• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Recapping Confusion

Electrically it doesn't make much difference so long as the inductors don't couple (which is why they are often mounted at 90 degrees to each other). Pretty layout is nice, but has no effect on the circuit. Personally I prefer an etched CB for easy of replacement, but none of these are specifically designed for service.
 
They're certainly running lots of films paralleled/bypassed? with electrolytics which seems a bit.. different (at least to me). Maybe just a cheap way to increase capacitance with some of the larger valued caps while also maintaining increased performance somewhat? I know both electrolytics and films are used everywhere in speaker crossovers, and that electrolytics don't necessarily sound "bad" in speaker crossovers. I've just never seen them combined like this before. Seems like a pseudo-enhanced approach.
 
Perhaps there is too much risk involved with messing with those connections. Too easy to inadvertently screw something up, but I believe there are ways to mitigate that problem.
Blue Shadow said:
Must be the ESR is critical in the caps used by JSE
Click to expand...
Wouldn't the ESR be just as liable to drift as the capacitance?
 
onanysunday said:
They're certainly running lots of films paralleled/bypassed? with electrolytics which seems a bit.. different (at least to me). Maybe just a cheap way to increase capacitance with some of the larger valued caps while also maintaining increased performance somewhat? I know both electrolytics and films are used everywhere in speaker crossovers, and that electrolytics don't necessarily sound "bad" in speaker crossovers. I've just never seen them combined like this before. Seems like a pseudo-enhanced approach.
Click to expand...
You see this sometimes when the cost of higher value film caps are much higher than an electrolytic. I have several crossovers where the higher values caps are electrolytic. I just recapped a pair of Ditton's that had 5 electrolytic caps per crossover. One was 60uf. I found one on closeout for just under $5. They are sold everywhere else for $47 to $55. If I hadn't found that one I would have used a lytic. Plus the size for higher value film caps are huge. And the only reason I replaced the original caps was due to several texting out of spec.
The 60uf cap I found was almost as big around as a beer can and half as tall.
I had to glue it to the bottom and back of the cabinet.
 
Guido57 said:
Perhaps there is too much risk involved with messing with those connections. Too easy to inadvertently screw something up, but I believe there are ways to mitigate that problem.
Click to expand...

BINGO....I know I wouldn't want to work on that rat's nest.

Wouldn't the ESR be just as liable to drift as the capacitance?
Click to expand...

Even more so and most folks don't have a way to test that.
 
Lavane said:
You see this sometimes when the cost of higher value film caps are much higher than an electrolytic. I have several crossovers where the higher values caps are electrolytic. I just recapped a pair of Ditton's that had 5 electrolytic caps per crossover. One was 60uf. I found one on closeout for just under $5. They are sold everywhere else for $47 to $55. If I hadn't found that one I would have used a lytic. Plus the size for higher value film caps are huge. And the only reason I replaced the original caps was due to several texting out of spec.
The 60uf cap I found was almost as big around as a beer can and half as tall.
I had to glue it to the bottom and back of the cabinet.
Click to expand...

I know what you mean, the larger uf sizes can be absolutely huge and expensive. Here I used a potted polycarbonate to replace one electrolytic, and for the other, combined two of those cheap, 30uf TI polypropylenes to make a 60uf cap on a recent Rectilinear III crossover recap. Not the easiest (or prettiest) task necessarily but after some careful listening with some other alternatives I tried using, sounds awesome with some low value polystyrenes added as bypass caps and some hot glue to hold it all in place.

20200423_105336.jpg
 
Last edited:
baco99 said:
everything is relative. One of those Duelund caps costs more than an entire pair of JSE 1.8. Just saying.
Click to expand...

My point in posting that picture has nothing to do with the quality of the components, it's about the quality of the layout and workmanship.
 
baco99 said:
Exactly

Look into VMPS crossovers. Those are a total mess.

Some Apogee speakers don't look much different on the inside.


Ever opened up a set of Nolas?

35884573975_649ea68262_b.jpg



Snell C for reference

29917710088_65ba5203eb_b.jpg



Sjöfn "The Clue" crossovers have the components glued right the rear of the baffle. (sometimes incorrectly, I might add....)

41429249894_432848ce75_b.jpg



And here's what JSE Model 2 look like for posterity. Absolutely beautiful sounds those speakers made.

34974913226_27b182a1b6_b.jpg


35014974785_fb51ae070b_b.jpg


43912826221_e21058c948_b.jpg
Click to expand...
Was that my Snell Type C crossover you did? You should have shown the picture of what you did to it
 
You must log in or register to reply here.
Back
Top Bottom