Speaker interconnection cable

[Dr. James Cente]

Hi , I am a newbee to this wonderful forum , so if this post appear a little strange its' because its' my first post.I have a pair of SDA 2 B and I am attempting to locate the interconnection cable. If theres' anyone that can help , I would appreciate your help.thanks

[dorokusai]

The SDA2B uses a pin/blade interconnect, if this paperwork is right. The blade/blade, is still available, but I am unsure about the pin/blade. I think that it is still available.

Email kswauger@polkaudio.com and he can check for availablility. If they do not have it anymore, someone may chime in and answer that, then there is a member here that makes the "lost" A1-I cable, perhaps he will help you.

That is a fine speaker, enjoy :)

[Zero]

I have a spare pin/blade cable if you need one. Special note: It does not the one with an isolation transformer (AI-1). That being said, it will work only if you have a grounded amplifier. If you need one made for you, Im sure our Har Navalta will assist ya.

Sean

[Frank Z]

Blade-Blade type are still available but the Pin-Blade are not. If you want to make either they are pretty simple really. Ken from Polk CS told me how to make mine (pin-blade). The center pin from an RCA connector and a 1/4 male blade connector are all that's needed (2 of each of course). The wiring is straight through, pin to pin, and blade to blade.

[dorokusai]

Yep, Frank is dead-on. Ken has the schematic for the cable available for email, that slipped my mind. You can make the actual cable cheap or extremely high end, it simply cable. The crossovers do the work. The A1-I is different in that respect, as it performs a function other than signal delivery.

Sean - Honestly, I would hold on to that interconnect, jusy in case. If you sell it here in the forum, thats the first question that is going to come up. It is Polkie of you to offer, Kudos.

[Dr. James Cente]

Thank each and every one you you for your responses, I think I will attempt to make the cable. thanks again.

[Tour2ma]

Dr. C,

As alluded to above, do be sure your amp is a common ground design for use with the stock SDA IC. Most are, but some are not.

[tomhoutx]

I also had lost my interconnect cable to my SDA1 speakers but a Polk techician told me that I could make up my own cable simply by using a RCA plug and a single conductor cable, because The the flat blade was not needed. I did this and all of the (4) MW6501 speakers seem to be working on both speakers. If I'm wrong about this, I would appreciate someone speaking up. It wouldn't be hard at all for me to add the "blade" side as I did use a 2-conductor cable. The RCA male plug did seem a bit loose. so I did pinch it a bit with the inside flat edge of a pair of needle nose pliers and they seem to be gripping better.
OH... One other thing. I have seen the pin and blade connectors at a local electronics store here in Houston. Although I did not get the model number, they were made by Cinch-Jones.

Thanks,
Tom

[dorokusai]

Tom - I have heard also that the blade was just to secure the plug into the socket better. However, there are wires that connect to each post, blade and pin, for the crossover connection on my SDA1C....I would think its the same throughout the line.

Would you mind finding out some more information on that cable? There may be some others that would like to know if thats a drop in replacement. Good eye. :)

[F1nut]

Tom,

This pic is from the stock binding post on my 2.3TL's. As you can see there are two wires coming off the IC post. The one from the blade connection goes to the black (negative) binding post and the one from the pin connection goes to the crossover. Since Polk hooked it up that way I would have to think there is a good reason.

I would like to echo Doro's statement, please find out about the cable at the Houston store, it would be of great benefit the the members here.

[Tour2ma]

F1,
Well that explains the common ground amp requirement...

Question now becomes, if you don't connect the "blades" and you still get the SDA effect (still not a given at this point), is this a way to get around the use of a non-common ground amp?

May need this one carried to Matt....

[Kenneth Swauger]

Hello,
Let me offer an explanation on the interconnect cable continuity. On the twin/blade cable there will be continuity on both blades from end to end. On the pin/blade cable only the pin will show continuity from end to end, both interior wires are connected to the pins. There is not continuity from blade to blade.
This was done to prevent damage to a non-common ground amplifier. With the earlier twin/blade cable a non-common ground amp could be damaged if connected. With the pin/blade cable all that would result would be no SDA signal, the amplifier wouldn't be shorted out, just no SDA. In a common ground amplifier and the pin/blade cables the necessary ground connection would happen via the amplifier's common ground, internally. If the amplifier isn't a common ground design, nothing would provide the necessary grounding connection, so no SDA, but the amplifier wouldn't be shorted out.
Regards, Ken

[Tour2ma]

Velly interesting...

So now we have the means of testing whether amps are common ground...:D

Thanks Ken...