16ohm can recommendations
Mar 13, 2007 at 2:59 AM Post #16 of 28
Quote:

Originally Posted by XM inno Fanatic /img/forum/go_quote.gif
OK, given that...if one turns up the volume using the higher impedance phones to the same db level to listen as the lower impedance phones.....which will give better battery time...the lower or higher impedance phones?


In that case, it depends on the difference in efficiency versus impedance ratings between headphones. Recently, I have run across some very-low-impedance headphones that have very low efficiency ratings (and thus relatively low sensitivity ratings) - and those turned out to give me the shortest battery life from a portable device out of all of the headphones that I have tested.

That exception aside, if you turn up the volume of some higher-impedance headphones to nearly double the volume-control setting as opposed to a given lower-impedance headphone, then yes, those particular higher-impedance headphones will suck more battery time away from a portable device. Remember, it's efficiency, not impedance, that will directly influence the battery life at a given perceived loudness level.
 
Mar 13, 2007 at 3:16 AM Post #17 of 28
Quote:

Originally Posted by Eagle_Driver /img/forum/go_quote.gif
In that case, it depends on the difference in efficiency versus impedance ratings between headphones. Recently, I have run across some very-low-impedance headphones that have very low efficiency ratings (and thus relatively low sensitivity ratings) - and those turned out to give me the shortest battery life from a portable device out of all of the headphones that I have tested.

That exception aside, if you turn up the volume of some higher-impedance headphones to nearly double the volume-control setting as opposed to a given lower-impedance headphone, then yes, those particular higher-impedance headphones will suck more battery time away from a portable device. Remember, it's efficiency, not impedance, that will directly influence the battery life at a given perceived loudness level.



And I thought this would be a simple question! If we compare the ER-4p's at 27 ohms, the E3c's at 26 ohms, and the Super.fi 5 pro's at 21 ohms, at a given db level which would you recommend as being the most efficient and consume less battery power?
 
Mar 13, 2007 at 3:22 AM Post #18 of 28
Quote:

Originally Posted by XM inno Fanatic /img/forum/go_quote.gif
And I thought this would be a simple question! If we compare the ER-4p's at 27 ohms, the E3c's at 26 ohms, and the Super.fi 5 pro's at 21 ohms, at a given db level which would you recommend as being the most efficient and consume less battery power?


I've noticed very little difference in battery life between three identical portable players, each equipped with one of the three canalphones that you listed. This is because all three of them are nearly equal in efficiency - and even if the battery life between the three differed, the difference would be no more than a few minutes (out of a total of 15 hours average battery life).
 
Mar 13, 2007 at 8:55 AM Post #19 of 28
ok..so, what are some efficient inexpensive cans?
 
Mar 14, 2007 at 1:40 AM Post #20 of 28
i'll go searching every 32 or 60 ohm cans with high s/n db
 
Mar 14, 2007 at 10:10 AM Post #21 of 28
Some of my findings, requirements minium 20-20,000 Hz, 100+ dB, less than 0.5% THD, less than $40

Koss
KSC55 : 15-25,000 Hz - 60 Ohm - 101 dB
KSC24 : 18-22,000 Hz - 60 Ohm - 102 dB
SPARKPLUG: 10-22,000 Hz - 16 Ohm - 112 dB
PLUG : 10-22,000 Hz - 16 Ohm - 112 dB
KEB79 : 10-20,000 Hz - 16 Ohm - 102 dB
UR29 : 18-20,000 Hz - 100 Ohm - 101 dB
PORTAPRO : 15-25,000 Hz - 60 Ohm - 101 dB
SportaPro : 15-25,000 Hz - 60 Ohm - 103 dB
KSC75 : 15-25,000 Hz - 60 Ohm - 101 dB
CS80 : 15-25,000 Hz - 60 Ohm - 101 dB
SB45 : 18-20,000 Hz - 100 Ohm - 103 dB
SB49 : 18-20,000 Hz - 100 Ohm - 103 dB

Creative*
HQ-1300 : 20-20,000 Hz - 32 Ohm - 102 dB
HQ-140 : 20-20,000 - 24 Ohm - 110 dB
HQ-80 : 20-20,000 - 32 Ohm - 108 dB
HQ-65 : 20-20,000 - 32 Ohm - 117 dB
EP-635 : 6-23,000 - 16 Ohm - 106 dB
EP-630 : 6-23,000 - 16 Ohm - 106 dB
EP-480 : 20-20,000 - 32 Ohm - 112 dB
EP-185 : 20-20,000 - 32 Ohm - 113 dB
[size=xx-small](* Unknown THD)[/size]

Will look some more tomarrow. I know these specs do not represent sound quality, but its a start.
 
