Rockbox General > Rockbox General Discussion
The iPod Poor Bass Response
soap:
Also note that many 16ohm phones (E2C I'm looking at you) are designed with the iPod in mind (and current tastes) and have a heightened bass response built in. All this above discussion is assuming your headphones themselves have a flat frequency response (they don't) and you desire a flat frequency response (I do).
EDIT: Clarification made to second sentence.
saratoga:
--- Quote from: tdtooke on July 28, 2007, 01:24:39 AM ---Shure e2c and e3cs are in the 32ish ohm range and work nicely for me. The e2c's are pretty affordable too, you can get them most places for under $100. In my personal experience the earbuds that actually come with the iPod are too hard to get properly situated so you don't lose so much bass even without the aforementioned issue. I've found just slipping those earbuds in without making alotta effort pretty much guarantees maximum bass loss.
--- End quote ---
The E2Cs are 16 ohms actually, so you're still getting the low impedance issue. However, its not that bad with the 5G and Nano, so you may never have noticed.
TexasRockbox:
What are the headphone coupling capacitor values for the ipod 5G Video? In many portabale equipment a value of 220uf is considered a good value for ensuring a wide range of compatibility with less variation in low-end bass response. 100uf and (yikes) 47uf is where trouble begins. Tantalum capacitors at the 220uf level are expensive and to me do not sound as good as aluminum electrolytic at the same value. The Tantalums tend to hide fine detail.
tdtooke:
--- Quote from: saratoga on July 28, 2007, 11:57:00 AM ---The E2Cs are 16 ohms actually, so you're still getting the low impedance issue. However, its not that bad with the 5G and Nano, so you may never have noticed.
--- End quote ---
Oops, sorry about putting out bad information, haven't used or looked at e2c specs in a while, though I can say I never noticed any problems with an iPod and them.
TexasRockbox:
Maybe make a 32ohm and a 16ohm eq preset instead of just setting everything to "0" for flat response.
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