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Thread: My New SDA-2Bs

  1. #1

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    Question My New SDA-2Bs

    Afternoon,
    So last night I purchased my first pair of good speakers. Mainly due to the active and helpful nature of this forum, I decided that it had to be some sort of SDA. Well a pair popped up on my local Craigslist for $250. Upon viewing the speakers I did the passive radiator test for stuck drivers, and they all checked out. I had my receiver with me and tried them out for a few minutes, but we were in an active warehouse e.g forklifts were driving about, so it wasnt really an ideal auditioning environment.
    Unfortunately the cabinets were in rough shape. These are the later 2Bs so they have real woon veneer on the top and bottom with cloth on the sides. The cloth was in good shape, but the veneer was cracked and worn all over. Even the MDF base had wear on the rear corners.
    Additionally, one of the the pins was broken at the base, enough was left to screw onto, but just barely.
    Finally, he was having trouble locating the SDA cable, but the seller knew that it was somewhere in the warehouse, and he was going to be going though its contents in it's entirety in the next week. (I came on the last day of his lease, so he was moving everything into semis.
    Given all the problems, I managed to talk him down to $190, with the agreement that if he found the SDA cable I would give him another $10.

    So, I am currently making repair plans and have several questions:
    1: Are there binding posts that can be purchased that can replace the stock ones without modifying the hole size?
    2: I was planning on having a local furniture maker make new MDF tops and bases for the speakers with some exotic veneer (thinking ebony). Has anyone ever replaced this part of the cabinet successfully? I couldn't tell if they were mainly decorative or if they were the top and bottom of the cabinet.
    3: If I end up having to make a new interconnect cable and install binding posts for that, will any decent post and cabling do?
    4: Just out of curiosity, did I overpay in my haste to get a pair of SDAs?

    P.S. I have them hooked up and they sound great even without the SDA cable. Way better than the Pioneer Cs-66s they replaced.
    P.P.S I do have some experience with soldering speaker crossovers, having recapped the 66s earlier this summer.

    Thanks for the help.
    -M

  2. #2

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    Congrats, and welcome to Club Polk.
    Binding post: Cardas fit the holes, but are expensive. Parts Express has quite a few more cost effective posts to choose from as well.
    Veneer top and bottom, F1nut would be the person to ask.
    Do not use binding posts for the IC Cable, convert to Speakons. They're inexpensive, foolproof, and will accommodate just about any type of wire you may want to use.
    Whether you overpaid or not is entirely subjective. Everything works, so you're mainly talking cosmetics. I'd say that's a fair price.
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


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  3. #3
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    Congrats on the purchase!

    There are many here who have original binding posts floating around, and probably would be willing to send them to you at little cost. The same may be true for an IC cable; do you need blade-blade, or pin-blade?

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    Congrats and welcome to the forum Nothing but for real cats here. You now will get the polk bug and your house will become a polk showcase. Mine is!! lol The 2B's do their thing for sure!
    "if it's not fun, it's not worth it!!"
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  5. #5
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    Pictures?

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    Congrats & welcome & enjoy your new to you speakers :)
    Randy
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  7. #7

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    Thanks for the quick replies. I'm pretty sure the interconnect is the blade/blade, two flat holes with one being slightly larger than the other. My only concern is one of the SDA website, I forget which one, lists my model as having pin/blade. Is the pin on the pin/blade pretty clearly round? Also, if I was able to get some original binding posts would it be possible to just use one of them, as only one of the posts is broken, or are the original binding posts one single unit?
    -M

  8. #8
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    You could replace just the broken one; it will be secured with a nut, and maybe some glue on the back.

    There was probably a pin-blade version of your speakers also, but it does look very different, and it would be hard to confuse the two.

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    Quote Originally Posted by mhanig View Post
    Thanks for the quick replies. I'm pretty sure the interconnect is the blade/blade, two flat holes with one being slightly larger than the other. My only concern is one of the SDA website, I forget which one, lists my model as having pin/blade. Is the pin on the pin/blade pretty clearly round? Also, if I was able to get some original binding posts would it be possible to just use one of them, as only one of the posts is broken, or are the original binding posts one single unit?
    -M
    mhanig, I've a got a few original binding posts, I didn't realize you just needed one to replace a broken one. I can send you a pair
    If you could post a pick I'll see if I can match it. There are several versions that Polk used
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


    www.dhsspeakerservice.com

  10. #10

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    Here are some photos of the problem areas as well as one showing the incongruously clean grill cloth.

