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How To Create Your Own Board By Photo Etching

Fred_Fred asked to see the method I use to make my boards. Here is the technique I use to make them:   First, you need a few basic supplies.     Transparency film Positive resist copper clad board Positive developer solution Exposure light (I built my own)   Not shown: Laser or inkjet printer (pick transparency film compatible with your printer) Plastic trays to develop and etch in One or two pieces of glass of plastic sheet (I use two sheets of glass I cut from an old window)   I also have a couple of optional items that make my life... read more

Impedance Resistance

I posted this in another thread, and I notice that there are quite a few people asking about it so I thought it might warrant a thread of it's own. I wrote all of this fairly quickly, and I'm not sure I understand all of the concepts perfectly. I know there are quite a few other people here who probably understand this beter than me, so correct me if I state anything incorrectly. I found pretty much all the other info I read on the subject to be accurate, but sometimes misleading. Here is my explaination of why resistors help sound quality, and why lower impedance... read more

Beyerdynamic Dt48

In the following days I will be describing their various sounds, model differences, & ohms throughout the ages that even some research papers were written about them.  Models include The DT48A SN108 from 1951 The DT48S NAGRA from the mid 50's The DT48S NAGRA from 1968 The DT48E from the 1970's The DT48A from the 1970's or 80's (suspected) The DT48E from the 1980's The DT48E from 1991 The DT48A from 2005 The DT48E from 2008 read more

Ibasso Balanced Portable System

Developing a portable listening system that has the ability to provide balanced and single ended audio to headphones.  The purpose for this setup is to have a system that "approaches" desktop performance and provides a learning playground.   Using a portable DAC that has balanced output to a portable amplifier that has both balanced and singled ended inputs and outputs.  I am starting out with the iBasso system and will expand this as new equipment is purchased.  The first iteration with be with the stock PB2 and DB1 using iBasso cable between the units.  Sources will... read more

How To Clean The Filters

If it is metal mesh, no tool is going to clean it up. However, there is still one way: Get some pharmacy grade peroxide solution (H2O2 in 3% or 5% solution), pour a little bit in a small container and dip only the metal mesh part of the nozzle in. Let the metal mesh submerges for 3~5 minutes and allow the magic to happen. Dips the metal mesh into water to rinse, then dry it up with tissue (you might need to repeat the whole process several times before all the wax is cleaned). Be sure that the nozzle is always facing down so no liquid will go into the housing. You... read more

Hisound Firmware and Directions

Hello guys Jack from Hisound just provided me with the updated Studio V and Rocoo P/BA firmwares as well as directions. I decided to make a faq page as it will give others the ability to add updated firmwares and such regarding Hisound products in a centralized area.   Update: Guys I'm being told now that there are some compatibility issues with larger files types (FLAC and I'm not sure with WAV) as well as the files not showing up in alphabetical order. So just letting you know. I'm also hearing that you can only load this firmware via Windows XP? I'm not sure... read more

An Interview With John Grado

[ The following is an original John Grado's interview done by Zanth, posted on 7/29/05 ]   Well folks I just had one heck of a time chatting with John Grado of Grado Labs (like that needed to be mentioned ) I rang him at just after 9 am today and we talked for a little over three hours! I was pretty nervous in the beginning but John was so laid back and forthcoming that I soon settled into a comfortable state and it felt like talking to a friend rather than me "interviewing" a manufacturer. I just arrived at work so I can't write too much just yet, but I will... read more

colorfly C4 pro Player Media Format Support List

Hello, A lot of C4 lovers ask me about what format C4 support. Now all formats and their specifications are listed below. 1 WAV Format 1)PCM / PCM_ FLOAT Sampling rate: 32Khz-192Khz BitsPerSampe: 8/16/18/20/24 Bit 2)IMA_ADPCM / MS_ADPCM Sampling Rate: 32Khz-48Khz BitsPerSampe: 8/16Bit 2 APE Format 1) Sampling Rate: 32Khz-48Khz 2) BitsPerSample: 16 Bit 3 FLAC Format 1) Compress: Q1- Q10 2) Sampling Rate: 32Khz-192Khz 3) BitsPerSample: 16 Bit 4 MP3 Format 1) MPEG1/2/2.5 Audio Layer1/2/3 2) Sampling Rate: 32Khz-48Khz 3) BitRate:... read more

Hip Hop

    A Beginners Guide to Hip Hop       Historical breakdown of hip hop (Roots of Hip Hop, Old School Hip Hop, Golden Age Hip Hop, and New School Hip Hop)   The Roots of Hip Hop (B Boy / B Girl era involving true MCing and DJing which was highly influenced by graffiti).  Started in the early 70's with block parties located in New York City. Quote: Rap music emerged from block parties after ultra-competitive DJs isolated percussion breaks, those being the favorites among dancers, and MCs began speaking over the beats. -... read more

Shure Se Series Models Naming

SExy0. x=Model Class y=Number of drivers   EX: Shure SE420, x=4, y=2, Thus, the headphone is in the 4th model class, and contains two drivers.   [Original Poster] In My Honest Opinion: 210 is like E3 310 is like E4 420 is like E5 530 is like E500 read more

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