NONE - go active crossover if you're a DIY guy. Because you CAN.
Best Capacitors for Crossovers
I am now in the tweaking stage of trying different caps in my crossovers for my DIY homemade 2 way. I presently have and will soon try a 5.6uf 800 vdc +/- 2% Jantzen Audio Silver Z-cap.
I see that Mundorf, V Cap get a lot of accolades, and the Dueland are quite pricey.
Does anyone have a favorite?
I am trying to cross over at about 4500HZ at 6db.
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"Lustformusic" gave you great information; and that design came courtesy of GREG TIMBERS; a very senior speaker engineer/designer at JBL. A great guy responsible for some of JBL's greatest speakers. From personal experience I can say he is a exceptional gentleman who really cares about music reproduction and customer satisfaction.My hat remains off to Mr. Timbers. |
grannyring, Thanks for the info. I also wired the cap with the tweeters using .9999 silver cable. I know that when I had the Von Schwekert’s speakers as new they sounded pretty tight for about a month. I even ran one out of phase and moved the speakers together face to face for several weeks. I am not too concerned at this time though. I know wire takes at least 200 hours to flesh out and what I am using is all new wiring, caps and speakers. With my Pass Labs amp, I don’t want to play it continuously so it may take a month to fully develop. So, at that time I may experiment further with other caps. |
Nice! Well that tweeter matched with that particular cap will give a very detailed sound that will certainly start off hot sounding. The Jantzen silver cap is known to be very detailed and tipped up in the highs. Even after burn in that personality will prevail. I have had great luck matching ribbon tweeters with copper foil caps from the likes of Jupiter. I had that combo with Raal ribbon tweeters and it was wonderful. I think burn in will be closer to at least 100-150 hours to be honest. |
Grannyring, *The Tweeter that is used = Aurum Cantus G2Si Ribbon Tweeter, 6 ohms. Highlights
http://www.parts-express.com/aurum-cantus-g2si-ribbon-tweeter--276-400 *Capacitor that is used= 5.6uf 800 vdc +/- 2% Jantzen Audio Silver Z-cap. *The Inductor that is used = Jantzen Cross Coil Copper foil .27mh, 99.99 pure copper windings, 14 gauge, 500 watt rms *Woofer that is used = 6.5 inch mid bass/midrangeWoofer. This speaker is rated at 150RMS. It produces solid mid-bass and midrange response. This woofer has an impressive frequency range of 60hz-7000hz.).
Specifications: • Power handling: 150 watts RMS/400 watts max • VCdia: 1" • Impedance: 8 ohms • Frequency response: 60-7,000 Hz • Fs: 94.3 Hz • SPL: 88.5 dB 1W/1m • Vas: 0.15 cu. ft. • Qms: 2.97 • Qes: 1.27 • Qts: 0.89 • Xmax: 6.5 mm • Magnet weight: 30 oz. *No resistors. |
Well, I received a replacement cap this morning, and this time no solder. It works! But, as usual the sound is kinda bright. But there are some very good quality's. It's been quite a while since I have had new woofers, tweeters, crossover, wire etc. Any idea how long it will take for my Frankenstein project to sound it's best before I move on to a different arrangement? I also have seen some breakers designed to reset after an overload event. Are these worth installing before the cap or tweeter? |
Side question: what do you guys recommend for a tweeter protection cap in an active system? Protection for DC on amp turn on, or eventual active crossover malfunction. A good rule of thumb in an active system is the protection should be set two octaves below the tweeter crossover point. For my case, xo is 2000Hz so I'm looking at 500Hz. The calculations show the ideal cap for my tweeter and for 500Hz would be 65uF, which is large and expensive. Several of the top lines mentioned here don't even have caps this large. Since it was only for protection I initially thought a less expensive cap would do. But the whole signal goes through it. What do you recommend? thanks! |
Vaguely, caps are often not rated to withstand more than 200 degree environments, electrolytics and film. Of course there are exceptions, and higher temp caps. Also, this is usually rated lifetime. LIke, 10,000 hours at 105C or something. The cooler they stay, the more life. The hotter, the faster they can die. Using high temp caps also means longer lasting in the same circuit. I think this is very much in the scale of temperature we are talking about. Even low temp solder can’t melt until it reaches 360 degrees or so. So yeah, holding a soldering iron to the leads for a while can really damage a cap. I usually have my iron around 620-650 depending on how much metal has to heat up, BUT.... The time of exposure matters a lot. A quick hot iron can expos parts to less total thermal energy than a slow one, and therefore the internals of the cap will heat up less. Anyway, this is all theory. :) The fact that the cap that failed was in fact exposed as I was worried about kind of explains it in my mind. :) The cap is dead anyway. Try again and make sure you can solder fast. Lesson learned. Best, Erik |
Unlikely you ruined the cap by heat to be honest. It is possible, but my goodness you would have to turn it up to 800 degrees or more and hold it there for a long time. By long I mean over a minute or two. Also, the best sounding resistor I have used is made by Path Audio. I think Parts Connextion sells them. Very good indeed and a tad expensive to be sure. These new CMR caps from Clarity look interesting. Love to know if they sound as musical and lovely as the Duelund and Jupiter copper foils caps? While the V-caps are rated very well I never liked their uber detail and relative thin sounding character. I hope the Clarity CMR cap is not from that sonic camp? |
I should have added, this is the soldering station I use, from Aoyude. Includes various sized tips, which have been a god-send. Cheaper kits don't usually include extra tips. Hakko is the usual standard for soldering stations, but I think Parts Connexion may a knock-off even cheaper. Just make sure you get a variety of tips. But for your testing, I'd really encourage you to stay away from soldering. :) Screw down terminals will be fine. Best, Erik |
I have a 3rd order filter for some of the most revealing tweeters in the world on the way, the Mundorf AMTs. I’ll post when I have them in circuit. They behave practically as if they are massless and are easy to integrate with drivers thanks to a very smooth frequency response and flat impedance above resonance. Best, Erik |
