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Discussion Starter #1 (Edited)
Anyone use Sound Blaster X-Fi Surround 5.1 Pro USB sound module for REW?
 

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Discussion Starter #3
I ordered it and since I'm a new to using REW, I was wondering how you setup yours.
 

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Discussion Starter #4
What Mic are you using with it?

Thanks,
Roy
 

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Hey Roy, I have used a couple of different scenarios. I am currently using the Checkmate Galaxy CM-140, but I have also used the Radio Shack analog meter and the Behringer ECM8000. So far, the CM-140 is my favorite as it has an great built in condensor mic inside.
 

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No problem, sorry it took so long, it's been a bit insane around here. Let me know if you need any more help Roy.
 

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Discussion Starter #8
Will a SMS-1 mic work and if so how would it convert it to be used?
 

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That's probably a question John will have to answer. It's a bit outside of my experience level with REW and mics.
 

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It's the card I currently use, when I calibrated it with the loopback connection it showed that it is down 9db at 20hz. Is this consistent with anyone else's card?
 

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I use a Radio Shack SPL, but that doesn't have anything to do with why the card showed itself to be 9db down at 20hz before I made the correction calibration. When I ran the calibration test for the card the meter wasn't connected. I am aware that the figure closely resembles the generic correction figure for the RS Meter which could have someone misunderstand.

Once I caliblrated the card I was flat from 20-20,000, and there was some variance lower than 20hz.

I'm trying to see if this cards performance shows itself not well suited for movies or music with content less than 30hz, as this is where the roll off starts with my particular card. Since you can use REW to see how a sound card performs, I am just asking if any other users of this card can verify rolled off response starting as high as 30-40hz. I know most sound cards tend to have roll offs at the upper and lower limits of their bandwidth, but it is a $65 card that we are trying out amongst others to see how well it performs.
 

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ok thank you, would the crossover introduce a roll off starting around 40hz, or should I say be detrimental to the cards native frequency response? I ask because these types of roll offs are typical with sound cards but usually start more commonly around 20hz. I didn't have the sound cards crossover activated when I did the calibration with left channel loopback. I just noticed that the card doesn't seem to have a very good native FR.

In the setup I am using, I am measuring room response with powered monitors in a home recording, reference monitor setup. So I have the left and right RCA line outs going to the powered monitors, the line out for the sub is done through a mini jack to RCA adapter. This way he will have full range with his system. The monitors roll off around 50hz.

When taking measurements I use the internal crossover in the sound card set to 80hz and can run sweeps showing me how well the speakers integrate with the sub. We have achieved pretty good results. Any change I make to the crossover clearly shows up in the graphs. I have graphed each speaker independently, as a full range stereo pair, and as a 3.1 setup. All graphs show a proper 4th order crossover slope when it is activated and the sweeps are independent to one speaker, the monitors running in stereo, or just the sub itself.
 

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9dB down at 20Hz would be abnormal. Is it the same for all pairings of output and input? (i.e. right out to right in, left out to right in etc).
 

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9db down at 20hz native response doesn't seem too abnormal to me for a $65 External Sound Card, but I will check each configuration as you suggested so that we may have a better understanding of what this card is capable of.

Thanks
 

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Since you're in markham, I suggest going www.bewawa.com. They have a local warehouse and I've heard they're always friendly in person. You can also get same day delivery and pay at the door :).
 

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Since you're in markham, I suggest going www.bewawa.com. They have a local warehouse and I've heard they're always friendly in person. You can also get same day delivery and pay at the door :).
Thanks for the heads up. Yeah...they're a short drive form here...however TD is more on route for me so I'll likely go with them.

Regards, Bill....
 
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