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Old 26th November 2005, 08:26 AM   #1
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Default Bypass caps on crossover caps... :D

I have been trying a few tweaks and changes on my crossovers, one thing I have read about is using bypass caps on the main crossover caps. So, as I had to buy 50 22nf poly caps for my gainclone PSU diodes, I have loads left over so I thought I would try them on my crossovers.

I'm quite frankly stunned at the difference adding these things has made. The improvement in imaging and the extension of the soundstage is astonishing. The character of the sound has changed slightly Ė itís like when I added the zobel to the gainclone Ėthe sound is slightly smoother or maybe more refined (?) without being less detailed or smeared.

I'm sitting with my back to the speakers typing this and it's as if the entire wall behind me is reproducing the music.

I was listening to a piece of music the other day, there was a solo trumpet playing and then 2 others joined in, I could "see" where the other two musicians were sitting!!!

The main caps I'm using are SCR and Mcaps - not the best in the world but reasonably good as I understand it.

What do bypass caps on crossover caps do? Have I made some sort of mistake with the crossovers thatís corrected by the bypass caps?
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Old 26th November 2005, 08:44 AM   #2
AndrewT is offline AndrewT  Scotland
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Hi,
it's more to do with facing away from the sound source.

We have all been listening in the wrong direction all these decades.
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Old 26th November 2005, 08:47 AM   #3
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Quote:
Originally posted by AndrewT
Hi,
it's more to do with facing away from the sound source.

We have all been listening in the wrong direction all these decades.
That's not quite what I meant - that was just an illustration of the difference.

It's the same if I turn round
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Old 26th November 2005, 10:01 AM   #4
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Default Re: Bypass caps on crossover caps... :D

Quote:
Originally posted by quickshift
I have been trying a few tweaks and changes on my crossovers, one thing I have read about is using bypass caps on the main crossover caps. So, as I had to buy 50 22nf poly caps for my gainclone PSU diodes, I have loads left over so I thought I would try them on my crossovers.

I'm quite frankly stunned at the difference adding these things has made. The improvement in imaging and the extension of the soundstage is astonishing. The character of the sound has changed slightly Ė itís like when I added the zobel to the gainclone Ėthe sound is slightly smoother or maybe more refined (?) without being less detailed or smeared.

I'm sitting with my back to the speakers typing this and it's as if the entire wall behind me is reproducing the music.

I was listening to a piece of music the other day, there was a solo trumpet playing and then 2 others joined in, I could "see" where the other two musicians were sitting!!!

The main caps I'm using are SCR and Mcaps - not the best in the world but reasonably good as I understand it.

What do bypass caps on crossover caps do? Have I made some sort of mistake with the crossovers thatís corrected by the bypass caps?

bypass caps on xover caps??

hw u do that.ie have u connected 22nf cap in parallel with each xover cap or is it like u used two 22nf for each xover cap,one leg to gnd and other with xover cap.

please depict it graphically
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Old 26th November 2005, 10:56 AM   #5
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They are connected in parallel, they just piggyback the main caps.

I have also just added some 100nf polys as an experiment but they haven't made any further difference.

I read about it on a site that reviewed various crossover caps - I'm afraid the bookmark is on a PC at work.

Oh yeah - I did listening tests with caps on one speaker at a time, then both, then took the caps off and put them on again. The difference is really very obvious.
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Old 26th November 2005, 11:22 AM   #6
uli is offline uli  Austria
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Vishay 1837 caps have a very good reputation for bypassing, especially 10nF.

Look here: Cap Test

Uli

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Old 26th November 2005, 11:30 AM   #7
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Quote:
Originally posted by uli


Look here: Cap Test


!! That's the site I was reading

I really can't believe the difference about £1 worth of additional caps has made.
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Old 26th November 2005, 11:33 AM   #8
uli is offline uli  Austria
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Tried it after reading Tonyīs pages. WORKS!

Uli

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Old 26th November 2005, 11:53 AM   #9
AndrewT is offline AndrewT  Scotland
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Hi quickshift,
I thought the "sarcastic" and "little devil in me" smilies would show that it was a (not very humerous) joke.
Sorry, I did not intend to wind you up.
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Old 26th November 2005, 11:59 AM   #10
uli is offline uli  Austria
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Default Vishay 1837

Clarifies even Mundorf Supreme...


Uli

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