[billyo]

I've been valiantly climbing a very steep learning curve with all this stuff and have managed to produce a few charts

The disclaimer with these is they were measured with an UCM8000 using only the generic calibration curve and a MXL Mic mate - which I know is not the perfect kit, but I've heard that it does give some insights into whats going on.

The setup is a pair of tower speakers and an SVS PB-1000 sub.

In the SPL chart below, the top two lines are 'nearfield' measurements with the mic pointed straight at the left and right speakers from about 30cm away. The bottom blue line is with the mic at the listening position and the middle yellow line is after I had a go at boosting the high frequency for fun using Equalizer APO.

Here is the spectrogram from the listening position after equalisation

Here is the waterfall from the listening position after equalisation

The room is rectangular 8m x 5m, which corresponds nicely to the modes in the low 20's and high 30's - unfortunately, putting bass traps up is probably not something I've got the WAF for - so for the time being, I've only got equalisation to play with.

I was thinking of trying to do something with the low around the 50Hz range... does anyone have any suggestions about what might be some useful improvements?

 

[Phillips]

With the Waterfall and Spectrogram graphs they are only usefull from 0 - 300hz, re post post these graphs.

Measure each + combined speaker at the listening position, this gives more info on which speaker/position is the problem.

Please list your gear receiver etc.

Did you mean the Behringer ECM8000?

Personally i wouldn't be EQing without a calibrated mic etc, could be EQing the wrong/gain etc. I would probably not use the Generic file as mics tend to have a large differences specially in the the high end.

Before EQing make sure you have the best speaker/listening position possible. Use the RTA in REW to find these. RTA is in real time so saves time. You can fine tune with EQ with the test sweeps, like you have above. Near field is generally measured about 1 meter away between the tweeter/mid range.

 

[billyo]

Yep, its an ECM8000 (got it mixed up my Behringer soundcard starting with U that I'm not using).

The towers are Tony Gee LBS speakers

http://www.humblehomemadehifi.com/download/Humble Homemade Hifi_LBS_copy.pdf

The sub is a SVS PB-1000

The receiver is an aging Yamaha RX-V520 that a friend gave me.

All charts are from the listening position - the sub is next to the left speaker and near a corner - unfortunately there is not much scope to move any speaker around by much.

Both speakers & sub

Left speaker only & sub

Right speaker only & sub