Axiom Home Page Forums General Discussion Technical Questions M60 crossover frequencies

Alan,

Was just trying to illustrate what a rolloff characteristic looked like (@ 6 dB/12dB per octave) and that it wasn't a hard cutoff. Couldn't find an exact representation of what you were talking about, so I think I've muddied the waters again. My apologies.

Bren R.

BrenR,

The illustration is excellent. I think anyone can understand "slope" by looking at the diagram. Speaking of which, years ago while skiing at Mont Tremblant I once took a wrong turn and ended up on an expert run that looked like "C". Took me an hour to make it to the bottom. "A" is more my speed. . .

Regards,

no bandpass on the midrange driver? just highpass?

In reply to:

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no bandpass on the midrange driver? just highpass?

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Uhhh.. A band pass filter is a combination of a low pass and a high pass filter. As Alan stated, there is a low pass sending everything below 200Hz to the woofers, and 2 high(er) pass filters for the midrange driver and tweeter. In essence, that means that there are 2 bandpass filters in the M60s. One made up by the low pass filter and the 1st highpass filter, and one made up by the 1st and 2nd highpass filters. I'm lousy at ASCII art, but see if this can help you visualize it:

Low pass filter --- High pass #1 --- High pass #2
................ BP #1 .....|........ BP #2 .............

I think what he was asking exactly was, do the midrange drivers get everything above 200 Hz, including everything above 2kHz (which would be a high pass filter to the midrange.) Or do they only get everything between 200 Hz and 2k Hz (which would be a bandpass filter.) The way Alan worded it would suggest that the midrange and tweeters were both getting the signal at over 2k Hz, with the midrange also getting everything from 200 to 2k. I took it to mean a bandpass to the midrange, but I can see how it would be unclear.

Good point. There was some leeway in there for interpretation. I did make an assumption that the 2 high pass filters were setup as a bandpass filter for the midrange driver.

Kicking this one back to Alan...