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#195014 - 26/12/2003 08:25 Effect of Temperature extreems on the Empeg
edsmiata
addict

Registered: 18/08/2002
Posts: 544
Loc: New Jersey
As noted in the FAQ's:

Operating range (disks spinning and being read): 5ºc (41ºf) to 55ºc (131ºf)

Standby range (disks spun down): -20ºc (-4ºf) to 60ºc (140ºf)


So, as I live in NJ where the temp is now 25-50F, would it do the player any harm if I were to listen to the AUX until the interior of the car warmed up? This is my 3rd winter with the unit and have not had any problems with temperature extreems, but was just thinking if I play my Sony through the AUX input is it the same effect than if I were playing the Empeg player?

Which begs the question: If I am using the AUX input are the HD's spinning as if I were using th ePlayer?

Ed


Hope you all had a good holiday!!
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#195015 - 26/12/2003 09:00 Re: Effect of Temperature extreems on the Empeg [Re: edsmiata]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14493
Loc: Canada
The HDs need to spin at power on in order to load the player software. AFter that, they spin down and stay down until music is requested from a playlist.

I have a CF->IDE adapter here that I plan to install as "drive0" in one of my players, with the real HD as "drive1". All of the player files will be on the CF card, all of the music and playlists on the HD.

EDIT: I will locate the database files on the CF card as well, and possibly the tag and playlist files, if need be. Hopefully I can get away with a 16MB card, but I also have a spare 160MB CF if necessary.

This should allow booting without having to spin up the HD (may require that I tweak the drive and/or kernel, but I think I can handle that part).

Cheers


Edited by mlord (26/12/2003 09:02)

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#195016 - 26/12/2003 11:49 Re: Effect of Temperature extreems on the Empeg [Re: mlord]
CrackersMcCheese
pooh-bah

Registered: 14/01/2002
Posts: 2489
Will this result in a faster boot time?

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#195017 - 26/12/2003 13:44 Re: Effect of Temperature extreems on the Empeg [Re: CrackersMcCheese]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14493
Loc: Canada
It should be faster. I could even tweak the (Hijack) kernel to make it near instantaneous..

Cheers

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#195018 - 26/12/2003 15:15 Re: Effect of Temperature extreems on the Empeg [Re: mlord]
Major_Sarcasm
member

Registered: 28/08/2003
Posts: 149
Loc: Isle of Wight, UK
Mark, would there be any other benefits to this setup, other than faster boot time?
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#195019 - 26/12/2003 18:52 Re: Effect of Temperature extreems on the Empeg [Re: mlord]
Taym
carpal tunnel

Registered: 18/06/2001
Posts: 2504
Loc: Roma, Italy
Hey, that's a good idea, Mark!

Just thinking... the day CF media and similar reach the proper capacity, they culd easily be used instead of hdds with such whaterver->ide adapters. I see a long long life in front of the empeg... And better performances!
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#195020 - 26/12/2003 21:30 Re: Effect of Temperature extreems on the Empeg [Re: Major_Sarcasm]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14493
Loc: Canada
Mostly it means that, for radio use or when not actually using the empeg, the drives don't need to spin up on each power-on cycle -- less wear and tear, especially in the extreme heat of summer or any day in a Canadian / Scandinavian winter..

Cheers

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#195021 - 27/12/2003 02:26 Re: Effect of Temperature extreems on the Empeg [Re: edsmiata]
tanstaafl.
carpal tunnel

Registered: 08/07/1999
Posts: 5549
Loc: Ajijic, Mexico
So, as I live in NJ where the temp is now 25-50F, would it do the player any harm if I were to listen to the AUX until the interior of the car warmed up?

Yes and no...

I have started my empeg quite a few times at temperatures below zero F, and it did start up and run. The limit on my player seemed to be about -15 degrees F, where it wouldn't start until I laid it on the floor under the heater outlet for about 10 minutes. So from that point of view, sure, no problems.

However... my hard drive did fail (bad sectors/head crash) after about three years of this abuse, and while I can't prove it, I suspect those cold starts did contribute to the problem. Although... it did get pretty rough usage (bumps/impacts) when I used it on my bicycle .

tanstaafl.
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#195022 - 27/12/2003 08:52 Re: Effect of Temperature extreems on the Empeg [Re: mlord]
smu
old hand

Registered: 30/07/2000
Posts: 879
Loc: Germany (Ruhrgebiet)
Hi Mark.

Correct me if I'm wrong, but doesn't the empeg software rely on the scratch partition to be at least 16MB in size? And AFAIR the same is true for the software partition. You could of course tweak the kernel to redirect any access to the scratch partition to actually access the appropriate partition on the second HD, but I think that would defeat most of the benefits of using a CF as the first HD, wouldn't it?

cu,
Sven
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#195023 - 27/12/2003 10:20 Re: Effect of Temperature extreems on the Empeg [Re: mlord]
CrackersMcCheese
pooh-bah

Registered: 14/01/2002
Posts: 2489
I have a spare 128MB card lying around - if it works for you I'd like to give it a go as well.

What kind of cable do need? Laptop IDE - CF?

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#195024 - 27/12/2003 14:51 Re: Effect of Temperature extreems on the Empeg [Re: CrackersMcCheese]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14493
Loc: Canada
I purchased a CF-to-laptop-IDE adapter module for CAD$27, from these guys:

adis.ca

Specifically, I got one of these

Cheers


Edited by mlord (27/12/2003 14:53)

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#195025 - 27/12/2003 14:56 Re: Effect of Temperature extreems on the Empeg [Re: smu]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14493
Loc: Canada
Well, I guess this means I'll be using the 160MB card rather than the 16MB one.

Cheers

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#195026 - 28/12/2003 13:47 Re: Effect of Temperature extreems on the Empeg [Re: smu]
mcomb
pooh-bah

Registered: 31/08/1999
Posts: 1649
Loc: San Carlos, CA
Correct me if I'm wrong, but doesn't the empeg software rely on the scratch partition to be at least 16MB in size?

But, swap is only enabled when the player is synchronizing and AFAIK the player just calls 'swapon /swapfile' so all you would have to do is adjust that symlink to point to the real HD.

-Mike
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#195027 - 28/12/2003 13:56 Re: Effect of Temperature extreems on the Empeg [Re: mcomb]
mtempsch
pooh-bah

Registered: 02/06/2000
Posts: 1996
Loc: Gothenburg, Sweden
swap != scratch

On the scratch partition the empeg stores larger dynamic data like, IIRC, current playlists etc

/Michael
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#195028 - 28/12/2003 14:15 Re: Effect of Temperature extreems on the Empeg [Re: mtempsch]
mcomb
pooh-bah

Registered: 31/08/1999
Posts: 1649
Loc: San Carlos, CA
swap != scratch

Whoops, yeah, failed to parse that properly. Never-mind

-Mike
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EmpMenuX - ext3 filesystem - Empeg iTunes integration

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