Posted by Chris [ 71.122.32.155 ] on June 12, 2007 at 15:17:22:
In Reply to: Re: Here is a Link to the driver posted by Jose on June 12, 2007 at 14:07:32:
Thanks for your reply!
I am not a speaker designer, but have been told by those who are that in a crossover, especially a first order one, you want significant overlap at the crossover point ?
IOW, each driver should contribute it's part to the crossover.
Now, if you say these drivers are only usable to 500 to 600 hz, HOW does VMPS cross over at 280 hz at only 6 db per octave ?
Would not there be a hole in the frequency response ?
Or, are they relying on the woofer/woofers to fill in this missing territory ?
If what you say is true, and 1/2 of the music is below 500 hz as I have been told, then I am listening to a 10 inch woofer in my RM 40's reproducing half my music, LOL
The older pair of RM 40's I have was advertised as being a ribbon speaker from 166 hz up.
The newer ones have a raised crossover point of 288 hz.
My RM 40's use the ribbons up to 10 k, and you say they only go out to 7K ?
The RM 40's I bought used, and are but one of 14 pairs of speakers I currently own.
I have been unable to get them to sound right since I have owned them.
Do not worry about "hurting my feelings" because my EGO is not involved with these.
I hear something really wrong with my pair, and I am asking for help and opinions.
I always seem to get "You just do not have the right stuff in front of them, the putty isn't right, the levels are wrong, they are not bi wired, your wire is not big enough, your amp is shit, you are using a CD Changer, your DAC is bad, etc, etc, etc.
Even though my B&W 801's, my old Magnepan MG 3A's, My VR 4 JR's's, and my new JBL L 7's sound just fine with my set up.
Here is what I hear Jose, I hear a speaker with problems, big time
My ears tell me this midrange driver is not what it is cracked up to be at all.
I hear peaks, dips, and strange distortions in this driver, THIS is what I hear.
I was hoping someone would have some measurements I could see, to see what is going on with these things.
Is it comb filtering, the driver itself, the crossover, or WHAT ?
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