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SDA Speaker Identification

This is a work in progress!

And will be updated whenever needed.

"Speaker manufacturers, like most manufacturers, sometimes find themselves in possession of a substantial amount of "orphaned" parts and components when a particular speaker model is discontinued. If minor modifications can be made in the newly introduced speaker model in order to use up the orphaned parts and components, that is preferable to taking a capital loss on the old parts inventory. There were a few "transitional" SDA models that went on sale before a new SDA model was introduced."

Please keep in mind the quote above and that I've put this list together from various sources from documents and threads on Club Polk, information from http://polksda.com/ and Google. I've tried to make it as complete and correct as I can, With that being said I'm sure there some things I've gotten wrong so if you spot something please let me know. Also some of the early SDA's may have MW6600x drivers that were later replaced with MW6501's.



Original Polk Tweeter Identification

SL1000

SL2000

SL3000


Original Polk SDA Interface Identification

3 prong RTA 12 type: Was used on the very first SDA 1 transitional models

blade/Blade

Pin/Blade


Polk SDA Generations
1st Generation (1982):SDA 1.
2nd Generation (1983):SDA 1A, SDA 2, and SDA CRS.
3rd Generation (1985):SDA 1B, SDA 2A, SDA CRS+. The 3rd Generation also marked the introduction of the "Signature Reference Series" (SRS) line: SDA SRS, and SDA SRS 2.
4th Generation (1987):SDA SRS 1.2, SDA SRS 2.3, SDA 1C, SDA 2B, and SDA CRS+. All SDA speakers received crossover and cabinet upgrades.
5th Generation (1989): SDA SRS 1.2TL, SDA SRS 2.3TL, SDA SRS 3.1TL, SDA 1C, SDA 2B, SDA CRS+. The 5th Generation of SDAs saw the introduction of the SL3000 tweeter in the SRS line. The SL3000 tweeter provided a flatter, more accurate frequency response than the SL2000 tweeter. The SL2000 had a +5 dB resonance at 13,000 Hz.
SDAs ceased production in 1991.
NOTE: Information on the early (Gen 1 & Gen 2) Polk SDA models are sketchy and contradictory at best so something like drivers may not match what you have. Case in point the schematic on Club Polk shows the SDA 1 used 4 MW6501's while a manual I found says they used 2 MW7600's & 2 MW7500's also a sales catalog says they used 4 MW6600x's and I've been told they used 3 MW6600x's & 1 MW6501. In the early days as a young company Polk used whatever parts were on hand.


Polk SDA SRS Models Identification
Model:SDA SRS 1.2TL
Tweeter:4 x SL3000
Stereo Driver:4 x MW6503
SDA Driver:4 x MW6511
Bass Radiator:SW150
Crossover:BE2000-C
SDA I. C.:Pin/Blade
Dimensions:13-1/8"D x 21-3/4"W x 63-1/2"H
Shipping Weight:180 lbs. per Cabinet
Notes:
Model:SDA SRS 1.2
Tweeter:4 x SL2000
Stereo Driver:4 x MW6503
SDA Driver:4 x MW6511
Bass Radiator:SW150
Crossover:BE2000-B
SDA I.C.:Pin/Blade
Dimensions:13-1/8"D x 21-3/4"W x 63-1/2"H
Shipping Weight:180 lbs. per Cabinet
Notes: Sometimes referred to as the SDA SRA 1.2A
Model:SDA SRS 1.2
Tweeter:4 x SL2000
Stereo Driver:4 x MW6503
SDA Driver:4 x MW6511
Bass Radiator:SW150
Crossover:BE2000-B
SDA I.C.:Pin/Blade
Dimensions:13-1/8"D x 21-3/4"W x 63-1/2"H
Shipping Weight:180 lbs. per Cabinet
Notes: Transitional model with 13-bolt SDA SRS crossover plate.
Model:SDA SRS
Tweeter:4 x SL2000
Stereo Driver:4 x MW6503
SDA Driver:4 x MW6503
Bass Radiator:SW150
Crossover:BE2000-A
SDA I.C.:blade/Blade
Dimensions:13"D x 21-3/4"W x 63-1/2"H
Shipping Weight:180 lbs. per Cabinet
Notes:
Model:SDA SRS 2.3TL
Tweeter:3 x SL3000
Stereo Driver:4 x MW6510
SDA Driver:2 x MW6510
Bass Radiator:SW155
Crossover:BE2200-C
SDA I.C.:Pin/Blade
Dimensions:13-1/8"D x 20-5/8"W x 55"H
Shipping Weight:141 lbs. per Cabinet
Notes:
Model:SDA SRS 2.3
Tweeter:3 x SL2000
Stereo Driver:2 x MW6511
Sub-Bass Driver:2 x MW6513
SDA Driver:2 x MW6510
Bass Radiator:SW155
CrossoverBE2200-A
SDA I.C.:Pin/Blade
Dimensions:13-1/8"D x 20-5/8"W x 55"H
Shipping Weight:141 lbs. per Cabinet
Notes:
Model:SDA SRS 2 (1987)
Tweeter:2 x SL2000
Stereo Driver:2 x MW6511
SDA Driver:2 x MW6510
Bass Radiator:SW155
Crossover:Single Board
SDA I.C.:Pin/Blade
Dimensions:12-1/4"D x 21"W x 50"H
Shipping Weight:135 lbs. per Cabinet
Notes:
Model:SDA SRS 2 (1986)
Tweeter: x SL2000
Stereo Driver:2 x MW6509
SDA Driver:2 x MW6509
Bass Radiator:SW150
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:12-1/4"D x 21"W x 50"H
Shipping Weight:135 lbs. per Cabinet
Notes:
ModelSDA SRS 3.1TL
Tweeter1 x SL3000
Stereo Driver4 x MW6503
SDA Driver1 x MW6511
Bass RadiatorSW122
CrossoverBE0031-B
SDA I.C.Pin/Blade
Dimensions:13-3/8"D x 15-3/4"W x 48"H
Shipping Weight:101 lbs. per Cabinet
Notes:


