Registered: 10/09/03
Posts: 604
Loc: Baltimore. MD. USA (but born a...
In reply to:
the woofers have no lowpass and it's naturally roll off at around 45-50hz
Demasoni: What you are referring to is a high-pass filter because you would only use a low-pass filter at that frequency with a subwoofer.
High-pass literally means that it lets frequencies higher than the specified frequency pass and low-pass means the opposite (lower than specified are allowed through).
Anyways, I do not believe that the woofers have a high-pass filter (as that is kind of pointless since it would interfere with phase and only give you the possible benefit of increasing overall power-handling due to less deep bass being fed into the woofers. Since Axiom speakers are more aimed at fidelity than power output, it'd be highly unlikely that a high-pass filter would be used on the woofers.
Think of it this way: it is analogous to using a low-pass filter on the tweeter to filter out ultra-sonic frequencies. Pointless, right?
I think that the M22ti tweeter has a high-pass filter at 2.7 kHz. I am not 100% sure on that number though.
I would assume that the M22ti mid-woofers have a low-pass filter at around there (~3 kHz), but I've never seen it written down. I know that the M3ti is unique in that it has no low-pass filter so it rolls off naturally at around 2-3 kHz.
Actually, I'm working on a new crossover for the speakers. Either I'm going to have a new design or I'll use other components with better quality. However, I'm stuck in the schematics. Anyone, have experience in this?
The M22ti woofers do have a low-pass filter. It's the M3ti that does not have a low-pass on the woofer. And Axiom does not encourage modifications of the crossovers.
Regards,
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Alan Lofft, Axiom Resident Expert
