Hi Bruce, I've tried eveything through the external card just can't make it turn off the monitoring. Unfortunately I'm on Vista, which sucks when it comes to driver functionality. I've also got a technology background so would usually find the driver stuff quickly. I just can't see where to turn off the monitoring in Vista...I'll search a bit more today.
My laptop does however have line-in so I'm pretty sue it's looking good. The levels look very good when testing. So at the very least I'll try and do a few takes today and put them up here for people to have a look at.
OK here is my graph using 2 cards. I simply cannot get this to work with line in and line out on the same card in Vista. About to give up sadly...very annoying as I've just bought the EQ box etc to treat the LFE.
I just get white noise and horrible things trying to use one card. So here is a graph with the input on one card and the output on the other, I can't use line out but I can use SPIDF on my NX USB card. It all calibrated nicely and I've also used the ECM cal file from the site and I've created a calibrated file for the setup for the cards. All tested OK.
However, at the end of my measurement I get an warning that basically says...
However the measurement looks like this. I presume the tail is where the error is?
Any help gratefully accepted although if you think it is to do with the setup I'm pretty knackered on that front it seems.
No, your soundcard calibration file is bad. It should be basically a straight line except for the very low and very high ends where it should fall off. See what yours looks like - it's the dotted line.
I'm pretty much knackered then. It doesn't work for me with one card. I've spent near to 6 hours now trying to make it work, and it won't.
Not sure what I can do now. If I use one card I get white noise in the background. The ECM8000 won't pickup enough through the NX USB card, just won't have it. Line out I've sorted now but switching off the monitor but I don't get anything thru the mic once I do.
Dead end. Looks like I'll have to pay for someone to come and do this for me. At least the EQ box can be used as part of their calibration service.
shame, was hoping to do this, unless you have any other suggestions? Anyone else successfully done this with Vista?
John, Bruce, just realised I was using a mono in mini jack for the line in. I'm assuming that won't work or give me spurious results? Off to get another stereo-mini-to-two-phonos connector. Hopefully that will help.
That's correct. You do indeed require a stereo adapter or cable that splits out the right and left channel, so you can plug the microphone into one of them....
Hi Bruce, I think I have calibrated the card ok can you confirm? Here is my next attempt...please let me know what you think...what is all the big noise at the end? :S
Always use a vertical scale of 45dB-105dBSPL and a horizontal scale of 15Hz-200Hz for subwoofer or low frequency measurements and 15Hz-(any upper range) for full range measurements.
When plotting full range measurements, turn on smoothing (selectable in the left pane of REW). Smoothing is used for full range measurements, where reflections can cause comb filtering that makes it difficult to see the underlying trend of the response. That's what all the 'big noise' is at the end of the response. Smoothing is rarely used for low frequency measurements as it would obscure the true shape of the response and so not allow accurate correction filters to be determined.
OK, managed to sort that out! I've been through the rest and got rid of peaks and downloaded the recommended profile to my FBQ2496. Here is the new profile taken using a measurement with the filters on in the FBQ.
What do you think? Any pointers...how do I raise the "dips" so to speak...not very technical with the phraseology I'm afriad! Any help gratefully accepted!
Display your graphs with a vertical scale of 45dB-105dB and a horizontal scale that starts at 15Hz.
Click the little save icon in the lower left corner of your graph and it will save a jpg of the graph only - we don't need all the other stuff around it.
Anything you think I can do to tweak it? Do the dips matter?
Cheers for all of the help so far!
Also any advice how I can get a HUM out that has been introduced. I can hear a buzz in the sub that wasn't there until the FBQ was introduced into the line. I've put a power cleaning socket on there but it hasn't helped...
This is the point where the mains are usually added in and the exact same measure is taken, except now we would look at the relative level balancing of the sub and mains and also the crossover region to see how the mains mix with the sub. Many sub only dips are eliminated at this point by addingthe mains. If a dip or peak is occuring around the crossover, then the subs phase control and the receivers sub distance control are tweaked to get rid of it. Sometimes a bit of filtering is also required.
any advice how I can get a HUM out that has been introduced
Yeah, that's a ground loop that these BFD/FBQ's are notorious for creating. To prove it's a ground loop usually you would test with a 'cheater adapter' which basically lifts the safety third prong ground from the FBQ power cord. If the hum goes away, it's a ground loop. Sometimes it's caused by cable TV or some other external ground connected to your system. Some people have to install a transformer based hum eliminator to remove the ground loop.
Bruce, bang on! Removed the earth, no hum. Will leave it for now then come back to doing it properly!
Going to watch the latest Harry Potter tonight with the EQ in place. The Bypass is off and lots of red lights in the right channel so I'm assuming it's in place, it must be because my last screen grab is with it in place.
Bruce, it's made a noticable difference to the listening pleasure. Super stuff. I'll do more reading up with where I go next. I'd like to donate to the site for your help and the super service all round.
Found the donation button and made a donation. Thanks for the super software and great help.
Did anyone ever get REW settings into the DEQ via midi? I've found the Auto EQ on the DEQ works really well, but the REW process gives me more feeling of control, but adding the values in manually is hard work if you want to do it several times.... (ok I'm just lazy)
Full room EQ with Quad 57s and a Linn Sizmik, is awsome - best £200 I've ever spent on music.
I was on the fencepost of which EQ to get, the FBQ2496 Feedback Destroyer or the DEQ2496 Ultracurve Pro.
I've done a search in this forum and seems for my IB usage the FBQ2496 will serve me fine - and save me $150 as well.
I have to ask, has passing REW setting into the DEQ2496 been deemed not worth programing because few people have that need? I can see that. I'm not complaining, just lazy like others.
Part of me likes the feature set of the DEQ2496, but again seems like not really needed for IB Eq purposes (from what I read here)
I also have the DEQ2496 and would LOVE for it to be supported by REW for MIDI transfers. I have had it for 3 or 4 years now in my system for SUB EQ and am over doing manual filter adjustments with it. Call me lazy if you will but it has a MIDI interface so it would be great if we could actually use it ?
I haven't used REW yet but am about too. I have been planning to use REW for the last 2 years but never got round to buying an SPL meter, Sound card, Laptop, Mic preamp and all the cables. I only have the DEQ and an ECM8000 right now.
So as you can see i don't really want to have to shelve the DEQ and buy a BFD on top of all that just so i can do the MIDI trick that everyone raves about.
So if there is any way to add the DEQ to REW's list that would be ace
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