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dougd
10-09-2005, 03:13 AM
It all started a few weeks ago when I went to pick up my 32" sony lcd tv that I purchased from a local ebayer. He had a sony 5 disc dvd and a sony 5.1 receiver that he was also looking to get rid of, so I scooped them up too.
I had decided I would buy some old 901's to go with my new toys. As fate would have it I found a pair of 10b's on craigslist so I came here to do the appropriate research. I of course purchased them at the very reasonable price of 140. Needless to say I was very impressed with the sounds, however after about 4 days they were getting old, and again fate stepped in, would you believe another pair of polks on craigslist, this time sda1's and the guy was giving them away.Fortunately I was the first of about 10 e-mail respondents so the guy called me and I have now replaced my old 10b's in the bedroom with these monsters. Sorry for the rant but I am excited about my new toys and wanted to share my experience.Now for my questions-
#1 the guy was the orginal owner and assured me that they are "sda1c"
the back only reads "sda1" Do I have to pull a driver out to determine?
And can you guys confirm for me that the c is the most desirable of the abc's
Also if I do have to pull a driver is there any thing I need to know?
#2 While the speakers sound amazing to my novice ears, I do have a problem with 1, maybe 2 of the mids on one of the speakers. I can't come up with the proper word to describe it, as I am obviously not an audiophile-all I can tell you is that I can only here at a pretty high volume level and it only comes out during the bass portion of a song. I'm sure the driver or drivers need to be replaced so I would appreciate some advice on how best to proceed.
Thanks much,
Doug
Dennis Gardner
10-09-2005, 03:27 AM
SDA1s don't mark them abc. I'm not sure if the drivers will tell you much. What are the serial numbers? My 1Cs have 87xx numbers. If yours are after that, then they are likely Cs.
Dennis Gardner
10-09-2005, 03:29 AM
Do you have the SDA interconnect cable?

That is the only way that all mid drivers work. Without this, they are not giving SDA, only stereo.
dougd
10-09-2005, 03:32 AM
The serial numbers are 8007,8066
dougd
10-09-2005, 03:34 AM
Yes, I have the orginal interconnect cable.
Dennis Gardner
10-09-2005, 03:34 AM
Is the connection above the speaker posts a pin/blade (round with a horizontal slot below) or blade/blade (2 horizontal slots)?

Pin/blade = 1Cs
Blade/blade =earlier models.
dougd
10-09-2005, 03:37 AM
I have the pin/blade, is this more desirable than the earlier models?
Thanks for your response, I guess this means I have the 1c
Dennis Gardner
10-09-2005, 03:42 AM
Sounds like 1Cs. I don't really know which is more desireable? To each his own. Each upgrade was supposed to correct issues with early versions, but the differences are small. The full covered cabintes seem to bring a little more than the studio models with the wooden stands.

The SDA speakers that bring the other side's stereo signal to each speaker are to the inside if your speakers are set up properly left and right. Those mids will give a less strong signal than the outside, since they are delivering the SDA cancelling signal.
This is normal and you may not have any bad drivers.
WilliamM2
10-09-2005, 03:59 AM
I've never heard the original SDA1, but the B's and C's perform almost identically. The driver arrangement is the same, the difference is mostly in the cabinet.

It's personal preference really. I prefer the C's (Oak caps prefered) because I have always felt they were beautiful speakers. With the fabric sides and wood caps, they still look contemporary. The old models looked dated to me, even when they were new, but like I said it's all preference.
Dennis Gardner
10-09-2005, 04:04 AM
I agree with ya' on the cloth sides looking better. They look more like baby SRSs.

Here are some pictures for model reference: The 1a has multiple horizontal tweets.
george daniel
10-09-2005, 08:45 AM
Yeah, when I first saw mine, I thought they looked like some Vandersteen's that I saw a few years ago :)
ND13
10-09-2005, 11:33 AM
It looks as though the SDA bug has bitten another unsuspecting victim.

Enjoy those badass speakers.

You better care for them properly or we'll know and have to hunt you down and beat you with the interconnect. :D

Congratsl
tentoze
10-09-2005, 01:41 PM
dougd- after reading yr story, I get the sneaky suspicion yr in Vegas, eh? If my guess is right, I can't believe you got an email to that guy quicker than I did. And, hell yes he gave them away. Congrats!
BobMcG
10-09-2005, 04:34 PM
Blade/blade =earlier models.

Correct, but also includes the earliest 1Cs too. :)
Dennis Gardner
10-09-2005, 04:45 PM
Correct, but also includes the earliest 1Cs too. :)

I knew that too Bob, but knew if he had p/b he had Cs. Polk really had a hard time making changes in most of their lines. They seemed to meld line changes together until they had sufficient supply of the new parts to be consistent. You see that even on their SRS line don't you?
BobMcG
10-09-2005, 08:49 PM
Just didn't want the less informed to think there weren't any b/b 1Cs out there.
DarqueKnight
10-10-2005, 02:02 AM
I've never heard the original SDA1, but the B's and C's perform almost identically. The driver arrangement is the same, the difference is mostly in the cabinet.


The SDA 1B and SDA 1C are entirely different speakers. The driver arrangement is the same, but the mid-woofer drivers are different. The only things the 1B and 1C have in common are the SL2000 tweeters and SW 120 passive radiator. The cabinets, drivers, and crossover circuits are different.

I own both models. They do not perform or sound anywhere near identical to each other. It would be amazing if they did, given the differences cited above.