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Post by oldfogie on Aug 5, 2007 17:12:46 GMT
Thanks everyone for your help on my leads question, here's another... Whilst originally researching headphone amps, I came across discussions on 'burning in' - whatever that is..... Despite using the Search engine, for the life of me, I can't find the threads referring to this subject. In a nutshell, does the Solo need 'burning in' and if so, what is the best way and for how long. BTW, this learning curve is great! Thanks for your patience, oldfogie
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Post by PinkFloyd on Aug 5, 2007 17:42:45 GMT
Thanks everyone for your help on my leads question, here's another... Whilst originally researching headphone amps, I came across discussions on 'burning in' - whatever that is..... Despite using the Search engine, for the life of me, I can't find the threads referring to this subject. In a nutshell, does the Solo need 'burning in' and if so, what is the best way and for how long. BTW, this learning curve is great! Thanks for your patience, oldfogie Not so much burning in but it does need times for the caps to form and a degree of time for everything to stabilise and reach optimum operating temperature.... Graham reckons about 3 weeks and you should leave the Solo on permanently for best results, it really is one amp that benefits greatly from being left powered up as it does take quite some time for it to kick in from cold but when it does, whoah! are you in for a surprise
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Post by oldfogie on Aug 5, 2007 18:01:00 GMT
Thanks PinkFloyd, sorry to sound so dim, but do I need to have my 580's connected as well with music from my tuner? Thanks again, oldfogie
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Post by PinkFloyd on Aug 5, 2007 18:41:04 GMT
Thanks PinkFloyd, sorry to sound so dim, but do I need to have my 580's connected as well with music from my tuner? Thanks again, oldfogie No, Just leave her powered up, listen to the music as you would normally do it'll sound great fresh from the box will sound a lot more open and dynamic a good few hours down the line... honestly, it's well known with the Solo... it benefits from being powered up constantly. Mike.
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Post by oldfogie on Aug 5, 2007 18:48:08 GMT
Thanks Mike, I really appreciate your help, Frank
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Post by cyreg on Aug 5, 2007 19:04:18 GMT
Hi, Just wondering; do you reackon "burn-in" works the same with a SM-PS as L-PS? I presume the active components are not switched off-and-on with the power depended 40 KHz rate or higher? These voltages/currents will be damped electronically? with C's? Just wondering how that works. Han
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Post by PinkFloyd on Aug 5, 2007 19:04:58 GMT
Thanks Mike, I really appreciate your help, Frank No help really Frank just switch it on and listen to the music.... it gets better after a few hours, you don't have to do a thing just plug it into a mains socket
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Post by oldfogie on Aug 5, 2007 19:23:47 GMT
Okey doke, I'll let you know how I get on when it arrives, I can't wait! I stopped listening with my Creek OBH-21 ages ago, off to Ebay it goes! Frank
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Post by PinkFloyd on Aug 5, 2007 20:44:03 GMT
What Solo are you getting Frank?
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Post by oldfogie on Aug 5, 2007 21:15:36 GMT
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Post by gns on Aug 5, 2007 22:55:03 GMT
Hi, Just wondering; do you reackon "burn-in" works the same with a SM-PS as L-PS? I presume the active components are not switched off-and-on with the power depended 40 KHz rate or higher? These voltages/currents will be damped electronically? with C's? Just wondering how that works. Han L-PS have one ripple component (50/60Hz) and one charging current component (100/120Hz). SM-PS have two, the same as L-PS plus 40kHz ripple and 80kHz charging current. This makes a linear regulator worse than useless at gains greater than 1, as the 40kHz and 80kHz ripple rejection is insufficient, and any amplification makes it worse. However, the Solo uses the regulator only for the power section who's gain is less than 1. The op-amp section uses a 100MHz transistor in its cap multiplier circuit, and to cut a long story short, rejects these frequencies. The recent delay on the Reflex was due to the voltage regulator, which has been replaced by a similar transistor regulator. This nicely ties in with "Burn-in", because, from new, the unformed caps hide the effect, making you think everything is OK. Then a few days later when the caps have formed, these frequencies break through bringing about a lack-lustre sound. As my reputation depends on long term high performance, I have had to work crazy hours to tweak this effect out. I trust the 9 till 5 ers will just be able to pin-point the problems in five minutes like they did with RoHS (as in did not)...
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Post by cyreg on Aug 6, 2007 14:54:25 GMT
Thank you Mr Graham Slee, for the basic technical explanation; that sure is good enough for me to pick up "the red thread" on differences of L-PS vs SM-PS (exact translation of "de rode draad", which does not exist in English language or......?) and burn-in is as important as ever!
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