SDA 2 identification

[bluecomet]

I am about to sell my SDA 2 speakers and just want to make sure what model they are. They have the one tweeter but are blade/blade. Are they SDA 2A's or can they be SDA 2B's. I know most SDA 2B's are pin/blade.

[Hamatym]

Hey old Buddy, I think I got an easy way to check! Take out the "Stereo" driver and see what part number it is. Looking at the SDA Driver chart:
1) If it's a MW6510, then it's 2A's (The dim. driver would be the same)
2) If it's a MW6503 then it's 2B's (The Dim. is MW6511)

I hope this helps!!

[bluecomet]

I pulled the stereo driver and it is the MW6510. So it looks like it is the SDA 2A's. Thanks for the assist buddy.

[Hamatym]

Anytime Bcomet!

[pitdogg2]

I always thought SDA 2A had 3 drivers and 1 tweeter was there 2 different 2A's?

[Hamatym]

From the list, it looks like original SDA-2 had (3) MW6501 driver's...then the 2A's are as listed above. Maybe there were some transitional models made that showed this?

[Disc Jockey]

If you have 6510s, they are SDA 2A. One tweet, two mids (both 6510) post a pic if you want further confirmation.

[comfortablycurt]

I always thought SDA 2A had 3 drivers and 1 tweeter was there 2 different 2A's?

No, you're thinking of the original SDA 2's. The original 2's had 3 MW's and 2 tweeters each. The tweeters were the "dimensional" tweeters that all of the earliest SDA's had.

2A's have 2 MW's, which are both 6510's, and one tweeter. The 2B's had 2 MW's, but used one 6503 and one 6511 in each, along with a single tweeter.

There were also differences in the cabinets. The 2A's had all wood grain cabinets, with "pedestal" bases that put the cabinet itself a few inches above the floor. The 2B's had cloth sides, and wood top/bottom caps, such as the SDA 1C's. Most 2B's were pin/blade, but the earlier ones were blade/blade. There were also some transitional 2B's that used the 2A style cabinets, and blade/blade IC's.

As others have said, you've got 2A's. I've got a pair of 2A's myself, and they're some fine sounding speakers.:)

[pitdogg2]

thanks guys just checked myself and both mine also 6510mw. I was always led to believe i had SDA2b's when in fact they are 2A's. Just goes to show your never to old to learn