Not sure which SDA 2 these are.
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johnkalio
Posts: 14
Hello all,
I've been looking for a pair of Polk SDAs any model I could find but not much these days here in Canada. I stumbled on these SDA 2s. I can't tell which ones they are. I attached the pics for more clarity. I know that the tweeter on one has been changed they are pin/blade and no interconnect cable from what the owner's daughter has told me. Not sure if the are desirable either compared to the other models.
I've been looking for a pair of Polk SDAs any model I could find but not much these days here in Canada. I stumbled on these SDA 2s. I can't tell which ones they are. I attached the pics for more clarity. I know that the tweeter on one has been changed they are pin/blade and no interconnect cable from what the owner's daughter has told me. Not sure if the are desirable either compared to the other models.
Post edited by johnkalio on
Comments
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First pic is not the same pair of speakers. Those are 2B's. I believe because of the blade/blade interconnect, the others are 2A.
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SDA2a but the very first picture is of the SDA2b two very different speakers
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First pic is not the same pair of speakers. Those are 2B's. I believe because of the blade/blade interconnect, the others are 2A.
These people are fools. No clue what she has now. Thanks for the reply. -
First pic is not the same pair of speakers. Those are 2B's. I believe because of the blade/blade interconnect, the others are 2A.
Unreal. lol
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First pic is not the same pair of speakers. Those are 2B's. I believe because of the blade/blade interconnect, the others are 2A.
First picture is a mistake sent by her. I will remove it. -
SDA2a but the very first picture is of the SDA2b two very different speakers
First pic is not correct, removed. -
Maybe they work for NASA and they used the same procedure they did on the moon photos lol.George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Crown D150 amp
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
SDA2a. You'll need a good amp to drive them properly. They start at 4ohm and drop to low 3ohm, many receivers will or can go into protection mode driving them. I would NOT use that interconnect cable without the proper spades or switch the connection on the speaker to neutrik connection.
https://www.neutrik.com/en/product/nl2fx -
SDA2a. You'll need a good amp to drive them properly. They start at 4ohm and drop to low 3ohm, many receivers will or can go into protection mode driving them. I would NOT use that interconnect cable without the proper spades or switch the connection on the speaker to neutrik connection.
https://www.neutrik.com/en/product/nl2fx
I have not bought them yet. Doing my homework before I watse my time and money. Do you think they're woth it? If I do get them I have a few Yamaha M80s I'm sure could rock these speakers. -
Hello all,
I've been looking for a pair of Polk SDAs any model I could find but not much these days here in Canada. I stumbled on these SDA 2s. I can't tell which ones they are. I attached the pics for more clarity. I know that the tweeter on one has been changed they are pin/blade and no interconnect cable from what the owner's daughter has told me. Not sure if the are desirable either compared to the other models.
OK please be very clear as to what you are asking
The bold above Pin/Blade model will be a SDA2b very desirable speaker easier to drive at 6ohm.
If they are Blade/blade then those are SDA2a a less desirable and a very demanding speaker as to needing a dedicated amp. The Yamaha M80's were decent amps but very long in the tooth and in need of new caps and possibly other parts on the boards.
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Hello all,
I've been looking for a pair of Polk SDAs any model I could find but not much these days here in Canada. I stumbled on these SDA 2s. I can't tell which ones they are. I attached the pics for more clarity. I know that the tweeter on one has been changed they are pin/blade and no interconnect cable from what the owner's daughter has told me. Not sure if the are desirable either compared to the other models.
OK please be very clear as to what you are asking
The bold above Pin/Blade model will be a SDA2b very desirable speaker easier to drive at 6ohm.
If they are Blade/blade then those are SDA2a a less desirable and a very demanding speaker as to needing a dedicated amp. The Yamaha M80's were decent amps but very long in the tooth and in need of new caps and possibly other parts on the boards.
The pics I posted above are for a pair that I'm looking to buy. I'm not sure if they are 2As or 2Bs. It looks to me pin/blade from the pics, I think. Also would they be desirable as you mentioned if they are indeed 2Bs. -
They are way beyond a shadow of doubt the 2A with the blade/blade SDA cable connections.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
The picture you included of the interconnect socket is of the SDA2a. It is a Blade/blade socket. They are good speakers but need a good amp to function properly long term. Like I said the SDA2a are a 4ohm speaker that drops to the low 3ohm area.
The SDA2b (not pictured) ARE pin/blade. They are 6ohm and are a much better speaker than the SDA2a. (but look very similar in that both have 2 drivers and a tweeter and 12" passive radiator)
The Pin/blade speakers had the socket inside the binding post cup instead of outside the cup like earlier models that had the Blade/blade connection. -
They are way beyond a shadow of doubt the 2A with the blade/blade SDA cable connections.
Thanks for the reply. New to the SDA line. -
The picture you included of the interconnect socket is of the SDA2a. It is a Blade/blade socket. They are good speakers but need a good amp to function properly long term. Like I said the SDA2a are a 4ohm speaker that drops to the low 3ohm area.
