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Is there anyone who has benefitted from changing coupling caps in this 845 amp . the cuurent caps are infinicap sigs and each amp has two caps. I was thinking of having a tech install mundorf siver foil and /or jupiter beeswax. but it might not be better, any thoughts
thanks
db
Follow Ups:
setdude I have been trying to contact you
Its David who bought the rel strata
can you send me your email
I final took the SET plunge and am loving it
David
genelex, hi. My experience with Mundorf has been mixed. Got excellent results in a loudspeaker xover. Then I tried the silver supreme .22 as couplers in SET 300B amps and was totally unhappy with the result. I had tried Jensen copper foil & oil and RelCap RTX in the same position with good results. Reworking these 300B amps has been the latest project so have been trying various combinations. To date the best combination has been a Reliable Teflon tin .1 in first position and Aeon polypropylene tin in the second. I was so unhappy with the Mundorf .22 I decided to try the Aeon because I happened to have them. There are so many variables at work it becomes difficult to predict results. Reality always trumps theory.
That's the crux of the thing. I will probably try the Jensen coppers again at some point. Tobias makes excellent caps. I have been tending towards Teflon tin as the sonic best - fast, neutral, does less damage to signal, etc. Avoiding a cap monoculture is a good rule of thumb. Enjoy your cap exploits. DIY is fun.
Are unquestionably the best the cap for smoothness and clarity and linenerty..I own many many tube amps but mostly vintage PP but I have the equipment to test these caps with a set up I made for testing caps with distortion analyzer and sweep gen..The biggest thing I find with polypro or any plastic is they lack body by comparison to a good paper in oil.Paper caps are always very linear and thats why many manufactures used them years ago.
THe k40 russian mil caps are in league by themselves..Just do a search on the asylum in comparison to any cap you want and it always comes out on top it seems.THe jupiters to are very good if they can with stand the heat..I use all vit Q and k40s in all my mac mc60s and my ciation 2s and the altec 1570s and all my heaths and dynacos have them to..I have not been able to go back to any plastic cap becuase I have been so spoiled and this includes hovlands and auricaps and even the russian teflons.
I dunno, I replaced K40's with AN copper in a DeHavilland Ultraverve and they were a great improvement. Like tube rolling, caps are circuit dependent. Additionally, we all hear thing a bit differently.
You have to experiment and find out what you like best.
setdude, I have been trying to get back intouch with you
Its David ,the guy who bought the rel strata
can you email me? heres my address davidabrown8@verizon.net
I was thinking of using audionotes I wonder how they compare to jensens copper
db
Hello db
While Jeffrey is correct about the Platinums being a very nice capacitor. Many have felt the ASL 845 amps to be a bit aggressive in the upper end. This is, of course, a matter of personal preference and I would base your decission on what you are currently experiencing with your amps.
If you too find some agression up top, something along the lines of the Jensen or Audio Note PIO's may be a better route to take. If you are looking for a very clean, articulate presentation, the Platinums will be the choise to get you in that direction.
You could also try a combination in the different positions to get just teh right sound for you, also as jeffrey mentioned. He has a lot fo experience with the ASL 845's and has done some experimentation.
If the 1006s are a little 'agressive' on the top, the SCP may NOT be what he wants. Maybe a little warming with the Jensen PIO/CFs, and if after they're broken in, if genelex feels it's lacking a little 'air', he could add, say, a 0.047 SCP bypassing the Jensens.
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Tin-eared audiofool and obsessed landscape fotografer.
http://community.webshots.com/user/jeffreybehr
Yes Jeffrey, I agree completely. You may not have noticed but my first sentance mentions the Oils may be a btter route to take as I have copied below. While I have experienced good results with bypassing oils with Teflon units, I am not a big fan of doing this in coupling positions unless you are familiar with using the proper values to get the best results.By the way Jefferey, Did I understand you correctly that you purchased another pair of Canes? If so, did you order a pair of the new version coming out in a few weeks?
".....If you too find some agression up top, something along the lines of the Jensen or Audio Note PIO's may be a better route to take. If you are looking for a very clean, articulate presentation, the Platinums will be the choise to get you in that direction......"
...of the PIO/CF Jensens. They're quite affordable, and I may try them next time.No, I've not purchased another pair of 'Canes; I have just one pair. I have ordered a pair of the new AQ1006s, which are supposed to be built more vertically (like the Cadenza, I assume) and have better transformers. We'll see what gets here. (Of course I've already dreamed up a bunch of improvements for them...on paper.)
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Tin-eared audiofool and obsessed landscape fotografer.
http://community.webshots.com/user/jeffreybehr
...what's in there. My schematic indicates a 0.22 in the 1st position and a 0.47 in the 2nd. If tonal neutrality and signal cleanliness AND smoothness are important to you, I'd use a SoniCap Platinum in the 2st position and a Cardas Golden Ratio in the 2nd. Then again some of us love the lushness of the Jensen paper-in-oil/copper-foil cap. Probably even a Reliable MultiCap 'styrene (RTX) would be better than what's there.There are lots of other caps in the amp to improve; e-mail me at jeffreybehr(at)cox(dot)net and I'll help you spend your money. :-)
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Tin-eared audiofool and obsessed landscape fotografer.
http://community.webshots.com/user/jeffreybehr
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