Polk SDA 1 Models Identification
Model:SDA 1C (Real Wood)
Tweeter:2 x SL2000
Stereo Driver:2 x MW6511
SDA Driver:2 x MW6510
Bass Radiator:SW120
Crossover:BE1618-B
SDA I.C.:Pin/Blade
Dimensions:11-1/2"D x 16-9/16"W x 44"H
Shipping Weight:100 lbs. per Cabinet
Notes: Has wood end caps with cloth side panels
Model:SDA 1C (Studio)
Tweeter:2 x SL2000
Stereo Driver:2 x MW6511
SDA Driver:2 x MW6510
Bass Radiator:SW120
Crossover:BE1618-B
SDA I.C.:Pin/Blade
Dimensions:11-1/2"D x 15-7/8"W x 43"H
Shipping Weight:85 lbs. per Cabinet
Notes: Has black SDA 1B Style Cabinets.
Model:SDA 1C (Early ones)
Tweeter:2 x SL2000
Stereo Driver:2 x MW6511
SDA Driver:2 x MW6510
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:11-1/2"D x 15-7/8"W x 43"H
Shipping Weight:85 lbs. per Cabinet
Notes: Transitional model with the SDA 1B Style Cabinets.
Model:SDA 1B
Tweeter: x SL2000
Stereo Driver:2 x MW6509
SDA Driver:2 x MW6509
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:11-1/2"D x 15-7/8"W x 43"H
Shipping Weight:85 lbs. per Cabinet
Notes: There maybe a black studio version also.
Model:SDA 1A
Tweeter:2 x SL2000
Stereo Driver:1 x MW6501 or 1 x MW6600x
Bass Driver:2 x MW6501 or 2 x MW6600x
SDA Driver:1 x MW6501 or 1 x MW6600x
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:12"D x 16"W x 43-1/2"H
Shipping Weight:85 lbs. per Cabinet
Notes: The tweeters are side by side.
Model:SDA 1
Tweeter:2 x SL1000
Stereo Driver:1 x MW6501 or 1 x MW6600x
Bass Driver:2 x MW6501 or 2 x MW6600x
SDA Driver:1 x MW6501 or 1 x MW6600x
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:12"D x 16"W x 43-1/2"H
Shipping Weight:85 lbs. per Cabinet
Notes: The tweeters are side by side with no port holes.
Model:SDA 1 Signature Edition
Tweeter:2 x SL1000
Stereo Driver:1 x MW6501 or 1 x MW6600x
Bass Driver:2 x MW6501 or 2 x MW6600x
SDA Driver:1 x MW6501 or 1 x MW6600x
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:12"D x 16"W x 43-1/2"H
Shipping Weight:85 lbs. per Cabinet
Notes: Transitional Model. The tweeters are side by side. Factory modified SDA 1 with crossover changes and blocked port holes.
Model:SDA 1
Tweeter:2 x SL1000
Stereo Driver:1 x MW6501 or 1 x MW6600x
Bass Driver:2 x MW6501 or 2 x MW6600x
SDA Driver:1 x MW6501 or 1 x MW6600x
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:12"D x 16"W x 43-1/2"H
Shipping Weight:85 lbs. per Cabinet
Notes:The tweeters are side by side with port holes.
Model:SDA 1
Tweeter:2 x SL1000
Stereo Driver:1 x MW6501 or 1 x MW6600x
Bass Driver:2 x MW6501 or 2 x MW6600x
SDA Driver:1 x MW6501 or 1 x MW6600x
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:3-prong RTA 12 type
Dimensions:12"D x 16"W x 43-1/2"H
Shipping Weight:85 lbs. per Cabinet
Notes: The tweeters are side by side with port holes. Transitional Model with 3-prong RTA 12 type SDA interconnect cable.


