested in inductors for my 2.3 TLs, but it might also be nice to collect this information into a single thread, since it does seem to be so spread out over the forum.
Turntable: Empire 208
Arm: Rega 300
Cart: Shelter 501 III
Phono Pre: Aural Thrills
Digital: Pioneer DV-79ai
Pre: Conrad Johnson ET3 SE
Amp: Conrad Johnson Evolution 2000
Cables: Cardas Neutral Reference
Speakers: SDA 2.3TL, heavily modified
Post edited by quadzilla on
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Comments

  • drumminman
    drumminman Posts: 3,396
    edited March 2013
    It's a good idea. In our case Polk has lost the data on dcr values of the inductors on the Xovers of the 2.3TL's (I called them). The schematics list the AWG and mH but not the dcr.

    The inductors would have to be removed and measured with the appropriate equipment. I can't remember what that is, but it's not something I own, and it's expensive. Taking the inductor to an electronics shop and having them do it is an option.

    It's something I've thought about, but I don't know of any shops close by that would do this. I wouldn't want to send them off and have them get lost :eek:
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer
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  • michael1947
    michael1947 Posts: 775
    edited March 2013
    What does the inductor do. Do they go bad? Will a different size improve performance?
    Main Family Room: Sony 46 LCD, Sony Blue Ray, Sony DVD/VCR combo,Onkyo TXNR 708, Parasound 5250,
    Polk SDS-SRS with mods, CSI 5 center + Klipsch SC2, Polk RT2000P rears, Klipsch KG 1.5's sides, Polk Micro Pro 1000, Polk Micro Pro 2000, Polk SW505, Belkin PF60, Signal Cable Classics,Monster IC's, 2 15 amp circuits & 1 20 amp circuit.

    Living Room: Belkin PF60, Parasound HCA2200, MIT ProlineEXP balanced IC's,Emotiva XDA-1 DAC/Pre,Emotiva ERC2 transport,MIT AVT2, Polk LSI 9's.
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  • michael1947
    michael1947 Posts: 775
    edited March 2013
    Nevermind, I just looked it up on wiki and it's way over my head...but I have seen modified crossovers which included new inductory, maybe Vr3 and Darknight so those guys are way up the food chain in electrocutions of speakers and stuff. My hat is off to those who actually modify these wonderful speakers, and I know there are lots more of you guys doing it.
    Main Family Room: Sony 46 LCD, Sony Blue Ray, Sony DVD/VCR combo,Onkyo TXNR 708, Parasound 5250,
    Polk SDS-SRS with mods, CSI 5 center + Klipsch SC2, Polk RT2000P rears, Klipsch KG 1.5's sides, Polk Micro Pro 1000, Polk Micro Pro 2000, Polk SW505, Belkin PF60, Signal Cable Classics,Monster IC's, 2 15 amp circuits & 1 20 amp circuit.

    Living Room: Belkin PF60, Parasound HCA2200, MIT ProlineEXP balanced IC's,Emotiva XDA-1 DAC/Pre,Emotiva ERC2 transport,MIT AVT2, Polk LSI 9's.
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  • quadzilla
    quadzilla Posts: 1,543
    edited March 2013
    Yeah, I've already done nearly the full treatment on my 2.3s. All that's left is inductors, and maybe replacing the high frequency caps with Claritycap MR series instead of the ESAs I have in there now.
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: Aural Thrills
    Digital: Pioneer DV-79ai
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Evolution 2000
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
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  • westmassguy
    westmassguy Posts: 6,850
    edited March 2013
    In my case, SDA-2As, I left the Hi-Pass, and Low-Pass inductors as-is. I was interested in the "Full Complement Sub-Bass Drive" inductor, or simply put, the inductor that goes between SDA driver's negative terminal and the amps negative terminal on that side. I couldn't afford a 14 gauge air core, so I opted for an Erse Laminated Steel Inductor. The difference was dramatic to say the least. I doubt the Erse would be applicable to the larger SDAs though, since it's rated for 600 watts before saturation.
    Here's a direct link: http://www.erseaudio.com/Products/SuperQCoils14Gauge/ESQ55-14-5600
    This applies to the SDA-2As, and CRS blade/blade, 3rd generation
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer

    dhsspeakerservice.com/
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  • Toolfan66
    Toolfan66 Posts: 17,243
    edited March 2013
    I don't have any Stock crossover parts left in my 1.2tl's or CRS+'s as a matter of fact the only stock parts left on the speakers are the cabinets, drivers, and passives. LOL!!!

    I highly recommend doing the inductors if you can do it.
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  • quadzilla
    quadzilla Posts: 1,543
    edited March 2013
    So gimme some daggum part numbers :razz:
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: Aural Thrills
    Digital: Pioneer DV-79ai
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Evolution 2000
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
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  • VR3
    VR3 Posts: 28,646
    edited March 2013
    I became. Jantzen dealer about 2 weeks ago and can do the special order inductors for you guys....

    just shoot me an email and I will get you pricing! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • quadzilla
    quadzilla Posts: 1,543
    edited March 2013
    You have the specs for 2.3 TLs by chance? I don't.
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: Aural Thrills
    Digital: Pioneer DV-79ai
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Evolution 2000
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
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  • VR3
    VR3 Posts: 28,646
    edited March 2013
    Yea.

    shoot me an email
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • drumminman
    drumminman Posts: 3,396
    edited March 2013
    VR3 wrote: »
    Yea.

    shoot me an email

    Trey, PM sent.
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer
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  • quadzilla
    quadzilla Posts: 1,543
    edited March 2013
    Why not both? Also, you ever going to respond to the PM I sent you about your left over panels?
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: Aural Thrills
    Digital: Pioneer DV-79ai
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Evolution 2000
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
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  • VR3
    VR3 Posts: 28,646
    edited March 2013
    I responded to everyones PM/Email :-P
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • zingo
    zingo Posts: 11,258
    edited March 2013
    VR3 wrote: »
    Yea.

    shoot me an email

    He'll set you right.
    Jake
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