NOSValves Posted March 2, 2002 Share Posted March 2, 2002 I feel great I just did my first HiFi solder swinging and I don't mind saying I'm Proud of how it turned out. It was actually real easy. The hardest part is getting the Old caps out. I'm picky and didn't want to just clips them and solder the new one's on the surface. I desoldered and installed like the factory did when it was new. I still have to change all the small ones on the control pots which will be slightly harder !! I except "Pats on the back" Before After Hope Comcast web hosting works better than there Email has since Excite took a dump LOL !!!!! This message has been edited by NOS440 on 03-02-2002 at 03:58 PM Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 2, 2002 Author Share Posted March 2, 2002 It works cool. I need to find time to put up a web page again !!!! Quote Link to comment Share on other sites More sharing options...
SOUNDJUNKIE Posted March 2, 2002 Share Posted March 2, 2002 You went for that on your first attempt at parts swap?! BRAVE SOUL! Quote Link to comment Share on other sites More sharing options...
Deang Posted March 2, 2002 Share Posted March 2, 2002 impressive (pat). very cool (pat pat) ------------------ deanG Quote Link to comment Share on other sites More sharing options...
Allan Songer Posted March 2, 2002 Share Posted March 2, 2002 Wow! I am pretty sure that most of those originals were just fine, but as an exercise I guess it was a fine project. Does the amp sound different now? I tend to replace parts when I hear an obvious problem--I am far too lazy to spend an entire day with a soldering iron in my hand unless forced to! Excellent job, by the way! Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted March 2, 2002 Share Posted March 2, 2002 Excellent job! Great! Are those the 716P or the 715? Either way, they will take a while to form so get breaking that beast in! Good work. Quite a clean job. kh Quote Link to comment Share on other sites More sharing options...
mike stehr Posted March 2, 2002 Share Posted March 2, 2002 Looks like you got Soldering down now! Powered by Sprague! Were the old caps bad? Good job, BTW!!! Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 2, 2002 Author Share Posted March 2, 2002 Allan I find Soldering fun I love to tinker !! Mobile I went all out there 716P's like you recommended and so did Mdeneen. The thing is after letting them settle in I'm going to just pull about half of them back out to do a Bass Mod the Mdeneen designed for me. But hey a reference point is important. Thanks for all the Pats on the back. I really enjoyed doing it. I haven't hooked it to my main Klipsch system yet. But It does have a tighter sound using my Fisher speakers. My other Scott has been on all day and I'll be hooking the 222c to compare soon. As far as the old one being bad. I know none of them had shorts or Open but I'm sure they had varied from spec. The voltages are now dead on exact at all these spots and before they varied slightly. I'll report back later with how it sounds now. Trying to search down the parts for the Tight base mod. Where the hell can I get a 50uf 475V Electrolytic Cap Mdeneen said LCR brand who the hell sells those ?? He said mouser but I can't find it on there Website. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 2, 2002 Author Share Posted March 2, 2002 SOUNDJUNKIE I did this a few at a time and checked to make sure it still worked. I'm not that brave. I've done Allot of soldering wiring my Race car before so this isn't that new to me. So I'm not that brave !!! It took me 3 day's to get the guts to tear apart a perfectly good working Amp. Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted March 2, 2002 Share Posted March 2, 2002 Tight Bass mod? Heh...olde mdeneen. Try Angela at this link below. I would go ahead and go with 500v here as it's an easier one to source. http://www.angela.com/catalog/capacitors kh ps Are these radial lead going on the TOP of the chassis or are they axial lead inside? This message has been edited by mobile homeless on 03-02-2002 at 07:42 PM Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 2, 2002 Author Share Posted March 2, 2002 I hoping for Axial lead single Cap. Just listened to my first song with the new Caps on my Sf-2 with KSW-15 sub. My first impression is that its much crisper than it was before. The bass seems already tighter I just turned the Sub up a couple notches it would turn flabby at this setting before. But this is just one song Hotel CA by the eagles. Time will tell the real truth about the new caps !!! Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 2, 2002 Author Share Posted March 2, 2002 Closest I could find there was 40uf 500V sprague. I wish I could find one place to buy all this stuff from. Tubesandmore.com has most of what I need. Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted March 2, 2002 Share Posted March 2, 2002 Here is a Scott 299 with the LCR done on top in the radial can style. LCR are not longer made but you can still find them. The Sprague ATOM at 500V would be a good choice for the axial lead cap. Not sure what they were stock on your amp. 40uf is probably a big step up as well. What was the stock again? kh Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 2, 2002 Author Share Posted March 2, 2002 Mobile were not changing a El Cap were adding a single lead cap under the chassis. All my can Caps are working fine no need to change them. This is just a mod to help the Base tighten up. Craig Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 2, 2002 Author Share Posted March 2, 2002 That must be a 299C or D with 7591s. Looks nice !! Who's is it ?? Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted March 3, 2002 Share Posted March 3, 2002 Well, as far as I know, LCR is not made anymore and what usually IS available is the radial can type as seen on top of your chassis. The Sprague ATOM at 40uF 500V is one of the only axial options at that high a voltage. Most stop at 450. You can always put a radial under there if you can fit it. Also, even better would be a Solen but I doubt it would fit. Are you ADDING another cap or replacing one? kh ------------------ Phono Linn LP-12 Vahalla / Linn Basic Plus / Sumiko Blue Point CD Player Rega Planet Preamp Cary Audio SLP-70 w/Phono Modified Amplifier Welborne Labs 2A3 Moondog Monoblocks Cable DIYCable Superlative / Twisted Cross Connect Speaker 1977 Klipsch Cornwall I w/Alnico & Type B Crossover system one online / alternate components / Asylum Listing f>s> Quote Link to comment Share on other sites More sharing options...
NOSValves Posted March 3, 2002 Author Share Posted March 3, 2002 Mobile We are going to add one cap in the Center tap of the Output tranformers, Also changing 8 Coupling Cap Value's in the sound Path. Mdeneen thought this would tighten the Bass and its cheap and a easy mods. We have a few other mods that I'm considering that vary in there difficulty. The amp does sound slighty different with the new Caps. Tighter and more detailed I was listening to some Pink Floyd last night and it sounded so good. I thought I was 18 again and smoking that Wacky Tabacky LOL !!!! Craig Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted March 3, 2002 Share Posted March 3, 2002 I would go easy on increasing the coupling cap values not jumping to high over the stock. This used to be thought of as a great way to get bass but if overdone, can slow the amp down. I used to do this a lot but have backed off on it. Im sure mdeneen is not making too high a jump here, though. The 716P should sound more clear and open than the stock, perhaps quieter although I couldnt tell what you had in there before; it surely wasnt ceramic discs like you see on a lot of units. What were the old caps you removed? They actually didnt look that bad from afar. kh Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted March 3, 2002 Share Posted March 3, 2002 Actually, I thought I was discussing the coupling caps and not the addition to the B+ capacitance. In relation to the PS cap, most LCR I know of that are high voltage are RADIAL mount. When I asked Craig if he was looking for axial leads or radial, he replied Axial, hence, I said most LCR are radial and larger. OF course, a standard axial lead electrolytic will fit; it is the larger radial lead LCR type that I was questioning (as in the LCR rec) or the possible addition of a Solen axial Metalized Film and not an electrolytic. The Solen is far larger but might be an interesting addition in that spot as I have found they work very well in power supplies depending (now I am starting to favor oil cans in PS if there is room which is something I want to do next time around - this doesnt apply to Craigs case). Again, I dont know of too many axial lead electrolyic caps in the 475v size; it's a tough one to source. Where are you getting your parts from? kh This message has been edited by mobile homeless on 03-03-2002 at 01:47 PM Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted March 3, 2002 Share Posted March 3, 2002 Thanks for the apology. I see where you are coming from. I value your input here and would like to work together and not against each other. I am getting ready to do some mods to my EL-34 amp as well. It's been sitting in the closet for the past few months out of neglect. kh Quote Link to comment Share on other sites More sharing options...
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