Polk 1.2TL upgrades

c0redumpt

Hello fellow Polksters,

I am quite the noob when it comes to undertaking mods to the 1.2TL's. I've been reading posts in here for a while now and think I know what is required, but would like some reaffirmation of what I'm doing

I have had a dreadnought made as per posts in here ... and now am looking at upgrading my gear to include a pair of pass aleph 1 monoblocks in my system. I've ordered some Vampire BPHEXCB assemblies to replace all the binding posts and am looking at replacing the pin/blade connector with a vampire binding post also.

I am a little confused in that from what I've read the blade does nothing for the sda signal as per this thread http://www.polkaudio.com/forums/showthread.php?108598-My-custom-SDA-cable&p=1448115&viewfull=1#post1448115

But the dreadnought I had made has both a positive and negative binding posts? So am now not sure whether I can get away with the one binding post replacing the pin/blade connector or if I am required to have 2 binding posts to replace the pin/blade connector?

Any advice would be greatly appreciated :biggrin:

Toolfan66

With the dreadnought you need both + and -

I have only one binding post on my CRS+ and 1C's , the positive goes to the one binding post and just hook up the negative to the negative binding post on the speaker side.

If you pull the cup you will see a wire going from the blade to the negative binding post..

Toolfan66

That is my old thread and that was before my dreadnought and I had the negs tied together on my amp..

drumminman

Toolfan66 wrote: »

With the dreadnought you need both + and -

I have only one binding post on my CRS+ and 1C's , the positive goes to the one binding post and just hook up the negative to the negative binding post on the speaker side.

If you pull the cup you will see a wire going from the blade to the negative binding post..

+1, that is how my dreadnought is connected. Works great!

nspindel

+2

Yup, that's how it's done...

nspindel

I had Signal Cable do up some speaker wires especially for the Dreadnought. My "normal" speaker wires are bananas at both ends. For the Dreadnought, I had Frank make me a pair of cables that were bananas at one end (the Dreadnought end), and the other end would have the Red (+) as a banana and the Black (-) as a spade. That way I am able to attach to banana from the "normal" cable and the spade from the Dreadnought cable to the same ground post on the speaker. Works like a charm.

c0redumpt

Thanks for all the advice Am beginning to understand what is needed have made an order with Sonic Craft for some vampire binding posts plus other bits n pieces as per gimpods advice for a future crossover upgrade...

Interesting times ahead me thinks

drumminman

Did you find your 1.2TL's in Oz? Is Polk a popular brand down under?

I've been there a few times, but only into a stereo shop once. Don't recall the brands, but not too many I recognized at the time.

c0redumpt

I did end up getting them locally, when I was a young-un about 20 or so years ago remember seeing and hearing the 1.2TL's in a local hifi shop with some carver amps, and always lusted after them ever since.

When I could afford them I managed to find a pair of 2nd hand 1.2TL's around 900kms away 10 years back so hired a little van and undertook a nice roadtrip to get them :cheesygrin:

Polks arent that popular down here as the local mainstream and boutique builders have a presence...

They are still around in one of the few remaining hifi stores here in South Australia, when I went last they were setup more for Home Theatre duties however... Haven't seen many vintage polks like the 2.1, 3.1's at all though

drumminman

Heck, 900kms is just a ride around the block for you Aussies! Be sure and posts pics of your progress, and don't hesitate to ask questions!