Mar 14, 2007 at 10:28 AM Post #22 of 28
Quote:

Originally Posted by Eagle_Driver /img/forum/go_quote.gif
I've noticed very little difference in battery life between three identical portable players, each equipped with one of the three canalphones that you listed. This is because all three of them are nearly equal in efficiency - and even if the battery life between the three differed, the difference would be no more than a few minutes (out of a total of 15 hours average battery life).


I get up to 50hrs with my sony player
biggrin.gif
 
Mar 14, 2007 at 10:30 AM Post #23 of 28
Quote:

Originally Posted by Joshatdot /img/forum/go_quote.gif
Some of my findings, requirements minium 20-20,000 Hz, 100+ dB, less than 0.5% THD, less than $40

Koss
KSC55 : 15-25,000 Hz - 60 Ohm - 101 dB
KSC24 : 18-22,000 Hz - 60 Ohm - 102 dB
SPARKPLUG: 10-22,000 Hz - 16 Ohm - 112 dB
PLUG : 10-22,000 Hz - 16 Ohm - 112 dB
KEB79 : 10-20,000 Hz - 16 Ohm - 102 dB
UR29 : 18-20,000 Hz - 100 Ohm - 101 dB
PORTAPRO : 15-25,000 Hz - 60 Ohm - 101 dB
SportaPro : 15-25,000 Hz - 60 Ohm - 103 dB
KSC75 : 15-25,000 Hz - 60 Ohm - 101 dB
CS80 : 15-25,000 Hz - 60 Ohm - 101 dB
SB45 : 18-20,000 Hz - 100 Ohm - 103 dB
SB49 : 18-20,000 Hz - 100 Ohm - 103 dB

Creative*
HQ-1300 : 20-20,000 Hz - 32 Ohm - 102 dB
HQ-140 : 20-20,000 - 24 Ohm - 110 dB
HQ-80 : 20-20,000 - 32 Ohm - 108 dB
HQ-65 : 20-20,000 - 32 Ohm - 117 dB
EP-635 : 6-23,000 - 16 Ohm - 106 dB
EP-630 : 6-23,000 - 16 Ohm - 106 dB
EP-480 : 20-20,000 - 32 Ohm - 112 dB
EP-185 : 20-20,000 - 32 Ohm - 113 dB
[size=xx-small](* Unknown THD)[/size]

Will look some more tomarrow. I know these specs do not represent sound quality, but its a start.



You can't really judge them by their frequency range.
 
Mar 14, 2007 at 8:12 PM Post #25 of 28
Quote:

Originally Posted by cindyk /img/forum/go_quote.gif
I get up to 50hrs with my sony player
biggrin.gif



My figure is for the average HD- or flash-based portable music player.
 
Mar 14, 2007 at 9:21 PM Post #26 of 28
Quote:

Originally Posted by cindyk /img/forum/go_quote.gif
You can't really judge them by their frequency range.


Quote:

Originally Posted by rodbac /img/forum/go_quote.gif
You can't judge them by any of those measurements.



I know, I said that:
Quote:

Originally Posted by Joshatdot /img/forum/go_quote.gif
Will look some more tomarrow. [size=small]I know these specs do not represent sound quality[/size], but its a start.


I am just making a list of cans...I don't know why, but I like making comparitive lists.

I made like 6 different Excel docs about Forza Motorsport when it came out, and I am still not done
tongue.gif
 
Mar 14, 2007 at 9:47 PM Post #27 of 28
Ya those specs do not represent sound quality...and badly :-/ Alot of IEMs don't reach 20k, and alot of Grados are listed as 20-20k >.< (barely making the list?)
 
Mar 15, 2007 at 1:37 AM Post #28 of 28
Quote:

Originally Posted by MaloS /img/forum/go_quote.gif
Ya those specs do not represent sound quality...and badly :-/ Alot of IEMs don't reach 20k, and alot of Grados are listed as 20-20k >.< (barely making the list?)


I just started to surf different manufactures for specs, I am not done yet.
 

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