Polk Audio SDA SRS 1.2TL Crossover Modification Thread
Comments
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The blue cap is MR, very small value.
Interesting. Tweeter network? I assumed it would be a pop can hence why I never considered. (That and I have a fear that the single cap will cost me 4 bills)Most speakers in the industry are right side positive.
Do you convert the vintage polks or leave them as is? I only ask because I did my plates with Positive on the left. Wanted to keep it old school. -
The cap is like a .22 uf (extremely small) - cost approximately $40.00 - if you were replace the 12uf caps it adds about $1500 on to the price, give or take so it can get pricey quick...
I do *every* speaker that comes through here right side positive, just to be consistent.
There is no right or wrong though, as long as you wire it with the correct polarity..- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
I'm just figuring layout right now, but you get the idea..:cool: -
Watch your inductor placement
Looking good though!
- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
Watch your inductor placement
Looking good though!
The only thing I see is I need to stager the .7 and .4 inductors, and not have them straight across from each other.. -
I would do one vertical, horizontal and flat just to make sure. Better safe than sorry- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
Good idea!!
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I am interesting in seeing our final product, are you going to leave it exposed or put it in a case?- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
I am interesting in seeing our final product, are you going to leave it exposed or put it in a case?
It will go in a case, there will be another piece of delrin underneath this one with the Solen 16mh inductor..
I have a good amount of work to do to get it done.. -
Very nice!
The 6.8uf MR looks odd.. :-P - Looks like a 5 hour energy drink!- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
Very nice!
The 6.8uf MR looks odd.. :-P - Looks like a 5 hour energy drink!
LOL!! I had to get to 13.5 some how.. -
Yeah, I use the 6.8uf as well, never used a 6.8 MR though, hehe- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
Yeah, I use the 6.8uf as well, never used a 6.8 MR though, hehe
Yeah, but if your going overkill, might as well jump over the cliff.. -
This is true.
The big one I am working on the only stipulation to it was "It has to drop in and that's that" so... ya know... - Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
Yeah, but if your going overkill, might as well jump over the cliff..
I am very curious to see and hear these, that's one reason I didn't want to tear down my old crossovers, so I can do some A/B testing, and in the end, I can sell my old set of crossovers, fully hot rodded, plug n play to someone that has been on the fence ,and might not have the skills to do the work.. -
The MR is like the cocaine of speakers...
The true down side to the MR is the burn in, an easy 250 hours before it even achieves 25% of its performance then a switch just goes off. It is the one audio experience to this day that floors me.- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
The MR is like the cocaine of speakers...
The true down side to the MR is the burn in, an easy 250 hours before it even achieves 25% of its performance then a switch just goes off. It is the one audio experience to this day that floors me.
I sure hope your right, as this is the last time I tear down these speakers, all funds from here on out go to new gear.. LOL!! -
"So hot it burns Mice!"~DK
"Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
"Knowledge, without understanding, is a path to failure."~DK
"Those who irrationally rail against something or someone that is no threat to them, actually desire (or desire to be like) the thing or person they are railing against."~DK -
haha
This is even looking way sweeter!- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
DarqueKnight wrote: »sure. Whatever you say.
lol!!! What more could one do after this? MR caps, external crossovers? -
I guess you could maybe go to Duelund caps, $800 or so a piece - better or worse, preference? Hard to say- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
I guess you could maybe go to Duelund caps, $800 or so a piece - better or worse, preference? Hard to say
Ummmm, no thanks!!:cool: I think we can all agree that even pulling the trigger on the MR's for these speakers is over board crazy..
... And add the cost of the Duelund resistors? Yeah I find it a little crazy..:twisted: -
I hear you on that! - Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
Hey Larry!
Why don't you use NL8 connections for your internal wiring if you are going external, or better yet -
- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
Hey Larry!
Why don't you use NL8 connections for your internal wiring if you are going external, or better yet -
I had planed on using the NL's -
Ah, sorry - I saw the Molex on the layout and was curious...
NL8s are incredible! - Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
This is a fun mod! - Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
I feel it needs repeating once more - those caps are enormous!
Great work, Trey.USB Interface: Stello U2, Nuforce uDAC2 ║ DAC: Stello DA100 Signature, Keces DA-151 MK2
Headamp: Darkvoice 336SE, Bottlehead Crack ║ Headphones: Sennheiser HD650, AKG Q701, Audio-Technica ATH-M50
Amplifiers: PS Audio 200CX, DIY Class D Monoblocks, Parasound HCA 1200 II ║ Speakers: Dayton RS621, Focal 807V, LSA1 Statement, Soliloquy 5.3
Power: Yulong P18, Rotel RLC900, Cyberpower 1000VA PFC UPS -
Thanks man! :]
The caps are huge for sure! I can't wait to see the final product!- Not Tom
"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro -
So who is the lucky one that gets them??