@dgarretson Technically, it is only a conflict of interest when you serve two masters. Promoting your own wares over another may be biased, but not a conflict of interest. :) For instance, if you were being paid by a rag/mag to do "unbiased" research on capacitors, but were also being paid by Clarity, that’s a clear conflict of interest, especially if undisclosed. Best, Erik |
While I admire technology, I believe in results. I can take pretty much any DAC chip, put it on a circuit board and make it sound like garbage. Same for most technology. Beryllium tweeters, AMT, etc. can be implemented well and poorly. I think knowing about the capacitor tech is good, but results are results. And as always, let your own ears be the judge, not me nor a website. Best, Erik |
Thank you all for your opinions and suggestions for web site reviews. They have been very helpful. I will try to obtain some of the caps suggested for comparison. Question: For a tighter connection, I soldered with silver solder silver spades to the cap leads. After everything is connected, one of the caps does not work! Now, I don’t know if the cap was dead from the get-go. But, can the heat from the use of the soldering iron ruin the cap? |
Concerning the new ClarityCap CMR and CSA ranges, it would be a conflict of interest to comment on their performance relative to other brands. However, it seems fair to mention that these models are qualitatively different from other metalized film capacitors with respect to their copper litz end caps. This contrasts with other metalized film caps(e.g. Mundorf, Solen) that use traditional tin-zinc end spray to bridge the metal film layers at the capacitor ends. End sprays atomize and oxidize upon deposition, forming grain boundaries of variable impedance and phase anomalies that worsen with diameter. The performance advantage of a copper end relative to tin-zinc increases with diameter. This particularly favors use in applications involving higher capacitance and larger dimensions as found in crossovers. I just finished replacing 6uf and 17uf MR with CMR in my much-modified Merlin VSMs. This was a big step up. ClarityCap OEM Sales |
Munforf supreme is a good standard ,med vost nice imdging warm natural presentation for a xover for Tweeter Without question I have used many times the Munforf Silver oil.slightly warm and natural.Very good image depth and air . Best value hands down rated very high Is the Audyn True Copper caps. Very large using a lot of Copper foil Big and bold nice and rich, open and excellent image depth Go to Humble homemade hifi capacitor tests .very accurate Tony has helped me several times while living in Europe. How much room also is important. Inductors always loved the Jantzen inductors from Denmark. With resistors Mills are warmer, but for resolution the ohmite gold are very good As are thd Munforf white reference . The best and warm may be the Path audio Made in Poland .the same company that make the Khozmo volume attenuator. Solder very important . WBT,CARDAS,, Mundorf, Johnsons 4% silver very good And a best buy. Wire I use Neotech 0- Crystal Copper Teflon wire . |
Technology before brand. There are two main types of quality caps: metallized, and film-and-foil. The former are cheaper, the latter better: by better, I mean smoother, more refined, more detailed. Dielectric thickness doesn't matter very much, but metal thickness does. Just about anything thick enough to be wound up on a spool is thick enough for sonics, but a deposited conductor is a different matter. Construction is also important. The larger the capacitance, the more the cap can suffer from inductance. MIT Multicap have a connection scheme that minimizes this. Duelund has a flat pack topology which is just about optimal. Polypropylene tends to sound pretty good, but compared to styrene, is dull. PTFE (teflon) sounds a little bright compared to styrene. Styrene is, to my mind, the most neutral of the conventional dielectrics. These are the films. For metal, the best is one which connects easily (usually solders easily). Those are silver, copper, and tin. These are the foils. Now to the brands. I have used many, and MIT are my favourites. Solen f&f are less expensive but less good in my opinion, except for their PTFE f&f, which are as good as anyone's. Relcap makes a good capacitor. For the very best sound, I use MIT RTX series, which is a styrene / tin capacitor. YMMD. Hope that helps. |
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@grannyring Thanks for that. I've been seriously considering the Jupiter line, especially since Soniccraft has them on sale often. I have a pair that sounds very nice, but I am thinking about completely re-doing the crossover design, and Jupiter caps in the tweet would be just the thing. :) Best, Erik |
You might want to try DIYAudio, but in the "affordable" boutique crossovers my favorites so far: Clarity MR (now CMR) Clarity ESA Mundorf MKP Mundorf Supremes Yeah, I list the Supreme’s lowest due to an artificial Disney-like sheen or scintilation. It is NOT natural, you don’t hear it when listening to live music, but if you like it, do it! :) Magico is enamored of the entire Supreme line and why I’m not enamored of Magico. :) Clearly I’m in the minority. Solen’s have been such a mixed bag now I refuse to even look at them. I hear good things from the top line models, but meh, not about to try them. I also like Audyn Truecopper (Bypass values only) The Mundorf MKP is a great upgrade for many, and the prices are hard to beat. |
I highly recommended Jupiter copper foil caps. I prefer them to Duelund and have tried both. Far superior to Mundorf in every way, but most especially in the mids and micro details. The Jupiter cap is very linear with no part of the sound spectrum highlighted. I find the top of the line Mundorfs a tad boosted in the highs. The Duelunds a tad bumped in the upper mids. The Jupiers are so smooooth! |
There is this option, Charge Coupled Crossovers-
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This is the Tweeter I’m using. http://www.parts-express.com/aurum-cantus-g2si-ribbon-tweeter--276-400 Aurum Cantus G2Si Ribbon Tweeter Highlights
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