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RE: myth or reality?

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In Reply to: RE: myth or reality? posted by lmckines2@paxio.net on September 18, 2010 at 19:11:02

Just because your wife doesn't listen to you, doesn't mean she's deaf:).
There definitely is a break-in with Maggies. I don't know if it's alignment of the muon's and quarks in the wire or relaxation of mylar but with time the high's become less strident and the bass fills in. Whether you need this to happen right away or over a month or so, is your choice. Personally I would cater to the little woman and turn the amps off when you are not around. In the long run they will end up sounding the same and your wife will be a lot happier. Remember she is already giving up a lot by allowing you to have what to most women is an aesthetic nightmare.
As to leaving amps on unattended, it depends on the amp. With all deference to PG and "old time" repairmen, most amps particularly solid state due just fine left on. Hell, I not only leave my amps (Class D) on all the time (unless I am on vacation) but also the tube pre-amp (Music Reference RM-5) which is getting close to being 30 years old (original purchaser). OTOH,older tube amps probably shouldn't be left on.
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I plan to procrastinate my demise for as long as possible. In the meantime, I practice by putting off all the little stuff.

Follow Ups:

RE: myth or reality? - Peter Gunn 05:19:43 09/20/10 (5)
OK, that is probably true as the "repairmen" in question were most likely referencing tube gear and Dumont televisions etc...... but I do own mostly tube gear...

I do still feel cycling helps fatigue the metal faster however.

I am confused at the advantage of leaving a class D amp on all the time however. They don't have huge caps like their cousins do, so there is no need to keep the caps bloated with power. It seems like a waste of electricity.

It's all about the music...
- Class D on all the time - neolith 20:05:50 09/20/10 (0)
  Just a creature of habit and laziness. I have always left my SS amps on so I continue to do so. Also the pre has a dc output which triggers the amps so if I leave the pre on then the amps are also on. As far as wasting electricity, the power draw of the amps in idle is about 15W each and the efficiency of the amps is about 85%. Relative to a Class A that is on intermittently, I say I am still in the "green" camp.
  �
  
  I plan to procrastinate my demise for as long as possible. In the meantime, I practice by putting off all the little stuff.
- RE: myth or reality? - DrChaos 10:24:59 09/20/10 (3)
  Transistors operating characteristics change with temperature.
  
  Presumably the device was optimized and measured at steady-state on, because if you're in a lab you have to keep it on.
  
  The manual on my PS Audio C-100 says to keep it on.
  
  Generally with it and my previous transistor amplifier I noticed a break-in coming from a cold period for about 15 minutes.
  - RE: myth or reality? - Peter Gunn 11:24:01 09/20/10 (1)
    "I noticed a break-in coming from a cold period for about 15 minutes"
    
    No doubt about that, but I actually like that. When you go to a live show the first song is rarely the best, but the sound improves as it goes on, they warm up, you warm up to them etc... so I don't mind the stereo duplicating that.
    
    Besides, if you start at the top there's no place to go :^ )
    
    It's all about the music...
    - RE: myth or reality? - DrChaos 12:27:22 09/20/10 (0)
      Wind & brass instruments are always flat when cold too.
      
      (speed of sound changes enough with temperature to notice).
  - on and off (when off is still on and on is essentially off) - wazoo 11:00:33 09/20/10 (0)
    Besides, when there is no signal being fed through a class D amp, it is pretty much as 'off' as my Pass amp is when I turn it 'off' via the front panel switch - the Pass isn't really off unless the breaker in back is switched off. I have a Bel Canto class D amp in another system, and its only switch is on the back - the recommendation is to just leave it on (which I do). I usually let the Pass warm up for a half hour before listening - warm up and break in are two different phenomenons.
    
    "Jazz is not dead - it just smells funny" FZ

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