Does this plot look reasonable?

[MakeFlat]

The attached plot is that of my floorstanders. Does it look about right?

[Otto]

Not bad. A few dips, but not bad.

How did you measure it? Specifically, what mic? Our "normal" tools (i.e., RS and Galaxy SPL meters) aren't too accurate above a couple kHz or so...

[MakeFlat]

I am just starting to play with Room EQ Wizard and I have an old RS analog meter that I bought 2-3 yrs ago. I might get a better mic depending on if I really needed one.

[MakeFlat]

Otto wrote:

Not bad. A few dips, but not bad.

How did you measure it? Specifically, what mic? Our "normal" tools (i.e., RS and Galaxy SPL meters) aren't too accurate above a couple kHz or so...

With an old RS SPL meter, I measured the floorstanders' output like a sub. Then I ran "full range" sweep (after recalibrating with "full range pink noise") to view the result after applying 6 filters. I thought someone said BFD for full range use would make the sound gritty. I was trying hard to hear the grit but did not find the sound to be gritty at all. Here's the plot:

[brucek]

I thought someone said BFD for full range use would make the sound gritty.

No, the problem most experience with a BFD when inserted in the mains signal is noise. It's the annoying hiss........... With the volume off, put your ear near your mains and listen (with and without the BFD).

brucek

[MakeFlat]

brucek wrote:

No, the problem most experience with a BFD when inserted in the mains signal is noise. It's the annoying hiss........... With the volume off, put your ear near your mains and listen (with and without the BFD).

brucek

I put my ear to my mains and I could hear the hiss - a tad louder than my receiver powering the other set of mains. I guess if one has a $2500 receiver or $2000 amp, the hiss may be annoying.

For whatever reason, I get valleys in the 170-550Hz range with my two sets of mains. Being able to EQ the mains in this frequency range helps to impart warmth and balance to the music without the boomy sound that one would get with a simple bass boost.

EDIT: The hiss is inaudible if volume is off. The hiss was heard with the volume control at listening level of 75-80dB (est), and CD player stopped. But that's with one ear to the tweeter.