Is that scientifically proven that bypass caps improve the sound , or the sound takes the characteristic of the bypass cap?
Danny from GR research says that but I don’t know if I believe him.
lol
well I did get components to make an external xo and try different things.
tomorrow I will get some 2uf caps to put in parallel with the 16uf I put on the woofer and see how the sound changes.
Danny from GR research says that but I don’t know if I believe him.
lol
well I did get components to make an external xo and try different things.
tomorrow I will get some 2uf caps to put in parallel with the 16uf I put on the woofer and see how the sound changes.
Danny is not the only one who makes such claims.
My source was Australian and his caps saved my projection.
In my situation I could here the difference.
The idea is to go up several levels of quality, hence choosing 0.01uf.
Adding a 2uf to a 16uf Cap in parallel will give you the capacitance you're wanting to experiment with but, may not yield discernible bypass performance.
Usually Bypass Caps are specifically marketed as such.
If you search using "Bypass" at the website I gave you, youll see Bypass Caps listed.
In your case you can have three caps in parallel (18uf, 2uf, & 0.01uf).
You shouldn't use "believe", in your vocabulary.
Much better to have personal experience and then decide.
What brand?
You can check on at that website.
They have dozens of branded reviewed.
If your experiment fails it could end up being a number of reasons, not least the brand of cap you chose.
Yeah I just looked up some literature on bypass caps and most say that they don’t work.
the capacitor with the most capacitance will dictate the the function more.
i am going to put some caps in parallel with the film ones I put in which are 16uf to bring them to 18uf.
I’ll report back on what I hear
the capacitor with the most capacitance will dictate the the function more.
i am going to put some caps in parallel with the film ones I put in which are 16uf to bring them to 18uf.
I’ll report back on what I hear
The best way to determine whether they work is to do your own test.
The one who advises "the capacitor with the most capacitance will dictate the the function more" needs to be specific.
Which function did they mean?
If it was capacitance then I agree.
I used these:
Cornell Dubilier 940C / 0.01uF 500Vac (3,000Vdc) - 10% tolerance.
This is what Humble say about the Cornell Dubilier 940C / 0,01uF / 3000VDC bypass - 10% tolerance:
Sound: Using the 3000VDC Cornell Dubilier 940C as a bypass capacitor in the value 0,01uF really is the "icing on the cake" when you are looking for a low cost bypass capacitor that gell's everything into one coherent sound. Best bang for the buck! Over the years I have used these in many different combinations and everytime they just added more to the overall sound. More coherency and more ease. Especially when you have been "cooking" to find your favourite mix of capacitors and only need to cement the different characters together. Adding the 940C creates an overall more mature sounding speaker. And no, they are not better than the Duelund or VCap bypass capacitors that excel's in naturalness and richness of tone and in transparancy and air. The Duelund and VCap are in another league, not only in sound quality but also in price ;-) Compared to the Jupiter Copper Foil Paper & Wax used as a bypass, the Jupitor is has richer overtones and has a tonally slightly warmer balance. The Vishay MKP1837 used to be my favourite low cost bypass capacitor but now it is the Cornell Dubilier 940C / 0,01uF / 3000VDC. It surpasses the Vishay with quite some margin 🙂
Verdict: use them everywhere possible!
A really good experiment you could do is:
Buy an XLS Encore Speaker kit with the upgrades, build it and do a sound comparo with your ProAcs.
It's the only way to test your doubts and find your path forward in this hobby.
GR Research have a number of videos doing step by step crossover builds.
A great way to learn how to build crossovers.
According to Danny, open baffle design overcomes many sonic issues and can be the future ultimate, but the XLS Encores (with upgrades) is a great start for well designed and specced box speakers.
If you are in the States I recommend the flat pack option as the box shape s critical to the sound.
Things like rounded vertical edges on the front of the boxes has a big impact.
https://gr-research.com/product/x-ls-flatpack-pair/
https://gr-research.com/product/x-ls-encore/
This crossover is for different speaker but great to learn build technique
Matching the parts in a system is important.
