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#1
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If anyone is thinking about re-capping some crossovers,..
Guys,
Here are a couple of links from my local Audio Club regarding capacitors. Re capping older crossovers can bring them back to life. I did it on a pair of ADS speakers I had, and it made a world of difference. Capacitor tests - Humble Homemade Hifi The Sound of Capacitors - Capacitor Sounds, Speaker Cables and Crossover Inductors.
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Chuck McIntosh, PMC, Bryston, Olive, Rega, Ortofon 2M Black, JL Audio, PS Audio, Alan Maher, Aural Harmony, Black Mountain, Wireworld, Symposium, DIY amp switch box, P Millett DIY headphone amp. [SIGPIC][/SIGPIC] |
#2
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Chuck.......Thanks for the info. I have been giving some thought to recapping the crossovers in my JBL4312A speakers.
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Dan STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A Last edited by jdandy; 06-23-2009 at 06:23 PM. |
#3
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Never.
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#4
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Quote:
The description in the link is very accurate. Mundorf M-Cap Supreme Silver/Oil MKP 1200VDC – 2% tolerance (typ. 1%) Technical specifications: An oil impregnated metallised paper dielectric capacitor, with the same series wiring as the Mundorf M-Cap-Supreme capacitors. The winding technology enables the production of induction-free capacitors. As the name indicates, high-purity silver is used for the capacitor coating, and the winding is impregnated with special oil developed in an exhaustive series of experiments and listening tests. The metallised paper foils make it possible to maintain extremely exacting production tolerances that cannot be achieved with traditional oil/paper capacitor designs. This is also the first time that the benefits of oil-impregnated capacitor design have been successfully combined with the well-known long-term stability of metallised paper and internal series wiring for induction-free performance. These low manufacturing tolerances is one of the key reasons for the wonderfully spacious music reproduction achieved with these capacitors: Perfect stereo is only possible when the performance of the left and right channels is virtually identical. The long-term capacitance stability of these products is equally important, of course. Without it there is no way to achieve really constant performance – not even with capacitors selected as matched pairs.” Sound: The M-CAP Supreme Silver/Oil is one of my favourite capacitors! I can only underline what Mundorf states: “…wonderfully spacious and detailed sound reproduction … full and smooth tonal richness and diversity. This capacitor’s ability to bring out the finest nuances and the subtlest distinctions make the music sound more alive and “juicy”, …Wonderfully spacious music reproduction… ”. Music detail and depth throughout from top to bottom. Very smooth and liquid. To exaggerate things: it makes a standard Supreme Cap sound slightly rough! Verdict: 10,5 |
#5
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Face,
Is that your handy work?
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Chuck McIntosh, PMC, Bryston, Olive, Rega, Ortofon 2M Black, JL Audio, PS Audio, Alan Maher, Aural Harmony, Black Mountain, Wireworld, Symposium, DIY amp switch box, P Millett DIY headphone amp. [SIGPIC][/SIGPIC] |
#6
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Quote:
I am also skittish as many of the caps in the the L220A's are cemented down to the board with a waxy-like glue, and much of the wiring is point to point. Dan...whattaya think? Do you think your 4312A's performance has deteriorated significantly over the years? Pete
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Pete No. 35 Main System: VPI Prime Signature TT in Rosewood, Ortofon Cadenza Black, Stillpoints LP1 V2, McIntosh: MP100, MR78, MCD1000 Transport on Stillpoint Ultra Minis, MDA1000 D/A Converter on Stillpoint Ultra Minis, MS750 Music Server, C40, MC501's (3), Soundcraftsmen: DC2215 Eq/AS1000 Real time analyzer, DBX 3BX II, Carver C9, Nakamichi Dragon, Crown SX724, Crown D-75A (as headphone amp), Sony XBR55X900E 4K TV, JBL L220A's, JBL B460, Sumo Delilah active crossover, WireWorld Silver Eclipse audio interconnects, WireWorld Starlight and Silver Starlight Coaxial Digital interconnects, Wireworld SuperNova 7 Toslink digital interconnect, WireWorld Aurora 