Had a chat with a Creative "support tech" yesterday. Here's some of our chat:
QUOTE
>You : hi. bad noise in my headphones when battery runs low...
>
>You : both with alkaline and 750mAh NiMh
>
>You : updated firmware to the one on nomadworld.com. didn't help
>
>Lorraine : Hi Staffan, this is normal, you need to replace the battery as
>soon as it starts running low (the red light flashes) -it can also be
>related to the quality of the mp3 files, how long to batteries last?
QUOTE
>You : using mp3 encoded with lame @ alt-preset 128.
>
>Lorraine : how loud is this though?
>
>You : I'm not sure how long they last, but I usually play at max volume,
>low sensitive headphones
>
>You : but after the light start to flash red, there's atleast 1 more hour
>playtime left on the batteries
>
>You : are you sure this is normal behaviour?
>
>Lorraine : yes, it has approx one hour but you should change it before it
>runs out to avoid this, this is normal behaviour but how loud exactly is
>this noise?
>
>Lorraine : it happens everytime the battery runs out?
>
>You : aha, the noise... it's VERY loud. much louder than the music. yes,
>has happened every time
>
>You : this cant be meant to be. I know CREATIVE thinks there's no bugs in
>your product, but if this isnt a bug I dont know...
>
>You : funny thing is, I talked with another tech support person last week
>and he said he never heard of a similar thing, he also told me to try a
>firmware update
>
>You : and I *think* I managed to update the firmware. is there a way to
>check which firmware my muvo has currently?
>
>Lorraine : You should ensure you are always using the muvo format rather
>than the windows version, I have had this happen with a muvo I use but
>found it related to the battery used and it also depended on whether or
>not I changed the battery after it started flashing or powered it down,
>how long have you the muvo?
>
>You : I've had it approx 10 days. But please, you cant seriously say that
>I must throw the battery when there's so much 'juice' in it??
>
>You : I've never formatted it with anything else except the tool you
>supplied
>
>You : Creative I mean
>
>You : battery I use is mftd. by Energizer
>
>Lorraine : one moment
5minutes later
QUOTE
>Lorraine : this is not hardware related, it would happen at high volume
>levels, you do not need to change the battery as soon as the light flashes
>but if you let it run out completely you will risk this noise. I will pass
>on your complaint but at the moment I would suggest trying diferent
>batteries
>
>You : brand new Energizer NiMh 750mAh. And the other batteries were
>Energizer Alkalines. damn good batteries, dont you agree?
>
>You : if the player is this picky with batteries (and it's a known factor)
>Creative SHOULD put up a list of approved batteries...
>
>You : the other tech support person 'Boris' hinted that my player may be
>defective.
>
>Lorraine : no this has happened with my muvo and I have just confirmed
>here it is not a hardware problem, if you listen to music at quite a high
>level this can happen.
After this ~15min chat, I was not happy cause I was basically told to not play so loud. Any views on this? Btw, the noise that the MuVo generates when it runs low on batteries is very unpleasant.