REW

mkane · « **on:** 21 Sep 2021, 01:27 am »

Finally getting around to taking some measurements. Took a while to get the connections right. I'll get in some serious sessions when we return.

DannyBadorine · « **Reply #1 on:** 21 Sep 2021, 02:34 pm »

Cool. I'm interested in your results.

lokie · « **Reply #2 on:** 21 Sep 2021, 02:49 pm »

Thanks for the inspiration. I need to do the same.

I need to quit avoiding this learning curve but when there's a choice of listening or measuring...???

Vince in TX · « **Reply #3 on:** 21 Sep 2021, 03:37 pm »

I actually just fired up REW for the first time last night. I have the calibrated mic, but haven't hooked it up yet. This looks to have a steep learning curve.

RonP · « **Reply #4 on:** 21 Sep 2021, 05:50 pm »

Quote from: Vince in TX on 21 Sep 2021, 03:37 pm

I actually just fired up REW for the first time last night. I have the calibrated mic, but haven't hooked it up yet. This looks to have a steep learning curve.

I'm in the same boat. I have the gear in the closet but haven't ventured down the road yet. All glances at it make it look complex. I need an "idiots" guide or something!

DannyBadorine · « **Reply #5 on:** 21 Sep 2021, 07:25 pm »

There is a lot to the program. Use the online resources and just go for it. Post results here and people will help guide you in the process. I'm still learning how to use it but the process has taught me a lot about speaker design.

mgalusha · « **Reply #6 on:** 21 Sep 2021, 07:37 pm »

There are some really good YT videos on REW. In particular, by Jeff Mery and also Home Theater Gurus - episodes 7 and 8 are about REW and subs but cover a lot of material.

dallaire1 · « **Reply #7 on:** 22 Sep 2021, 08:58 pm »

I have all the gear as well from Acoustisoft I bought years ago when I knew REW quite well. I tried to revisit it years later to start taking room measurements with the M3's and can't seem to remember half of it ! I've been using the M33 Dirac-Live program to just capture frequency response. I need REW to start treating room properly. Maybe I'll have my teenage son show me.

mkane · « **Reply #8 on:** 9 Oct 2021, 10:00 pm »

^Excellent idea. Guess I'm not going to get any feedback from the experts.

mkane · « **Reply #9 on:** 14 Oct 2021, 06:21 pm »

Measurement taken from the seating position with a bit of knob tweeking.

DannyBadorine · « **Reply #10 on:** 14 Oct 2021, 08:33 pm »

What exactly are you measuring with this? One speaker? Both Speakers and a subwoofer?

mkane · « **Reply #11 on:** 14 Oct 2021, 09:17 pm »

Right side speaker+sub

DannyBadorine · « **Reply #12 on:** 15 Oct 2021, 01:10 am »

If you take 3 measurements, we will be able to learn a lot more. Measure just the speaker, then just the sub, then both of them together. Overlay them on one graph.
Also, where are you placing the microphone for the measurements? Generally, we measure from the listening position or one meter from the axis of the tweeter.
It looks to me like you might be slightly off axis of the tweeter since the top end is going down in frequency response, but not too drastically. What speakers are you measuring?

mkane · « **Reply #13 on:** 16 Oct 2021, 01:25 am »

Measuring Wedgies on the latest graph. The graph above was Super Minis. I'll take some more measurements ASAP. Probably Monday.

thanks

mkane · « **Reply #14 on:** 21 Oct 2021, 05:12 pm »

green line is full range

Blue is H frame subs

Red and purple are wedgies' and super minis 200-20,000

Measured on axis @ 3'. I'm surprised the Wedgies and super minis measure the same.

Tyson · « **Reply #15 on:** 21 Oct 2021, 05:15 pm »

That's pretty good results. If it were me, I'd use the built in EQ on the sub to knock down that bump at 35hz and then raise the overall level of the subs to match closer to the 200hz crossover point.

jtwrace · « **Reply #16 on:** 21 Oct 2021, 05:20 pm »

Quote from: Tyson on 21 Oct 2021, 05:15 pm

That's pretty good results.

The Y axis scaling is 20dB - not going to be able to tell a thing with that.

Tyson · « **Reply #17 on:** 21 Oct 2021, 05:32 pm »

Quote from: jtwrace on 21 Oct 2021, 05:20 pm

The Y axis scaling is 20dB - not going to be able to tell a thing with that.

Doh, you are right. I assumed it was a 10db scale & just didn't look.

mlundy57 · « **Reply #18 on:** 21 Oct 2021, 05:39 pm »

I like to set REW to a 5 dB scale. It makes it a lot easier to read.

mkane · « **Reply #19 on:** 21 Oct 2021, 06:02 pm »

I'm on it.