vstudio 100 pre-amp frequency response

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M@ B
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2011/06/15 00:10:40 (permalink)

vstudio 100 pre-amp frequency response

hello,
is there a frequency response graph for this pre-amp?
i plan to use this pre to do an acoustics analysis of my room
and i would like see the pre-amp's graph so i will know which curves are
due to the room and which curves are due to pre-amp when i look at the acoustic analysis.

thanks,
m@

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    codamedia
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    Re:vstudio 100 pre-amp frequency response 2011/06/15 09:59:28 (permalink)
    I don't see an actual graph anywhere, but I often don't see graphs for interfaces - usually just microphones.

    According to the specs:
    Frequency Response
     
    96.0 kHz: 20 Hz to 40 kHz (+0/-3 dB)
    48.0 kHz: 20 Hz to 22 kHz (+0/-3 dB)
    44.1 kHz: 20 Hz to 20 kHz (+0/-3 dB)

    Essentially this means it should stay relatively flat over the entire range. It should not boost anything (+0) yet it could cut up to 3 db (-3) at any point during the range.

    Although that may sound drastic, it is pretty normal and is on par with it's bigger brother the VS-700. Normally these cuts would be in the upper ranges, but that is very hard to verify -  I'm just going by past experience.
    post edited by codamedia - 2011/06/15 10:01:02

    Don't fix it in the mix ... Fix it in the take! 
     
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    #2
    M@ B
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    Re:vstudio 100 pre-amp frequency response 2011/06/15 11:23:51 (permalink)
    thanks coda,
    although a graph would be i deal, i suppose 'a possible -3 db at any point in the spectrum' is better than no information at all.

    the reason for my concern is this (excerpted from a post i made in another thread):
    "while reading other threads about the arc system, one user said that he had quite a bit of confusion about a large dip at 6khz in the arc's analysis and after rearranging his speakers and remeasuring the room a couple of times, that he noticed the same large dip at 6khz existed on his pre-amp's freq response graph. he then determined that his pre-amp was the culprit not the room. he switched pre-amps and the analysis straightened right out."

    should i be concerned about using this preamp?
    i mean, i do understand that i'm not tuning abbey road's control room, but i don't want to chase my tail either.

    thanks again,
    matt

    #3
    codamedia
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    Re:vstudio 100 pre-amp frequency response 2011/06/15 13:56:10 (permalink)
    I'm not convinced that a truly flat pre-amp exists (in my price point anyway). Even older consoles and tape machines are loaded with imperfections - that is what gives it "something special".

    I think you should give it a try. Anything that has a gain (in theory) should not be caused by the VS-100. Anything with dips below -3 (in theory) should not be the VS-100. Getting a room 100% flat is likely not possible, getting a variance of 3 db here and there is very normal.

    I'm not sure what you are using for speakers, but it is likely they will add a lot more color than the preamp.
    Same will go for the mic you are using, however that likely has a graph of it's response for comparison.

    It's all just a balancing act. One worth doing though - as it will certainly help you to understand your room/equipment better.

    Just my 2 cents. Good luck!

    Don't fix it in the mix ... Fix it in the take! 
     
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    M@ B
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    Re:vstudio 100 pre-amp frequency response 2011/06/15 14:17:18 (permalink)
    thanks coda,

    i suppose any dips below -3db could be the result of a compounded room+preamp issue, but there is really no way to confirm that without the preamp's graph.

    the speakers i'm using are far from reference monitors, the older krk trapezoidal passive monitors. the amp is also part of the over all frequency response as well, in this case, that would be a crown power-base 2.

    the reference mic will be the one that comes with the ik multimedia arc system (due here tomorrow).

    there will be some acoustic treatment used as well.

    thanks again.

    #5
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