Polk SDA 2 Models Identification
Model:SDA 2B 1989 (Real Wood)
Tweeter:1 x SL2000
Stereo Driver:1 x MW6503 or MW6510
SDA Driver:1 x MW6511
Bass Radiator:SW121
Crossover:BE1807-B
SDA I.C.:Pin/Blade
Dimensions:11-1/2"D x 16-1/2"W x 39-1/2"H
Shipping Weight:80 lbs. per Cabinet
Notes: Has wood end caps with cloth side panels
Model:SDA 2B 1987(Studio)
Tweeter:1 x SL2000
Stereo Driver:1 x MW6503 or MW6510
SDA Driver:1 x MW6511
Bass Radiator:SW121
Crossover:BE1807-B
SDA I.C.:Pin/Blade
Dimensions:11-3/4"D x 15-7/8"W x 38-1/2"H
Shipping Weight:65 lbs. per Cabinet
Notes: Came in black and wood grain vinyl SDA 2A Style Cabinets. Also the early 1987 models had a Blade/blade SDA I.C.
Model:SDA 2A
Tweeter:1 x SL2000
Stereo Driver:1 x MW6510
SDA Driver:1 x MW6510
Bass Radiator:SW121
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:11-3/4"D x 15-7/8"W x 38-1/2"H
Shipping Weight:65 lbs. per Cabinet
Notes:
Model:SDA 2
Tweeter:2 x SL2000
Stereo Driver:1 x MW6501 or MW6600x
Bass Driver:1 x MW6501 or MW6600x
SDA Driver:1 x MW6501 or MW6600x
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:12"D x 16"W x 39-1/2"H
Shipping Weight:80 lbs. per Cabinet
Notes: Tweeters are side by side.
Model:SDA 2
Tweeter:2 x SL1000
Stereo Driver:1 x MW6600x
Bass Driver:1 x MW6600x
SDA Driver:1 x MW6600x
Bass Radiator:SW120
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:12"D x 16"W x 39-1/2"H
Shipping Weight:80 lbs. per Cabinet
Notes: Tweeters are side by side. Transitional Model


Polk SDA CRS+/CRS Models
Model:SDA CRS+ 1989
Tweeter:1 x SL2000
Stereo Driver:1 x MW6510
SDA Driver:1 x MW6511
Bass Radiator:SW102
Crossover:BE1807-B
SDA I.C.:Pin/Blade
Dimensions:10-1/8"D x 20"W x 12-3/4"H
Shipping Weight:35 lbs. per Cabinet
Notes:
Model:SDA CRS+ 1987
Tweeter:1 x SL2000
Stereo Driver:1 x MW6503
SDA Driver:1 x MW6511
Bass Radiator:SW102
Crossover:BE1807-B
SDA I.C.:Pin/Blade
Dimensions:10-1/8"D x 20"W x 12-3/4"H
Shipping Weight:35 lbs. per Cabinet
Notes:
Model:SDA CRS+ 1986
Tweeter:1 x SL2000
Stereo Driver:1 x MW6510
SDA Driver:1 x MW6510
Bass Radiator:SW100
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:10-1/8"D x 20"W x 12-3/4"H
Shipping Weight:35 lbs. per Cabinet
Notes:
Model:SDA CRS
Tweeter:2 x SL2000
Stereo Driver:1 x MW6503
SDA Driver:1 x MW6503
Bass Radiator:SW102
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:9-1/2"D x 20"W x 12-1/2"H
Shipping Weight:35 lbs. per Cabinet
Notes:
Model:SDA CRS
Tweeter:2 x SL1000
Stereo Driver:1 x MW6501 or MW6600x
SDA Driver:1 x MW6501 or MW6600x
Bass Radiator:SW102
Crossover:Dual Board
SDA I.C.:blade/Blade
Dimensions:9-1/2"D x 20"W x 12-1/2"H
Shipping Weight:35 lbs. per Cabinet
Notes:

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