My 2024 Polk SDA 2b Modification Progress Thread (Drop1)
Comments
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The original gaskets are better. They are supposed to be ultra thin.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 original gaskets are better. They are supposed to be ultra thin.
I know, I know. I ripped the original gaskets out long ago. I'm of two minds but I lean in your direction. The armacell armaflex is seemingly sufficient but it does seem a bit thick. I don't like the idea of overtightening the screws for the sake getting extra compression in the gasket and coupling the woofer to the cabinet. However the cabinets will most certainly be sealed and I don't imagine I'll have any issues with SQ or otherwise.Post edited by drop1 on -
Moretite is the best...Gustard X26 Pro DAC
Belles 21A Pre modded with Mundorf Supreme caps
B&K M200 Sonata monoblocks refreshed and upgraded
Polk SDA 1C's modded / 1000Va Dreadnaught
Wireworld Silver Eclipse IC's and speaker cables
Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)
There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus -
Shut it!Moretite is the best...The original gaskets are better. They are supposed to be ultra thin.
The armacell armaflex is seemingly sufficient but it does seem a bit thick. I don't like the idea of overtightening the screws for the sake getting extra compression in the gasket and coupling the woofer to the cabinet. However the cabinets will most certainly be sealed.
The Armacell will flatten out easily. Simply once a month turn the screws a little. It will get to be as thin as the original gaskets. It works very good.
You may know this but it is worth mentioning for others. On the woofers and passive, overlap the Armacell then cut on the diagonal so to not have a straight line front to back of the gasket area. This will make sure you do not develop a air leak.
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@pitdogg2 you are absolutely right. I attached the drivers after applying the armaflex and tightened them down. After just a few hours the screws had already backed out just a tad. I removed the drivers after a day and was very surprised to see how much armacel compressed. I no longer see any issue using the armaflex.
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a little progress this weekend.
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Looking nice!
You're reminding me that I've got a set of inductors that have been waiting to be installed in my 2BTL's for... well, let's just say I've had them for a while.
Have fun!Jay
SDA 2BTL * McCormack DNA 0.5 amp * Oppo BDP-93 * Modded Adcom GDA-600 DAC * Rythmik F8 (x2)
Micro Seiki DQ-50 * Hagerman Cornet 2 Phono * A hodgepodge of cabling * Belkin PF60
Preamp rotation: Krell KSL (SCompRacer recapped) * Manley Shrimp * PS Audio 5.0 -
^ I hear ya, still haven't installed the resistors & caps in my SDA SRS's.
They've been sitting here looking at me, nagging, for about a year now..... -
That's why I opted to get everything done all at once. It's a lot but I deffintately wouldn't want to be in and out of here at any point once I'm done with this. I begrudgingly finished the inductor mount last night and drilled holes in the cabinets, simply because I already had everything out and ready to get it done.
I just hope my B&K Reference 200.2 can handle the lower impedance with the new inductor. Otherwise I'll have to swap back to the old inductor. -
I've pushed sda with the c coil using a 50 dollar pioneer receiver
Should be good!- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit. -
ok, good- appreciate the clarification!
