#41
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Hello Pete,
first and foremost thank you again for your reply and suggestion, sure, I will try and get some foam once I get to Napoli and replace those slices floating therein... Pete I would have liked to contact you privately not to make of your thread my thread but it seems I have not enough permissions to send private messages and as such apologise me if I occupy your space but since I need to work on my crossovers I need your help to find out about caps and resistors to be replaced, actually one of the two speakers sound is not as loud as the other and then the networks job is almost a priority. I found out the unmarked cap on the midrange should be a 3mF one, for all the others I have the values as by the JBL N220 specs, what I miss is the Voltage, some are marked 100V but I didn't look at the big yellow ones (the standing ones to make it simpler to identify them) what their Voltage should be and also what kind of caps should I look for, I am no tech at all, can use a soldering station and a tester but that's almost all... polyester, electrolytic... which ones are the right ones? I know you had to couple two to match the right value for three of them, would you mind sharing which ones and what did you get to reach the right value? Also, do you think resistors is a must-do or could I start with capacitors to bring them back to life and then move on once I get more comfy with the welding iron? Thank you so much Pete and apologise again to rip your space. Have a great week end Giovanni |
#42
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Quote:
I used polypropylene film/foil caps, most were ordered from Parts Express, the ones I couldn't find there in the grade I wanted I ordered from Sonic Craft. The caps I paired were as follows: To achieve the 20uf caps (stand-up caps) I connected (2) 10uf, 800V Metalyzed polypropylene caps together in parallel. To achieve the 6uf, 100V caps (across the terminal strips), I connected (2) 3uf, 200 VDC caps together in parallel. To achieve the 16.5uf (stand-up cap), I connected (1) 15uf, 800V Metalyzed polypropylene foil cap together with (1) 1.5uf, 800V Metalyzed polypropylene cap in parallel. All of the other values I was able to obtain as standard parts from either Parts Express or Sonic Craft. The ones I couldn't find from parts express (at that time) were the 3uf, 200VDC and the 8uf, 200VDC caps, which I ordered from Sonic Craft. You may not need to use more than one supplier, depending on what grade (quality) caps you choose. One supplier may possibly have everything you need. Good luck!
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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 Last edited by Vintage Pete; 01-26-2020 at 02:06 PM. |
#43
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hello everybody, how is it going over there? You might well know what is going on in Italy, we are all stuck, in my personal case our small island is still (...) safe but it so much feels like a golden jail, the forecast is that by March 25th we should (...) reach the peak of infections then we'll see how it goes, at this moment in time I can report that number of recovered patients is higher and higher so let's stay in (ALL OF US YOU INCLUDED) and avoid being in touch with other people, let's preserve our beloved weak ones and, guys, let me tell you, I am that kind of person who can't stand authority at all, never, always had issues at school, during my service in the navy etc but this time I am doing no much effort to respect the rules because things are not gonna be the same so the earliest we solve the issue the soonest we'll start the new cycle. Pete, I pulled down the list of capacitors and, as you stated above, I found out that besides the 2mF and 3mF all the others gotta be parallel to achieve the desired values. I found a few retailers here in the EU and emailed two of them along with the list, a pic of the crossover and one of the JBL schematics and they both reported some of the caps to be electrolytic, in this case they speak about the "smaller" which I suppose being the 2mF, 6mF and 36mF (I thought the 36mF would be big, am I wrong somewhere?). Here one of the email replies: "The 100V capacitors are bi-polar electrolytes. These are usually chosen when the performance of the capacitor is not that critical or if (very) large capacitance values are required (and the costs weigh out the performance). I would suggest to replace only the electrolytes with electrolytes." And here the other one: "So there is a mix of electrolytic bipolar and film caps. The smaller are electrolytic which you should swap for the same type so have a look at these Don`t worry about using the 50V version that is plenty for this application. You may need to use 2 in parallel to get the right capacitance. eg. 36uF - use 33uF and 3.3uF in parallel, the 6uF is more difficult, just use a 5.6uF you really won`t notice the difference. Think about using the Clarity Cap 250V ESAs again you might need to put 2 in parallel to get the value you need." I am a little confused now, Pete I won't want to pollute your thread so if there is a way to connect to you through PM please let me know, I am not allowed here probably because of my early posting history so again accept my apologies for adding more to your beautiful tale. Thank you and be all safe Giovanni Capri - I T A L Y |
#44
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Hi Pete - I just picked up a pair of the L220's and your post has been incredibly helpful.
