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Frequency Response Of Headphones

Let's talk about speakers to begin with, their optimal frequency response is supposed to be a flat line from 20 to 20000 Hz. It means if fed by an input signal composed of varying frequencies at the same level (voltage), they will measure the same volume on a dB meter. It has nothing to do with the frequency distribution of the music itself, but merely ensures that the frequency distribution (tonal balance) of the music will not be changed by the speaker. If the music is bass heavy, the speaker will reproduce a bass heavy sound, if it has a lot of treble, they will... read more

Ibasso DX50 FAQ

The Ibasso DX50 is a $239 baby brother to the $830 DX100. Smaller, less powerful, with less onboard storage (8gb vs. 64gb) and using a Wolfson WM8740 24Bit DAC Chip opposed to the ESS Sabre 9018 desktop-class DAC chip in the DX100. However, with a nice onboard amp and a crystal clear analog lineout, the DX50 is quite a bargain and flying off the shelves. Lots of owners means lots of questions, answers and useful tips. This FAQ is created as an attempt to answer some of the most common questions without having to dig through (at the time of this writing) 338 pages with... read more

Glossary Of Terms

This is a work in progress. Please help us by fixing any glaring errors and writing useful and easy to understand definitions.   ACSS - An acronym for  "Audio-gd Current Signal System" which is a variation on the CAST (Current Audio Signal Transmission) circuit design developed by electronics manufacturer Krell and other similar concepts.  It is a means of coupling individual gain stages (either within a component or between two ACSS-connected components), which minimizes the audible effects of interconnect cables and potential impedance mismatches, as well as the need... read more

How To Equalize Your Headphones A Tutorial

By:  PiccoloNamek   I have wanted to make a thread like this for a while now, but have kept putting it off for one reason or another. With all of the threads about EQ popping up recently, I think it is finally time I post this. This thread is for people who want to get the highest possible fidelity from their headphones. A lot of what I am about to explain will be obvious to more experienced members. But there are people out there who do not even know how to obtain their own pink noise and sine wave samples, let alone equalize with them. If you are one of... read more

The Best BASS Headphones ( a Head-Fi Wiki)

Under Construction           Group 1  "Cannons"   Cannons are headphones that produce an excessive to enormous amount of impact that can be felt from the cups to the ears  and beyond. They vibrate the skull, they vibrate/tickle the cheeks, upper neck and cause physical sensations. This physical sensation can and does interfere with the accurate delivery of what are widely referred to as good response curves. The "mids" as they are the adjoining range are most affected by the over boosted low frequency. The "V" shaved EQ slope is applied to create an illusion of... read more

iBasso DX100 FAQ

As there are so many repeat questions in the DX100 thread, yet the thread is growing at an amazing rate, burying the answers, this F.A.Q. on the DX100 has been created.     Firmware:   The latest firmware is available from iBasso.com here  v1.4.2 (ZIP compressed file).   Previous firmware here -- v1.3.7 (ZIP compressed file). Alternatively, since iBasso.com tends to be down from time to time, member dhobsd keeps a directory containing all release versions here (TX, US). You can also find v.1.2.7 from member Sorensiim, (compressed zip here, uncompressed image file here,... read more

A Quick Guide To Lossless Versus Lossy Music Files

Lossless: Lossless means that, digitally, regardless of the format the file is stored in, there is no loss of data. The raw digital music file format types in common use are AIFF and WAV. The most common compressed digital music file format types are FLAC and ALAC.   FLAC and ALAC compress the file, much like Zip compresses a regular file, but more efficiently for audio information.   FLAC has different levels of compression, trading off file size for the amount of processing power required to compress and decompress the... read more

Comparisons of the LCD-3 and the LCD-2 Rev. 2

I've spent the better part of two nights going back and forth between these two headphones. Just my personal thoughts made from the notes that I took...two cents as they say....likely worth that.   As a bit of a backdrop, here are my thoughts on the differences between the R1 and R2 LCD-2s:   http://www.head-fi.org/a/comparisons-of-lcd-2-rev-1-and-rev-2     Ergonomics/Aesthetics Both headphones look like they’re part of the same family with some distinctions (kinda like the Baldwin brothers I guess). I prefer the darker wood colour of the LCD-2s, but... read more

Comparisons of LCD-2 Rev. 1 and Rev. 2

With the death of the massive LCD-2 thread, I thought maybe a wiki was a little more appropriate: So I’ve had an evening with both my LCD-2 revisions and here are a few thoughts... Ergonomics/Aesthetics Upon first glance it is very easy to dismiss these two as “identical twins”, but upon closer inspection there are a few subtle differences. First off, the wood on the Rev. 2 is a lighter shade than my older LCD-2s (purchased last September) and the finish of the wood is a little more “polished” and professional in appearance on the newer version. However, I think I... read more

Bioeq Rockbox

    BioEQ for Rockbox is a fascinating EQ setup designed with the iRiver H140 originally in mind. The files have been given to me, FLACvest, by HiFlight. I first heard of this EQ from Dr. Xin Xin’s Cool Talk massage boards back in the day when Head-Fi was new and I was trying to figure out what the heck an operational amplifier was. I have since adapted BioEQ to sound good on the Sansa Fuze; I suspect it will do wonders for iPods and other devices.      The key feature of BioEQ is the design of the low shelf; peak filters 1, 2, and 3; high shelf filters, their Q... read more

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