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    My current wiring solution.
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  11. #11

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    Quote Originally Posted by mhanig View Post
    Here are some photos of the problem areas as well as one showing the incongruously clean grill cloth.
    My current wiring solution.
    [
    Are you missing nuts on the other ones too?
    I can send you two pair
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


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  12. #12

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    Quote Originally Posted by westmassguy View Post
    Are you missing nuts on the other ones too?
    I can send you two pair
    Thanks for the offer.
    The other speaker has both posts and nuts. I actually have the black nut for the speaker with the broken pin, you can see it in picture 3, but I took it off to show how the pin is broken. I am missing the red one for that speaker. Do you have a matching binding post? How much do you want for them?

  13. #13

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    Quote Originally Posted by mhanig View Post
    Thanks for the offer.
    The other speaker has both posts and nuts. I actually have the black nut for the speaker with the broken pin, you can see it in picture 3, but I took it off to show how the pin is broken. I am missing the red one for that speaker. Do you have a matching binding post? How much do you want for them?
    I have the heavy duty posts. I'll send to you no charge
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


    www.dhsspeakerservice.com

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    You do in fact have the blade-blade interconnect. Good news for you, as Polk still sells that one (and not the pin/blade). You can call them and they'll send one your way--mention you're a Club Polk member and you may be in line for a discount/discounted shipping.

    I also have a pair of blade/blade 2Bs, so you're not alone!

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    Congrats, I also am a new owner of SDA-2bs. Mine just had some deep water stains on the tops and w/ the help of F-1 a pro woodworker in his own right guided me through a process which turned water stained white oake tops into deep dark walnut.I think removing the tops was an iffy proposition for me so I did not take them off. I believe on the for sale side the IC cable comes up from time to time or there are threads on how to make your own.Good luck and again these are great speakers and I was a non believer for a long time and so converted now.Mine are blade/blade.

  16. #16

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    I decided to take westmassguy's advice and will be putting in a speakon port on the back and making a new interconnect. The biggest reason I want to make new "end pieces" is because the bottom ones have a lot of the veneer and what I assume is MDF worn off the bottom rear. There are also a few places where the veneer is missing. I was thinking of PMing F-1 to get his advice, unless that would be a breach of etiquette.
    -M

  17. #17

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    Your posts went out this morning :)
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


    www.dhsspeakerservice.com

  18. #18

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    You won't be disappointed with the Speakon connectors. They lock in place tightly when you connect them but are still quick and easy to disconnect. Another good feature is they are keyed for proper alignment so you can't connect them wrong. westmassguy installed them for me when he did the TL upgrade on my 2B crossovers. BTW, if you need any crossover upgrades he does excellent work.
    SDA 2BTL Sonicaps Mills resistors RDO-198s New gaskets H-nuts Erse inductors Crossover upgrades by westmassguy
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  19. #19

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    Thanks Ronnie
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


    www.dhsspeakerservice.com

  20. #20

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    So today all of the parts came in. Thanks again, westmassguy. And I have begun replacing the binding post and mounting the new hardware . My question is this:
    The SDA cable is already crimped at the mounting board (where the posts are), and slides off the rear of the SDA port now that the glue is removed. Is there any reason to make a new wire or can i just slide this one on the back of the Speakon?
    -M

  21. #21

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    Quote Originally Posted by mhanig View Post
    So today all of the parts came in. Thanks again, westmassguy. And I have begun replacing the binding post and mounting the new hardware . My question is this:
    The SDA cable is already crimped at the mounting board (where the posts are), and slides off the rear of the SDA port now that the glue is removed. Is there any reason to make a new wire or can i just slide this one on the back of the Speakon?
    -M
    If it's the same size spade, clean it, apply some DeoxIT, make sure it fits nice and snug, and you'll be fine
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


    www.dhsspeakerservice.com

  22. #22

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    Ok thanks. Here is a picture of what I was thinking. Name:  photo.JPG
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    Obviously I will be mounting the female speakon.

  23. #23

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    Quote Originally Posted by mhanig View Post
    Ok thanks. Here is a picture of what I was thinking. Attachment 88275
    Obviously I will be mounting the female speakon.
    That's fine, just make sure you clean all the hot glue off, re-tension them if needed, and a little DeoxIT
    Home Theater/2 Channel:
    Front: SDA-2ATL http://www.polkaudio.com/forums/show...ished...Almost
    Center: Custom http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat, H-Nuts, BH5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer


    www.dhsspeakerservice.com

  24. #24

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    I just finished. I sort of bungled the enlargement of the hole where the SDA jack goes, but I put a bunch of hot glue on it, which seems to be working, and will have to due till I have the funds and motivation to replace the tweeters. I can definitely see why the speakon plugs are popular, though it was a bit of a pain to get the wire soldered to the little metal bracket. Went with some Mortite that I had laying around to reseal them.
    I'm pretty happy with the results:
    Click image for larger version

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  25. #25

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    Looks good. The caps and tweet upgrade is a must at some point. Especially since you have put so much work into them so far
    "My wife likes my rig......HAHAHAHAHAHAHAHAH!"


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