I am looking to repair my Beovox loudspeaker cross-over, and need 15uf (schema) or 16 uF (actual used in the speaker) . The existing caps are bi-polar.
Of course I find several MKP capacitors, 15 uF is easy to find.
but I also stumbled upon MKP motor run capacitors. They have a low equivalent resistance; they have a low loss factor; and they come in 16 uF.
In fact, they can handle quite a current. (Even though I don't need power at my listening level, under 80 dB).
My straightforward question is: can I used these in a cross-over? With their low resistance - at least in the woofer section.
(I use them in my tube amplifier, works great)
Of course I find several MKP capacitors, 15 uF is easy to find.
but I also stumbled upon MKP motor run capacitors. They have a low equivalent resistance; they have a low loss factor; and they come in 16 uF.
In fact, they can handle quite a current. (Even though I don't need power at my listening level, under 80 dB).
My straightforward question is: can I used these in a cross-over? With their low resistance - at least in the woofer section.
(I use them in my tube amplifier, works great)
I've used them in crossovers for years. They work just fine. Mine are mostly Mars brand, but I've tried other without remembering the results. 😉
I've used iCar ecofill - italian brand motor run. You get high quality mkp capacitor, 100uF for less than 10€. The price you pay is size, since they are large.
Hi sser2, could you elaborate on that?
[the cap shoot-outs I saw concerned ‘traditional’ caps . . . So I am filled with ????] 😕
[the cap shoot-outs I saw concerned ‘traditional’ caps . . . So I am filled with ????] 😕
if there is a snubber diode or something in there for motor EMF, they will sound awful when it kicks in.
I would recommend using capacitors applicable to the job in hand.
There is an obvious clue in the name as to the applicability of 'motor run capacitor'. 😉
There is an obvious clue in the name as to the applicability of 'motor run capacitor'. 😉
Perhaps this helps:
https://www.capacitorindustries.com/wp-content/uploads/Run-and-Start-Capacitors.pdf
I've tried well pump capacitors & they worked fine. Of course Audiophiles don't like them since they must be made of some audio oriented material.
https://www.capacitorindustries.com/wp-content/uploads/Run-and-Start-Capacitors.pdf
I've tried well pump capacitors & they worked fine. Of course Audiophiles don't like them since they must be made of some audio oriented material.
It depends on where on the turntable you want to use the motor oil. Not a good example
Do you mean that the cap has to labeled for 'audio" to be used in a speaker crossover?
Are you hinting that they should be lubricated?
Something similar to ferrofluid?
Well, if a certain oil works for any application, try SAE 15W 40 on the tweeter next time ......
Maybe we should use super audiocaps for motor starters. Think of how much the world would improve.
Anyone tried to bypass a large motor run cap with a smaller film like ClarityCap?
I did, but I don't think I hear the difference.
I did, but I don't think I hear the difference.
Yes. I also didn't hear the difference if the film cap was small. I do use them to get a value not available in the motor cap. Fine tuning, you know.
EDIT: I've read and been told that motor caps are "soft on top". That hasn't struck me audibly but I've been meaning to measure it for years. Still haven't gotten around to it.
EDIT: I've read and been told that motor caps are "soft on top". That hasn't struck me audibly but I've been meaning to measure it for years. Still haven't gotten around to it.
I don't have much experience. Now I don't use speaker level crossovers, but when I did, I noticed dull lifeless sound with some (not all) newer metallized polypropylene/vegetable oil capacitors in 2-5 uF range. The badness wasn't subtle, it was right in your face and apparent to lay people. Tweeters were BG Neo-3 and Neo-8. Never had problems with the older Dielectrol (dreaded PCB) or even older foil PIO.