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Old 5th August 2013, 07:40 PM   #1
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Default looking for mid priced and awesome sounding coupling caps

Looking around for some mid priced coupling caps to roll into my Aikido Pre-amp. I really like the sound of the AuriCaps but their prices have gone up a lot recently. I know that there must be other companies out there that make great sounding caps but don't know what to try. I would like to find something better than Orange Drops and willing to pay about $5 each or so.

So, what else is out there to try and where can I get some?
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Old 5th August 2013, 07:45 PM   #2
udailey is offline udailey  United States
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I cant wait to get flamed for this but I really really like the biploar nichicons. The green ones. I dont hear them when I test with them. For instance this guy
http://www.mouser.com/ProductDetail/...qQcWTVXdSh8%3d
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Old 5th August 2013, 08:38 PM   #3
DF96 is offline DF96  England
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I prefer caps which don't sound at all. Each to their own.
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Old 9th April 2015, 04:03 PM   #4
reuben is offline reuben  United States
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Agreed - I read a comment somewhere stating that compared to other caps, '... these are nothing special.' I knew right away I had found my couplers.

-reub
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Old 9th April 2015, 04:33 PM   #5
AndrewT is offline AndrewT  Scotland
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The first and probably most important rule for coupling caps is that they MUST pass the wanted signal bandwidth.

That leads directly to the next rule.
The coupling cap must not act as a filter to the wanted signal bandwidth.

Now that you know that the filter effect of the capacitor must be outside the wanted signal bandwidth, you need to decide how far away from the signal bandwidth that the filtering effect has become F-3dB.

Add all that together and you now know what value of capacitor is required, then you can select a type to suit the coupling duty and the value.

Do that and implement it.
Now measure the signal voltage across the coupling capacitor.
The closer to zero that voltage, the closer to zero is the distortion added to the signal.
No signal voltage across the coupling capacitor equals no added distortion.

No added distortion meets DF96's rule
Quote:
I prefer caps which don't sound at all.
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Last edited by AndrewT; 9th April 2015 at 04:35 PM.
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Old 9th April 2015, 06:53 PM   #6
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Axial Capacitors from ApexJr
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Old 10th April 2015, 03:14 AM   #7
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Sonicaps Gen I are reasonably priced, compact, and sound very good with realistic tonal balance and clarity, even compared to far more exotic and expensive brands.

Peace,
Tom E
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Old 10th April 2015, 09:16 AM   #8
DF96 is offline DF96  England
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Virtually any cap of the correct value using a suitable dielectric and competent construction will have "realistic tonal balance and clarity". Those that don't are probably faulty, however much they cost.
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Old 13th April 2015, 01:30 AM   #9
AVWERK is offline AVWERK  United States
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If your hearing a cap whether it's awesome or not, you would be better served on the one that you can't hear as this is the most transparent one you need
TRT red E versions seem to fit that bill at not outrageous prices.

Regards
David
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