Amp showing its age?


Before getting into details, just the bottom line: can an SS amp, well into its second decade, begin raising its output impedance and/or dropping its peak current capability? Because mine certainly seemed to be doing one or both, so I have just replaced it, and now the speakers are again obedient.

 

hickamore

Showing 9 responses by hickamore

@mswale  Too late, already sold and replaced. Oh, well. I was already considering an upgrade. Lucky you on a 50-year amp. What is it, Crown? Early ARC? An amp like that would be a conversation piece if you started a thread on the subject in this forum.

@chenry, @noromance  Never had it checked out, nothing replaced, but warranty had expired before I noticed the slippage in performance, and the thing weighs a ton and is long discontinued. Of course you must be right. Guess I will sell it with a note to check capacitors and/or use with 8ohm speakers until it dies. Thanks! 

@chenry  Makes total sense and no doubt you are right. Thanks, I will look into that.

@lynn_olson  Mine is a case of gradual relaxation on driver grip, most noticeable in the bass. I was actually enjoying the bottom end end harmonic distortion, but when a notorious high amplitude signal in the low impedance frequency range threatened to blow the left speaker, I knew the time had come. Being impatient, and having no repair shops anywhere near, and also curious about the new iteration of Coda S5.5, I simply switched it in for the Parasound, quickly heard the difference, then posted this question.
@ audioman58, @chenry I'm not worried about the speakers, given that a new amp quickly removed their flabbiness. They are a little newer than the amp and now sound fully restored. So I now feel confident that their useful life without repair will exceed my own.

@jimmyblues  Guess I simply took the amp for granted until after the warranty had expired. But can't complain after 11 trouble-free years. Recapping may give it a new lease on life -- in someone else's system. No point in my keeping it given my age plus a fresh ten-year warranty on a new amp that may well outlive me.

@8th-note  Not surprising what logistical problems you would have with repair or resale at the old monster Krell level. Given your good fortune with repair, sounds like a lifetime amp and good investment decades ago.

I will definitely advise buyers this is original condition, no caps replaced as yet.

Just bought a 45-lb Coda that checks my boxes, so at my age fuure equipment repair/upgrade should be easily manageable. (Well, except for a monster dual-firing Tannoy sub that I won't keep and needs the new amp plate installed before resale .  .  .) 

 

@ozzy62  Appreciate the reassurance on Coda. Though the Parasound really was losing its grip. I never upgrade without provocation. Too many other costly priorities in life.

@stringreen  LOL. Maybe I should have bought Ayre way back when.