Two questions - what did you use to replace the 36uF capacitors? Any thoughts on amplification for these big guys? I have some heavy duty Cary tube amps as well as some SS amps that put out pretty big power (Bryston 4B-ST, Nakamichi PA-7AII, etc.). Thanks so much! Andrew Last edited by waryan; 01-04-2022 at 12:33 AM. |
#45
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waryan… Welcome to AA!
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Ivan FLORIDA MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) JL GOTHAM v2 SUBS(2) SILENZIO MUSIC SERVER, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" MOTORIZED SCREEN, CINEMA-TECH SEATING, WW PLATINUM CABLES Reference System: ACCUPHASE A300 AMPS, C3900 PRE-AMP, DP1000 CD/SACD TRANSPORT, DC1000 DIGITAL PROCESSOR, DG-68 DIGITAL EQUALIZER, T1200 FM STEREO TUNER, PS1230 POWER SUPPLY, HRS-SXR CUSTOM RACK w/ M3X SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WW PLATINUM CABLES CAPE COD MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K-01X 30th ANNIVERSARY (BLACK) SACD/CD PLAYER, G02-X CLOCK, HT3F(2) XRT2K, XCS2K, XR27(2) JL GOTHAM v2 SUBS(2) JL FATHOM F113v2 SUBS(4) SOUND ANCHOR STANDS(2) KALEIDESCAPE STRATO & TERRA SERVERS 80-TB, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO MUSIC SERVER, FORTRESS SEATING, WW PLATINUM CABLES Analog Rig: CLEARAUDIO INNOVATION WOOD, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, HRS-MXR REFERENCE RACK-GLOSS BLACK w/ M3X SHELVES, AESTHETIX RHEA SIG PHONO-PRE, BRYSTON BHA-1 HEADPHONE AMP, WW PLATINUM CABLES Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP, 948 POWER CONDITIONER, ACCUPHASE DG-68 VOICING EQUALIZER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, GRANDIOSO P1X/D1X STACK, G1X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO MUSIC SERVER, HRS-SXR CUSTOM RACK w/ M3X SHELVES, SONUS FABER AIDA SPEAKERS, JL FATHOM F113v2 SUBS(2) SOUND ANCHOR STANDS(2) WW PLATINUM CABLES Library System: GRANDIOSO M1 MONOBLOCK AMPS, C1 LINESTAGE PRE-AMP, K1X CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO MUSIC SERVER, AERIAL ACOUSTICS 20T V2, AERIAL SW12 SUBS(2), CANTON REF K1’s, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, KLAUDIO RCM, SHUNYATA DENALI 6000/S v2, SHUNYATA OMEGA QR’s, WW PLATINUM CABLES Esoteric/Bryston System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B3 CUBED MONOBLOCK AMPS(4), BRYSTON BHA-1 HEADPHONE AMP, SHUNYATA DENALI 6000/S v2(2) EVEREST 8000 POWER CONDITIONER(2) ALTAIRA CG & SG HUBS, AMR-DP777-SE DAC, SILENZIO MUSIC SERVER, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WW PLATINUM CABLES Accuphase/Canton System: ACCUPHASE E800 INTEGRATED, DP570 CD/SACD PLAYER, T1200 FM STEREO TUNER, DG-68 VOICING EQUALIZER, PS530 POWER SUPPLY, CANTON REF K3’s, CANTON REF K5’s, SILENZIO MUSIC SERVER, HRS MXR REFERENCE MAHOGHANY RACK w/ M3X2 SHELVES, WW GOLD CABLES |
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