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  1. brconner

    Triple.fi broken?

    Yes, they're still in place. 
  2. brconner

    Triple.fi broken?

    Hey All,   So I've have my triple.fi's for a fews now and I really like them. Had them remolded by fisher hearing and they're great. The problem is a couple days ago they started sounding really strange, very tinny and harsh.    Any suggestions? Did one of my drivers go bad or somehow...
  3. brconner

    Analog "versus" Digital recording and playback

      As I stated in my earlier post a square wave is an infinite number of sine waves added together. Triangle wave, same thing different harmonics with different amplitudes. I already know what I would see on a spectrograph plot. I work with much more than audio so many times I'm not concerned...
  4. brconner

    Analog "versus" Digital recording and playback

    I really like how you connected the bit depth to the dynamic range. Thats probably the clearest description of them I've seen.    Thats correct about the square wave the system should only output that one sine wave, but if I'm observing signals I'd rather get any kind of signal (sine...
  5. brconner

    Fostex T50RP alternative ear pads

    Hey Guys,   So I love my Fostex T50RP's but the only problem I have with them is that my ear touches the driver. Are there any other earpads that would fit these cans? Something that would push the driver further from my ear?   Thanks,   Blair
  6. brconner

    Question for an EE

      A DAC doesn't operate with analog input voltages. A digital command is sent (serially or in parallel) to a DAC and the DAC outputs an analog signal. Digital to analog converter. The way it converts the digital command to an analog signal can be done in several ways. The wikipedia page...
  7. brconner

    IEM Sensitivity, Frequency response & Impedance

    You actually want an increased low frequency response relative to higher frequencies for a increased bass response.   Also impedance and sensitivity will not tell you the sound quality of a headphone. More drivers doesn't mean better sound, its possible, but doesn't mean its better. More...
  8. brconner

    Analog "versus" Digital recording and playback

    Digital reproduction has the ability to be substantially better than analog reproduction. Digital recording techniques are capable of having a much higher bandwidth than analog ones and their distortion ratings considerably lower. Most audio analog devices are limited to around 20kHz to 40kHz...
  9. brconner

    Wire Testing Measurements

    Just an update, I haven't forgotten about the tests and will be doing the test hopefully in the next month or so. I have the materials though so its just a matter of performing the tests and documenting everything.
  10. brconner

    Wire Testing Measurements

    Thanks! I'll look over those threads. One of my goals is to explain the differences so hopefully its easily understandable to everyone.    Also not really a side note, but what the cables are being used for heavily influences their performance. Going from preamp to power amp is a totally...
  11. brconner

    Just a Sound Science question..

    The only reason i mentioned it was because of your previous post before mine. Didn't want to get the OP confused. A negative gain always means a 180 degree phase shift. Negative is a term thats used outside of the field but isn't really correct, unless the amplifier is inverting the signal.  ...
  12. brconner

    Just a Sound Science question..

    Quote:   Actually a negative gain is a 180 degree shift in phase. Doesn't necessarily mean that its less volume. Also, gain can be expressed as a ratio (unitless) or in decibels (dB)   If the gain ratio is equal to 1 then there is no change in volume.   Greater than 1 and the...
  13. brconner

    "Balanced" headphones - is there a consensus?

    The main reason to use balanced equipment is in professional audio were noise can be an issue. The common mode rejection is extraordinarily important when long cables are being used with sound sources like microphones. Their electrical output is so small that without the common mode rejection...
  14. brconner

    Wire Testing Measurements

    I'll have to try that out. I'll look around for some magnet wire.
  15. brconner

    Clipping, gain and playback volume? Need some clarification

      Clipping doesn't necessarily occur at 0dB. Clipping has to do with the amount of "headroom" an amplifier has and the physical capabilities of a speaker.    Let's say I have amplifier A thats powered from a single 9V battery and amplifier B that runs off of an 18V battery. Amplifier B has...
  16. brconner

    Wire Testing Measurements

    What I'll be getting is just the wire. Not a cable, so I will be getting the highest quality wire that I can. I'll also get some cheap stuff (RadioShack) to compare with.
  17. brconner

    Wire Testing Measurements

    Here are what I'm planning on testing so far assuming I can find some good prices and get things in reasonable lengths.   I want to test the following gauges: 20, 22, 24 and 26 AWG.   For each gauge I'd want to test pure copper, 0.999 silver, and 14k gold.   As I said earlier, I'd...
  18. brconner

    Wire Testing Measurements

    Quote: I actually wasn't sure what those were either, thats really interesting. From an electrical standpoint, so long as there is a solid connection between two materials the effect is extremely small and not noticeable until the signal frequencies are in the Megaherzt range or higher.
  19. brconner

    Wire Testing Measurements

    So after reading a significant portion of the thread that I'd like to make something very clear. This is only to test the wire. Not the source or the destination. The great thing about dB is you can just add them and subtract them. Seriously its like the coolest thing ever, waaaay better than...
  20. brconner

    Wire Testing Measurements

    Quote: I'd love to test the actual plugs and stuff, but that would get very expensive very quickly. I'll look into it though.
  21. brconner

    Wire Testing Measurements

    Thanks! I'm reading through it now.
  22. brconner

    What type of sound is the most complex to reproduce faithfully?

    In terms of recording and playback, I find that a distorted electric guitar is one of the hardest things to faithfully reproduce. The range of harmonics in vocals and a purely acoustical instrument are rather small in comparison. The distorted electric guitar has all of the mid frequencies that...
  23. brconner

    Sub$100 Multi purpose Headphones (Home-Studio)

    The MDR7506's are definitely not bassy. Neither are the T50rp's. I like the bass from the T50rp's though, very fast and clean, not bloated at all. Both of these headphones phones have clean highs, but I think the MDR7506's sound a bit bright.    Also, I think you're source will be fine. When...
  24. brconner

    Sub$100 Multi purpose Headphones (Home-Studio)

    I've been listening to my Fostex T50rps for probably over 50 hours now and haven't heard any changes at all compared to my other cans. Also, if you do get them and don't like something about their sound, it's very easy to modify and adjust the sound signature.   joelpearce, the cable comment...
  25. brconner

    Sub$100 Multi purpose Headphones (Home-Studio)

    I recently got the Fostex T50rp headphones. Shipped from amazon they were $80. I'm really impressed with them, I got them for mixing and you can hear every detail. If the source doesn't sound good, you'll hear it. After doing a frequency sweep with them, I'd say theres a small bump in the mid...
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