Erse Pulsex caps

blehmbo

Hi, does anyone have experience with Erse Pulsex caps? I havent been able to find much info on them other than that they are used by Thiel and the skiingninja in his budget builds. How do they compare to other caps in their price range (dayton, solen, etc) for the mid range section of a crossover?

http://www.erseaudio.com/Products/PulseX

I am considering Daytons or the Erse caps (if good things are said about them) for the mid-range section of my RTI towers and CSI center. Thanks

mmadden28

BUMP

I was just about to ask that myself but did a quick search and whallaa--you already asked...:)--I hope you don't mind this pseudo thread-jack

I'm ordering some caps for the low pass sections of SDA-SRS 2's, SDA 2Bs and LSi-9's.
As a price comparison example, the LSi-9 low pass needs an 18uF and a 260uF for each speaker:

18uF:
Erse 3% (PulseX) 18uF - $5.10
Dayton 5% (DMPC) 18uF - $5.65
Dayton 1% (PMPC) 18.2uF -$12.97 (10uf @ $7.28 / 8.2uF @ $5.69)

260uF:
Erse 3% (PulseX) 260uF - $67.08 (2x130uF @ $33.54 ea.)
Dayton 5% (DMPC) 260uF - $62.03 (2x100uF @ $23.43 ea. and a 60uF @ $15.17 ea)

For the 260uF, using the Erse would be the slightly more expensive option but it does it with 2 equal value caps vs. 3 unequal values. Or would the end result be just as good by bypassing it with a 1uF Sonicap?
I didn't mention Solens simply because I got the impression that Dayton was preferred and less expensive over the Solens. Let me know if I have the wrong impression.

So for low pass; Erse PulseX vs. Dayton 5% or Erse PulseX vs. Dayton 1%, or does it really not really matter so much in the 'not in the signal path' low pass circuit?

Face

I would use a Sonic Cap for the 18uf. As for the 260uf, you probably wouldn't notice a difference between the Dayton and Erse. If you don't want to go through the trouble of building another board, you could also bypass the 260uf with a 1uf Sonic cap or similar.

ShinAce

mmadden28 wrote: »

BUMP

I was just about to ask that myself but did a quick search and whallaa--you already asked...:)--I hope you don't mind this pseudo thread-jack

I'm ordering some caps for the low pass sections of SDA-SRS 2's, SDA 2Bs and LSi-9's.
As a price comparison example, the LSi-9 low pass needs an 18uF and a 260uF for each speaker:




For the 260uF, using the Erse would be the slightly more expensive option but it does it with 2 equal value caps vs. 3 unequal values. Or would the end result be just as good by bypassing it with a 1uF Sonicap?
I didn't mention Solens simply because I got the impression that Dayton was preferred and less expensive over the Solens. Let me know if I have the wrong impression.

So for low pass; Erse PulseX vs. Dayton 5% or Erse PulseX vs. Dayton 1%, or does it really not really matter so much in the 'not in the signal path' low pass circuit?

Is this 260uF on the woofer? Is it in parallel with the woofer?

If you answered yes to both, I'd say invest that money in a better tweeter or tweeter cap. Upgrading ALL caps is not my cup of tea. The cap used to roll a woofer at 12 dB instead of 6 dB is of very little importance. Upgrade if you want, but a cap with 5% tolerance is probably overkill.

Do whatever you want, but I'm just sayin.

mmadden28

Face wrote: »

I would use a Sonic Cap for the 18uf. As for the 260uf, you probably wouldn't notice a difference between the Dayton and Erse. If you don't want to go through the trouble of building another board, you could also bypass the 260uf with a 1uf Sonic cap or similar.

I don't mind the trouble of building a board or finding a place for the caps-I'm more curious about the differences between the Dayton and Erse caps as to how the compare to each other on the scale of quality (more in general for low pass use than in this particular app), secondly with either/any cap compared to just bypassing with a low value sonicap all as far as the final improvement. Is the difference really that subtle?

ShinAce wrote: »

Is this 260uF on the woofer? Is it in parallel with the woofer?

If you answered yes to both, I'd say invest that money in a better tweeter or tweeter cap. Upgrading ALL caps is not my cup of tea. The cap used to roll a woofer at 12 dB instead of 6 dB is of very little importance. Upgrade if you want, but a cap with 5% tolerance is probably overkill.

Do whatever you want, but I'm just sayin.

Yes and yes-, but I am also curious about the comparisons between the caps, but in my particular example (the LSi9) I already upgraded my high pass caps long ago with Sonicaps and decided then to forego the low pass caps until later for cost reasons (well now its later).
Why would a 5% tol. cap be overkill? The schematic specs the original at 5%--wouldn't I need to remain within the design specs?

ben62670

use 3 90uf caps if you are using the Dayton's. You will only be 10uf over spec, well within the 10%-20% range.

mmadden28

ben62670 wrote: »

use 3 90uf caps if you are using the Dayton's. You will only be 10uf over spec, well within the 10%-20% range.

Ya know I thought about that when I originally thought the range was 10%, I even had it as one of the above options but then I dbl-checked the schematics and saw the tolerance rating as 5% so I dismissed it. Where did you get 10-20% from?

So are you thinking the 3 Dayton 5% 90's over spec would be better than the 2 Erse 3% 130's on spec??

ShinAce

mmadden28 wrote: »

Yes and yes-, but I am also curious about the comparisons between the caps, but in my particular example (the LSi9) I already upgraded my high pass caps long ago with Sonicaps and decided then to forego the low pass caps until later for cost reasons (well now its later).
Why would a 5% tol. cap be overkill? The schematic specs the original at 5%--wouldn't I need to remain within the design specs?

Oh! Ignore everything I said. I thought this was the first mod to a stock LSi.

You are approaching diminishing returns though. You might want to consider saving that 260uF cap money for an active crossover/extra amp.

mmadden28

No need to ignore-I'm open to lots of opinions--Thanks. :cool:

I keep going back on forth on the 260uF about wether its worth doing or or just bypassing.. I just don't want to be potentially missing out on something ya know. Buts really bad right now is when I buy something at the store, like a steak or a flashlight, or even as I fill up my tank--I immediately think, hmmm I could have bought a sonicap or two for that money. :rolleyes:

Poee7R

I've recently used Erse PulseX caps in a xover upgrade in my Acoustat's. I needed to find some large caps, 100 and 150uf, but had a limited sized area to install them, so I couldnt do multiple smaller sized caps. So I decided to try the Erse, really glad I did.

They opened up really nice, I wouldnt call them warm or bright, they just kind of stepped out of the way of the music it seems. Things seem to just sound right, and I wouldnt hesitate to use them again. Around the same time I upgraded some Mon 5jr+ with Sonicaps, and really dig them also, but Id be hard pressed to say the Erse give up much if anything to them.

Go for it.


Dave