SDA's whats the diff between the TL and non TL ones
EndersShadow
Posts: 17,596
Don't know what the diff is and couldn't find anything initially on googles search of the forum (or Treys website either). I dont need specifics about the driver numbers and tweeter model numbers, ect just what the overall sound differences are, speaker layout differences, if the SDA effect is different, ect.
I know folks prefer the TL models over the stock and trying to figure out why.
Thanks in advance fellas!
I know folks prefer the TL models over the stock and trying to figure out why.
Thanks in advance fellas!
"....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
Post edited by EndersShadow on
Comments
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I like the tweeter sl3000/rdo-198 better than the sl2000/rdo-194.
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Crossover design and tweeters used as leroy stated above. The latter would be from non-TL models.
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SDA output is derived from the midwoofers rather than the tweeters, except for on a couple of the earliest models that used a dimensional tweeter.
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SDA output is derived from the midwoofers rather than the tweeters, except for on a couple of the earliest models that used a dimensional tweeter.
Hold the phone...I was told I have dimensional tweeters and I know the woofers are dimensional. Could you give a little more detail as to what you mean here? It is almost as if you are saying one or the other except for in early models?Too much **** to list.... -
The very early models had a stereo tweeter and a SDA tweeter mounted basically side by side. In refining the SDA line Polk found that the SDA tweeter wasn't needed.
I take it you have 1C's, in which case you do not have a SDA tweeter.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 know folks prefer the TL models over the stock and trying to figure out why.
The TL models are more refined.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 -
Yes, 1c's. CS said the schematic shows a dimensional tweet...you say otherwise. SI the Xover freq different What do you mean by refined? different silk?Too much **** to list....
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Do your speakers have tweeters arranged vertically or side by side?2 Channel - Polk SDA-2BTL, Carver TFM-35, Peachtree iDAC, Qobuz streamed via Episode Lynk using bubble UPnP server
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The schematics are posted here, look for yourself. 1C's do not have a dimensional tweeter.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 -
Looks to me that the bottom tweeter is dimensional on the 1C in drawing number P0131003. At very least it definitely has extra circuitry post the 750 silver and the 12 mylar. Did production numbers dictate what speakers were produced prior to Amendment A or was that done prior to the final approved manufacturing drawing? Either way, it looks like nothing more than a poly switch so I don't suppose that would much affect on the tweeters differently, aside from the small change in effect on the values post the 750pf/12uf caps. Surely that small difference was calculated into the dimensional effect.
If the additional circuitry and components isn't for a dimensional tweeter what is the purpose for it's existence?Too much **** to list.... -
The two 1C tweeters do not put out the same frequencies as each other, but they are in parallel with each other. They are not out of phase with each other and are not feeding off the SDA interconnect. As F1nut says, just have a look at the schematic. On the 1C, you can see from the schematic tha the 6510's are the only dimensional drivers.Good music, a good source, and good power can make SDA's sing. Tubes make them dance.
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Ahh. They are different in frequency but not dimensional. Thanks for the clarification.Too much **** to list....
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If the additional circuitry and components isn't for a dimensional tweeter what is the purpose for it's existence?
It's called a progressive point source as Neil alluded to.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 -
Jesse, here's a question for you. Off topic, but quasi-related and probably not worthy of it's own thread. The 1C's and the 2B/CRS+ both use the same drivers, 6510's and 6511's. But on the 1C, the 6510's are dimensional and the 6511's are stereo. It's the opposite on the 2B/CRS+. Any idea why? What makes the driver appropriate for one use versus the other, and why the variance between the speakers?Good music, a good source, and good power can make SDA's sing. Tubes make them dance.
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You'd have to ask Polk's engineering department.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