7 and Silver Electra Power cords, Wireworld Silver Eclipse 8 speaker cables, Terk AF-1 Powered Antenna, Oppo UDP-205 4K Blu-Ray Player, Bryson BUC-1 USB Converter, Wireworld Gold Starlight XLR Digital interconnect, PS Audio Direct Stream Power Plant 12 on Stillpoint Ultra Minis, PS Audio Dectect, FuruTech Flux-50 NCF Inline Power Filter, Add-Powr Wizard EM Field AC Line conditioner; Stillpoint Ultra SS's under (3) McIntosh MC501 Amplifiers Florida Room/Art Studio System: Harmon Kardon T60 TT/Ortofon 2M Black, McIntosh: MR77, C32, MC2205; Crown Power Line Four, Wyred for Sound DAC-2 Digital to Analog converter, Soundcraftsmen AE2000 Eq, JBL 4313B's, JBL 2241-based Sub, JBL BX63A Active Crossover, Oppo BDP-105D Blu-Ray Player, Samsung 5500 Series 32" Smart TV, Terk AF-1 Powered Antenna Master Bedroom System: McIntosh: MX120 Theater processor, MC206 6-channel amplifier; MR74 AM/FM Tuner, Oppo UDP-203 4K Blu-ray player, JVC HM-DH40000U D-Theater Digital VHS, Phase Technology PC80 Towers (now used as stands), (2) JBL 4401's, (1) JBL Studio 6IW speaker, (2) JBL Studio 6IC speakers, Sony XBR-49X900E UHD TV, Panamax 1000 Line Conditioner, (2) JL Audio E110 Subwoofers, Wireworld Solstice speaker cables, Wireworld Aurora Power cords, Wireworld Equinox and Solstice speaker cables and various other flavors of Wireworld and Audioquest cabling Office System: Marantz 150 Tuner, Crown DL 2, Crown EQ 2, Crown SA 2, Crown D-75A (as headphone amp), McIntosh MCD7009 (as transport), DBX 3BX Series II, Oppo BDP-103 Blu-ray player, JBL 4401's, JL Audio E112 Subwoofer, Samsung 5500 series 32" Smart TV, Wire World Oasis audio interconnects, Wire World Solstice speaker cables, Wyred for Sound DAC-2 DSDse Digital to Analog converter, Wireworld Starlight Coaxial Digital Interconnect, Sennheiser HD800 Headphones, Sennheiser HDVA600 Headphone amp, Wireworld Silver Eclipse Balanced Interconnects, Wireworld Platinum Starlight USB Cable, Add-Powr EAU-2 AC Harmonic resonator High Resolution Source: HP Omen 17" Gaming Laptop |
#7
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Pete.......It is difficult to say. I bought them new 20 years ago, and enjoyed them a great deal during those years, but they have not been the only speakers I have listened to, so I don't really have a permanent imprint of their sound from then until now. The 4312A's still sound good, and still handle power well, although they are only powered with the MA5100 integrated amp right now (45 Watts per channel). The midrange and tweeter pots still funtion properly with no intermittent spots. I just think that after 20 years the capacitors could probably stand to be refreshed with new ones, and perhaps of a higher quality. I'm still thinking about it.
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Dan STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A |
#8
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MC352, yes those are mine.
The first one is for my Tannoy HPD-385A's, second a friend's Polk LSi15's, and the third mess is for a pair of custom speakers I designed. I can't wait to button them up and finish the cabinets. As for recapping, electrolytic values drift after 10-20 years, also the best electrolytic won't sound as good as a cheap film cap. Recapping can make a night or day difference, depending on what was used in the speaker originally, how old the components are, how revealing the speakers are, and the quality of the components used in the rebuild. For basic builds or large values, Dayton film caps are the best bang for the buck. From there I would recommend Sonic Caps for some speakers, Obbligato, and Claritycap MR or Duelund for the high end. Claritycap MR's throw the biggest soundstage and sharpest imaging I've ever heard, but they don't work with every speaker. They can sound a little sharp with metal drivers. Duelund VSF is the best for tonality, but don't image as well as MR's. I'm going to try a pair of Duelund CAST caps soon. But in the meantime, I'm going to try parallel a pair of MR's and VSF's and see if I can get the best of both worlds. If you like the sound of Mundorf S/O, you'll probably like Obbligato copper or gold caps. IMO, they sound better and they're also cheaper. The only downside is that they don't have a great selection of values. |
#9
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__________________
Chuck McIntosh, PMC, Bryston, Olive, Rega, Ortofon 2M Black, JL Audio, PS Audio, Alan Maher, Aural Harmony, Black Mountain, Wireworld, Symposium, DIY amp switch box, P Millett DIY headphone amp. [SIGPIC][/SIGPIC] |
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