Rockbox mail archiveSubject: RE: Battery life as related to output volume
RE: Battery life as related to output volume
From: [IDC]Dragon <idc-dragon_at_gmx.de>
Date: Sun, 14 Mar 2004 22:29:41 +0100 (MET)
> While impedance is a key factor, the other key to power consumption by
> headphones is their efficiency. If you have one headphone that's rated
> 92db/mw and another that's rated 101db/mw, the 92db/mw will take eight
> the power to reach the same volume level. For every 3db decrease in
> efficiency, the power doubles. If you want to increase battery life, pay
> close attention to the efficiency of the headphones that you use.
Notice the mW for milliwatts in your statements. We're talking about small
parts of the energy your Archos consumes. This is practically neglible.
You can gain a lot more by selecting your next disk with an eye on its
-- +++ NEU bei GMX und erstmalig in Deutschland: TÜV-geprüfter Virenschutz +++ 100% Virenerkennung nach Wildlist. Infos: http://www.gmx.net/virenschutz _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2004-03-14