The SDA2b (not pictured) ARE pin/blade. They are 6ohm and are a much better speaker than the SDA2a. (but look very similar in that both have 2 drivers and a tweeter and 12" passive radiator)
The Pin/blade speakers had the socket inside the binding post cup instead of outside the cup like earlier models that had the Blade/blade connection.
Thanks for the clarification. My head is in the clouds today. The SDA 2a which I posted are the harder to drive ones. The 2b are easier to drive. -
correct.
I've had the SDA2a speaker. I even recapped the entire crossover. It is a more expensive endeavor due to the cap sizes used in the SDA2a crossover. BUT it can be a very nice set of speakers. What is the price they are asking?
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correct.
I've had the SDA2a speaker. I even recapped the entire crossover. It is a more expensive endeavor due to the cap sizes used in the SDA2a crossover. BUT it can be a very nice set of speakers. What is the price they are asking?
They are asking $300 Can. But wrong tweeter and no interconnect cable. I should offer her $100. -
SDA2a. You'll need a good amp to drive them properly. They start at 4ohm and drop to low 3ohm, many receivers will or can go into protection mode driving them. I would NOT use that interconnect cable without the proper spades or switch the connection on the speaker to neutrik connection.
https://www.neutrik.com/en/product/nl2fx
I have not bought them yet. Doing my homework before I watse my time and money. Do you think they're woth it? If I do get them I have a few Yamaha M80s I'm sure could rock these speakers.
The M80 is a dual mono amp meaning it is not a common ground amp and therefore cannot be used with the SDA 2A.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
I've blown up plenty of amps and receivers over the last 30 years with my sda2a's. They are really nice sounding speakers especially if updated with new rd0194 tweeters and new caps, but they are hard to drive
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SDA2a. You'll need a good amp to drive them properly. They start at 4ohm and drop to low 3ohm, many receivers will or can go into protection mode driving them. I would NOT use that interconnect cable without the proper spades or switch the connection on the speaker to neutrik connection.
https://www.neutrik.com/en/product/nl2fx
I have not bought them yet. Doing my homework before I watse my time and money. Do you think they're woth it? If I do get them I have a few Yamaha M80s I'm sure could rock these speakers.
The M80 is a dual mono amp meaning it is not a common ground amp and therefore cannot be used with the SDA 2A.
You learn something everyday. Sheesh. Now i'm really out of luck. lol -
SDA2a. You'll need a good amp to drive them properly. They start at 4ohm and drop to low 3ohm, many receivers will or can go into protection mode driving them. I would NOT use that interconnect cable without the proper spades or switch the connection on the speaker to neutrik connection.
https://www.neutrik.com/en/product/nl2fx
I have not bought them yet. Doing my homework before I watse my time and money. Do you think they're woth it? If I do get them I have a few Yamaha M80s I'm sure could rock these speakers.
The M80 is a dual mono amp meaning it is not a common ground amp and therefore cannot be used with the SDA 2A.
You learn something everyday. Sheesh. Now i'm really out of luck. lol
The later models with the pin/blade SDA connection can use non-common ground amps with the use of an isolation transformer.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
SDA2a. You'll need a good amp to drive them properly. They start at 4ohm and drop to low 3ohm, many receivers will or can go into protection mode driving them. I would NOT use that interconnect cable without the proper spades or switch the connection on the speaker to neutrik connection.
https://www.neutrik.com/en/product/nl2fx
I have not bought them yet. Doing my homework before I watse my time and money. Do you think they're woth it? If I do get them I have a few Yamaha M80s I'm sure could rock these speakers.
The M80 is a dual mono amp meaning it is not a common ground amp and therefore cannot be used with the SDA 2A.
You learn something everyday. Sheesh. Now i'm really out of luck. lol
The later models with the pin/blade SDA connection can use non-common ground amps with the use of an isolation transformer.
Would I be able to drive any of the smaller SDAs? -
SDA2a. You'll need a good amp to drive them properly. They start at 4ohm and drop to low 3ohm, many receivers will or can go into protection mode driving them. I would NOT use that interconnect cable without the proper spades or switch the connection on the speaker to neutrik connection.
https://www.neutrik.com/en/product/nl2fx
I have not bought them yet. Doing my homework before I watse my time and money. Do you think they're woth it? If I do get them I have a few Yamaha M80s I'm sure could rock these speakers.
The M80 is a dual mono amp meaning it is not a common ground amp and therefore cannot be used with the SDA 2A.
I haven't checked it myself yet, but they say the M80/M85 are common ground amps. -
Who says?
Something I just found....The Yamaha has a good power supply ( TRUE dual mono with individual iron core non-toroidal transformers for each channel ).
True dual mono does not share a common ground.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Who says?
Something I just found....The Yamaha has a good power supply ( TRUE dual mono with individual iron core non-toroidal transformers for each channel ).
True dual mono does not share a common ground.
"The easiest way to see if an amplifier is common-ground and therefore suitable for SDA speakers, is to plug an ohmmeter across the two channel's negative terminals, to measure the resistance" That's how I will check it later on this evening to be sure. -
Yep, better do that.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