Like having a great recording but crap speakers.
Its possible the attributes of the mundorf supreme caps could be choked if other parts/design of ones speakers are below.
Skilled speaker cooks know how to match components, if you know what I mean.
An analogy is like having having a long 2 inch diameter pipe, with a short length of 30 inch diameter pipe in the middle.
The flow will be dictated by the 2 inch restriction.
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I don't recall seeing a previous reference to you having obtained air core inductors, tone?.
I'll be interested in learning more about those and their effect on the sound of your ProAc DT8s.
yeah you and me both.
i would think those would make more of a difference than the caps
but we will see.
today I get the 2uf caps to jump the 16uf and finally figure out that mystery
and thank god it finally cooled down a bit so I can listen to some music
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yeah I’m not getting anything from Danny.
i was just joking
The whole thing of bypass caps from what I researched seems far fetched and a myth
thanks Allen
I actually came across that in my reading.
hey Allen did you check out my measurements I took yesterday of the woofers?
i posted them a few posts ago.
but here they are so you don’t have to go digging
I put a thick piece of memory foam around the drivers I wasn’t measuring.
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Before diving off into money spent on bypass caps, check your hearing. Mine stops at 14 khz no point in spending money on any sound above that. Most males over age 12 are significantly worse than that due to fireworks, firearms, scooters, motor in general, rock bands, excessively loud concerts. I was trained to use earplugs by the Army in 1969 and have done so in all those situations. My damage results from firing the Howitzer at that camp, an experience my draft # would not allow me to avoid.
Bypass caps can improve high frequency response, because big 200-450 v caps are wound. Wound metal has inductance - significant amount. Inductance resists high frequencies, linear with the frequency gain. Smaller capacitors, like 1/10 the value, have less inductance. There have been stacked caps available since ~2005? for switcher power supplies, but not in voltage ratings suitable for 200 w or higher 8 ohm speakers.
Same reason some crossovers have a cap across the level dropping resistor for the tweeter. Big 25 W resistors are wirewound, which has inductance. Bypass cap shorts this inductance, but accentuates the highs, so overall frequency response should be measured. Your speakers advertised frequency response of 38 khz is silly. Humans can't hear that. Mice & cats can.
Ref the charts. I can barely read the legends at the bottom, one color seems to be 100 hz middle color seems to be 20 hz. That is perhaps smoothing function? Also I can't tell if left is paper woofer and right is poly woofer or what, both legends say bottom woofer, IMHO. Anyway that drop at 550 hz and 2.4 khz on the left looks nasty. Somewhat smoothed out by the middle chart, except not a lot of help at 2.4 hz from the middle chart woofer.
Bypass caps can improve high frequency response, because big 200-450 v caps are wound. Wound metal has inductance - significant amount. Inductance resists high frequencies, linear with the frequency gain. Smaller capacitors, like 1/10 the value, have less inductance. There have been stacked caps available since ~2005? for switcher power supplies, but not in voltage ratings suitable for 200 w or higher 8 ohm speakers.
Same reason some crossovers have a cap across the level dropping resistor for the tweeter. Big 25 W resistors are wirewound, which has inductance. Bypass cap shorts this inductance, but accentuates the highs, so overall frequency response should be measured. Your speakers advertised frequency response of 38 khz is silly. Humans can't hear that. Mice & cats can.
Ref the charts. I can barely read the legends at the bottom, one color seems to be 100 hz middle color seems to be 20 hz. That is perhaps smoothing function? Also I can't tell if left is paper woofer and right is poly woofer or what, both legends say bottom woofer, IMHO. Anyway that drop at 550 hz and 2.4 khz on the left looks nasty. Somewhat smoothed out by the middle chart, except not a lot of help at 2.4 hz from the middle chart woofer.
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As long as it didn't cause them a constriction, which would have the potential to affect the other driver through the impedance.