Before and after....
Little green meanies added!
0.005 Russian military polystyrene caps....not sure if these will make any difference, but at least I have bragging rights!
Have only added them to one crossover to see if I can perceive any difference, had to buy a whole bunch of these so if anyone is interested in any please pm me :thmbsp:
I personally find it USUALLY takes about five different value film caps, or more, to act as a linear bypass bundle, and to get bypassing done properly in any one capacitor position in a circuit. So, it becomes a question first, of what values to use, and second, finding caps that bypass with each other without serious " fighting" between the caps of different values.
Done properly, I find it highly advantageous. You will have to teach yourselves, what values effects what part of the spectrum, and use good judgement.
A single ended tube amp, unlike a push pull tube amp, also REQUIRES such multiple film cap bypassing, in every capacitor position in the circuit, if you expect it to provide more than the typical midrange-only ( narrow band ) SET playback. I find 99% of the SETs flunk, get a F-, in playing the highs well.
Jeff Medwin
North Creek Music (now shut down) was the big proponent of cascading bypass caps. The reason being they sold those caps they were promoting. Their arguments sounded so convincing. If you visit the Lansing Heritage tech pages you find JBL engineers were some of the first to use a single bypass caps in a number of loudspeaker designs. JBL didn't cascade.I've read that cascaded bypass capacitors are supposed to sound better than a single bypass capacitor. But, like a single bypass, I don't know why they improve the sound. I just think it does. Another thing, with cascaded bypass caps, aren't each capacitor required to be different values from each other, plus as additional bypass caps are added, each needs to be a higher voltage too?
Also, I've been discussing the topic of bypass capacitors with friends. Mainly, if they do benefit the circuit, and improve sound quality? We're all AR fans, and have been doing recaps, and were confused if bypass capacitors should be utilized? So, I'm trying them (Auricaps on tweeters, Mundorf Supremes on mids, and Dayton F&F on bass and shunt caps). My friends did too, though one was somewhat reluctant. But, the interesting thing was, when the reluctant friend finally added bypass caps, he did one speaker at a time, and compared to the standard recapped speaker. He liked what he heard, but felt the speakers weren't as 'bright' afterwards. Further listening revealed that the bypassed speaker was actually smoother sounding and offered better detail. Less spitty too. Another interesting thing, my fried measured ESR before and after adding the bypass caps, and the ESR values didn't change. The differences in sound couldn't be attributed to ESR shifts. So, maybe there is something to it after all?
What bypass caps value did your friend use? Also, what value cap was he bypassing?
You mentioned he bypassed a Dayton 1% poly but didn't state the uF value for that cap. That is what I was asking for. Thanks in advance.He tried 0.01uF's, both Dayton F&F and Vishay, on a Dayton 1% poly. He seemed to liked both equally well, after listening tests.
You mentioned he bypassed a Dayton 1% poly but didn't state the uF value for that cap. That is what I was asking for. Thanks in advance.
A 0.01 uF bypass on a 4 uF cap makes sense. There's another bypass thread on pg one of this forum. IIRC, the OP wants to bypass a 10 uF EPI speaker cap with a 0.01 uF also but was asking about comparison of Dayton FF and Theta FF. For a 10 uF cap, I'd recommend a 0.1 uF bypass cap.